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 "../librpc/gen_ndr/ndr_smb2_lease_struct.h"
  29 #include "../lib/util/tevent_ntstatus.h"
  30 #include "messages.h"
  31
  32 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  33 {
  34         switch(in_oplock_level) {
  35         case SMB2_OPLOCK_LEVEL_NONE:
  36                 return NO_OPLOCK;
  37         case SMB2_OPLOCK_LEVEL_II:
  38                 return LEVEL_II_OPLOCK;
  39         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  40                 return EXCLUSIVE_OPLOCK;
  41         case SMB2_OPLOCK_LEVEL_BATCH:
  42                 return BATCH_OPLOCK;
  43         case SMB2_OPLOCK_LEVEL_LEASE:
  44                 return LEASE_OPLOCK;
  45         default:
  46                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  47                         "unknown level %u\n",
  48                         (unsigned int)in_oplock_level));
  49                 return NO_OPLOCK;
  50         }
  51 }
  52
  53 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  54 {
  55         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  56                 return SMB2_OPLOCK_LEVEL_BATCH;
  57         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  58                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  59         } else if (oplock_type == LEVEL_II_OPLOCK) {
  60                 return SMB2_OPLOCK_LEVEL_II;
  61         } else if (oplock_type == LEASE_OPLOCK) {
  62                 return SMB2_OPLOCK_LEVEL_LEASE;
  63         } else {
  64                 return SMB2_OPLOCK_LEVEL_NONE;
  65         }
  66 }
  67
  68 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  69                         struct tevent_context *ev,
  70                         struct smbd_smb2_request *smb2req,
  71                         uint8_t in_oplock_level,
  72                         uint32_t in_impersonation_level,
  73                         uint32_t in_desired_access,
  74                         uint32_t in_file_attributes,
  75                         uint32_t in_share_access,
  76                         uint32_t in_create_disposition,
  77                         uint32_t in_create_options,
  78                         const char *in_name,
  79                         struct smb2_create_blobs in_context_blobs);
  80 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  81                         TALLOC_CTX *mem_ctx,
  82                         uint8_t *out_oplock_level,
  83                         uint32_t *out_create_action,
  84                         struct timespec *out_creation_ts,
  85                         struct timespec *out_last_access_ts,
  86                         struct timespec *out_last_write_ts,
  87                         struct timespec *out_change_ts,
  88                         uint64_t *out_allocation_size,
  89                         uint64_t *out_end_of_file,
  90                         uint32_t *out_file_attributes,
  91                         uint64_t *out_file_id_persistent,
  92                         uint64_t *out_file_id_volatile,
  93                         struct smb2_create_blobs *out_context_blobs);
  94
  95 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  96 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  97 {
  98         const uint8_t *inbody;
  99         const struct iovec *indyniov;
 100         uint8_t in_oplock_level;
 101         uint32_t in_impersonation_level;
 102         uint32_t in_desired_access;
 103         uint32_t in_file_attributes;
 104         uint32_t in_share_access;
 105         uint32_t in_create_disposition;
 106         uint32_t in_create_options;
 107         uint16_t in_name_offset;
 108         uint16_t in_name_length;
 109         DATA_BLOB in_name_buffer;
 110         char *in_name_string;
 111         size_t in_name_string_size;
 112         uint32_t name_offset = 0;
 113         uint32_t name_available_length = 0;
 114         uint32_t in_context_offset;
 115         uint32_t in_context_length;
 116         DATA_BLOB in_context_buffer;
 117         struct smb2_create_blobs in_context_blobs;
 118         uint32_t context_offset = 0;
 119         uint32_t context_available_length = 0;
 120         uint32_t dyn_offset;
 121         NTSTATUS status;
 122         bool ok;
 123         struct tevent_req *tsubreq;
 124
 125         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 126         if (!NT_STATUS_IS_OK(status)) {
 127                 return smbd_smb2_request_error(smb2req, status);
 128         }
 129         inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
 130
 131         in_oplock_level         = CVAL(inbody, 0x03);
 132         in_impersonation_level  = IVAL(inbody, 0x04);
 133         in_desired_access       = IVAL(inbody, 0x18);
 134         in_file_attributes      = IVAL(inbody, 0x1C);
 135         in_share_access         = IVAL(inbody, 0x20);
 136         in_create_disposition   = IVAL(inbody, 0x24);
 137         in_create_options       = IVAL(inbody, 0x28);
 138         in_name_offset          = SVAL(inbody, 0x2C);
 139         in_name_length          = SVAL(inbody, 0x2E);
 140         in_context_offset       = IVAL(inbody, 0x30);
 141         in_context_length       = IVAL(inbody, 0x34);
 142
 143         /*
 144          * First check if the dynamic name and context buffers
 145          * are correctly specified.
 146          *
 147          * Note: That we don't check if the name and context buffers
 148          *       overlap
 149          */
 150
 151         dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
 152
 153         if (in_name_offset == 0 && in_name_length == 0) {
 154                 /* This is ok */
 155                 name_offset = 0;
 156         } else if (in_name_offset < dyn_offset) {
 157                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 158         } else {
 159                 name_offset = in_name_offset - dyn_offset;
 160         }
 161
 162         indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
 163
 164         if (name_offset > indyniov->iov_len) {
 165                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 166         }
 167
 168         name_available_length = indyniov->iov_len - name_offset;
 169
 170         if (in_name_length > name_available_length) {
 171                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 172         }
 173
 174         in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
 175         in_name_buffer.length = in_name_length;
 176
 177         if (in_context_offset == 0 && in_context_length == 0) {
 178                 /* This is ok */
 179                 context_offset = 0;
 180         } else if (in_context_offset < dyn_offset) {
 181                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 182         } else {
 183                 context_offset = in_context_offset - dyn_offset;
 184         }
 185
 186         if (context_offset > indyniov->iov_len) {
 187                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 188         }
 189
 190         context_available_length = indyniov->iov_len - context_offset;
 191
 192         if (in_context_length > context_available_length) {
 193                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 194         }
 195
 196         in_context_buffer.data = (uint8_t *)indyniov->iov_base +
 197                 context_offset;
 198         in_context_buffer.length = in_context_length;
 199
 200         /*
 201          * Now interpret the name and context buffers
 202          */
 203
 204         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 205                                    in_name_buffer.data,
 206                                    in_name_buffer.length,
 207                                    &in_name_string,
 208                                    &in_name_string_size);
 209         if (!ok) {
 210                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 211         }
 212
 213         if (in_name_buffer.length == 0) {
 214                 in_name_string_size = 0;
 215         }
 216
 217         if (strlen(in_name_string) != in_name_string_size) {
 218                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 219         }
 220
 221         ZERO_STRUCT(in_context_blobs);
 222         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 223         if (!NT_STATUS_IS_OK(status)) {
 224                 return smbd_smb2_request_error(smb2req, status);
 225         }
 226
 227         tsubreq = smbd_smb2_create_send(smb2req,
