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                         ea_list = read_nttrans_ea_list(mem_ctx,
 707                                 (const char *)exta->data.data, exta->data.length);
 708                         if (!ea_list) {
 709                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 710                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 711                                 return tevent_req_post(req, ev);
 712                         }
 713
 714                         if (ea_list_has_invalid_name(ea_list)) {
 715                                 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
 716                                 return tevent_req_post(req, ev);
 717                         }
 718                 }
 719
 720                 if (mxac) {
 721                         if (mxac->data.length == 0) {
 722                                 max_access_time = 0;
 723                         } else if (mxac->data.length == 8) {
 724                                 max_access_time = BVAL(mxac->data.data, 0);
 725                         } else {
 726                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 727                                 return tevent_req_post(req, ev);
 728                         }
 729                 }
 730
 731                 if (secd) {
 732                         enum ndr_err_code ndr_err;
 733
 734                         sec_desc = talloc_zero(state, struct security_descriptor);
 735                         if (tevent_req_nomem(sec_desc, req)) {
 736                                 return tevent_req_post(req, ev);
 737                         }
 738
 739                         ndr_err = ndr_pull_struct_blob(&secd->data,
 740                                 sec_desc, sec_desc,
 741                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 742                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 743                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 744                                          ndr_errstr(ndr_err)));
 745                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 746                                 return tevent_req_post(req, ev);
 747                         }
 748                 }
 749
 750                 if (dhnq) {
 751                         if (dhnq->data.length != 16) {
 752                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 753                                 return tevent_req_post(req, ev);
 754                         }
 755
 756                         if (dh2q) {
 757                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 758                                 return tevent_req_post(req, ev);
 759                         }
 760
 761                         /*
 762                          * durable handle request is processed below.
 763                          */
 764                         durable_requested = true;
 765                         /*
 766                          * Set the timeout to 16 mins.
 767                          *
 768                          * TODO: test this against Windows 2012
 769                          *       as the default for durable v2 is 1 min.
 770                          */
 771                         durable_timeout_msec = (16*60*1000);
 772                 }
 773
 774                 if (dh2q) {
 775                         const uint8_t *p = dh2q->data.data;
 776                         uint32_t durable_v2_timeout = 0;
 777                         DATA_BLOB create_guid_blob;
 778
 779                         if (dh2q->data.length != 32) {
 780                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 781                                 return tevent_req_post(req, ev);
 782                         }
 783
 784                         if (dhnq) {
 785                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 786                                 return tevent_req_post(req, ev);
 787                         }
 788
 789                         durable_v2_timeout = IVAL(p, 0);
 790                         create_guid_blob = data_blob_const(p + 16, 16);
 791
 792                         status = GUID_from_ndr_blob(&create_guid_blob,
 793                                                     &_create_guid);
 794                         if (tevent_req_nterror(req, status)) {
 795                                 return tevent_req_post(req, ev);
 796                         }
 797                         create_guid = &_create_guid;
 798                         /*
 799                          * we need to store the create_guid later
 800                          */
 801                         update_open = true;
 802
 803                         /*
 804                          * durable handle v2 request processed below
 805                          */
 806                         durable_requested = true;
 807                         durable_timeout_msec = durable_v2_timeout;
 808                         if (durable_timeout_msec == 0) {
 809                                 /*
 810                                  * Set the timeout to 1 min as default.
 811                                  *
 812                                  * This matches Windows 2012.
