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         NTSTATUS status;
 383
 384         if (lease_ptr == NULL) {
 385                 if (fsp->oplock_type != LEASE_OPLOCK) {
 386                         return NT_STATUS_OK;
 387                 }
 388                 DEBUG(10, ("Reopened file has lease, but no lease "
 389                            "requested\n"));
 390                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 391         }
 392
 393         if (fsp->oplock_type != LEASE_OPLOCK) {
 394                 DEBUG(10, ("Lease requested, but reopened file has no "
 395                            "lease\n"));
 396                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 397         }
 398
 399         if (!smb2_lease_key_equal(&lease_ptr->lease_key,
 400                                   &fsp->lease->lease.lease_key)) {
 401                 DEBUG(10, ("Different lease key requested than found "
 402                            "in reopened file\n"));
 403                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 404         }
 405
 406         status = filename_convert(talloc_tos(), fsp->conn, false,
 407                                   requested_filename, UCF_PREP_CREATEFILE,
 408                                   NULL, &smb_fname);
 409         if (!NT_STATUS_IS_OK(status)) {
 410                 DEBUG(10, ("filename_convert returned %s\n",
 411                            nt_errstr(status)));
 412                 return status;
 413         }
 414
 415         if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
 416                 DEBUG(10, ("Lease requested for file %s, reopened file "
 417                            "is named %s\n", smb_fname->base_name,
 418                            fsp->fsp_name->base_name));
 419                 TALLOC_FREE(smb_fname);
 420                 return NT_STATUS_INVALID_PARAMETER;
 421         }
 422
 423         TALLOC_FREE(smb_fname);
 424
 425         return NT_STATUS_OK;
 426 }
 427
 428 struct smbd_smb2_create_state {
 429         struct smbd_smb2_request *smb2req;
 430         struct smb_request *smb1req;
 431         bool open_was_deferred;
 432         struct tevent_timer *te;
 433         struct tevent_immediate *im;
 434         struct timeval request_time;
 435         struct file_id id;
 436         struct deferred_open_record *open_rec;
 437         uint8_t out_oplock_level;
 438         uint32_t out_create_action;
 439         struct timespec out_creation_ts;
 440         struct timespec out_last_access_ts;
 441         struct timespec out_last_write_ts;
 442         struct timespec out_change_ts;
 443         uint64_t out_allocation_size;
 444         uint64_t out_end_of_file;
 445         uint32_t out_file_attributes;
 446         uint64_t out_file_id_persistent;
 447         uint64_t out_file_id_volatile;
 448         struct smb2_create_blobs *out_context_blobs;
 449 };
 450
 451 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 452                         struct tevent_context *ev,
 453                         struct smbd_smb2_request *smb2req,
 454                         uint8_t in_oplock_level,
 455                         uint32_t in_impersonation_level,
 456                         uint32_t in_desired_access,
 457                         uint32_t in_file_attributes,
 458                         uint32_t in_share_access,
 459                         uint32_t in_create_disposition,
 460                         uint32_t in_create_options,
 461                         const char *in_name,
 462                         struct smb2_create_blobs in_context_blobs)
 463 {
 464         struct tevent_req *req = NULL;
 465         struct smbd_smb2_create_state *state = NULL;
 466         NTSTATUS status;
 467         struct smb_request *smb1req = NULL;
 468         files_struct *result = NULL;
 469         int info;
 470         int requested_oplock_level;
 471         struct smb2_create_blob *dhnc = NULL;
 472         struct smb2_create_blob *dh2c = NULL;
 473         struct smb2_create_blob *dhnq = NULL;
 474         struct smb2_create_blob *dh2q = NULL;
 475         struct smb2_create_blob *rqls = NULL;
 476         struct smbXsrv_open *op = NULL;
 477
 478         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
 479                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 480         } else {
 481                 requested_oplock_level = in_oplock_level;
 482         }
 483
 484
 485         if (smb2req->subreq == NULL) {
 486                 /* New create call. */
 487                 req = tevent_req_create(mem_ctx, &state,
 488                                 struct smbd_smb2_create_state);
 489                 if (req == NULL) {
 490                         return NULL;
 491                 }
 492                 state->smb2req = smb2req;
 493
 494                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 495                 if (tevent_req_nomem(smb1req, req)) {
 496                         return tevent_req_post(req, ev);
 497                 }
 498                 state->smb1req = smb1req;
 499                 smb2req->subreq = req;
 500                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 501                         in_name));
 502         } else {
 503                 /* Re-entrant create call. */
 504                 req = smb2req->subreq;
 505                 state = tevent_req_data(req,
 506                                 struct smbd_smb2_create_state);
 507                 smb1req = state->smb1req;
 508                 TALLOC_FREE(state->out_context_blobs);
 509                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 510                         in_name ));
 511         }
 512
 513         state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
 514         if (tevent_req_nomem(state->out_context_blobs, req)) {
 515                 return tevent_req_post(req, ev);
 516         }
 517
 518         dhnq = smb2_create_blob_find(&in_context_blobs,
 519                                      SMB2_CREATE_TAG_DHNQ);
 520         dhnc = smb2_create_blob_find(&in_context_blobs,
 521                                      SMB2_CREATE_TAG_DHNC);
 522         dh2q = smb2_create_blob_find(&in_context_blobs,
 523                                      SMB2_CREATE_TAG_DH2Q);
 524         dh2c = smb2_create_blob_find(&in_context_blobs,
 525                                      SMB2_CREATE_TAG_DH2C);
 526         if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
 527                 rqls = smb2_create_blob_find(&in_context_blobs,
 528                                              SMB2_CREATE_TAG_RQLS);
 529         }
 530
 531         if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
 532             (dh2q && dh2c))
 533         {
 534                 /* not both are allowed at the same time */
 535                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 536                 return tevent_req_post(req, ev);
 537         }
 538
 539         if (dhnc) {
 540                 uint32_t num_blobs_allowed;
 541
 542                 if (dhnc->data.length != 16) {
 543                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 544                         return tevent_req_post(req, ev);
 545                 }
 546
 547                 /*
 548                  * According to MS-SMB2: 3.3.5.9.7, "Handling the
 549                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
 550                  * we should ignore an additional dhnq blob, but fail
 551                  * the request (with status OBJECT_NAME_NOT_FOUND) if
 552                  * any other extra create blob has been provided.