 228                                        smb2req->sconn->ev_ctx,
 229                                        smb2req,
 230                                        in_oplock_level,
 231                                        in_impersonation_level,
 232                                        in_desired_access,
 233                                        in_file_attributes,
 234                                        in_share_access,
 235                                        in_create_disposition,
 236                                        in_create_options,
 237                                        in_name_string,
 238                                        in_context_blobs);
 239         if (tsubreq == NULL) {
 240                 smb2req->subreq = NULL;
 241                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 242         }
 243         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 244
 245         return smbd_smb2_request_pending_queue(smb2req, tsubreq, 500);
 246 }
 247
 248 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 249 {
 250         uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
 251         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 252 }
 253
 254 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 255 {
 256         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 257                                         struct smbd_smb2_request);
 258         DATA_BLOB outbody;
 259         DATA_BLOB outdyn;
 260         uint8_t out_oplock_level = 0;
 261         uint32_t out_create_action = 0;
 262         connection_struct *conn = smb2req->tcon->compat;
 263         struct timespec out_creation_ts = { 0, };
 264         struct timespec out_last_access_ts = { 0, };
 265         struct timespec out_last_write_ts = { 0, };
 266         struct timespec out_change_ts = { 0, };
 267         uint64_t out_allocation_size = 0;
 268         uint64_t out_end_of_file = 0;
 269         uint32_t out_file_attributes = 0;
 270         uint64_t out_file_id_persistent = 0;
 271         uint64_t out_file_id_volatile = 0;
 272         struct smb2_create_blobs out_context_blobs;
 273         DATA_BLOB out_context_buffer;
 274         uint16_t out_context_buffer_offset = 0;
 275         NTSTATUS status;
 276         NTSTATUS error; /* transport error */
 277
 278         status = smbd_smb2_create_recv(tsubreq,
 279                                        smb2req,
 280                                        &out_oplock_level,
 281                                        &out_create_action,
 282                                        &out_creation_ts,
 283                                        &out_last_access_ts,
 284                                        &out_last_write_ts,
 285                                        &out_change_ts,
 286                                        &out_allocation_size,
 287                                        &out_end_of_file,
 288                                        &out_file_attributes,
 289                                        &out_file_id_persistent,
 290                                        &out_file_id_volatile,
 291                                        &out_context_blobs);
 292         if (!NT_STATUS_IS_OK(status)) {
 293                 error = smbd_smb2_request_error(smb2req, status);
 294                 if (!NT_STATUS_IS_OK(error)) {
 295                         smbd_server_connection_terminate(smb2req->xconn,
 296                                                          nt_errstr(error));
 297                         return;
 298                 }
 299                 return;
 300         }
 301
 302         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 303         if (!NT_STATUS_IS_OK(status)) {
 304                 error = smbd_smb2_request_error(smb2req, status);
 305                 if (!NT_STATUS_IS_OK(error)) {
 306                         smbd_server_connection_terminate(smb2req->xconn,
 307                                                          nt_errstr(error));
 308                         return;
 309                 }
 310                 return;
 311         }
 312
 313         if (out_context_buffer.length > 0) {
 314                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 315         }
 316
 317         outbody = smbd_smb2_generate_outbody(smb2req, 0x58);
 318         if (outbody.data == NULL) {
 319                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 320                 if (!NT_STATUS_IS_OK(error)) {
 321                         smbd_server_connection_terminate(smb2req->xconn,
 322                                                          nt_errstr(error));
 323                         return;
 324                 }
 325                 return;
 326         }
 327
 328         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 329         SCVAL(outbody.data, 0x02,
 330               out_oplock_level);                /* oplock level */
 331         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 332         SIVAL(outbody.data, 0x04,
 333               out_create_action);               /* create action */
 334         put_long_date_timespec(conn->ts_res,
 335               (char *)outbody.data + 0x08,
 336               out_creation_ts);                 /* creation time */
 337         put_long_date_timespec(conn->ts_res,
 338               (char *)outbody.data + 0x10,
 339               out_last_access_ts);              /* last access time */
 340         put_long_date_timespec(conn->ts_res,
 341               (char *)outbody.data + 0x18,
 342               out_last_write_ts);               /* last write time */
 343         put_long_date_timespec(conn->ts_res,
 344               (char *)outbody.data + 0x20,
 345               out_change_ts);                   /* change time */
 346         SBVAL(outbody.data, 0x28,
 347               out_allocation_size);             /* allocation size */
 348         SBVAL(outbody.data, 0x30,
 349               out_end_of_file);                 /* end of file */
 350         SIVAL(outbody.data, 0x38,
 351               out_file_attributes);             /* file attributes */
 352         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 353         SBVAL(outbody.data, 0x40,
 354               out_file_id_persistent);          /* file id (persistent) */
 355         SBVAL(outbody.data, 0x48,
 356               out_file_id_volatile);            /* file id (volatile) */
 357         SIVAL(outbody.data, 0x50,
 358               out_context_buffer_offset);       /* create contexts offset */
 359         SIVAL(outbody.data, 0x54,
 360               out_context_buffer.length);       /* create contexts length */
 361
 362         outdyn = out_context_buffer;
 363
 364         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 365         if (!NT_STATUS_IS_OK(error)) {
 366                 smbd_server_connection_terminate(smb2req->xconn,
 367                                                  nt_errstr(error));
 368                 return;
 369         }
 370 }
 371
 372 static bool smb2_lease_key_valid(const struct smb2_lease_key *key)
 373 {
 374         return ((key->data[0] != 0) || (key->data[1] != 0));
 375 }
 376
 377 static NTSTATUS smbd_smb2_create_durable_lease_check(
 378         const char *requested_filename, const struct files_struct *fsp,
 379         const struct smb2_lease *lease_ptr)
 380 {
 381         struct smb_filename *smb_fname = NULL;
 382         uint32_t ucf_flags = UCF_PREP_CREATEFILE;
 383         NTSTATUS status;
 384
 385         if (lease_ptr == NULL) {
 386                 if (fsp->oplock_type != LEASE_OPLOCK) {
 387                         return NT_STATUS_OK;
 388                 }
 389                 DEBUG(10, ("Reopened file has lease, but no lease "
 390                            "requested\n"));
 391                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 392         }
 393
 394         if (fsp->oplock_type != LEASE_OPLOCK) {
 395                 DEBUG(10, ("Lease requested, but reopened file has no "
 396                            "lease\n"));
 397                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 398         }
 399
 400         if (!smb2_lease_key_equal(&lease_ptr->lease_key,
 401                                   &fsp->lease->lease.lease_key)) {
 402                 DEBUG(10, ("Different lease key requested than found "
 403                            "in reopened file\n"));
 404                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 405         }
 406
 407         status = filename_convert(talloc_tos(), fsp->conn, false,