 813                                  */
 814                                 durable_timeout_msec = (60*1000);
 815                         }
 816                 }
 817
 818                 if (dhnc) {
 819                         persistent_id = BVAL(dhnc->data.data, 0);
 820
 821                         do_durable_reconnect = true;
 822                 }
 823
 824                 if (dh2c) {
 825                         const uint8_t *p = dh2c->data.data;
 826                         DATA_BLOB create_guid_blob;
 827
 828                         persistent_id = BVAL(p, 0);
 829                         create_guid_blob = data_blob_const(p + 16, 16);
 830
 831                         status = GUID_from_ndr_blob(&create_guid_blob,
 832                                                     &_create_guid);
 833                         if (tevent_req_nterror(req, status)) {
 834                                 return tevent_req_post(req, ev);
 835                         }
 836                         create_guid = &_create_guid;
 837
 838                         do_durable_reconnect = true;
 839                 }
 840
 841                 if (alsi) {
 842                         if (alsi->data.length != 8) {
 843                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 844                                 return tevent_req_post(req, ev);
 845                         }
 846                         allocation_size = BVAL(alsi->data.data, 0);
 847                 }
 848
 849                 if (twrp) {
 850                         NTTIME nttime;
 851                         time_t t;
 852                         struct tm *tm;
 853
 854                         if (twrp->data.length != 8) {
 855                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 856                                 return tevent_req_post(req, ev);
 857                         }
 858
 859                         nttime = BVAL(twrp->data.data, 0);
 860                         t = nt_time_to_unix(nttime);
 861                         tm = gmtime(&t);
 862
 863                         TALLOC_FREE(fname);
 864                         fname = talloc_asprintf(state,
 865                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 866                                         tm->tm_year + 1900,
 867                                         tm->tm_mon + 1,
 868                                         tm->tm_mday,
 869                                         tm->tm_hour,
 870                                         tm->tm_min,
 871                                         tm->tm_sec,
 872                                         in_name);
 873                         if (tevent_req_nomem(fname, req)) {
 874                                 return tevent_req_post(req, ev);
 875                         }
 876                 }
 877
 878                 if (qfid) {
 879                         if (qfid->data.length != 0) {
 880                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 881                                 return tevent_req_post(req, ev);
 882                         }
 883                 }
 884
 885                 if (rqls) {
 886                         lease_len = smb2_lease_pull(
 887                                 rqls->data.data, rqls->data.length, &lease);
 888                         if (lease_len == -1) {
 889                                 tevent_req_nterror(
 890                                         req, NT_STATUS_INVALID_PARAMETER);
 891                                 return tevent_req_post(req, ev);
 892                         }
 893                         lease_ptr = &lease;
 894
 895                         if (DEBUGLEVEL >= 10) {
 896                                 DEBUG(10, ("Got lease request size %d\n",
 897                                            (int)lease_len));
 898                                 NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
 899                         }
 900
 901                         if (!smb2_lease_key_valid(&lease.lease_key)) {
 902                                 lease_ptr = NULL;
 903                                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 904                         }
 905
 906                         if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
 907                             (lease.lease_version != 1)) {
 908                                 DEBUG(10, ("v2 lease key only for SMB3\n"));
 909                                 lease_ptr = NULL;
 910                         }
 911                 }
 912
 913                 if (svhdx != NULL) {
 914                         /* SharedVHD is not yet supported */
 915                         tevent_req_nterror(
 916                                 req, NT_STATUS_INVALID_DEVICE_REQUEST);
 917                         return tevent_req_post(req, ev);
 918                 }
 919
 920                 /* these are ignored for SMB2 */
 921                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 922                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 923
 924                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 925
 926                 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
 927
 928                 /*
 929                  * For the backend file open procedure, there are
 930                  * two possible modes: durable_reconnect or not.