 553                  *
 554                  * (Note that the cases of an additional dh2q or dh2c blob
 555                  *  which require a different error code, have been treated
 556                  *  above.)
 557                  *
 558                  * TODO:
 559                  * This is only true for the oplock case:
 560                  * For leases, lease request is required additionally.
 561                  */
 562
 563                 if (dhnq) {
 564                         num_blobs_allowed = 2;
 565                 } else {
 566                         num_blobs_allowed = 1;
 567                 }
 568
 569                 if (rqls != NULL) {
 570                         num_blobs_allowed += 1;
 571                 }
 572
 573                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 574                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 575                         return tevent_req_post(req, ev);
 576                 }
 577         }
 578
 579         if (dh2c) {
 580                 uint32_t num_blobs_allowed;
 581
 582                 if (dh2c->data.length != 36) {
 583                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 584                         return tevent_req_post(req, ev);
 585                 }
 586
 587                 /*
 588                  * According to MS-SMB2: 3.3.5.9.12, "Handling the
 589                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
 590                  * we should fail the request with status
 591                  * OBJECT_NAME_NOT_FOUND if any other create blob has been
 592                  * provided.
 593                  *
 594                  * (Note that the cases of an additional dhnq, dhnc or dh2q
 595                  *  blob which require a different error code, have been
 596                  *  treated above.)
 597                  *
 598                  * TODO:
 599                  * This is only true for the oplock case:
 600                  * For leases, lease request is required additionally!
 601                  */
 602
 603                 num_blobs_allowed = 1;
 604
 605                 if (rqls != NULL) {
 606                         num_blobs_allowed += 1;
 607                 }
 608
 609                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 610                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 611                         return tevent_req_post(req, ev);
 612                 }
 613         }
 614
 615         if (IS_IPC(smb1req->conn)) {
 616                 const char *pipe_name = in_name;
 617
 618                 if (dhnc || dh2c) {
 619                         /* durable handles are not supported on IPC$ */
 620                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 621                         return tevent_req_post(req, ev);
 622                 }
 623
 624                 if (!lp_nt_pipe_support()) {
 625                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 626                         return tevent_req_post(req, ev);
 627                 }
 628
 629                 status = open_np_file(smb1req, pipe_name, &result);
 630                 if (!NT_STATUS_IS_OK(status)) {
 631                         tevent_req_nterror(req, status);
 632                         return tevent_req_post(req, ev);
 633                 }
 634                 info = FILE_WAS_OPENED;
 635         } else if (CAN_PRINT(smb1req->conn)) {
 636                 if (dhnc || dh2c) {
 637                         /* durable handles are not supported on printers */
 638                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 639                         return tevent_req_post(req, ev);
 640                 }
 641
 642                 status = file_new(smb1req, smb1req->conn, &result);
 643                 if(!NT_STATUS_IS_OK(status)) {
 644                         tevent_req_nterror(req, status);
 645                         return tevent_req_post(req, ev);
 646                 }
 647
 648                 status = print_spool_open(result, in_name,
 649                                           smb1req->vuid);
 650                 if (!NT_STATUS_IS_OK(status)) {
 651                         file_free(smb1req, result);
 652                         tevent_req_nterror(req, status);
 653                         return tevent_req_post(req, ev);
 654                 }
 655                 info = FILE_WAS_CREATED;
 656         } else {
 657                 char *fname;
 658                 struct smb2_create_blob *exta = NULL;
 659                 struct ea_list *ea_list = NULL;
 660                 struct smb2_create_blob *mxac = NULL;
 661                 NTTIME max_access_time = 0;
 662                 struct smb2_create_blob *secd = NULL;
 663                 struct security_descriptor *sec_desc = NULL;
 664                 struct smb2_create_blob *alsi = NULL;
 665                 uint64_t allocation_size = 0;
 666                 struct smb2_create_blob *twrp = NULL;
 667                 struct smb2_create_blob *qfid = NULL;
 668                 struct GUID _create_guid = GUID_zero();
 669                 struct GUID *create_guid = NULL;
 670                 bool update_open = false;
 671                 bool durable_requested = false;
 672                 uint32_t durable_timeout_msec = 0;
 673                 bool do_durable_reconnect = false;
 674                 uint64_t persistent_id = 0;
 675                 struct smb2_lease lease;
 676                 struct smb2_lease *lease_ptr = NULL;
 677                 ssize_t lease_len = -1;
 678                 struct smb2_create_blob *svhdx = NULL;
 679
 680                 exta = smb2_create_blob_find(&in_context_blobs,
 681                                              SMB2_CREATE_TAG_EXTA);
 682                 mxac = smb2_create_blob_find(&in_context_blobs,
 683                                              SMB2_CREATE_TAG_MXAC);
 684                 secd = smb2_create_blob_find(&in_context_blobs,
 685                                              SMB2_CREATE_TAG_SECD);
 686                 alsi = smb2_create_blob_find(&in_context_blobs,
 687                                              SMB2_CREATE_TAG_ALSI);
 688                 twrp = smb2_create_blob_find(&in_context_blobs,
 689                                              SMB2_CREATE_TAG_TWRP);
