source3/smbd/smb2_create.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 "printing.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "../libcli/smb/smb_common.h"
  27 #include "../librpc/gen_ndr/ndr_security.h"
  28 #include "../lib/util/tevent_ntstatus.h"
  29 #include "messages.h"
  30 #include "librpc/gen_ndr/open_files.h"
  31 #include "serverid.h"
  32
  33 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  34 {
  35         switch(in_oplock_level) {
  36         case SMB2_OPLOCK_LEVEL_NONE:
  37                 return NO_OPLOCK;
  38         case SMB2_OPLOCK_LEVEL_II:
  39                 return LEVEL_II_OPLOCK;
  40         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  41                 return EXCLUSIVE_OPLOCK;
  42         case SMB2_OPLOCK_LEVEL_BATCH:
  43                 return BATCH_OPLOCK;
  44         case SMB2_OPLOCK_LEVEL_LEASE:
  45                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  46                         "LEASE_OPLOCK_REQUESTED\n"));
  47                 return NO_OPLOCK;
  48         default:
  49                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  50                         "unknown level %u\n",
  51                         (unsigned int)in_oplock_level));
  52                 return NO_OPLOCK;
  53         }
  54 }
  55
  56 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  57 {
  58         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  59                 return SMB2_OPLOCK_LEVEL_BATCH;
  60         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  61                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  62         } else if (oplock_type == LEVEL_II_OPLOCK) {
  63                 /*
  64                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  65                  * this also includes FAKE_LEVEL_II_OPLOCKs
  66                  * which are internal only.
  67                  */
  68                 return SMB2_OPLOCK_LEVEL_II;
  69         } else {
  70                 return SMB2_OPLOCK_LEVEL_NONE;
  71         }
  72 }
  73
  74 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  75                         struct tevent_context *ev,
  76                         struct smbd_smb2_request *smb2req,
  77                         uint8_t in_oplock_level,
  78                         uint32_t in_impersonation_level,
  79                         uint32_t in_desired_access,
  80                         uint32_t in_file_attributes,
  81                         uint32_t in_share_access,
  82                         uint32_t in_create_disposition,
  83                         uint32_t in_create_options,
  84                         const char *in_name,
  85                         struct smb2_create_blobs in_context_blobs);
  86 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  87                         TALLOC_CTX *mem_ctx,
  88                         uint8_t *out_oplock_level,
  89                         uint32_t *out_create_action,
  90                         NTTIME *out_creation_time,
  91                         NTTIME *out_last_access_time,
  92                         NTTIME *out_last_write_time,
  93                         NTTIME *out_change_time,
  94                         uint64_t *out_allocation_size,
  95                         uint64_t *out_end_of_file,
  96                         uint32_t *out_file_attributes,
  97                         uint64_t *out_file_id_persistent,
  98                         uint64_t *out_file_id_volatile,
  99                         struct smb2_create_blobs *out_context_blobs);
 100
 101 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
 102 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
 103 {
 104         const uint8_t *inbody;
 105         const struct iovec *indyniov;
 106         int i = smb2req->current_idx;
 107         uint8_t in_oplock_level;
 108         uint32_t in_impersonation_level;
 109         uint32_t in_desired_access;
 110         uint32_t in_file_attributes;
 111         uint32_t in_share_access;
 112         uint32_t in_create_disposition;
 113         uint32_t in_create_options;
 114         uint16_t in_name_offset;
 115         uint16_t in_name_length;
 116         DATA_BLOB in_name_buffer;
 117         char *in_name_string;
 118         size_t in_name_string_size;
 119         uint32_t name_offset = 0;
 120         uint32_t name_available_length = 0;
 121         uint32_t in_context_offset;
 122         uint32_t in_context_length;
 123         DATA_BLOB in_context_buffer;
 124         struct smb2_create_blobs in_context_blobs;
 125         uint32_t context_offset = 0;
 126         uint32_t context_available_length = 0;
 127         uint32_t dyn_offset;
 128         NTSTATUS status;
 129         bool ok;
 130         struct tevent_req *tsubreq;
 131
 132         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 133         if (!NT_STATUS_IS_OK(status)) {
 134                 return smbd_smb2_request_error(smb2req, status);
 135         }
 136         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 137
 138         in_oplock_level         = CVAL(inbody, 0x03);
 139         in_impersonation_level  = IVAL(inbody, 0x04);
 140         in_desired_access       = IVAL(inbody, 0x18);
 141         in_file_attributes      = IVAL(inbody, 0x1C);
 142         in_share_access         = IVAL(inbody, 0x20);
 143         in_create_disposition   = IVAL(inbody, 0x24);
 144         in_create_options       = IVAL(inbody, 0x28);
 145         in_name_offset          = SVAL(inbody, 0x2C);
 146         in_name_length          = SVAL(inbody, 0x2E);
 147         in_context_offset       = IVAL(inbody, 0x30);
 148         in_context_length       = IVAL(inbody, 0x34);
 149
 150         /*
 151          * First check if the dynamic name and context buffers
 152          * are correctly specified.