 408                                   requested_filename, ucf_flags,
 409                                   NULL, &smb_fname);
 410         if (!NT_STATUS_IS_OK(status)) {
 411                 DEBUG(10, ("filename_convert returned %s\n",
 412                            nt_errstr(status)));
 413                 return status;
 414         }
 415
 416         if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
 417                 DEBUG(10, ("Lease requested for file %s, reopened file "
 418                            "is named %s\n", smb_fname->base_name,
 419                            fsp->fsp_name->base_name));
 420                 TALLOC_FREE(smb_fname);
 421                 return NT_STATUS_INVALID_PARAMETER;
 422         }
 423
 424         TALLOC_FREE(smb_fname);
 425
 426         return NT_STATUS_OK;
 427 }
 428
 429 struct smbd_smb2_create_state {
 430         struct smbd_smb2_request *smb2req;
 431         struct smb_request *smb1req;
 432         bool open_was_deferred;
 433         struct tevent_timer *te;
 434         struct tevent_immediate *im;
 435         struct timeval request_time;
 436         struct file_id id;
 437         struct deferred_open_record *open_rec;
 438         uint8_t out_oplock_level;
 439         uint32_t out_create_action;
 440         struct timespec out_creation_ts;
 441         struct timespec out_last_access_ts;
 442         struct timespec out_last_write_ts;
 443         struct timespec out_change_ts;
 444         uint64_t out_allocation_size;
 445         uint64_t out_end_of_file;
 446         uint32_t out_file_attributes;
 447         uint64_t out_file_id_persistent;
 448         uint64_t out_file_id_volatile;
 449         struct smb2_create_blobs *out_context_blobs;
 450 };
 451
 452 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 453                         struct tevent_context *ev,
 454                         struct smbd_smb2_request *smb2req,
 455                         uint8_t in_oplock_level,
 456                         uint32_t in_impersonation_level,
 457                         uint32_t in_desired_access,
 458                         uint32_t in_file_attributes,
 459                         uint32_t in_share_access,
 460                         uint32_t in_create_disposition,
 461                         uint32_t in_create_options,
 462                         const char *in_name,
 463                         struct smb2_create_blobs in_context_blobs)
 464 {
 465         struct tevent_req *req = NULL;
 466         struct smbd_smb2_create_state *state = NULL;
 467         NTSTATUS status;
 468         struct smb_request *smb1req = NULL;
 469         files_struct *result = NULL;
 470         int info;
 471         int requested_oplock_level;
 472         struct smb2_create_blob *dhnc = NULL;
 473         struct smb2_create_blob *dh2c = NULL;
 474         struct smb2_create_blob *dhnq = NULL;
 475         struct smb2_create_blob *dh2q = NULL;
 476         struct smb2_create_blob *rqls = NULL;
 477         struct smbXsrv_open *op = NULL;
 478
 479         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
 480                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 481         } else {
 482                 requested_oplock_level = in_oplock_level;
 483         }
 484
 485
 486         if (smb2req->subreq == NULL) {
 487                 /* New create call. */
 488                 req = tevent_req_create(mem_ctx, &state,
 489                                 struct smbd_smb2_create_state);
 490                 if (req == NULL) {
 491                         return NULL;
 492                 }
 493                 state->smb2req = smb2req;
 494
 495                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 496                 if (tevent_req_nomem(smb1req, req)) {
 497                         return tevent_req_post(req, ev);
 498                 }
 499                 state->smb1req = smb1req;
 500                 smb2req->subreq = req;
 501                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 502                         in_name));
 503         } else {
 504                 /* Re-entrant create call. */
 505                 req = smb2req->subreq;
 506                 state = tevent_req_data(req,
 507                                 struct smbd_smb2_create_state);
 508                 smb1req = state->smb1req;
 509                 TALLOC_FREE(state->out_context_blobs);
 510                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 511                         in_name ));
 512         }
 513
 514         state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
 515         if (tevent_req_nomem(state->out_context_blobs, req)) {
 516                 return tevent_req_post(req, ev);
 517         }
 518
 519         dhnq = smb2_create_blob_find(&in_context_blobs,
 520                                      SMB2_CREATE_TAG_DHNQ);
 521         dhnc = smb2_create_blob_find(&in_context_blobs,
 522                                      SMB2_CREATE_TAG_DHNC);
 523         dh2q = smb2_create_blob_find(&in_context_blobs,
 524                                      SMB2_CREATE_TAG_DH2Q);
 525         dh2c = smb2_create_blob_find(&in_context_blobs,
 526                                      SMB2_CREATE_TAG_DH2C);
 527         if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
 528                 rqls = smb2_create_blob_find(&in_context_blobs,
 529                                              SMB2_CREATE_TAG_RQLS);
 530         }
 531
 532         if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
 533             (dh2q && dh2c))
 534         {
 535                 /* not both are allowed at the same time */
 536                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 537                 return tevent_req_post(req, ev);
 538         }
 539
 540         if (dhnc) {
 541                 uint32_t num_blobs_allowed;
 542
 543                 if (dhnc->data.length != 16) {
 544                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 545                         return tevent_req_post(req, ev);
 546                 }
 547
 548                 /*
 549                  * According to MS-SMB2: 3.3.5.9.7, "Handling the
 550                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
 551                  * we should ignore an additional dhnq blob, but fail
 552                  * the request (with status OBJECT_NAME_NOT_FOUND) if
 553                  * any other extra create blob has been provided.
 554                  *
 555                  * (Note that the cases of an additional dh2q or dh2c blob
 556                  *  which require a different error code, have been treated
 557                  *  above.)
 558                  *
 559                  * TODO:
 560                  * This is only true for the oplock case:
 561                  * For leases, lease request is required additionally.
 562                  */
 563
 564                 if (dhnq) {
 565                         num_blobs_allowed = 2;
 566                 } else {
 567                         num_blobs_allowed = 1;
 568                 }
 569
 570                 if (rqls != NULL) {
 571                         num_blobs_allowed += 1;
 572                 }
 573
 574                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 575                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 576                         return tevent_req_post(req, ev);
 577                 }
 578         }
 579
 580         if (dh2c) {
 581                 uint32_t num_blobs_allowed;
 582
 583                 if (dh2c->data.length != 36) {
 584                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 585                         return tevent_req_post(req, ev);
 586                 }
 587
 588                 /*
 589                  * According to MS-SMB2: 3.3.5.9.12, "Handling the
 590                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
 591                  * we should fail the request with status
 592                  * OBJECT_NAME_NOT_FOUND if any other create blob has been
 593                  * provided.
 594                  *
 595                  * (Note that the cases of an additional dhnq, dhnc or dh2q
 596                  *  blob which require a different error code, have been
 597                  *  treated above.)
 598                  *
 599                  * TODO:
 600                  * This is only true for the oplock case:
 601                  * For leases, lease request is required additionally!