 931                  */
 932                 if (do_durable_reconnect) {
 933                         DATA_BLOB new_cookie = data_blob_null;
 934                         NTTIME now = timeval_to_nttime(&smb2req->request_time);
 935
 936                         status = smb2srv_open_recreate(smb2req->xconn,
 937                                                 smb1req->conn->session_info,
 938                                                 persistent_id, create_guid,
 939                                                 now, &op);
 940                         if (!NT_STATUS_IS_OK(status)) {
 941                                 DEBUG(3, ("smbd_smb2_create_send: "
 942                                           "smb2srv_open_recreate failed: %s\n",
 943                                           nt_errstr(status)));
 944                                 tevent_req_nterror(req, status);
 945                                 return tevent_req_post(req, ev);
 946                         }
 947
 948                         DEBUG(10, ("smb2_create_send: %s to recreate the "
 949                                    "smb2srv_open struct for a durable handle.\n",
 950                                    op->global->durable ? "succeded" : "failed"));
 951
 952                         if (!op->global->durable) {
 953                                 talloc_free(op);
 954                                 tevent_req_nterror(req,
 955                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 956                                 return tevent_req_post(req, ev);
 957                         }
 958
 959                         status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
 960                                                 smb1req,
 961                                                 op, /* smbXsrv_open input */
 962                                                 op->global->backend_cookie,
 963                                                 op, /* TALLOC_CTX */
 964                                                 &result, &new_cookie);
 965                         if (!NT_STATUS_IS_OK(status)) {
 966                                 NTSTATUS return_status;
 967
 968                                 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 969
 970                                 DEBUG(3, ("smbd_smb2_create_send: "
 971                                           "durable_reconnect failed: %s => %s\n",
 972                                           nt_errstr(status),
 973                                           nt_errstr(return_status)));
 974
 975                                 tevent_req_nterror(req, return_status);
 976                                 return tevent_req_post(req, ev);
 977                         }
 978
 979                         DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
 980                                    (unsigned)result->oplock_type, lease_ptr));
 981
 982                         status = smbd_smb2_create_durable_lease_check(
 983                                 fname, result, lease_ptr);
 984                         if (!NT_STATUS_IS_OK(status)) {
 985                                 close_file(smb1req, result, SHUTDOWN_CLOSE);
 986                                 tevent_req_nterror(req, status);
 987                                 return tevent_req_post(req, ev);
 988                         }
 989
 990                         data_blob_free(&op->global->backend_cookie);
 991                         op->global->backend_cookie = new_cookie;
 992
 993                         op->status = NT_STATUS_OK;
 994                         op->global->disconnect_time = 0;
 995
 996                         /* save the timout for later update */
 997                         durable_timeout_msec = op->global->durable_timeout_msec;
 998
 999                         update_open = true;
1000
1001                         info = FILE_WAS_OPENED;
1002                 } else {
1003                         struct smb_filename *smb_fname = NULL;
1004
1005                         if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1006                                 if (lease_ptr == NULL) {
1007                                         requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1008                                 }
1009                         } else {
1010                                 lease_ptr = NULL;
1011                         }
1012
1013                         /*
1014                          * For a DFS path the function parse_dfs_path()
1015                          * will do the path processing.
1016                          */
1017
1018                         if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1019                                 /* convert '\\' into '/' */
1020                                 status = check_path_syntax(fname);
1021                                 if (!NT_STATUS_IS_OK(status)) {
1022                                         tevent_req_nterror(req, status);
1023                                         return tevent_req_post(req, ev);
1024                                 }
1025                         }
1026
1027                         status = filename_convert(req,
1028                                                   smb1req->conn,
1029                                                   smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
1030                                                   fname,
1031                                                   UCF_PREP_CREATEFILE,
1032                                                   NULL, /* ppath_contains_wcards */
1033                                                   &smb_fname);
1034                         if (!NT_STATUS_IS_OK(status)) {
1035                                 tevent_req_nterror(req, status);
1036                                 return tevent_req_post(req, ev);
1037                         }
1038
1039                         /*
1040                          * MS-SMB2: 2.2.13 SMB2 CREATE Request
1041                          * ImpersonationLevel ... MUST contain one of the
1042                          * following values. The server MUST validate this
1043                          * field, but otherwise ignore it.
1044                          *
1045                          * NB. The source4/torture/smb2/durable_open.c test
1046                          * shows this check is only done on real opens, not
1047                          * on durable handle-reopens.