 153          *
 154          * Note: That we don't check if the name and context buffers
 155          *       overlap
 156          */
 157
 158         dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
 159
 160         if (in_name_offset == 0 && in_name_length == 0) {
 161                 /* This is ok */
 162                 name_offset = 0;
 163         } else if (in_name_offset < dyn_offset) {
 164                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 165         } else {
 166                 name_offset = in_name_offset - dyn_offset;
 167         }
 168
 169         indyniov = &smb2req->in.vector[i+2];
 170
 171         if (name_offset > indyniov->iov_len) {
 172                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 173         }
 174
 175         name_available_length = indyniov->iov_len - name_offset;
 176
 177         if (in_name_length > name_available_length) {
 178                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 179         }
 180
 181         in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
 182         in_name_buffer.length = in_name_length;
 183
 184         if (in_context_offset == 0 && in_context_length == 0) {
 185                 /* This is ok */
 186                 context_offset = 0;
 187         } else if (in_context_offset < dyn_offset) {
 188                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 189         } else {
 190                 context_offset = in_context_offset - dyn_offset;
 191         }
 192
 193         if (context_offset > indyniov->iov_len) {
 194                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 195         }
 196
 197         context_available_length = indyniov->iov_len - context_offset;
 198
 199         if (in_context_length > context_available_length) {
 200                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 201         }
 202
 203         in_context_buffer.data = (uint8_t *)indyniov->iov_base +
 204                 context_offset;
 205         in_context_buffer.length = in_context_length;
 206
 207         /*
 208          * Now interpret the name and context buffers
 209          */
 210
 211         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 212                                    in_name_buffer.data,
 213                                    in_name_buffer.length,
 214                                    &in_name_string,
 215                                    &in_name_string_size);
 216         if (!ok) {
 217                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 218         }
 219
 220         if (in_name_buffer.length == 0) {
 221                 in_name_string_size = 0;
 222         }
 223
 224         if (strlen(in_name_string) != in_name_string_size) {
 225                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 226         }
 227
 228         ZERO_STRUCT(in_context_blobs);
 229         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 230         if (!NT_STATUS_IS_OK(status)) {
 231                 return smbd_smb2_request_error(smb2req, status);
 232         }
 233
 234         tsubreq = smbd_smb2_create_send(smb2req,
 235                                        smb2req->sconn->ev_ctx,
 236                                        smb2req,
 237                                        in_oplock_level,
 238                                        in_impersonation_level,
 239                                        in_desired_access,
 240                                        in_file_attributes,
 241                                        in_share_access,
 242                                        in_create_disposition,
 243                                        in_create_options,
 244                                        in_name_string,
 245                                        in_context_blobs);
 246         if (tsubreq == NULL) {
 247                 smb2req->subreq = NULL;
 248                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 249         }
 250         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 251
 252         /*
 253          * For now we keep the logic that we do not send STATUS_PENDING
 254          * for sharing violations, so we just wait 2 seconds.
 255          *
 256          * TODO: we need more tests for this.
 257          */
 258         return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
 259 }
 260
 261 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 262 {
 263         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 264         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 265 }
 266
 267 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 268 {
 269         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 270                                         struct smbd_smb2_request);
 271         DATA_BLOB outbody;
 272         DATA_BLOB outdyn;
 273         uint8_t out_oplock_level = 0;
 274         uint32_t out_create_action = 0;
 275         NTTIME out_creation_time = 0;
 276         NTTIME out_last_access_time = 0;
 277         NTTIME out_last_write_time = 0;
 278         NTTIME out_change_time = 0;
 279         uint64_t out_allocation_size = 0;
 280         uint64_t out_end_of_file = 0;
 281         uint32_t out_file_attributes = 0;
 282         uint64_t out_file_id_persistent = 0;
 283         uint64_t out_file_id_volatile = 0;
 284         struct smb2_create_blobs out_context_blobs;
 285         DATA_BLOB out_context_buffer;
 286         uint16_t out_context_buffer_offset = 0;
 287         NTSTATUS status;
 288         NTSTATUS error; /* transport error */
 289
 290         if (smb2req->cancelled) {
 291                 uint64_t mid = get_mid_from_smb2req(smb2req);
 292                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 293                         (unsigned long long)mid ));
 294                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 295                 if (!NT_STATUS_IS_OK(error)) {
 296                         smbd_server_connection_terminate(smb2req->sconn,
 297                                 nt_errstr(error));
 298                         return;
 299                 }
 300                 return;
 301         }
 302
 303         status = smbd_smb2_create_recv(tsubreq,
 304                                        smb2req,
 305                                        &out_oplock_level,
 306                                        &out_create_action,
 307                                        &out_creation_time,
 308                                        &out_last_access_time,
 309                                        &out_last_write_time,
 310                                        &out_change_time,
 311                                        &out_allocation_size,
 312                                        &out_end_of_file,
 313                                        &out_file_attributes,
 314                                        &out_file_id_persistent,
 315                                        &out_file_id_volatile,
 316                                        &out_context_blobs);
 317         if (!NT_STATUS_IS_OK(status)) {
 318                 error = smbd_smb2_request_error(smb2req, status);
 319                 if (!NT_STATUS_IS_OK(error)) {
 320                         smbd_server_connection_terminate(smb2req->sconn,
 321                                                          nt_errstr(error));
 322                         return;
 323                 }
 324                 return;
 325         }
 326
 327         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 328         if (!NT_STATUS_IS_OK(status)) {
 329                 error = smbd_smb2_request_error(smb2req, status);
 330                 if (!NT_STATUS_IS_OK(error)) {
 331                         smbd_server_connection_terminate(smb2req->sconn,
 332                                                          nt_errstr(error));