 602                  */
 603
 604                 num_blobs_allowed = 1;
 605
 606                 if (rqls != NULL) {
 607                         num_blobs_allowed += 1;
 608                 }
 609
 610                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 611                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 612                         return tevent_req_post(req, ev);
 613                 }
 614         }
 615
 616         if (IS_IPC(smb1req->conn)) {
 617                 const char *pipe_name = in_name;
 618
 619                 if (dhnc || dh2c) {
 620                         /* durable handles are not supported on IPC$ */
 621                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 622                         return tevent_req_post(req, ev);
 623                 }
 624
 625                 if (!lp_nt_pipe_support()) {
 626                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 627                         return tevent_req_post(req, ev);
 628                 }
 629
 630                 status = open_np_file(smb1req, pipe_name, &result);
 631                 if (!NT_STATUS_IS_OK(status)) {
 632                         tevent_req_nterror(req, status);
 633                         return tevent_req_post(req, ev);
 634                 }
 635                 info = FILE_WAS_OPENED;
 636         } else if (CAN_PRINT(smb1req->conn)) {
 637                 if (dhnc || dh2c) {
 638                         /* durable handles are not supported on printers */
 639                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 640                         return tevent_req_post(req, ev);
 641                 }
 642
 643                 status = file_new(smb1req, smb1req->conn, &result);
 644                 if(!NT_STATUS_IS_OK(status)) {
 645                         tevent_req_nterror(req, status);
 646                         return tevent_req_post(req, ev);
 647                 }
 648
 649                 status = print_spool_open(result, in_name,
 650                                           smb1req->vuid);
 651                 if (!NT_STATUS_IS_OK(status)) {
 652                         file_free(smb1req, result);
 653                         tevent_req_nterror(req, status);
 654                         return tevent_req_post(req, ev);
 655                 }
 656                 info = FILE_WAS_CREATED;
 657         } else {
 658                 char *fname;
 659                 struct smb2_create_blob *exta = NULL;
 660                 struct ea_list *ea_list = NULL;
 661                 struct smb2_create_blob *mxac = NULL;
 662                 NTTIME max_access_time = 0;
 663                 struct smb2_create_blob *secd = NULL;
 664                 struct security_descriptor *sec_desc = NULL;
 665                 struct smb2_create_blob *alsi = NULL;
 666                 uint64_t allocation_size = 0;
 667                 struct smb2_create_blob *twrp = NULL;
 668                 struct smb2_create_blob *qfid = NULL;
 669                 struct GUID _create_guid = GUID_zero();
 670                 struct GUID *create_guid = NULL;
 671                 bool update_open = false;
 672                 bool durable_requested = false;
 673                 uint32_t durable_timeout_msec = 0;
 674                 bool do_durable_reconnect = false;
 675                 uint64_t persistent_id = 0;
 676                 struct smb2_lease lease;
 677                 struct smb2_lease *lease_ptr = NULL;
 678                 ssize_t lease_len = -1;
 679 #if 0
 680                 struct smb2_create_blob *svhdx = NULL;
 681 #endif
 682
 683                 exta = smb2_create_blob_find(&in_context_blobs,
 684                                              SMB2_CREATE_TAG_EXTA);
 685                 mxac = smb2_create_blob_find(&in_context_blobs,
 686                                              SMB2_CREATE_TAG_MXAC);
 687                 secd = smb2_create_blob_find(&in_context_blobs,
 688                                              SMB2_CREATE_TAG_SECD);
 689                 alsi = smb2_create_blob_find(&in_context_blobs,
 690                                              SMB2_CREATE_TAG_ALSI);
 691                 twrp = smb2_create_blob_find(&in_context_blobs,
 692                                              SMB2_CREATE_TAG_TWRP);
 693                 qfid = smb2_create_blob_find(&in_context_blobs,
 694                                              SMB2_CREATE_TAG_QFID);
 695 #if 0
 696                 if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
 697                         /*
 698                          * This was introduced with SMB3_02
 699                          */
 700                         svhdx = smb2_create_blob_find(&in_context_blobs,
 701                                                       SVHDX_OPEN_DEVICE_CONTEXT);
 702                 }
 703 #endif
 704
 705                 fname = talloc_strdup(state, in_name);
 706                 if (tevent_req_nomem(fname, req)) {
 707                         return tevent_req_post(req, ev);
 708                 }
 709
 710                 if (exta) {
 711                         if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
 712                                 tevent_req_nterror(req,
 713                                         NT_STATUS_EAS_NOT_SUPPORTED);
 714                                 return tevent_req_post(req, ev);
 715                         }
 716
 717                         ea_list = read_nttrans_ea_list(mem_ctx,
 718                                 (const char *)exta->data.data, exta->data.length);
 719                         if (!ea_list) {
 720                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 721                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 722                                 return tevent_req_post(req, ev);
 723                         }
 724
 725                         if (ea_list_has_invalid_name(ea_list)) {
 726                                 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
 727                                 return tevent_req_post(req, ev);
 728                         }
 729                 }
 730
 731                 if (mxac) {
 732                         if (mxac->data.length == 0) {
 733                                 max_access_time = 0;
 734                         } else if (mxac->data.length == 8) {
 735                                 max_access_time = BVAL(mxac->data.data, 0);
 736                         } else {
 737                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 738                                 return tevent_req_post(req, ev);
 739                         }
 740                 }
 741
 742                 if (secd) {
 743                         enum ndr_err_code ndr_err;
 744
 745                         sec_desc = talloc_zero(state, struct security_descriptor);
 746                         if (tevent_req_nomem(sec_desc, req)) {
 747                                 return tevent_req_post(req, ev);
 748                         }
 749
 750                         ndr_err = ndr_pull_struct_blob(&secd->data,
 751                                 sec_desc, sec_desc,
 752                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 753                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 754                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 755                                          ndr_errstr(ndr_err)));
 756                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 757                                 return tevent_req_post(req, ev);
 758                         }
 759                 }
 760
 761                 if (dhnq) {
 762                         if (dhnq->data.length != 16) {
 763                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 764                                 return tevent_req_post(req, ev);
 765                         }
 766
 767                         if (dh2q) {
 768                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 769                                 return tevent_req_post(req, ev);
 770                         }
 771
 772                         /*
 773                          * durable handle request is processed below.
 774                          */
 775                         durable_requested = true;
 776                         /*
 777                          * Set the timeout to 16 mins.
 778                          *
 779                          * TODO: test this against Windows 2012
 780                          *       as the default for durable v2 is 1 min.
 781                          */
 782                         durable_timeout_msec = (16*60*1000);
 783                 }
 784
 785                 if (dh2q) {
 786                         const uint8_t *p = dh2q->data.data;
 787                         uint32_t durable_v2_timeout = 0;
 788                         DATA_BLOB create_guid_blob;
 789
 790                         if (dh2q->data.length != 32) {
 791                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 792                                 return tevent_req_post(req, ev);
 793                         }
 794
 795                         if (dhnq) {
 796                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 797                                 return tevent_req_post(req, ev);
 798                         }
 799
 800                         durable_v2_timeout = IVAL(p, 0);
 801                         create_guid_blob = data_blob_const(p + 16, 16);
 802
 803                         status = GUID_from_ndr_blob(&create_guid_blob,
 804                                                     &_create_guid);
 805                         if (tevent_req_nterror(req, status)) {
 806                                 return tevent_req_post(req, ev);
 807                         }
 808                         create_guid = &_create_guid;
 809                         /*
 810                          * we need to store the create_guid later
 811                          */
 812                         update_open = true;
 813
 814                         /*
 815                          * durable handle v2 request processed below
 816                          */
 817                         durable_requested = true;
 818                         durable_timeout_msec = durable_v2_timeout;
 819                         if (durable_timeout_msec == 0) {
 820                                 /*
 821                                  * Set the timeout to 1 min as default.