 690                 qfid = smb2_create_blob_find(&in_context_blobs,
 691                                              SMB2_CREATE_TAG_QFID);
 692                 if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
 693                         /*
 694                          * This was introduced with SMB3_02
 695                          */
 696                         svhdx = smb2_create_blob_find(&in_context_blobs,
 697                                                       SVHDX_OPEN_DEVICE_CONTEXT);
 698                 }
 699
 700                 fname = talloc_strdup(state, in_name);
 701                 if (tevent_req_nomem(fname, req)) {
 702                         return tevent_req_post(req, ev);
 703                 }
 704
 705                 if (exta) {
 706                         if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
 707                                 tevent_req_nterror(req,
 708                                         NT_STATUS_EAS_NOT_SUPPORTED);
 709                                 return tevent_req_post(req, ev);
 710                         }
 711
 712                         ea_list = read_nttrans_ea_list(mem_ctx,
 713                                 (const char *)exta->data.data, exta->data.length);
 714                         if (!ea_list) {
 715                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 716                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 717                                 return tevent_req_post(req, ev);
 718                         }
 719
 720                         if (ea_list_has_invalid_name(ea_list)) {
 721                                 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
 722                                 return tevent_req_post(req, ev);
 723                         }
 724                 }
 725
 726                 if (mxac) {
 727                         if (mxac->data.length == 0) {
 728                                 max_access_time = 0;
 729                         } else if (mxac->data.length == 8) {
 730                                 max_access_time = BVAL(mxac->data.data, 0);
 731                         } else {
 732                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 733                                 return tevent_req_post(req, ev);
 734                         }
 735                 }
 736
 737                 if (secd) {
 738                         enum ndr_err_code ndr_err;
 739
 740                         sec_desc = talloc_zero(state, struct security_descriptor);
 741                         if (tevent_req_nomem(sec_desc, req)) {
 742                                 return tevent_req_post(req, ev);
 743                         }
 744
 745                         ndr_err = ndr_pull_struct_blob(&secd->data,
 746                                 sec_desc, sec_desc,
 747                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 748                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 749                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 750                                          ndr_errstr(ndr_err)));
 751                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 752                                 return tevent_req_post(req, ev);
 753                         }
 754                 }
 755
 756                 if (dhnq) {
 757                         if (dhnq->data.length != 16) {
 758                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 759                                 return tevent_req_post(req, ev);
 760                         }
 761
 762                         if (dh2q) {
 763                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 764                                 return tevent_req_post(req, ev);
 765                         }
 766
 767                         /*
 768                          * durable handle request is processed below.
 769                          */
 770                         durable_requested = true;
 771                         /*
 772                          * Set the timeout to 16 mins.
 773                          *
 774                          * TODO: test this against Windows 2012
 775                          *       as the default for durable v2 is 1 min.
 776                          */
 777                         durable_timeout_msec = (16*60*1000);
 778                 }
 779
 780                 if (dh2q) {
 781                         const uint8_t *p = dh2q->data.data;
 782                         uint32_t durable_v2_timeout = 0;
 783                         DATA_BLOB create_guid_blob;
 784
 785                         if (dh2q->data.length != 32) {
 786                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 787                                 return tevent_req_post(req, ev);
 788                         }
 789
 790                         if (dhnq) {
 791                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 792                                 return tevent_req_post(req, ev);
 793                         }
 794
 795                         durable_v2_timeout = IVAL(p, 0);
 796                         create_guid_blob = data_blob_const(p + 16, 16);
 797
 798                         status = GUID_from_ndr_blob(&create_guid_blob,
 799                                                     &_create_guid);
 800                         if (tevent_req_nterror(req, status)) {
 801                                 return tevent_req_post(req, ev);
 802                         }
 803                         create_guid = &_create_guid;
 804                         /*
 805                          * we need to store the create_guid later
 806                          */
 807                         update_open = true;
 808
 809                         /*
 810                          * durable handle v2 request processed below
 811                          */
 812                         durable_requested = true;
 813                         durable_timeout_msec = durable_v2_timeout;
 814                         if (durable_timeout_msec == 0) {
 815                                 /*
 816                                  * Set the timeout to 1 min as default.
 817                                  *
 818                                  * This matches Windows 2012.