 333                         return;
 334                 }
 335                 return;
 336         }
 337
 338         if (out_context_buffer.length > 0) {
 339                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 340         }
 341
 342         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 343         if (outbody.data == NULL) {
 344                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 345                 if (!NT_STATUS_IS_OK(error)) {
 346                         smbd_server_connection_terminate(smb2req->sconn,
 347                                                          nt_errstr(error));
 348                         return;
 349                 }
 350                 return;
 351         }
 352
 353         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 354         SCVAL(outbody.data, 0x02,
 355               out_oplock_level);                /* oplock level */
 356         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 357         SIVAL(outbody.data, 0x04,
 358               out_create_action);               /* create action */
 359         SBVAL(outbody.data, 0x08,
 360               out_creation_time);               /* creation time */
 361         SBVAL(outbody.data, 0x10,
 362               out_last_access_time);            /* last access time */
 363         SBVAL(outbody.data, 0x18,
 364               out_last_write_time);             /* last write time */
 365         SBVAL(outbody.data, 0x20,
 366               out_change_time);                 /* change time */
 367         SBVAL(outbody.data, 0x28,
 368               out_allocation_size);             /* allocation size */
 369         SBVAL(outbody.data, 0x30,
 370               out_end_of_file);                 /* end of file */
 371         SIVAL(outbody.data, 0x38,
 372               out_file_attributes);             /* file attributes */
 373         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 374         SBVAL(outbody.data, 0x40,
 375               out_file_id_persistent);          /* file id (persistent) */
 376         SBVAL(outbody.data, 0x48,
 377               out_file_id_volatile);            /* file id (volatile) */
 378         SIVAL(outbody.data, 0x50,
 379               out_context_buffer_offset);       /* create contexts offset */
 380         SIVAL(outbody.data, 0x54,
 381               out_context_buffer.length);       /* create contexts length */
 382
 383         outdyn = out_context_buffer;
 384
 385         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 386         if (!NT_STATUS_IS_OK(error)) {
 387                 smbd_server_connection_terminate(smb2req->sconn,
 388                                                  nt_errstr(error));
 389                 return;
 390         }
 391 }
 392
 393 static NTSTATUS smb2_create_durable_reconnect(struct smbXsrv_open *op,
 394                                               TALLOC_CTX *mem_ctx,
 395                                               files_struct **fsp)
 396 {
 397         struct share_mode_lock *sharemode_lock;
 398
 399         /* 1. check entry in locking.tdb */
 400
 401         /*
 402          * Q: fetch with lock right away?
 403          */
 404         sharemode_lock = fetch_share_mode_unlocked(mem_ctx,
 405                                                    op->global->backend_file_id);
 406         if (sharemode_lock == NULL) {
 407                 /* TODO: use/create other fetch func with better error code */
 408                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 409         }
 410
 411         if (sharemode_lock->data->num_share_modes == 0) {
 412                 /* should not happen? internal error? */
 413                 return NT_STATUS_INTERNAL_DB_ERROR;
 414         }
 415
 416         if (sharemode_lock->data->num_share_modes > 1) {
 417                 /*
 418                  * It can't be durable if there is more than one handle
 419                  * on the file.
 420                  */
 421                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 422         }
 423
 424         if (serverid_exists(&sharemode_lock->data->share_modes[0].pid))  {
 425                 /*
 426                  * server still exists
 427                  * TODO: check whether session exists
 428                  *  (could have been a session_logoff())
 429                  */
 430                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 431         }
 432
 433         /* 2. proceed with opening file */
 434
 435         /*
 436          * refetch with lock and update the pid
 437          */
 438         talloc_free(sharemode_lock);
 439         sharemode_lock = get_share_mode_lock(mem_ctx,
 440                                              op->global->backend_file_id);
 441         if (sharemode_lock == NULL) {
 442                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 443         }
 444
 445         sharemode_lock->data->share_modes[0].pid =
 446                 messaging_server_id(op->connection->sconn->msg_ctx);
 447
 448         /*
 449          * - reopen the file with SMB_VFS_OPEN()
 450          * - build a files_struct
 451          * - release the sharemode lock
 452          * - update fsp pointer in smbXsrv_open
 453          * - return
 454          *
 455          * ... think about seek()
 456          */
 457         return NT_STATUS_NOT_IMPLEMENTED;
 458 }
 459
 460 struct smbd_smb2_create_state {
 461         struct smbd_smb2_request *smb2req;
 462         struct smb_request *smb1req;
 463         struct timed_event *te;
 464         struct tevent_immediate *im;
 465         struct timeval request_time;
 466         struct file_id id;
 467         DATA_BLOB private_data;
 468         uint8_t out_oplock_level;
 469         uint32_t out_create_action;
 470         NTTIME out_creation_time;
 471         NTTIME out_last_access_time;
 472         NTTIME out_last_write_time;
 473         NTTIME out_change_time;
 474         uint64_t out_allocation_size;
 475         uint64_t out_end_of_file;
 476         uint32_t out_file_attributes;
 477         uint64_t out_file_id_persistent;
 478         uint64_t out_file_id_volatile;
 479         struct smb2_create_blobs out_context_blobs;
 480 };
 481
 482 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 483                         struct tevent_context *ev,
 484                         struct smbd_smb2_request *smb2req,
 485                         uint8_t in_oplock_level,
 486                         uint32_t in_impersonation_level,
 487                         uint32_t in_desired_access,
 488                         uint32_t in_file_attributes,
 489                         uint32_t in_share_access,
 490                         uint32_t in_create_disposition,
 491                         uint32_t in_create_options,
 492                         const char *in_name,
 493                         struct smb2_create_blobs in_context_blobs)
 494 {
 495         struct tevent_req *req = NULL;
 496         struct smbd_smb2_create_state *state = NULL;
 497         NTSTATUS status;
 498         struct smb_request *smb1req = NULL;
 499         files_struct *result = NULL;
 500         int info;
 501         struct timespec write_time_ts;
 502         struct smb2_create_blobs out_context_blobs;
 503         int requested_oplock_level;
 504
 505         ZERO_STRUCT(out_context_blobs);
 506
 507         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 508                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 509         } else {
 510                 requested_oplock_level = in_oplock_level;
 511         }
 512
 513
 514         if (smb2req->subreq == NULL) {
 515                 /* New create call. */
 516                 req = tevent_req_create(mem_ctx, &state,
 517                                 struct smbd_smb2_create_state);
 518                 if (req == NULL) {