1048                          */
1049
1050                         if (in_impersonation_level >
1051                                         SMB2_IMPERSONATION_DELEGATE) {
1052                                 tevent_req_nterror(req,
1053                                         NT_STATUS_BAD_IMPERSONATION_LEVEL);
1054                                 return tevent_req_post(req, ev);
1055                         }
1056
1057                         /*
1058                          * We know we're going to do a local open, so now
1059                          * we must be protocol strict. JRA.
1060                          *
1061                          * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1062                          * If the file name length is greater than zero and the
1063                          * first character is a path separator character, the
1064                          * server MUST fail the request with
1065                          * STATUS_INVALID_PARAMETER.
1066                          */
1067                         if (in_name[0] == '\\' || in_name[0] == '/') {
1068                                 tevent_req_nterror(req,
1069                                         NT_STATUS_INVALID_PARAMETER);
1070                                 return tevent_req_post(req, ev);
1071                         }
1072
1073                         status = SMB_VFS_CREATE_FILE(smb1req->conn,
1074                                                      smb1req,
1075                                                      0, /* root_dir_fid */
1076                                                      smb_fname,
1077                                                      in_desired_access,
1078                                                      in_share_access,
1079                                                      in_create_disposition,
1080                                                      in_create_options,
1081                                                      in_file_attributes,
1082                                                      map_smb2_oplock_levels_to_samba(requested_oplock_level),
1083                                                      lease_ptr,
1084                                                      allocation_size,
1085                                                      0, /* private_flags */
1086                                                      sec_desc,
1087                                                      ea_list,
1088                                                      &result,
1089                                                      &info,
1090                                                      &in_context_blobs,
1091                                                      state->out_context_blobs);
1092                         if (!NT_STATUS_IS_OK(status)) {
1093                                 if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1094                                         SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1095                                         return req;
1096                                 }
1097                                 tevent_req_nterror(req, status);
1098                                 return tevent_req_post(req, ev);
1099                         }
1100                         op = result->op;
1101                 }
1102
1103                 /*
1104                  * here we have op == result->op
1105                  */
1106
1107                 DEBUG(10, ("smbd_smb2_create_send: "
1108                            "response construction phase\n"));
1109
1110                 if (mxac) {
1111                         NTTIME last_write_time;
1112
1113                         last_write_time = unix_timespec_to_nt_time(
1114                                                  result->fsp_name->st.st_ex_mtime);
1115                         if (last_write_time != max_access_time) {
1116                                 uint8_t p[8];
1117                                 uint32_t max_access_granted;
1118                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1119
1120                                 status = smbd_calculate_access_mask(smb1req->conn,
1121                                                         result->fsp_name,
1122                                                         false,
1123                                                         SEC_FLAG_MAXIMUM_ALLOWED,
1124                                                         &max_access_granted);
1125
1126                                 SIVAL(p, 0, NT_STATUS_V(status));
1127                                 SIVAL(p, 4, max_access_granted);
1128
1129                                 status = smb2_create_blob_add(
1130                                     state->out_context_blobs,
1131                                     state->out_context_blobs,
1132                                     SMB2_CREATE_TAG_MXAC,
1133                                     blob);
1134                                 if (!NT_STATUS_IS_OK(status)) {
1135                                         tevent_req_nterror(req, status);
1136                                         return tevent_req_post(req, ev);
1137                                 }
1138                         }
1139                 }
1140
1141                 if (durable_requested &&
1142                     (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1143                 {
1144                         status = SMB_VFS_DURABLE_COOKIE(result,