 819                                  */
 820                                 durable_timeout_msec = (60*1000);
 821                         }
 822                 }
 823
 824                 if (dhnc) {
 825                         persistent_id = BVAL(dhnc->data.data, 0);
 826
 827                         do_durable_reconnect = true;
 828                 }
 829
 830                 if (dh2c) {
 831                         const uint8_t *p = dh2c->data.data;
 832                         DATA_BLOB create_guid_blob;
 833
 834                         persistent_id = BVAL(p, 0);
 835                         create_guid_blob = data_blob_const(p + 16, 16);
 836
 837                         status = GUID_from_ndr_blob(&create_guid_blob,
 838                                                     &_create_guid);
 839                         if (tevent_req_nterror(req, status)) {
 840                                 return tevent_req_post(req, ev);
 841                         }
 842                         create_guid = &_create_guid;
 843
 844                         do_durable_reconnect = true;
 845                 }
 846
 847                 if (alsi) {
 848                         if (alsi->data.length != 8) {
 849                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 850                                 return tevent_req_post(req, ev);
 851                         }
 852                         allocation_size = BVAL(alsi->data.data, 0);
 853                 }
 854
 855                 if (twrp) {
 856                         NTTIME nttime;
 857                         time_t t;
 858                         struct tm *tm;
 859
 860                         if (twrp->data.length != 8) {
 861                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 862                                 return tevent_req_post(req, ev);
 863                         }
 864
 865                         nttime = BVAL(twrp->data.data, 0);
 866                         t = nt_time_to_unix(nttime);
 867                         tm = gmtime(&t);
 868
 869                         TALLOC_FREE(fname);
 870                         fname = talloc_asprintf(state,
 871                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 872                                         tm->tm_year + 1900,
 873                                         tm->tm_mon + 1,
 874                                         tm->tm_mday,
 875                                         tm->tm_hour,
 876                                         tm->tm_min,
 877                                         tm->tm_sec,
 878                                         in_name);
 879                         if (tevent_req_nomem(fname, req)) {
 880                                 return tevent_req_post(req, ev);
 881                         }
 882                 }
 883
 884                 if (qfid) {
 885                         if (qfid->data.length != 0) {
 886                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 887                                 return tevent_req_post(req, ev);
 888                         }
 889                 }
 890
 891                 if (rqls) {
 892                         lease_len = smb2_lease_pull(
 893                                 rqls->data.data, rqls->data.length, &lease);
 894                         if (lease_len == -1) {
 895                                 tevent_req_nterror(
 896                                         req, NT_STATUS_INVALID_PARAMETER);
 897                                 return tevent_req_post(req, ev);
 898                         }
 899                         lease_ptr = &lease;
 900
 901                         if (DEBUGLEVEL >= 10) {
 902                                 DEBUG(10, ("Got lease request size %d\n",
 903                                            (int)lease_len));
 904                                 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
 905                         }
 906
 907                         if (!smb2_lease_key_valid(&lease.lease_key)) {
 908                                 lease_ptr = NULL;
 909                                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 910                         }
 911
 912                         if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
 913                             (lease.lease_version != 1)) {
 914                                 DEBUG(10, ("v2 lease key only for SMB3\n"));
 915                                 lease_ptr = NULL;
 916                         }
 917                 }
 918
 919                 if (svhdx != NULL) {
 920                         /* SharedVHD is not yet supported */
 921                         tevent_req_nterror(
 922                                 req, NT_STATUS_INVALID_DEVICE_REQUEST);
 923                         return tevent_req_post(req, ev);
 924                 }
 925
 926                 /* these are ignored for SMB2 */
 927                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 928                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 929
 930                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 931
 932                 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
 933
 934                 /*
 935                  * For the backend file open procedure, there are
 936                  * two possible modes: durable_reconnect or not.
 937                  */
 938                 if (do_durable_reconnect) {
 939                         DATA_BLOB new_cookie = data_blob_null;
 940                         NTTIME now = timeval_to_nttime(&smb2req->request_time);
 941
 942                         status = smb2srv_open_recreate(smb2req->xconn,
 943                                                 smb1req->conn->session_info,
 944                                                 persistent_id, create_guid,
 945                                                 now, &op);
 946                         if (!NT_STATUS_IS_OK(status)) {
 947                                 DEBUG(3, ("smbd_smb2_create_send: "
 948                                           "smb2srv_open_recreate failed: %s\n",
 949                                           nt_errstr(status)));
 950                                 tevent_req_nterror(req, status);
 951                                 return tevent_req_post(req, ev);
 952                         }
 953
 954                         DEBUG(10, ("smb2_create_send: %s to recreate the "
 955                                    "smb2srv_open struct for a durable handle.\n",
 956                                    op->global->durable ? "succeded" : "failed"));
 957
 958                         if (!op->global->durable) {
 959                                 talloc_free(op);
 960                                 tevent_req_nterror(req,
 961                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 962                                 return tevent_req_post(req, ev);
 963                         }
 964
 965                         status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
 966                                                 smb1req,
 967                                                 op, /* smbXsrv_open input */
 968                                                 op->global->backend_cookie,
 969                                                 op, /* TALLOC_CTX */
 970                                                 &result, &new_cookie);
 971                         if (!NT_STATUS_IS_OK(status)) {
 972                                 NTSTATUS return_status;
 973
 974                                 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 975
 976                                 DEBUG(3, ("smbd_smb2_create_send: "
 977                                           "durable_reconnect failed: %s => %s\n",
 978                                           nt_errstr(status),
 979                                           nt_errstr(return_status)));
 980
 981                                 tevent_req_nterror(req, return_status);
 982                                 return tevent_req_post(req, ev);
 983                         }
 984
 985                         DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
 986                                    (unsigned)result->oplock_type, lease_ptr));
 987
 988                         status = smbd_smb2_create_durable_lease_check(
 989                                 fname, result, lease_ptr);
 990                         if (!NT_STATUS_IS_OK(status)) {
 991                                 close_file(smb1req, result, SHUTDOWN_CLOSE);
 992                                 tevent_req_nterror(req, status);
 993                                 return tevent_req_post(req, ev);
 994                         }
 995
 996                         data_blob_free(&op->global->backend_cookie);
 997                         op->global->backend_cookie = new_cookie;
 998
 999                         op->status = NT_STATUS_OK;
1000                         op->global->disconnect_time = 0;
1001
1002                         /* save the timout for later update */
1003                         durable_timeout_msec = op->global->durable_timeout_msec;
1004
1005                         update_open = true;
1006
1007                         info = FILE_WAS_OPENED;
1008                 } else {
1009                         struct smb_filename *smb_fname = NULL;
1010
1011                         if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1012                                 if (lease_ptr == NULL) {
1013                                         requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1014                                 }
1015                         } else {
1016                                 lease_ptr = NULL;
1017                         }
1018
1019                         /*
1020                          * For a DFS path the function parse_dfs_path()
1021                          * will do the path processing.