 519                         return NULL;
 520                 }
 521                 state->smb2req = smb2req;
 522
 523                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 524                 if (tevent_req_nomem(smb1req, req)) {
 525                         return tevent_req_post(req, ev);
 526                 }
 527                 state->smb1req = smb1req;
 528                 smb2req->subreq = req;
 529                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 530                         in_name));
 531         } else {
 532                 /* Re-entrant create call. */
 533                 req = smb2req->subreq;
 534                 state = tevent_req_data(req,
 535                                 struct smbd_smb2_create_state);
 536                 smb1req = state->smb1req;
 537                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 538                         in_name ));
 539         }
 540
 541         if (IS_IPC(smb1req->conn)) {
 542                 const char *pipe_name = in_name;
 543
 544                 if (!lp_nt_pipe_support()) {
 545                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 546                         return tevent_req_post(req, ev);
 547                 }
 548
 549                 /* Strip \\ off the name. */
 550                 if (pipe_name[0] == '\\') {
 551                         pipe_name++;
 552                 }
 553
 554                 status = open_np_file(smb1req, pipe_name, &result);
 555                 if (!NT_STATUS_IS_OK(status)) {
 556                         tevent_req_nterror(req, status);
 557                         return tevent_req_post(req, ev);
 558                 }
 559                 info = FILE_WAS_OPENED;
 560         } else if (CAN_PRINT(smb1req->conn)) {
 561                 status = file_new(smb1req, smb1req->conn, &result);
 562                 if(!NT_STATUS_IS_OK(status)) {
 563                         tevent_req_nterror(req, status);
 564                         return tevent_req_post(req, ev);
 565                 }
 566
 567                 status = print_spool_open(result, in_name,
 568                                           smb1req->vuid);
 569                 if (!NT_STATUS_IS_OK(status)) {
 570                         file_free(smb1req, result);
 571                         tevent_req_nterror(req, status);
 572                         return tevent_req_post(req, ev);
 573                 }
 574                 info = FILE_WAS_CREATED;
 575         } else {
 576                 char *fname;
 577                 struct smb_filename *smb_fname = NULL;
 578                 struct smb2_create_blob *exta = NULL;
 579                 struct ea_list *ea_list = NULL;
 580                 struct smb2_create_blob *mxac = NULL;
 581                 NTTIME max_access_time = 0;
 582                 struct smb2_create_blob *secd = NULL;
 583                 struct security_descriptor *sec_desc = NULL;
 584                 struct smb2_create_blob *dhnq = NULL;
 585                 struct smb2_create_blob *dhnc = NULL;
 586                 struct smb2_create_blob *alsi = NULL;
 587                 uint64_t allocation_size = 0;
 588                 struct smb2_create_blob *twrp = NULL;
 589                 struct smb2_create_blob *qfid = NULL;
 590
 591                 exta = smb2_create_blob_find(&in_context_blobs,
 592                                              SMB2_CREATE_TAG_EXTA);
 593                 mxac = smb2_create_blob_find(&in_context_blobs,
 594                                              SMB2_CREATE_TAG_MXAC);
 595                 secd = smb2_create_blob_find(&in_context_blobs,
 596                                              SMB2_CREATE_TAG_SECD);
 597                 dhnq = smb2_create_blob_find(&in_context_blobs,
 598                                              SMB2_CREATE_TAG_DHNQ);
 599                 dhnc = smb2_create_blob_find(&in_context_blobs,
 600                                              SMB2_CREATE_TAG_DHNC);
 601                 alsi = smb2_create_blob_find(&in_context_blobs,
 602                                              SMB2_CREATE_TAG_ALSI);
 603                 twrp = smb2_create_blob_find(&in_context_blobs,
 604                                              SMB2_CREATE_TAG_TWRP);
 605                 qfid = smb2_create_blob_find(&in_context_blobs,
 606                                              SMB2_CREATE_TAG_QFID);
 607
 608                 fname = talloc_strdup(state, in_name);
 609                 if (tevent_req_nomem(fname, req)) {
 610                         return tevent_req_post(req, ev);
 611                 }
 612
 613                 if (exta) {
 614                         if (dhnc) {
 615                                 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
 616                                 return tevent_req_post(req, ev);
 617                         }
 618
 619                         ea_list = read_nttrans_ea_list(mem_ctx,
 620                                 (const char *)exta->data.data, exta->data.length);
 621                         if (!ea_list) {
 622                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 623                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 624                                 return tevent_req_post(req, ev);
 625                         }
 626                 }
 627
 628                 if (mxac) {
 629                         if (dhnc) {
 630                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 631                                 return tevent_req_post(req, ev);
 632                         }
 633
 634                         if (mxac->data.length == 0) {
 635                                 max_access_time = 0;
 636                         } else if (mxac->data.length == 8) {
 637                                 max_access_time = BVAL(mxac->data.data, 0);
 638                         } else {
 639                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 640                                 return tevent_req_post(req, ev);
 641                         }
 642                 }
 643
 644                 if (secd) {
 645                         enum ndr_err_code ndr_err;
 646
 647                         if (dhnc) {
 648                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 649                                 return tevent_req_post(req, ev);
 650                         }
 651
 652                         sec_desc = talloc_zero(state, struct security_descriptor);
 653                         if (tevent_req_nomem(sec_desc, req)) {
 654                                 return tevent_req_post(req, ev);
 655                         }
 656
 657                         ndr_err = ndr_pull_struct_blob(&secd->data,
 658                                 sec_desc, sec_desc,
 659                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 660                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 661                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 662                                          ndr_errstr(ndr_err)));
 663                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 664                                 return tevent_req_post(req, ev);
 665                         }
 666                 }
 667
 668                 if (dhnq) {
 669                         if (dhnc) {
 670                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 671                                 return tevent_req_post(req, ev);
 672                         }
 673
 674                         if (dhnq->data.length != 16) {
 675                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 676                                 return tevent_req_post(req, ev);
 677                         }
 678                         /*
 679                          * durable handle request is processed below.