 822                                  *
 823                                  * This matches Windows 2012.
 824                                  */
 825                                 durable_timeout_msec = (60*1000);
 826                         }
 827                 }
 828
 829                 if (dhnc) {
 830                         persistent_id = BVAL(dhnc->data.data, 0);
 831
 832                         do_durable_reconnect = true;
 833                 }
 834
 835                 if (dh2c) {
 836                         const uint8_t *p = dh2c->data.data;
 837                         DATA_BLOB create_guid_blob;
 838
 839                         persistent_id = BVAL(p, 0);
 840                         create_guid_blob = data_blob_const(p + 16, 16);
 841
 842                         status = GUID_from_ndr_blob(&create_guid_blob,
 843                                                     &_create_guid);
 844                         if (tevent_req_nterror(req, status)) {
 845                                 return tevent_req_post(req, ev);
 846                         }
 847                         create_guid = &_create_guid;
 848
 849                         do_durable_reconnect = true;
 850                 }
 851
 852                 if (alsi) {
 853                         if (alsi->data.length != 8) {
 854                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 855                                 return tevent_req_post(req, ev);
 856                         }
 857                         allocation_size = BVAL(alsi->data.data, 0);
 858                 }
 859
 860                 if (twrp) {
 861                         NTTIME nttime;
 862                         time_t t;
 863                         struct tm *tm;
 864
 865                         if (twrp->data.length != 8) {
 866                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 867                                 return tevent_req_post(req, ev);
 868                         }
 869
 870                         nttime = BVAL(twrp->data.data, 0);
 871                         t = nt_time_to_unix(nttime);
 872                         tm = gmtime(&t);
 873
 874                         TALLOC_FREE(fname);
 875                         fname = talloc_asprintf(state,
 876                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 877                                         tm->tm_year + 1900,
 878                                         tm->tm_mon + 1,
 879                                         tm->tm_mday,
 880                                         tm->tm_hour,
 881                                         tm->tm_min,
 882                                         tm->tm_sec,
 883                                         in_name);
 884                         if (tevent_req_nomem(fname, req)) {
 885                                 return tevent_req_post(req, ev);
 886                         }
 887                 }
 888
 889                 if (qfid) {
 890                         if (qfid->data.length != 0) {
 891                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 892                                 return tevent_req_post(req, ev);
 893                         }
 894                 }
 895
 896                 if (rqls) {
 897                         lease_len = smb2_lease_pull(
 898                                 rqls->data.data, rqls->data.length, &lease);
 899                         if (lease_len == -1) {
 900                                 tevent_req_nterror(
 901                                         req, NT_STATUS_INVALID_PARAMETER);
 902                                 return tevent_req_post(req, ev);
 903                         }
 904                         lease_ptr = &lease;
 905
 906                         if (DEBUGLEVEL >= 10) {
 907                                 DEBUG(10, ("Got lease request size %d\n",
 908                                            (int)lease_len));
 909                                 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
 910                         }
 911
 912                         if (!smb2_lease_key_valid(&lease.lease_key)) {
 913                                 lease_ptr = NULL;
 914                                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 915                         }
 916
 917                         if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
 918                             (lease.lease_version != 1)) {
 919                                 DEBUG(10, ("v2 lease key only for SMB3\n"));
 920                                 lease_ptr = NULL;
 921                         }
 922                 }
 923
 924                 /* these are ignored for SMB2 */
 925                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 926                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 927
 928                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 929
 930                 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
 931
 932                 /*
 933                  * For the backend file open procedure, there are
 934                  * two possible modes: durable_reconnect or not.
 935                  */
 936                 if (do_durable_reconnect) {
 937                         DATA_BLOB new_cookie = data_blob_null;
 938                         NTTIME now = timeval_to_nttime(&smb2req->request_time);
 939
 940                         status = smb2srv_open_recreate(smb2req->xconn,
 941                                                 smb1req->conn->session_info,
 942                                                 persistent_id, create_guid,
 943                                                 now, &op);
 944                         if (!NT_STATUS_IS_OK(status)) {
 945                                 DEBUG(3, ("smbd_smb2_create_send: "
 946                                           "smb2srv_open_recreate failed: %s\n",
 947                                           nt_errstr(status)));
 948                                 tevent_req_nterror(req, status);
 949                                 return tevent_req_post(req, ev);
 950                         }
 951
 952                         DEBUG(10, ("smb2_create_send: %s to recreate the "
 953                                    "smb2srv_open struct for a durable handle.\n",
 954                                    op->global->durable ? "succeded" : "failed"));
 955
 956                         if (!op->global->durable) {
 957                                 talloc_free(op);
 958                                 tevent_req_nterror(req,
 959                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 960                                 return tevent_req_post(req, ev);
 961                         }
 962
 963                         status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
 964                                                 smb1req,
 965                                                 op, /* smbXsrv_open input */
 966                                                 op->global->backend_cookie,
 967                                                 op, /* TALLOC_CTX */
 968                                                 &result, &new_cookie);
 969                         if (!NT_STATUS_IS_OK(status)) {
 970                                 NTSTATUS return_status;
 971
 972                                 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 973
 974                                 DEBUG(3, ("smbd_smb2_create_send: "
 975                                           "durable_reconnect failed: %s => %s\n",
 976                                           nt_errstr(status),
 977                                           nt_errstr(return_status)));
 978
 979                                 tevent_req_nterror(req, return_status);
 980                                 return tevent_req_post(req, ev);
 981                         }
 982
 983                         DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
 984                                    (unsigned)result->oplock_type, lease_ptr));
 985
 986                         status = smbd_smb2_create_durable_lease_check(
 987                                 fname, result, lease_ptr);
 988                         if (!NT_STATUS_IS_OK(status)) {
 989                                 close_file(smb1req, result, SHUTDOWN_CLOSE);
 990                                 tevent_req_nterror(req, status);
 991                                 return tevent_req_post(req, ev);
 992                         }
 993
 994                         data_blob_free(&op->global->backend_cookie);
 995                         op->global->backend_cookie = new_cookie;
 996
 997                         op->status = NT_STATUS_OK;
 998                         op->global->disconnect_time = 0;
 999
1000                         /* save the timout for later update */
1001                         durable_timeout_msec = op->global->durable_timeout_msec;
1002
1003                         update_open = true;
1004
1005                         info = FILE_WAS_OPENED;
1006                 } else {
1007                         struct smb_filename *smb_fname = NULL;
1008                         uint32_t ucf_flags = UCF_PREP_CREATEFILE;
1009
1010                         if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1011                                 if (lease_ptr == NULL) {
1012                                         requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1013                                 }
1014                         } else {
1015                                 lease_ptr = NULL;
1016                         }
1017
1018                         /*
1019                          * For a DFS path the function parse_dfs_path()
1020                          * will do the path processing.