1022                          */
1023
1024                         if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1025                                 /* convert '\\' into '/' */
1026                                 status = check_path_syntax(fname);
1027                                 if (!NT_STATUS_IS_OK(status)) {
1028                                         tevent_req_nterror(req, status);
1029                                         return tevent_req_post(req, ev);
1030                                 }
1031                         }
1032
1033                         status = filename_convert(req,
1034                                                   smb1req->conn,
1035                                                   smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1036                                                   fname,
1037                                                   UCF_PREP_CREATEFILE,
1038                                                   NULL, /* ppath_contains_wcards */
1039                                                   &smb_fname);
1040                         if (!NT_STATUS_IS_OK(status)) {
1041                                 tevent_req_nterror(req, status);
1042                                 return tevent_req_post(req, ev);
1043                         }
1044
1045                         /*
1046                          * MS-SMB2: 2.2.13 SMB2 CREATE Request
1047                          * ImpersonationLevel ... MUST contain one of the
1048                          * following values. The server MUST validate this
1049                          * field, but otherwise ignore it.
1050                          *
1051                          * NB. The source4/torture/smb2/durable_open.c test
1052                          * shows this check is only done on real opens, not
1053                          * on durable handle-reopens.
1054                          */
1055
1056                         if (in_impersonation_level >
1057                                         SMB2_IMPERSONATION_DELEGATE) {
1058                                 tevent_req_nterror(req,
1059                                         NT_STATUS_BAD_IMPERSONATION_LEVEL);
1060                                 return tevent_req_post(req, ev);
1061                         }
1062
1063                         /*
1064                          * We know we're going to do a local open, so now
1065                          * we must be protocol strict. JRA.
1066                          *
1067                          * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1068                          * If the file name length is greater than zero and the
1069                          * first character is a path separator character, the
1070                          * server MUST fail the request with
1071                          * STATUS_INVALID_PARAMETER.
1072                          */
1073                         if (in_name[0] == '\\' || in_name[0] == '/') {
1074                                 tevent_req_nterror(req,
1075                                         NT_STATUS_INVALID_PARAMETER);
1076                                 return tevent_req_post(req, ev);
1077                         }
1078
1079                         status = SMB_VFS_CREATE_FILE(smb1req->conn,
1080                                                      smb1req,
1081                                                      0, /* root_dir_fid */
1082                                                      smb_fname,
1083                                                      in_desired_access,
1084                                                      in_share_access,
1085                                                      in_create_disposition,
1086                                                      in_create_options,
1087                                                      in_file_attributes,
1088                                                      map_smb2_oplock_levels_to_samba(requested_oplock_level),
1089                                                      lease_ptr,
1090                                                      allocation_size,
1091                                                      0, /* private_flags */
1092                                                      sec_desc,
1093                                                      ea_list,
1094                                                      &result,
1095                                                      &info,
1096                                                      &in_context_blobs,
1097                                                      state->out_context_blobs);
1098                         if (!NT_STATUS_IS_OK(status)) {
1099                                 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1100                                         SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1101                                         return req;
1102                                 }
1103                                 tevent_req_nterror(req, status);
1104                                 return tevent_req_post(req, ev);
1105                         }
1106                         op = result->op;
1107                 }
1108
1109                 /*
1110                  * here we have op == result->op
1111                  */
1112
1113                 DEBUG(10, ("smbd_smb2_create_send: "
1114                            "response construction phase\n"));
1115
1116                 if (mxac) {
1117                         NTTIME last_write_time;
1118
1119                         last_write_time = unix_timespec_to_nt_time(
1120                                                  result->fsp_name->st.st_ex_mtime);
1121                         if (last_write_time != max_access_time) {
1122                                 uint8_t p[8];
1123                                 uint32_t max_access_granted;
1124                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1125
1126                                 status = smbd_calculate_access_mask(smb1req->conn,
1127                                                         result->fsp_name,
1128                                                         false,
1129                                                         SEC_FLAG_MAXIMUM_ALLOWED,
1130                                                         &max_access_granted);
1131
1132                                 SIVAL(p, 0, NT_STATUS_V(status));
1133                                 SIVAL(p, 4, max_access_granted);
1134
1135                                 status = smb2_create_blob_add(
1136                                     state->out_context_blobs,
1137                                     state->out_context_blobs,
1138                                     SMB2_CREATE_TAG_MXAC,
1139                                     blob);
1140                                 if (!NT_STATUS_IS_OK(status)) {
1141                                         tevent_req_nterror(req, status);