1145                                                 op,
1146                                                 &op->global->backend_cookie);
1147                         if (!NT_STATUS_IS_OK(status)) {
1148                                 op->global->backend_cookie = data_blob_null;
1149                         }
1150                 }
1151                 if (op->global->backend_cookie.length > 0) {
1152                         update_open = true;
1153
1154                         op->global->durable = true;
1155                         op->global->durable_timeout_msec = durable_timeout_msec;
1156                 }
1157
1158                 if (update_open) {
1159                         op->global->create_guid = _create_guid;
1160
1161                         status = smbXsrv_open_update(op);
1162                         DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1163                                    "returned %s\n",
1164                                    nt_errstr(status)));
1165                         if (!NT_STATUS_IS_OK(status)) {
1166                                 tevent_req_nterror(req, status);
1167                                 return tevent_req_post(req, ev);
1168                         }
1169                 }
1170
1171                 if (dhnq && op->global->durable) {
1172                         uint8_t p[8] = { 0, };
1173                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1174
1175                         status = smb2_create_blob_add(state->out_context_blobs,
1176                                                       state->out_context_blobs,
1177                                                       SMB2_CREATE_TAG_DHNQ,
1178                                                       blob);
1179                         if (!NT_STATUS_IS_OK(status)) {
1180                                 tevent_req_nterror(req, status);
1181                                 return tevent_req_post(req, ev);
1182                         }
1183                 }
1184
1185                 if (dh2q && op->global->durable) {
1186                         uint8_t p[8] = { 0, };
1187                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1188                         uint32_t durable_v2_response_flags = 0;
1189
1190                         SIVAL(p, 0, op->global->durable_timeout_msec);
1191                         SIVAL(p, 4, durable_v2_response_flags);
1192
1193                         status = smb2_create_blob_add(state->out_context_blobs,
1194                                                       state->out_context_blobs,
1195                                                       SMB2_CREATE_TAG_DH2Q,
1196                                                       blob);
1197                         if (!NT_STATUS_IS_OK(status)) {
1198                                 tevent_req_nterror(req, status);
1199                                 return tevent_req_post(req, ev);
1200                         }
1201                 }
1202
1203                 if (qfid) {
1204                         uint8_t p[32];
1205                         uint64_t file_index = get_FileIndex(result->conn,
1206                                                         &result->fsp_name->st);
1207                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1208
1209                         ZERO_STRUCT(p);
1210
1211                         /* From conversations with Microsoft engineers at
1212                            the MS plugfest. The first 8 bytes are the "volume index"
1213                            == inode, the second 8 bytes are the "volume id",
1214                            == dev. This will be updated in the SMB2 doc. */
1215                         SBVAL(p, 0, file_index);
1216                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1217
1218                         status = smb2_create_blob_add(state->out_context_blobs,
1219                                                       state->out_context_blobs,
1220                                                       SMB2_CREATE_TAG_QFID,
1221                                                       blob);
1222                         if (!NT_STATUS_IS_OK(status)) {
1223                                 tevent_req_nterror(req, status);
1224                                 return tevent_req_post(req, ev);
1225                         }
1226                 }
1227
1228                 if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1229                         uint8_t buf[52];
1230
1231                         lease = result->lease->lease;
1232
1233                         lease_len = sizeof(buf);
1234                         if (lease.lease_version == 1) {
1235                                 lease_len = 32;
1236                         }
1237
1238                         if (!smb2_lease_push(&lease, buf, lease_len)) {
1239                                 tevent_req_nterror(
1240                                         req, NT_STATUS_INTERNAL_ERROR);
1241                                 return tevent_req_post(req, ev);
1242                         }
1243
1244                         status = smb2_create_blob_add(
1245                                 state, state->out_context_blobs,
1246                                 SMB2_CREATE_TAG_RQLS,
1247                                 data_blob_const(buf, lease_len));
1248                         if (!NT_STATUS_IS_OK(status)) {
1249                                 tevent_req_nterror(req, status);