1021                          */
1022
1023                         if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1024                                 /* convert '\\' into '/' */
1025                                 status = check_path_syntax(fname);
1026                                 if (!NT_STATUS_IS_OK(status)) {
1027                                         tevent_req_nterror(req, status);
1028                                         return tevent_req_post(req, ev);
1029                                 }
1030                         }
1031
1032                         status = filename_convert(req,
1033                                                   smb1req->conn,
1034                                                   smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1035                                                   fname,
1036                                                   ucf_flags,
1037                                                   NULL, /* ppath_contains_wcards */
1038                                                   &smb_fname);
1039                         if (!NT_STATUS_IS_OK(status)) {
1040                                 tevent_req_nterror(req, status);
1041                                 return tevent_req_post(req, ev);
1042                         }
1043
1044                         /*
1045                          * MS-SMB2: 2.2.13 SMB2 CREATE Request
1046                          * ImpersonationLevel ... MUST contain one of the
1047                          * following values. The server MUST validate this
1048                          * field, but otherwise ignore it.
1049                          *
1050                          * NB. The source4/torture/smb2/durable_open.c test
1051                          * shows this check is only done on real opens, not
1052                          * on durable handle-reopens.
1053                          */
1054
1055                         if (in_impersonation_level >
1056                                         SMB2_IMPERSONATION_DELEGATE) {
1057                                 tevent_req_nterror(req,
1058                                         NT_STATUS_BAD_IMPERSONATION_LEVEL);
1059                                 return tevent_req_post(req, ev);
1060                         }
1061
1062                         /*
1063                          * We know we're going to do a local open, so now
1064                          * we must be protocol strict. JRA.
1065                          *
1066                          * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1067                          * If the file name length is greater than zero and the
1068                          * first character is a path separator character, the
1069                          * server MUST fail the request with
1070                          * STATUS_INVALID_PARAMETER.
1071                          */
1072                         if (in_name[0] == '\\' || in_name[0] == '/') {
1073                                 tevent_req_nterror(req,
1074                                         NT_STATUS_INVALID_PARAMETER);
1075                                 return tevent_req_post(req, ev);
1076                         }
1077
1078                         status = SMB_VFS_CREATE_FILE(smb1req->conn,
1079                                                      smb1req,
1080                                                      0, /* root_dir_fid */
1081                                                      smb_fname,
1082                                                      in_desired_access,
1083                                                      in_share_access,
1084                                                      in_create_disposition,
1085                                                      in_create_options,
1086                                                      in_file_attributes,
1087                                                      map_smb2_oplock_levels_to_samba(requested_oplock_level),
1088                                                      lease_ptr,
1089                                                      allocation_size,
1090                                                      0, /* private_flags */
1091                                                      sec_desc,
1092                                                      ea_list,
1093                                                      &result,
1094                                                      &info,
1095                                                      &in_context_blobs,
1096                                                      state->out_context_blobs);
1097                         if (!NT_STATUS_IS_OK(status)) {
1098                                 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1099                                         SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1100                                         return req;
1101                                 }
1102                                 tevent_req_nterror(req, status);
1103                                 return tevent_req_post(req, ev);
1104                         }
1105                         op = result->op;
1106                 }
1107
1108                 /*
1109                  * here we have op == result->op
1110                  */
1111
1112                 DEBUG(10, ("smbd_smb2_create_send: "
1113                            "response construction phase\n"));
1114
1115                 if (mxac) {
1116                         NTTIME last_write_time;
1117
1118                         last_write_time = unix_timespec_to_nt_time(
1119                                                  result->fsp_name->st.st_ex_mtime);
1120                         if (last_write_time != max_access_time) {
1121                                 uint8_t p[8];
1122                                 uint32_t max_access_granted;
1123                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1124
1125                                 status = smbd_calculate_access_mask(smb1req->conn,
1126                                                         result->fsp_name,
1127                                                         false,
1128                                                         SEC_FLAG_MAXIMUM_ALLOWED,
1129                                                         &max_access_granted);
1130
1131                                 SIVAL(p, 0, NT_STATUS_V(status));
1132                                 SIVAL(p, 4, max_access_granted);
1133
1134                                 status = smb2_create_blob_add(
1135                                     state->out_context_blobs,
1136                                     state->out_context_blobs,
1137                                     SMB2_CREATE_TAG_MXAC,
1138                                     blob);
1139                                 if (!NT_STATUS_IS_OK(status)) {
1140                                         tevent_req_nterror(req, status);
1141                                         return tevent_req_post(req, ev);
1142                                 }
1143                         }
1144                 }
1145
1146                 if (durable_requested &&
1147                     (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1148                 {
1149                         status = SMB_VFS_DURABLE_COOKIE(result,
1150                                                 op,
1151                                                 &op->global->backend_cookie);
1152                         if (!NT_STATUS_IS_OK(status)) {
1153                                 op->global->backend_cookie = data_blob_null;
1154                         }
1155                 }
1156                 if (op->global->backend_cookie.length > 0) {
1157                         update_open = true;
1158
1159                         op->global->durable = true;
1160                         op->global->durable_timeout_msec = durable_timeout_msec;
1161                 }
1162
1163                 if (update_open) {
1164                         op->global->create_guid = _create_guid;
1165
1166                         status = smbXsrv_open_update(op);
1167                         DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1168                                    "returned %s\n",
1169                                    nt_errstr(status)));
1170                         if (!NT_STATUS_IS_OK(status)) {
1171                                 tevent_req_nterror(req, status);
1172                                 return tevent_req_post(req, ev);
1173                         }
1174                 }
1175
1176                 if (dhnq && op->global->durable) {
1177                         uint8_t p[8] = { 0, };
1178                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1179
1180                         status = smb2_create_blob_add(state->out_context_blobs,
1181                                                       state->out_context_blobs,
1182                                                       SMB2_CREATE_TAG_DHNQ,
1183                                                       blob);
1184                         if (!NT_STATUS_IS_OK(status)) {