1142                                         return tevent_req_post(req, ev);
1143                                 }
1144                         }
1145                 }
1146
1147                 if (durable_requested &&
1148                     (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1149                 {
1150                         status = SMB_VFS_DURABLE_COOKIE(result,
1151                                                 op,
1152                                                 &op->global->backend_cookie);
1153                         if (!NT_STATUS_IS_OK(status)) {
1154                                 op->global->backend_cookie = data_blob_null;
1155                         }
1156                 }
1157                 if (op->global->backend_cookie.length > 0) {
1158                         update_open = true;
1159
1160                         op->global->durable = true;
1161                         op->global->durable_timeout_msec = durable_timeout_msec;
1162                 }
1163
1164                 if (update_open) {
1165                         op->global->create_guid = _create_guid;
1166
1167                         status = smbXsrv_open_update(op);
1168                         DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1169                                    "returned %s\n",
1170                                    nt_errstr(status)));
1171                         if (!NT_STATUS_IS_OK(status)) {
1172                                 tevent_req_nterror(req, status);
1173                                 return tevent_req_post(req, ev);
1174                         }
1175                 }
1176
1177                 if (dhnq && op->global->durable) {
1178                         uint8_t p[8] = { 0, };
1179                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1180
1181                         status = smb2_create_blob_add(state->out_context_blobs,
1182                                                       state->out_context_blobs,
1183                                                       SMB2_CREATE_TAG_DHNQ,
1184                                                       blob);
1185                         if (!NT_STATUS_IS_OK(status)) {
1186                                 tevent_req_nterror(req, status);
1187                                 return tevent_req_post(req, ev);
1188                         }
1189                 }
1190
1191                 if (dh2q && op->global->durable) {
1192                         uint8_t p[8] = { 0, };
1193                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1194                         uint32_t durable_v2_response_flags = 0;
1195
1196                         SIVAL(p, 0, op->global->durable_timeout_msec);
1197                         SIVAL(p, 4, durable_v2_response_flags);
1198
1199                         status = smb2_create_blob_add(state->out_context_blobs,
1200                                                       state->out_context_blobs,
1201                                                       SMB2_CREATE_TAG_DH2Q,
1202                                                       blob);
1203                         if (!NT_STATUS_IS_OK(status)) {
1204                                 tevent_req_nterror(req, status);
1205                                 return tevent_req_post(req, ev);
1206                         }
1207                 }
1208
1209                 if (qfid) {
1210                         uint8_t p[32];
1211                         uint64_t file_index = get_FileIndex(result->conn,
1212                                                         &result->fsp_name->st);
1213                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1214
1215                         ZERO_STRUCT(p);
1216
1217                         /* From conversations with Microsoft engineers at
1218                            the MS plugfest. The first 8 bytes are the "volume index"
1219                            == inode, the second 8 bytes are the "volume id",
1220                            == dev. This will be updated in the SMB2 doc. */
1221                         SBVAL(p, 0, file_index);
1222                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1223
1224                         status = smb2_create_blob_add(state->out_context_blobs,
1225                                                       state->out_context_blobs,
1226                                                       SMB2_CREATE_TAG_QFID,
1227                                                       blob);
1228                         if (!NT_STATUS_IS_OK(status)) {
1229                                 tevent_req_nterror(req, status);
1230                                 return tevent_req_post(req, ev);
1231                         }
1232                 }
1233
1234                 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1235                         uint8_t buf[52];
1236
1237                         lease = result->lease->lease;
1238
1239                         lease_len = sizeof(buf);
1240                         if (lease.lease_version == 1) {
1241                                 lease_len = 32;
1242                         }
1243
1244                         if (!smb2_lease_push(&lease, buf, lease_len)) {
1245                                 tevent_req_nterror(
1246                                         req, NT_STATUS_INTERNAL_ERROR);
1247                                 return tevent_req_post(req, ev);
1248                         }
1249
1250                         status = smb2_create_blob_add(
1251                                 state, state->out_context_blobs,
1252                                 SMB2_CREATE_TAG_RQLS,
1253                                 data_blob_const(buf, lease_len));
1254                         if (!NT_STATUS_IS_OK(status)) {
1255                                 tevent_req_nterror(req, status);
1256                                 return tevent_req_post(req, ev);
1257                         }
1258                 }
1259         }
1260
1261         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1262
1263         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1264                 state->out_oplock_level = in_oplock_level;
1265         } else {
1266                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1267         }
1268
1269         if ((in_create_disposition == FILE_SUPERSEDE)
1270             && (info == FILE_WAS_OVERWRITTEN)) {
1271                 state->out_create_action = FILE_WAS_SUPERSEDED;
1272         } else {
1273                 state->out_create_action = info;
1274         }
1275         state->out_file_attributes = dos_mode(result->conn,
1276                                            result->fsp_name);
1277
1278         state->out_creation_ts = get_create_timespec(smb1req->conn,
1279                                         result, result->fsp_name);
1280         state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1281         state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1282         state->out_change_ts = get_change_timespec(smb1req->conn,