1250                                 return tevent_req_post(req, ev);
1251                         }
1252                 }
1253         }
1254
1255         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1256
1257         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1258                 state->out_oplock_level = in_oplock_level;
1259         } else {
1260                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1261         }
1262
1263         if ((in_create_disposition == FILE_SUPERSEDE)
1264             && (info == FILE_WAS_OVERWRITTEN)) {
1265                 state->out_create_action = FILE_WAS_SUPERSEDED;
1266         } else {
1267                 state->out_create_action = info;
1268         }
1269         state->out_file_attributes = dos_mode(result->conn,
1270                                            result->fsp_name);
1271
1272         state->out_creation_ts = get_create_timespec(smb1req->conn,
1273                                         result, result->fsp_name);
1274         state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1275         state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1276         state->out_change_ts = get_change_timespec(smb1req->conn,
1277                                         result, result->fsp_name);
1278         state->out_allocation_size =
1279                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1280                                                &(result->fsp_name->st));
1281         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1282         if (state->out_file_attributes == 0) {
1283                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1284         }
1285         state->out_file_id_persistent = result->op->global->open_persistent_id;
1286         state->out_file_id_volatile = result->op->global->open_volatile_id;
1287
1288         DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1289                   fsp_str_dbg(result), fsp_fnum_dbg(result)));
1290
1291         tevent_req_done(req);
1292         return tevent_req_post(req, ev);
1293 }
1294
1295 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1296                         TALLOC_CTX *mem_ctx,
1297                         uint8_t *out_oplock_level,
1298                         uint32_t *out_create_action,
1299                         struct timespec *out_creation_ts,
1300                         struct timespec *out_last_access_ts,
1301                         struct timespec *out_last_write_ts,
1302                         struct timespec *out_change_ts,
1303                         uint64_t *out_allocation_size,
1304                         uint64_t *out_end_of_file,
1305                         uint32_t *out_file_attributes,
1306                         uint64_t *out_file_id_persistent,
1307                         uint64_t *out_file_id_volatile,
1308                         struct smb2_create_blobs *out_context_blobs)
1309 {
1310         NTSTATUS status;
1311         struct smbd_smb2_create_state *state = tevent_req_data(req,
1312                                                struct smbd_smb2_create_state);
1313
1314         if (tevent_req_is_nterror(req, &status)) {
1315                 tevent_req_received(req);
1316                 return status;
1317         }
1318
1319         *out_oplock_level       = state->out_oplock_level;
1320         *out_create_action      = state->out_create_action;
1321         *out_creation_ts        = state->out_creation_ts;
1322         *out_last_access_ts     = state->out_last_access_ts;
1323         *out_last_write_ts      = state->out_last_write_ts;
1324         *out_change_ts          = state->out_change_ts;
1325         *out_allocation_size    = state->out_allocation_size;
1326         *out_end_of_file        = state->out_end_of_file;
1327         *out_file_attributes    = state->out_file_attributes;
1328         *out_file_id_persistent = state->out_file_id_persistent;
1329         *out_file_id_volatile   = state->out_file_id_volatile;
1330         *out_context_blobs      = *(state->out_context_blobs);
1331
1332         talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1333
1334         tevent_req_received(req);
1335         return NT_STATUS_OK;
1336 }
1337
1338 /*********************************************************
1339  Code for dealing with deferred opens.
1340 *********************************************************/
1341
1342 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1343                         struct timeval *p_request_time,
1344                         struct deferred_open_record **open_rec)
1345 {
1346         struct smbd_smb2_create_state *state = NULL;
1347         struct tevent_req *req = NULL;
1348
1349         if (!smb2req) {
1350                 return false;
1351         }
1352         req = smb2req->subreq;
1353         if (!req) {
1354                 return false;
1355         }
1356         state = tevent_req_data(req, struct smbd_smb2_create_state);
1357         if (!state) {
1358                 return false;
1359         }
1360         if (!state->open_was_deferred) {
1361                 return false;
1362         }
1363         if (p_request_time) {
1364                 *p_request_time = state->request_time;
1365         }
1366         if (open_rec != NULL) {
1367                 *open_rec = state->open_rec;
1368         }
1369         return true;
1370 }
1371
1372 /*********************************************************
1373  Re-process this call early - requested by message or
1374  close.