 680                          */
 681                 }
 682
 683                 if (dhnc) {
 684                         uint64_t persistent_id;
 685                         struct smbXsrv_open *op = NULL;
 686
 687                         if (dhnc->data.length != 16) {
 688                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 689                                 return tevent_req_post(req, ev);
 690                         }
 691
 692                         persistent_id = BVAL(dhnc->data.data, 0);
 693
 694                         status = smb2srv_open_recreate(smb2req->sconn->conn,
 695                                                        persistent_id,
 696                                                        &op);
 697                         if (!NT_STATUS_IS_OK(status)) {
 698                                 tevent_req_nterror(req, status);
 699                                 return tevent_req_post(req, ev);
 700                         }
 701
 702                         /* TODO: needed? or is successful global_lookup enough?) */
 703
 704                         if (!op->global->durable) {
 705                                 talloc_free(op);
 706                                 tevent_req_nterror(req,
 707                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 708                                 return tevent_req_post(req, ev);
 709                         }
 710
 711                         // TODO: implement this function..
 712                         status = smb2_create_durable_reconnect(op, mem_ctx, &result);
 713
 714                         if (!NT_STATUS_IS_OK(status)) {
 715                                 tevent_req_nterror(req, status);
 716                                 return tevent_req_post(req, ev);
 717                         }
 718
 719                         // TODO: response construction
 720
 721                         tevent_req_done(req);
 722                         return tevent_req_post(req, ev);
 723                 }
 724
 725                 if (alsi) {
 726                         if (dhnc) {
 727                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 728                                 return tevent_req_post(req, ev);
 729                         }
 730
 731                         if (alsi->data.length != 8) {
 732                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 733                                 return tevent_req_post(req, ev);
 734                         }
 735                         allocation_size = BVAL(alsi->data.data, 0);
 736                 }
 737
 738                 if (twrp) {
 739                         NTTIME nttime;
 740                         time_t t;
 741                         struct tm *tm;
 742
 743                         if (dhnc) {
 744                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 745                                 return tevent_req_post(req, ev);
 746                         }
 747
 748                         if (twrp->data.length != 8) {
 749                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 750                                 return tevent_req_post(req, ev);
 751                         }
 752
 753                         nttime = BVAL(twrp->data.data, 0);
 754                         t = nt_time_to_unix(nttime);
 755                         tm = gmtime(&t);
 756
 757                         TALLOC_FREE(fname);
 758                         fname = talloc_asprintf(state,
 759                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 760                                         tm->tm_year + 1900,
 761                                         tm->tm_mon + 1,
 762                                         tm->tm_mday,
 763                                         tm->tm_hour,
 764                                         tm->tm_min,
 765                                         tm->tm_sec,
 766                                         in_name);
 767                         if (tevent_req_nomem(fname, req)) {
 768                                 return tevent_req_post(req, ev);
 769                         }
 770                 }
 771
 772                 if (qfid) {
 773                         if (qfid->data.length != 0) {
 774                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 775                                 return tevent_req_post(req, ev);
 776                         }
 777                 }
 778
 779                 /* these are ignored for SMB2 */
 780                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 781                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 782
 783                 /*
 784                  * For a DFS path the function parse_dfs_path()
 785                  * will do the path processing.