1283                                         result, result->fsp_name);
1284
1285         if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1286                 dos_filetime_timespec(&state->out_creation_ts);
1287                 dos_filetime_timespec(&state->out_last_access_ts);
1288                 dos_filetime_timespec(&state->out_last_write_ts);
1289                 dos_filetime_timespec(&state->out_change_ts);
1290         }
1291
1292         state->out_allocation_size =
1293                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1294                                                &(result->fsp_name->st));
1295         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1296         if (state->out_file_attributes == 0) {
1297                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1298         }
1299         state->out_file_id_persistent = result->op->global->open_persistent_id;
1300         state->out_file_id_volatile = result->op->global->open_volatile_id;
1301
1302         DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1303                   fsp_str_dbg(result), fsp_fnum_dbg(result)));
1304
1305         tevent_req_done(req);
1306         return tevent_req_post(req, ev);
1307 }
1308
1309 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1310                         TALLOC_CTX *mem_ctx,
1311                         uint8_t *out_oplock_level,
1312                         uint32_t *out_create_action,
1313                         struct timespec *out_creation_ts,
1314                         struct timespec *out_last_access_ts,
1315                         struct timespec *out_last_write_ts,
1316                         struct timespec *out_change_ts,
1317                         uint64_t *out_allocation_size,
1318                         uint64_t *out_end_of_file,
1319                         uint32_t *out_file_attributes,
1320                         uint64_t *out_file_id_persistent,
1321                         uint64_t *out_file_id_volatile,
1322                         struct smb2_create_blobs *out_context_blobs)
1323 {
1324         NTSTATUS status;
1325         struct smbd_smb2_create_state *state = tevent_req_data(req,
1326                                                struct smbd_smb2_create_state);
1327
1328         if (tevent_req_is_nterror(req, &status)) {
1329                 tevent_req_received(req);
1330                 return status;
1331         }
1332
1333         *out_oplock_level       = state->out_oplock_level;
1334         *out_create_action      = state->out_create_action;
1335         *out_creation_ts        = state->out_creation_ts;
1336         *out_last_access_ts     = state->out_last_access_ts;
1337         *out_last_write_ts      = state->out_last_write_ts;
1338         *out_change_ts          = state->out_change_ts;
1339         *out_allocation_size    = state->out_allocation_size;
1340         *out_end_of_file        = state->out_end_of_file;
1341         *out_file_attributes    = state->out_file_attributes;
1342         *out_file_id_persistent = state->out_file_id_persistent;
1343         *out_file_id_volatile   = state->out_file_id_volatile;
1344         *out_context_blobs      = *(state->out_context_blobs);
1345
1346         talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1347
1348         tevent_req_received(req);
1349         return NT_STATUS_OK;
1350 }
1351
1352 /*********************************************************
1353  Code for dealing with deferred opens.
1354 *********************************************************/
1355
1356 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1357                         struct timeval *p_request_time,
1358                         struct deferred_open_record **open_rec)
1359 {
1360         struct smbd_smb2_create_state *state = NULL;
1361         struct tevent_req *req = NULL;
1362
1363         if (!smb2req) {
1364                 return false;
1365         }
1366         req = smb2req->subreq;
1367         if (!req) {
1368                 return false;
1369         }
1370         state = tevent_req_data(req, struct smbd_smb2_create_state);
1371         if (!state) {
1372                 return false;
1373         }
1374         if (!state->open_was_deferred) {
1375                 return false;
1376         }
1377         if (p_request_time) {
1378                 *p_request_time = state->request_time;
1379         }
1380         if (open_rec != NULL) {
1381                 *open_rec = state->open_rec;
1382         }
1383         return true;
1384 }
1385
1386 /*********************************************************
1387  Re-process this call early - requested by message or
1388  close.
1389 *********************************************************/
1390
1391 static struct smbd_smb2_request *find_open_smb2req(
1392         struct smbXsrv_connection *xconn, uint64_t mid)
1393 {
1394         struct smbd_smb2_request *smb2req;
1395
1396         for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1397                 uint64_t message_id;
1398                 if (smb2req->subreq == NULL) {
1399                         /* This message has been processed. */
1400                         continue;
1401                 }
1402                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1403                         /* This message has been processed. */
1404                         continue;
1405                 }
1406                 message_id = get_mid_from_smb2req(smb2req);
1407                 if (message_id == mid) {
1408                         return smb2req;
1409                 }
1410         }
1411         return NULL;
1412 }
1413
1414 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1415 {
1416         struct smbd_smb2_create_state *state = NULL;
1417         struct smbd_smb2_request *smb2req;
1418
1419         smb2req = find_open_smb2req(xconn, mid);
1420
1421         if (!smb2req) {
1422                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1423                         (unsigned long long)mid));
1424                 return false;
1425         }
1426         if (!smb2req->subreq) {
1427                 return false;
1428         }
1429         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1430                 return false;
1431         }
1432         state = tevent_req_data(smb2req->subreq,
1433                         struct smbd_smb2_create_state);
1434         if (!state) {
1435                 return false;
1436         }
1437         /* It's not in progress if there's no timeout event. */
1438         if (!state->open_was_deferred) {
1439                 return false;
1440         }
1441
1442         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1443                         (unsigned long long)mid));
1444
1445         return true;
1446 }
1447
1448 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1449                                                         uint64_t mid)
1450 {