1375 *********************************************************/
1376
1377 static struct smbd_smb2_request *find_open_smb2req(
1378         struct smbXsrv_connection *xconn, uint64_t mid)
1379 {
1380         struct smbd_smb2_request *smb2req;
1381
1382         for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1383                 uint64_t message_id;
1384                 if (smb2req->subreq == NULL) {
1385                         /* This message has been processed. */
1386                         continue;
1387                 }
1388                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1389                         /* This message has been processed. */
1390                         continue;
1391                 }
1392                 message_id = get_mid_from_smb2req(smb2req);
1393                 if (message_id == mid) {
1394                         return smb2req;
1395                 }
1396         }
1397         return NULL;
1398 }
1399
1400 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1401 {
1402         struct smbd_smb2_create_state *state = NULL;
1403         struct smbd_smb2_request *smb2req;
1404
1405         smb2req = find_open_smb2req(xconn, mid);
1406
1407         if (!smb2req) {
1408                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1409                         (unsigned long long)mid));
1410                 return false;
1411         }
1412         if (!smb2req->subreq) {
1413                 return false;
1414         }
1415         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1416                 return false;
1417         }
1418         state = tevent_req_data(smb2req->subreq,
1419                         struct smbd_smb2_create_state);
1420         if (!state) {
1421                 return false;
1422         }
1423         /* It's not in progress if there's no timeout event. */
1424         if (!state->open_was_deferred) {
1425                 return false;
1426         }
1427
1428         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1429                         (unsigned long long)mid));
1430
1431         return true;
1432 }
1433
1434 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1435                                                         uint64_t mid)
1436 {
1437         struct smbd_smb2_create_state *state = NULL;
1438
1439         if (!smb2req->subreq) {
1440                 return;
1441         }
1442         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1443                 return;
1444         }
1445         state = tevent_req_data(smb2req->subreq,
1446                         struct smbd_smb2_create_state);
1447         if (!state) {
1448                 return;
1449         }
1450
1451         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1452                 "mid %llu\n",
1453                 (unsigned long long)mid ));
1454
1455         state->open_was_deferred = false;
1456         /* Ensure we don't have any outstanding timer event. */
1457         TALLOC_FREE(state->te);
1458         /* Ensure we don't have any outstanding immediate event. */
1459         TALLOC_FREE(state->im);
1460 }
1461
1462 void remove_deferred_open_message_smb2(
1463         struct smbXsrv_connection *xconn, uint64_t mid)
1464 {
1465         struct smbd_smb2_request *smb2req;
1466
1467         smb2req = find_open_smb2req(xconn, mid);
1468
1469         if (!smb2req) {
1470                 DEBUG(10,("remove_deferred_open_message_smb2: "
1471                         "can't find mid %llu\n",
1472                         (unsigned long long)mid ));
1473                 return;
1474         }
1475         remove_deferred_open_message_smb2_internal(smb2req, mid);
1476 }
1477
1478 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1479                                         struct tevent_immediate *im,
1480                                         void *private_data)
1481 {
1482         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1483                                         struct smbd_smb2_request);
1484         uint64_t mid = get_mid_from_smb2req(smb2req);
1485         NTSTATUS status;
1486
1487         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1488                 "re-dispatching mid %llu\n",
1489                 (unsigned long long)mid ));
1490
1491         status = smbd_smb2_request_dispatch(smb2req);
1492         if (!NT_STATUS_IS_OK(status)) {
1493                 smbd_server_connection_terminate(smb2req->xconn,
1494                                                  nt_errstr(status));
1495                 return;
1496         }
1497 }
1498
1499 bool schedule_deferred_open_message_smb2(
1500         struct smbXsrv_connection *xconn, uint64_t mid)
1501 {
1502         struct smbd_smb2_create_state *state = NULL;
1503         struct smbd_smb2_request *smb2req;
1504
1505         smb2req = find_open_smb2req(xconn, mid);
1506
1507         if (!smb2req) {
1508                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1509                         "can't find mid %llu\n",
1510                         (unsigned long long)mid ));
1511                 return false;
1512         }
1513         if (!smb2req->subreq) {
1514                 return false;
1515         }
1516         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1517                 return false;
1518         }
1519         state = tevent_req_data(smb2req->subreq,
1520                         struct smbd_smb2_create_state);
1521         if (!state) {
1522                 return false;
1523         }
1524
1525         /* Ensure we don't have any outstanding timer event. */
1526         TALLOC_FREE(state->te);
1527         /* Ensure we don't have any outstanding immediate event. */
1528         TALLOC_FREE(state->im);
1529
1530         /*
1531          * This is subtle. We must null out the callback
1532          * before rescheduling, else the first call to
1533          * tevent_req_nterror() causes the _receive()
1534          * function to be called, this causing tevent_req_post()
1535          * to crash.