 786                  */
 787
 788                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 789                         /* convert '\\' into '/' */
 790                         status = check_path_syntax(fname);
 791                         if (!NT_STATUS_IS_OK(status)) {
 792                                 tevent_req_nterror(req, status);
 793                                 return tevent_req_post(req, ev);
 794                         }
 795                 }
 796
 797                 status = filename_convert(req,
 798                                           smb1req->conn,
 799                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 800                                           fname,
 801                                           0,
 802                                           NULL,
 803                                           &smb_fname);
 804                 if (!NT_STATUS_IS_OK(status)) {
 805                         tevent_req_nterror(req, status);
 806                         return tevent_req_post(req, ev);
 807                 }
 808
 809                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 810
 811                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 812                                              smb1req,
 813                                              0, /* root_dir_fid */
 814                                              smb_fname,
 815                                              in_desired_access,
 816                                              in_share_access,
 817                                              in_create_disposition,
 818                                              in_create_options,
 819                                              in_file_attributes,
 820                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 821                                              allocation_size,
 822                                              0, /* private_flags */
 823                                              sec_desc,
 824                                              ea_list,
 825                                              &result,
 826                                              &info);
 827                 if (!NT_STATUS_IS_OK(status)) {
 828                         if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
 829                                 return req;
 830                         }
 831                         tevent_req_nterror(req, status);
 832                         return tevent_req_post(req, ev);
 833                 }
 834
 835                 if (mxac) {
 836                         NTTIME last_write_time;
 837
 838                         unix_timespec_to_nt_time(&last_write_time,
 839                                                  result->fsp_name->st.st_ex_mtime);
 840                         if (last_write_time != max_access_time) {
 841                                 uint8_t p[8];
 842                                 uint32_t max_access_granted;
 843                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 844
 845                                 status = smbd_calculate_access_mask(smb1req->conn,
 846                                                         result->fsp_name,
 847                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 848                                                         &max_access_granted);
 849
 850                                 SIVAL(p, 0, NT_STATUS_V(status));
 851                                 SIVAL(p, 4, max_access_granted);
 852
 853                                 status = smb2_create_blob_add(state,
 854                                                         &out_context_blobs,
 855                                                         SMB2_CREATE_TAG_MXAC,
 856                                                         blob);
 857                                 if (!NT_STATUS_IS_OK(status)) {
 858                                         tevent_req_nterror(req, status);
 859                                         return tevent_req_post(req, ev);
 860                                 }
 861                         }
 862                 }
 863
 864                 if (dhnq && BATCH_OPLOCK_TYPE(result->oplock_type)) {
 865                         uint8_t p[8];
 866                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 867
 868                         result->smbXsrv->global->backend_file_id = result->file_id;
 869                         result->smbXsrv->global->durable = true;
 870
 871                         status = smbXsrv_open_update(result->smbXsrv);
 872                         if (!NT_STATUS_IS_OK(status)) {
 873                                 tevent_req_nterror(req, status);
 874                                 return tevent_req_post(req, ev);
 875                         }
 876
 877                         ZERO_STRUCT(p);
 878
 879                         status = smb2_create_blob_add(state, &out_context_blobs,
 880                                                       SMB2_CREATE_TAG_DHNQ,
 881                                                       blob);
 882                         if (!NT_STATUS_IS_OK(status)) {
 883                                 tevent_req_nterror(req, status);
 884                                 return tevent_req_post(req, ev);
 885                         }
 886                 }
 887
 888                 if (qfid) {
 889                         uint8_t p[32];
 890                         uint64_t file_index = get_FileIndex(result->conn,
 891                                                         &result->fsp_name->st);
 892                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 893
 894                         ZERO_STRUCT(p);
 895
 896                         /* From conversations with Microsoft engineers at
 897                            the MS plugfest. The first 8 bytes are the "volume index"
 898                            == inode, the second 8 bytes are the "volume id",
 899                            == dev. This will be updated in the SMB2 doc. */
 900                         SBVAL(p, 0, file_index);
 901                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 902
 903                         status = smb2_create_blob_add(state, &out_context_blobs,
 904                                                       SMB2_CREATE_TAG_QFID,
 905                                                       blob);
 906                         if (!NT_STATUS_IS_OK(status)) {
 907                                 tevent_req_nterror(req, status);
 908                                 return tevent_req_post(req, ev);
 909                         }
 910                 }
 911         }
 912
 913         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 914
 915         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 916                 state->out_oplock_level = in_oplock_level;
 917         } else {
 918                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 919         }
 920
 921         if ((in_create_disposition == FILE_SUPERSEDE)
 922             && (info == FILE_WAS_OVERWRITTEN)) {
 923                 state->out_create_action = FILE_WAS_SUPERSEDED;
 924         } else {
 925                 state->out_create_action = info;
 926         }
 927         state->out_file_attributes = dos_mode(result->conn,
 928                                            result->fsp_name);
 929         /* Deal with other possible opens having a modified
 930            write time. JRA. */
 931         ZERO_STRUCT(write_time_ts);
 932         get_file_infos(result->file_id, 0, NULL, &write_time_ts);
 933         if (!null_timespec(write_time_ts)) {
 934                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 935         }
 936
 937         unix_timespec_to_nt_time(&state->out_creation_time,
 938                         get_create_timespec(smb1req->conn, result,
 939                                         result->fsp_name));
 940         unix_timespec_to_nt_time(&state->out_last_access_time,
 941                         result->fsp_name->st.st_ex_atime);
 942         unix_timespec_to_nt_time(&state->out_last_write_time,
 943                         result->fsp_name->st.st_ex_mtime);
 944         unix_timespec_to_nt_time(&state->out_change_time,
 945                         get_change_timespec(smb1req->conn, result,
 946                                         result->fsp_name));
 947         state->out_allocation_size =
 948                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
 949                                                &(result->fsp_name->st));
 950         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 951         if (state->out_file_attributes == 0) {
 952                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 953         }
 954
 955         state->out_file_id_persistent = result->smbXsrv->global->open_persistent_id;
 956         state->out_file_id_volatile = result->smbXsrv->global->open_volatile_id;
 957         state->out_context_blobs = out_context_blobs;
 958
 959         tevent_req_done(req);
 960         return tevent_req_post(req, ev);
 961 }
 962
 963 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 964                         TALLOC_CTX *mem_ctx,
 965                         uint8_t *out_oplock_level,
 966                         uint32_t *out_create_action,
 967                         NTTIME *out_creation_time,
 968                         NTTIME *out_last_access_time,
 969                         NTTIME *out_last_write_time,
 970                         NTTIME *out_change_time,
 971                         uint64_t *out_allocation_size,
 972                         uint64_t *out_end_of_file,
 973                         uint32_t *out_file_attributes,
 974                         uint64_t *out_file_id_persistent,
 975                         uint64_t *out_file_id_volatile,
 976                         struct smb2_create_blobs *out_context_blobs)
 977 {
 978         NTSTATUS status;
 979         struct smbd_smb2_create_state *state = tevent_req_data(req,
 980                                                struct smbd_smb2_create_state);
 981
 982         if (tevent_req_is_nterror(req, &status)) {
 983                 tevent_req_received(req);
 984                 return status;
 985         }
 986
 987         *out_oplock_level       = state->out_oplock_level;
 988         *out_create_action      = state->out_create_action;
 989         *out_creation_time      = state->out_creation_time;
 990         *out_last_access_time   = state->out_last_access_time;
 991         *out_last_write_time    = state->out_last_write_time;
 992         *out_change_time        = state->out_change_time;
 993         *out_allocation_size    = state->out_allocation_size;
 994         *out_end_of_file        = state->out_end_of_file;
 995         *out_file_attributes    = state->out_file_attributes;
 996         *out_file_id_persistent = state->out_file_id_persistent;
 997         *out_file_id_volatile   = state->out_file_id_volatile;
 998         *out_context_blobs      = state->out_context_blobs;
 999
1000         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1001
1002         tevent_req_received(req);
1003         return NT_STATUS_OK;