1185                                 tevent_req_nterror(req, status);
1186                                 return tevent_req_post(req, ev);
1187                         }
1188                 }
1189
1190                 if (dh2q && op->global->durable) {
1191                         uint8_t p[8] = { 0, };
1192                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1193                         uint32_t durable_v2_response_flags = 0;
1194
1195                         SIVAL(p, 0, op->global->durable_timeout_msec);
1196                         SIVAL(p, 4, durable_v2_response_flags);
1197
1198                         status = smb2_create_blob_add(state->out_context_blobs,
1199                                                       state->out_context_blobs,
1200                                                       SMB2_CREATE_TAG_DH2Q,
1201                                                       blob);
1202                         if (!NT_STATUS_IS_OK(status)) {
1203                                 tevent_req_nterror(req, status);
1204                                 return tevent_req_post(req, ev);
1205                         }
1206                 }
1207
1208                 if (qfid) {
1209                         uint8_t p[32];
1210                         uint64_t file_index = get_FileIndex(result->conn,
1211                                                         &result->fsp_name->st);
1212                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1213
1214                         ZERO_STRUCT(p);
1215
1216                         /* From conversations with Microsoft engineers at
1217                            the MS plugfest. The first 8 bytes are the "volume index"
1218                            == inode, the second 8 bytes are the "volume id",
1219                            == dev. This will be updated in the SMB2 doc. */
1220                         SBVAL(p, 0, file_index);
1221                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1222
1223                         status = smb2_create_blob_add(state->out_context_blobs,
1224                                                       state->out_context_blobs,
1225                                                       SMB2_CREATE_TAG_QFID,
1226                                                       blob);
1227                         if (!NT_STATUS_IS_OK(status)) {
1228                                 tevent_req_nterror(req, status);
1229                                 return tevent_req_post(req, ev);
1230                         }
1231                 }
1232
1233                 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1234                         uint8_t buf[52];
1235
1236                         lease = result->lease->lease;
1237
1238                         lease_len = sizeof(buf);
1239                         if (lease.lease_version == 1) {
1240                                 lease_len = 32;
1241                         }
1242
1243                         if (!smb2_lease_push(&lease, buf, lease_len)) {
1244                                 tevent_req_nterror(
1245                                         req, NT_STATUS_INTERNAL_ERROR);
1246                                 return tevent_req_post(req, ev);
1247                         }
1248
1249                         status = smb2_create_blob_add(
1250                                 state, state->out_context_blobs,
1251                                 SMB2_CREATE_TAG_RQLS,
1252                                 data_blob_const(buf, lease_len));
1253                         if (!NT_STATUS_IS_OK(status)) {
1254                                 tevent_req_nterror(req, status);
1255                                 return tevent_req_post(req, ev);
1256                         }
1257                 }
1258         }
1259
1260         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1261
1262         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1263                 state->out_oplock_level = in_oplock_level;
1264         } else {
1265                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1266         }
1267
1268         if ((in_create_disposition == FILE_SUPERSEDE)
1269             && (info == FILE_WAS_OVERWRITTEN)) {
1270                 state->out_create_action = FILE_WAS_SUPERSEDED;
1271         } else {
1272                 state->out_create_action = info;
1273         }
1274         state->out_file_attributes = dos_mode(result->conn,
1275                                            result->fsp_name);
1276
1277         state->out_creation_ts = get_create_timespec(smb1req->conn,
1278                                         result, result->fsp_name);
1279         state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1280         state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1281         state->out_change_ts = get_change_timespec(smb1req->conn,
1282                                         result, result->fsp_name);
1283         state->out_allocation_size =
1284                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1285                                                &(result->fsp_name->st));
1286         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1287         if (state->out_file_attributes == 0) {
1288                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1289         }
1290         state->out_file_id_persistent = result->op->global->open_persistent_id;
1291         state->out_file_id_volatile = result->op->global->open_volatile_id;
1292
1293         DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1294                   fsp_str_dbg(result), fsp_fnum_dbg(result)));
1295
1296         tevent_req_done(req);
1297         return tevent_req_post(req, ev);
1298 }
1299
1300 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1301                         TALLOC_CTX *mem_ctx,
1302                         uint8_t *out_oplock_level,
1303                         uint32_t *out_create_action,
1304                         struct timespec *out_creation_ts,
1305                         struct timespec *out_last_access_ts,
1306                         struct timespec *out_last_write_ts,
1307                         struct timespec *out_change_ts,
1308                         uint64_t *out_allocation_size,
1309                         uint64_t *out_end_of_file,
1310                         uint32_t *out_file_attributes,
1311                         uint64_t *out_file_id_persistent,
1312                         uint64_t *out_file_id_volatile,
1313                         struct smb2_create_blobs *out_context_blobs)
1314 {
1315         NTSTATUS status;
1316         struct smbd_smb2_create_state *state = tevent_req_data(req,
1317                                                struct smbd_smb2_create_state);
1318
1319         if (tevent_req_is_nterror(req, &status)) {
1320                 tevent_req_received(req);
1321                 return status;
1322         }
1323
1324         *out_oplock_level       = state->out_oplock_level;
1325         *out_create_action      = state->out_create_action;
1326         *out_creation_ts        = state->out_creation_ts;
1327         *out_last_access_ts     = state->out_last_access_ts;
1328         *out_last_write_ts      = state->out_last_write_ts;
1329         *out_change_ts          = state->out_change_ts;
1330         *out_allocation_size    = state->out_allocation_size;
1331         *out_end_of_file        = state->out_end_of_file;
1332         *out_file_attributes    = state->out_file_attributes;
1333         *out_file_id_persistent = state->out_file_id_persistent;
1334         *out_file_id_volatile   = state->out_file_id_volatile;
1335         *out_context_blobs      = *(state->out_context_blobs);
1336
1337         talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1338
1339         tevent_req_received(req);
1340         return NT_STATUS_OK;
1341 }
1342
1343 /*********************************************************
1344  Code for dealing with deferred opens.
1345 *********************************************************/
1346
1347 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1348                         struct timeval *p_request_time,
1349                         struct deferred_open_record **open_rec)
1350 {
1351         struct smbd_smb2_create_state *state = NULL;
1352         struct tevent_req *req = NULL;
1353
1354         if (!smb2req) {
1355                 return false;
1356         }
1357         req = smb2req->subreq;
1358         if (!req) {
1359                 return false;
1360         }
1361         state = tevent_req_data(req, struct smbd_smb2_create_state);
1362         if (!state) {
1363                 return false;
1364         }
1365         if (!state->open_was_deferred) {
1366                 return false;
1367         }
1368         if (p_request_time) {
1369                 *p_request_time = state->request_time;
1370         }
1371         if (open_rec != NULL) {
1372                 *open_rec = state->open_rec;
1373         }
1374         return true;
1375 }
1376
1377 /*********************************************************
1378  Re-process this call early - requested by message or
1379  close.