1451         struct smbd_smb2_create_state *state = NULL;
1452
1453         if (!smb2req->subreq) {
1454                 return;
1455         }
1456         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1457                 return;
1458         }
1459         state = tevent_req_data(smb2req->subreq,
1460                         struct smbd_smb2_create_state);
1461         if (!state) {
1462                 return;
1463         }
1464
1465         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1466                 "mid %llu\n",
1467                 (unsigned long long)mid ));
1468
1469         state->open_was_deferred = false;
1470         /* Ensure we don't have any outstanding timer event. */
1471         TALLOC_FREE(state->te);
1472         /* Ensure we don't have any outstanding immediate event. */
1473         TALLOC_FREE(state->im);
1474 }
1475
1476 void remove_deferred_open_message_smb2(
1477         struct smbXsrv_connection *xconn, uint64_t mid)
1478 {
1479         struct smbd_smb2_request *smb2req;
1480
1481         smb2req = find_open_smb2req(xconn, mid);
1482
1483         if (!smb2req) {
1484                 DEBUG(10,("remove_deferred_open_message_smb2: "
1485                         "can't find mid %llu\n",
1486                         (unsigned long long)mid ));
1487                 return;
1488         }
1489         remove_deferred_open_message_smb2_internal(smb2req, mid);
1490 }
1491
1492 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1493                                         struct tevent_immediate *im,
1494                                         void *private_data)
1495 {
1496         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1497                                         struct smbd_smb2_request);
1498         uint64_t mid = get_mid_from_smb2req(smb2req);
1499         NTSTATUS status;
1500
1501         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1502                 "re-dispatching mid %llu\n",
1503                 (unsigned long long)mid ));
1504
1505         status = smbd_smb2_request_dispatch(smb2req);
1506         if (!NT_STATUS_IS_OK(status)) {
1507                 smbd_server_connection_terminate(smb2req->xconn,
1508                                                  nt_errstr(status));
1509                 return;
1510         }
1511 }
1512
1513 bool schedule_deferred_open_message_smb2(
1514         struct smbXsrv_connection *xconn, uint64_t mid)
1515 {
1516         struct smbd_smb2_create_state *state = NULL;
1517         struct smbd_smb2_request *smb2req;
1518
1519         smb2req = find_open_smb2req(xconn, mid);
1520
1521         if (!smb2req) {
1522                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1523                         "can't find mid %llu\n",
1524                         (unsigned long long)mid ));
1525                 return false;
1526         }
1527         if (!smb2req->subreq) {
1528                 return false;
1529         }
1530         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1531                 return false;
1532         }
1533         state = tevent_req_data(smb2req->subreq,
1534                         struct smbd_smb2_create_state);
1535         if (!state) {
1536                 return false;
1537         }
1538
1539         /* Ensure we don't have any outstanding timer event. */
1540         TALLOC_FREE(state->te);
1541         /* Ensure we don't have any outstanding immediate event. */
1542         TALLOC_FREE(state->im);
1543
1544         /*
1545          * This is subtle. We must null out the callback
1546          * before rescheduling, else the first call to
1547          * tevent_req_nterror() causes the _receive()
1548          * function to be called, this causing tevent_req_post()
1549          * to crash.
1550          */
1551         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1552
1553         state->im = tevent_create_immediate(smb2req);
1554         if (!state->im) {
1555                 smbd_server_connection_terminate(smb2req->xconn,
1556                         nt_errstr(NT_STATUS_NO_MEMORY));
1557                 return false;
1558         }
1559
1560         DEBUG(10,("schedule_deferred_open_message_smb2: "
1561                 "re-processing mid %llu\n",
1562                 (unsigned long long)mid ));
1563
1564         tevent_schedule_immediate(state->im,
1565                         smb2req->sconn->ev_ctx,
1566                         smbd_smb2_create_request_dispatch_immediate,
1567                         smb2req);
1568
1569         return true;
1570 }
1571
1572 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1573 {
1574         struct smbd_smb2_request *smb2req = NULL;
1575         struct smbd_smb2_create_state *state = tevent_req_data(req,
1576                                 struct smbd_smb2_create_state);
1577         uint64_t mid;
1578
1579         if (!state) {
1580                 return false;
1581         }
1582
1583         if (!state->smb2req) {
1584                 return false;
1585         }
1586
1587         smb2req = state->smb2req;
1588         mid = get_mid_from_smb2req(smb2req);
1589
1590         if (is_deferred_open_async(state->open_rec)) {
1591                 /* Can't cancel an async create. */
1592                 return false;
1593         }
1594
1595         remove_deferred_open_message_smb2_internal(smb2req, mid);
1596
1597         tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1598         tevent_req_nterror(req, NT_STATUS_CANCELLED);
1599         return true;
1600 }
1601
1602 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1603                                 struct timeval request_time,
1604                                 struct timeval timeout,
1605                                 struct file_id id,
1606                                 struct deferred_open_record *open_rec)
1607 {
1608         struct tevent_req *req = NULL;
1609         struct smbd_smb2_create_state *state = NULL;
1610         struct timeval end_time;
1611
1612         if (!smb2req) {
1613                 return false;
1614         }
1615         req = smb2req->subreq;
1616         if (!req) {
1617                 return false;
1618         }
1619         state = tevent_req_data(req, struct smbd_smb2_create_state);
1620         if (!state) {
1621                 return false;
1622         }
1623         state->id = id;
1624         state->request_time = request_time;
1625         state->open_rec = talloc_move(state, &open_rec);
1626
1627         /* Re-schedule us to retry on timer expiry. */
1628         end_time = timeval_sum(&request_time, &timeout);
1629
1630         DEBUG(10,("push_deferred_open_message_smb2: "
1631                 "timeout at %s\n",
1632                 timeval_string(talloc_tos(),
1633                                 &end_time,
1634                                 true) ));
1635
1636         state->open_was_deferred = true;
1637
1638         /* allow this request to be canceled */
1639         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1640
1641         return true;
1642 }