1004 }
1005
1006 /*********************************************************
1007  Code for dealing with deferred opens.
1008 *********************************************************/
1009
1010 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1011                         struct timeval *p_request_time,
1012                         void **pp_state)
1013 {
1014         struct smbd_smb2_create_state *state = NULL;
1015         struct tevent_req *req = NULL;
1016
1017         if (!smb2req) {
1018                 return false;
1019         }
1020         if (smb2req->async_te == NULL) {
1021                 return false;
1022         }
1023         req = smb2req->subreq;
1024         if (!req) {
1025                 return false;
1026         }
1027         state = tevent_req_data(req, struct smbd_smb2_create_state);
1028         if (!state) {
1029                 return false;
1030         }
1031         if (p_request_time) {
1032                 *p_request_time = state->request_time;
1033         }
1034         if (pp_state) {
1035                 *pp_state = (void *)state->private_data.data;
1036         }
1037         return true;
1038 }
1039
1040 /*********************************************************
1041  Re-process this call early - requested by message or
1042  close.
1043 *********************************************************/
1044
1045 static struct smbd_smb2_request *find_open_smb2req(
1046         struct smbd_server_connection *sconn, uint64_t mid)
1047 {
1048         struct smbd_smb2_request *smb2req;
1049
1050         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1051                 uint64_t message_id;
1052                 if (smb2req->subreq == NULL) {
1053                         /* This message has been processed. */
1054                         continue;
1055                 }
1056                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1057                         /* This message has been processed. */
1058                         continue;
1059                 }
1060                 message_id = get_mid_from_smb2req(smb2req);
1061                 if (message_id == mid) {
1062                         return smb2req;
1063                 }
1064         }
1065         return NULL;
1066 }
1067
1068 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1069 {
1070         struct smbd_smb2_create_state *state = NULL;
1071         struct smbd_smb2_request *smb2req;
1072
1073         smb2req = find_open_smb2req(sconn, mid);
1074
1075         if (!smb2req) {
1076                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1077                         (unsigned long long)mid));
1078                 return false;
1079         }
1080         if (!smb2req->subreq) {
1081                 return false;
1082         }
1083         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1084                 return false;
1085         }
1086         state = tevent_req_data(smb2req->subreq,
1087                         struct smbd_smb2_create_state);
1088         if (!state) {
1089                 return false;
1090         }
1091         /* It's not in progress if there's no timeout event. */
1092         if (!state->te) {
1093                 return false;
1094         }
1095
1096         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1097                         (unsigned long long)mid));
1098
1099         return true;
1100 }
1101
1102 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1103                                                         uint64_t mid)
1104 {
1105         struct smbd_smb2_create_state *state = NULL;
1106
1107         if (!smb2req->subreq) {
1108                 return;
1109         }
1110         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1111                 return;
1112         }
1113         state = tevent_req_data(smb2req->subreq,
1114                         struct smbd_smb2_create_state);
1115         if (!state) {
1116                 return;
1117         }
1118
1119         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1120                 "mid %llu\n",
1121                 (unsigned long long)mid ));
1122
1123         /* Ensure we don't have any outstanding timer event. */
1124         TALLOC_FREE(state->te);
1125         /* Ensure we don't have any outstanding immediate event. */
1126         TALLOC_FREE(state->im);
1127 }
1128
1129 void remove_deferred_open_message_smb2(
1130         struct smbd_server_connection *sconn, uint64_t mid)
1131 {
1132         struct smbd_smb2_request *smb2req;
1133
1134         smb2req = find_open_smb2req(sconn, mid);
1135
1136         if (!smb2req) {
1137                 DEBUG(10,("remove_deferred_open_message_smb2: "
1138                         "can't find mid %llu\n",
1139                         (unsigned long long)mid ));
1140                 return;
1141         }
1142         remove_deferred_open_message_smb2_internal(smb2req, mid);
1143 }
1144
1145 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1146                                         struct tevent_immediate *im,
1147                                         void *private_data)
1148 {
1149         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1150                                         struct smbd_smb2_request);
1151         struct smbd_server_connection *sconn = smb2req->sconn;
1152         uint64_t mid = get_mid_from_smb2req(smb2req);
1153         NTSTATUS status;
1154
1155         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1156                 "re-dispatching mid %llu\n",
1157                 (unsigned long long)mid ));
1158
1159         status = smbd_smb2_request_dispatch(smb2req);
1160         if (!NT_STATUS_IS_OK(status)) {
1161                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1162                 return;
1163         }
1164 }
1165
1166 void schedule_deferred_open_message_smb2(
1167         struct smbd_server_connection *sconn, uint64_t mid)
1168 {
1169         struct smbd_smb2_create_state *state = NULL;
1170         struct smbd_smb2_request *smb2req;
1171
1172         smb2req = find_open_smb2req(sconn, mid);
1173
1174         if (!smb2req) {
1175                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1176                         "can't find mid %llu\n",
1177                         (unsigned long long)mid ));
1178                 return;
1179         }
1180         if (!smb2req->subreq) {
1181                 return;
1182         }
1183         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1184                 return;
1185         }
1186         state = tevent_req_data(smb2req->subreq,
1187                         struct smbd_smb2_create_state);
1188         if (!state) {
1189                 return;
1190         }
1191
1192         /* Ensure we don't have any outstanding timer event. */
1193         TALLOC_FREE(state->te);
1194         /* Ensure we don't have any outstanding immediate event. */
1195         TALLOC_FREE(state->im);
1196
1197         /*
1198          * This is subtle. We must null out the callback
1199          * before resheduling, else the first call to
1200          * tevent_req_nterror() causes the _receive()
1201          * function to be called, this causing tevent_req_post()
1202          * to crash.