1380 *********************************************************/
1381
1382 static struct smbd_smb2_request *find_open_smb2req(
1383         struct smbXsrv_connection *xconn, uint64_t mid)
1384 {
1385         struct smbd_smb2_request *smb2req;
1386
1387         for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1388                 uint64_t message_id;
1389                 if (smb2req->subreq == NULL) {
1390                         /* This message has been processed. */
1391                         continue;
1392                 }
1393                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1394                         /* This message has been processed. */
1395                         continue;
1396                 }
1397                 message_id = get_mid_from_smb2req(smb2req);
1398                 if (message_id == mid) {
1399                         return smb2req;
1400                 }
1401         }
1402         return NULL;
1403 }
1404
1405 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1406 {
1407         struct smbd_smb2_create_state *state = NULL;
1408         struct smbd_smb2_request *smb2req;
1409
1410         smb2req = find_open_smb2req(xconn, mid);
1411
1412         if (!smb2req) {
1413                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1414                         (unsigned long long)mid));
1415                 return false;
1416         }
1417         if (!smb2req->subreq) {
1418                 return false;
1419         }
1420         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1421                 return false;
1422         }
1423         state = tevent_req_data(smb2req->subreq,
1424                         struct smbd_smb2_create_state);
1425         if (!state) {
1426                 return false;
1427         }
1428         /* It's not in progress if there's no timeout event. */
1429         if (!state->open_was_deferred) {
1430                 return false;
1431         }
1432
1433         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1434                         (unsigned long long)mid));
1435
1436         return true;
1437 }
1438
1439 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1440                                                         uint64_t mid)
1441 {
1442         struct smbd_smb2_create_state *state = NULL;
1443
1444         if (!smb2req->subreq) {
1445                 return;
1446         }
1447         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1448                 return;
1449         }
1450         state = tevent_req_data(smb2req->subreq,
1451                         struct smbd_smb2_create_state);
1452         if (!state) {
1453                 return;
1454         }
1455
1456         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1457                 "mid %llu\n",
1458                 (unsigned long long)mid ));
1459
1460         state->open_was_deferred = false;
1461         /* Ensure we don't have any outstanding timer event. */
1462         TALLOC_FREE(state->te);
1463         /* Ensure we don't have any outstanding immediate event. */
1464         TALLOC_FREE(state->im);
1465 }
1466
1467 void remove_deferred_open_message_smb2(
1468         struct smbXsrv_connection *xconn, uint64_t mid)
1469 {
1470         struct smbd_smb2_request *smb2req;
1471
1472         smb2req = find_open_smb2req(xconn, mid);
1473
1474         if (!smb2req) {
1475                 DEBUG(10,("remove_deferred_open_message_smb2: "
1476                         "can't find mid %llu\n",
1477                         (unsigned long long)mid ));
1478                 return;
1479         }
1480         remove_deferred_open_message_smb2_internal(smb2req, mid);
1481 }
1482
1483 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1484                                         struct tevent_immediate *im,
1485                                         void *private_data)
1486 {
1487         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1488                                         struct smbd_smb2_request);
1489         uint64_t mid = get_mid_from_smb2req(smb2req);
1490         NTSTATUS status;
1491
1492         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1493                 "re-dispatching mid %llu\n",
1494                 (unsigned long long)mid ));
1495
1496         status = smbd_smb2_request_dispatch(smb2req);
1497         if (!NT_STATUS_IS_OK(status)) {
1498                 smbd_server_connection_terminate(smb2req->xconn,
1499                                                  nt_errstr(status));
1500                 return;
1501         }
1502 }
1503
1504 bool schedule_deferred_open_message_smb2(
1505         struct smbXsrv_connection *xconn, uint64_t mid)
1506 {
1507         struct smbd_smb2_create_state *state = NULL;
1508         struct smbd_smb2_request *smb2req;
1509
1510         smb2req = find_open_smb2req(xconn, mid);
1511
1512         if (!smb2req) {
1513                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1514                         "can't find mid %llu\n",
1515                         (unsigned long long)mid ));
1516                 return false;
1517         }
1518         if (!smb2req->subreq) {
1519                 return false;
1520         }
1521         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1522                 return false;
1523         }
1524         state = tevent_req_data(smb2req->subreq,
1525                         struct smbd_smb2_create_state);
1526         if (!state) {
1527                 return false;
1528         }
1529
1530         /* Ensure we don't have any outstanding timer event. */
1531         TALLOC_FREE(state->te);
1532         /* Ensure we don't have any outstanding immediate event. */
1533         TALLOC_FREE(state->im);
1534
1535         /*
1536          * This is subtle. We must null out the callback
1537          * before rescheduling, else the first call to
1538          * tevent_req_nterror() causes the _receive()
1539          * function to be called, this causing tevent_req_post()
1540          * to crash.
1541          */
1542         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1543
1544         state->im = tevent_create_immediate(smb2req);
1545         if (!state->im) {
1546                 smbd_server_connection_terminate(smb2req->xconn,
1547                         nt_errstr(NT_STATUS_NO_MEMORY));
1548                 return false;
1549         }
1550
1551         DEBUG(10,("schedule_deferred_open_message_smb2: "
1552                 "re-processing mid %llu\n",
1553                 (unsigned long long)mid ));
1554
1555         tevent_schedule_immediate(state->im,
1556                         smb2req->sconn->ev_ctx,
1557                         smbd_smb2_create_request_dispatch_immediate,
1558                         smb2req);
1559
1560         return true;
1561 }
1562
1563 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1564 {
1565         struct smbd_smb2_request *smb2req = NULL;
1566         struct smbd_smb2_create_state *state = tevent_req_data(req,
1567                                 struct smbd_smb2_create_state);
1568         uint64_t mid;
1569
1570         if (!state) {
1571                 return false;
1572         }
1573
1574         if (!state->smb2req) {
1575                 return false;
1576         }
1577
1578         smb2req = state->smb2req;
1579         mid = get_mid_from_smb2req(smb2req);
1580
1581         if (is_deferred_open_async(state->open_rec)) {
1582                 /* Can't cancel an async create. */
1583                 return false;
1584         }
1585
1586         remove_deferred_open_message_smb2_internal(smb2req, mid);
1587
1588         tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1589         tevent_req_nterror(req, NT_STATUS_CANCELLED);
1590         return true;
1591 }
1592
1593 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1594                                 struct timeval request_time,
1595                                 struct timeval timeout,
1596                                 struct file_id id,
1597                                 struct deferred_open_record *open_rec)
1598 {
1599         struct tevent_req *req = NULL;
1600         struct smbd_smb2_create_state *state = NULL;
1601         struct timeval end_time;
1602
1603         if (!smb2req) {
1604                 return false;
1605         }
1606         req = smb2req->subreq;
1607         if (!req) {
1608                 return false;
1609         }
1610         state = tevent_req_data(req, struct smbd_smb2_create_state);
1611         if (!state) {
1612                 return false;
1613         }
1614         state->id = id;
1615         state->request_time = request_time;
1616         state->open_rec = talloc_move(state, &open_rec);
1617
1618         /* Re-schedule us to retry on timer expiry. */
1619         end_time = timeval_sum(&request_time, &timeout);
1620
1621         DEBUG(10,("push_deferred_open_message_smb2: "
1622                 "timeout at %s\n",
1623                 timeval_string(talloc_tos(),
1624                                 &end_time,
1625                                 true) ));
1626
1627         state->open_was_deferred = true;
1628
1629         /* allow this request to be canceled */
1630         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1631
1632         return true;
1633 }