1536          */
1537         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1538
1539         state->im = tevent_create_immediate(smb2req);
1540         if (!state->im) {
1541                 smbd_server_connection_terminate(smb2req->xconn,
1542                         nt_errstr(NT_STATUS_NO_MEMORY));
1543                 return false;
1544         }
1545
1546         DEBUG(10,("schedule_deferred_open_message_smb2: "
1547                 "re-processing mid %llu\n",
1548                 (unsigned long long)mid ));
1549
1550         tevent_schedule_immediate(state->im,
1551                         smb2req->sconn->ev_ctx,
1552                         smbd_smb2_create_request_dispatch_immediate,
1553                         smb2req);
1554
1555         return true;
1556 }
1557
1558 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1559 {
1560         struct smbd_smb2_request *smb2req = NULL;
1561         struct smbd_smb2_create_state *state = tevent_req_data(req,
1562                                 struct smbd_smb2_create_state);
1563         uint64_t mid;
1564
1565         if (!state) {
1566                 return false;
1567         }
1568
1569         if (!state->smb2req) {
1570                 return false;
1571         }
1572
1573         smb2req = state->smb2req;
1574         mid = get_mid_from_smb2req(smb2req);
1575
1576         if (is_deferred_open_async(state->open_rec)) {
1577                 /* Can't cancel an async create. */
1578                 return false;
1579         }
1580
1581         remove_deferred_open_message_smb2_internal(smb2req, mid);
1582
1583         tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1584         tevent_req_nterror(req, NT_STATUS_CANCELLED);
1585         return true;
1586 }
1587
1588 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1589                                 struct timeval request_time,
1590                                 struct timeval timeout,
1591                                 struct file_id id,
1592                                 struct deferred_open_record *open_rec)
1593 {
1594         struct tevent_req *req = NULL;
1595         struct smbd_smb2_create_state *state = NULL;
1596         struct timeval end_time;
1597
1598         if (!smb2req) {
1599                 return false;
1600         }
1601         req = smb2req->subreq;
1602         if (!req) {
1603                 return false;
1604         }
1605         state = tevent_req_data(req, struct smbd_smb2_create_state);
1606         if (!state) {
1607                 return false;
1608         }
1609         state->id = id;
1610         state->request_time = request_time;
1611         state->open_rec = talloc_move(state, &open_rec);
1612
1613         /* Re-schedule us to retry on timer expiry. */
1614         end_time = timeval_sum(&request_time, &timeout);
1615
1616         DEBUG(10,("push_deferred_open_message_smb2: "
1617                 "timeout at %s\n",
1618                 timeval_string(talloc_tos(),
1619                                 &end_time,
1620                                 true) ));
1621
1622         state->open_was_deferred = true;
1623
1624         /* allow this request to be canceled */
1625         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1626
1627         return true;
1628 }