1203          */
1204         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1205
1206         state->im = tevent_create_immediate(smb2req);
1207         if (!state->im) {
1208                 smbd_server_connection_terminate(smb2req->sconn,
1209                         nt_errstr(NT_STATUS_NO_MEMORY));
1210                 return;
1211         }
1212
1213         DEBUG(10,("schedule_deferred_open_message_smb2: "
1214                 "re-processing mid %llu\n",
1215                 (unsigned long long)mid ));
1216
1217         tevent_schedule_immediate(state->im,
1218                         smb2req->sconn->ev_ctx,
1219                         smbd_smb2_create_request_dispatch_immediate,
1220                         smb2req);
1221 }
1222
1223 /*********************************************************
1224  Re-process this call.
1225 *********************************************************/
1226
1227 static void smb2_deferred_open_timer(struct event_context *ev,
1228                                         struct timed_event *te,
1229                                         struct timeval _tval,
1230                                         void *private_data)
1231 {
1232         NTSTATUS status;
1233         struct smbd_smb2_create_state *state = NULL;
1234         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1235                                                 struct smbd_smb2_request);
1236
1237         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1238                 smb2req->current_idx,
1239                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1240
1241         state = tevent_req_data(smb2req->subreq,
1242                         struct smbd_smb2_create_state);
1243         if (!state) {
1244                 return;
1245         }
1246         /*
1247          * Null this out, don't talloc_free. It will
1248          * be talloc_free'd by the tevent library when
1249          * this returns.
1250          */
1251         state->te = NULL;
1252         /* Ensure we don't have any outstanding immediate event. */
1253         TALLOC_FREE(state->im);
1254
1255         /*
1256          * This is subtle. We must null out the callback
1257          * before resheduling, else the first call to
1258          * tevent_req_nterror() causes the _receive()
1259          * function to be called, this causing tevent_req_post()
1260          * to crash.
1261          */
1262         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1263
1264         status = smbd_smb2_request_dispatch(smb2req);
1265
1266         if (!NT_STATUS_IS_OK(status)) {
1267                 smbd_server_connection_terminate(smb2req->sconn,
1268                                 nt_errstr(status));
1269         }
1270 }
1271
1272 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1273 {
1274         struct smbd_smb2_request *smb2req = NULL;
1275         struct smbd_smb2_create_state *state = tevent_req_data(req,
1276                                 struct smbd_smb2_create_state);
1277         uint64_t mid;
1278
1279         if (!state) {
1280                 return false;
1281         }
1282
1283         if (!state->smb2req) {
1284                 return false;
1285         }
1286
1287         smb2req = state->smb2req;
1288         mid = get_mid_from_smb2req(smb2req);
1289
1290         remove_deferred_open_entry(state->id, mid,
1291                                    messaging_server_id(smb2req->sconn->msg_ctx));
1292         remove_deferred_open_message_smb2_internal(smb2req, mid);
1293         smb2req->cancelled = true;
1294
1295         tevent_req_done(req);
1296         return true;
1297 }
1298
1299 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1300                                 struct timeval request_time,
1301                                 struct timeval timeout,
1302                                 struct file_id id,
1303                                 char *private_data,
1304                                 size_t priv_len)
1305 {
1306         struct tevent_req *req = NULL;
1307         struct smbd_smb2_create_state *state = NULL;
1308         struct timeval end_time;
1309
1310         if (!smb2req) {
1311                 return false;
1312         }
1313         req = smb2req->subreq;
1314         if (!req) {
1315                 return false;
1316         }
1317         state = tevent_req_data(req, struct smbd_smb2_create_state);
1318         if (!state) {
1319                 return false;
1320         }
1321         state->id = id;
1322         state->request_time = request_time;
1323         state->private_data = data_blob_talloc(state, private_data,
1324                                                 priv_len);
1325         if (!state->private_data.data) {
1326                 return false;
1327         }
1328
1329         /* Re-schedule us to retry on timer expiry. */
1330         end_time = timeval_sum(&request_time, &timeout);
1331
1332         DEBUG(10,("push_deferred_open_message_smb2: "
1333                 "timeout at %s\n",
1334                 timeval_string(talloc_tos(),
1335                                 &end_time,
1336                                 true) ));
1337
1338         state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1339                                 state,
1340                                 end_time,
1341                                 smb2_deferred_open_timer,
1342                                 smb2req);
1343         if (!state->te) {
1344                 return false;
1345         }
1346
1347         /* allow this request to be canceled */
1348         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1349
1350         return true;
1351 }