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 "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "../librpc/gen_ndr/ndr_security.h"
  26
  27 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  28 {
  29         switch(in_oplock_level) {
  30         case SMB2_OPLOCK_LEVEL_NONE:
  31                 return NO_OPLOCK;
  32         case SMB2_OPLOCK_LEVEL_II:
  33                 return LEVEL_II_OPLOCK;
  34         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  35                 return EXCLUSIVE_OPLOCK;
  36         case SMB2_OPLOCK_LEVEL_BATCH:
  37                 return BATCH_OPLOCK;
  38         case SMB2_OPLOCK_LEVEL_LEASE:
  39                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  40                         "LEASE_OPLOCK_REQUESTED\n"));
  41                 return NO_OPLOCK;
  42         default:
  43                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  44                         "unknown level %u\n",
  45                         (unsigned int)in_oplock_level));
  46                 return NO_OPLOCK;
  47         }
  48 }
  49
  50 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  51 {
  52         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  53                 return SMB2_OPLOCK_LEVEL_BATCH;
  54         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  55                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  56         } else if (oplock_type == LEVEL_II_OPLOCK) {
  57                 /*
  58                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  59                  * this also includes FAKE_LEVEL_II_OPLOCKs
  60                  * which are internal only.
  61                  */
  62                 return SMB2_OPLOCK_LEVEL_II;
  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                         NTTIME *out_creation_time,
  85                         NTTIME *out_last_access_time,
  86                         NTTIME *out_last_write_time,
  87                         NTTIME *out_change_time,
  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         int i = smb2req->current_idx;
 100         size_t expected_body_size = 0x39;
 101         size_t body_size;
 102         uint8_t in_oplock_level;
 103         uint32_t in_impersonation_level;
 104         uint32_t in_desired_access;
 105         uint32_t in_file_attributes;
 106         uint32_t in_share_access;
 107         uint32_t in_create_disposition;
 108         uint32_t in_create_options;
 109         uint16_t in_name_offset;
 110         uint16_t in_name_length;
 111         DATA_BLOB in_name_buffer;
 112         char *in_name_string;
 113         size_t in_name_string_size;
 114         uint32_t name_offset = 0;
 115         uint32_t name_available_length = 0;
 116         uint32_t in_context_offset;
 117         uint32_t in_context_length;
 118         DATA_BLOB in_context_buffer;
 119         struct smb2_create_blobs in_context_blobs;
 120         uint32_t context_offset = 0;
 121         uint32_t context_available_length = 0;
 122         uint32_t dyn_offset;
 123         NTSTATUS status;
 124         bool ok;
 125         struct tevent_req *tsubreq;
 126
 127         if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
 128                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 129         }
 130
 131         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 132
 133         body_size = SVAL(inbody, 0x00);
 134         if (body_size != expected_body_size) {
 135                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 136         }
 137
 138         in_oplock_level         = CVAL(inbody, 0x03);
 139         in_impersonation_level  = IVAL(inbody, 0x04);
 140         in_desired_access       = IVAL(inbody, 0x18);
 141         in_file_attributes      = IVAL(inbody, 0x1C);
 142         in_share_access         = IVAL(inbody, 0x20);
 143         in_create_disposition   = IVAL(inbody, 0x24);
 144         in_create_options       = IVAL(inbody, 0x28);
 145         in_name_offset          = SVAL(inbody, 0x2C);
 146         in_name_length          = SVAL(inbody, 0x2E);
 147         in_context_offset       = IVAL(inbody, 0x30);
 148         in_context_length       = IVAL(inbody, 0x34);
 149
 150         /*
 151          * First check if the dynamic name and context buffers
 152          * are correctly specified.
 153          *
 154          * Note: That we don't check if the name and context buffers
 155          *       overlap
 156          */
 157
 158         dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
 159
 160         if (in_name_offset == 0 && in_name_length == 0) {
 161                 /* This is ok */
 162                 name_offset = 0;
 163         } else if (in_name_offset < dyn_offset) {
 164                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 165         } else {
 166                 name_offset = in_name_offset - dyn_offset;
 167         }
 168
 169         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 170                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 171         }
 172
 173         name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
 174
 175         if (in_name_length > name_available_length) {
 176                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 177         }
 178
 179         in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 180                               name_offset;
 181         in_name_buffer.length = in_name_length;
 182
 183         if (in_context_offset == 0 && in_context_length == 0) {
 184                 /* This is ok */
 185                 context_offset = 0;
 186         } else if (in_context_offset < dyn_offset) {
 187                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 188         } else {
 189                 context_offset = in_context_offset - dyn_offset;
 190         }
 191
 192         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 193                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 194         }
 195
 196         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 197
 198         if (in_context_length > context_available_length) {
 199                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 200         }
 201
 202         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 203                                   context_offset;
 204         in_context_buffer.length = in_context_length;
 205
 206         /*
 207          * Now interpret the name and context buffers
 208          */
 209
 210         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 211                                    in_name_buffer.data,
 212                                    in_name_buffer.length,
 213                                    &in_name_string,
 214                                    &in_name_string_size, false);
 215         if (!ok) {
 216                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 217         }
 218
 219         ZERO_STRUCT(in_context_blobs);
 220         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 221         if (!NT_STATUS_IS_OK(status)) {
 222                 return smbd_smb2_request_error(smb2req, status);
 223         }
 224
 225         tsubreq = smbd_smb2_create_send(smb2req,
 226                                        smb2req->sconn->smb2.event_ctx,
 227                                        smb2req,
 228                                        in_oplock_level,
 229                                        in_impersonation_level,
 230                                        in_desired_access,
 231                                        in_file_attributes,
 232                                        in_share_access,
 233                                        in_create_disposition,
 234                                        in_create_options,
 235                                        in_name_string,
 236                                        in_context_blobs);
 237         if (tsubreq == NULL) {
 238                 smb2req->subreq = NULL;
 239                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 240         }
 241         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 242
 243         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 244 }
 245
 246 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 247 {
 248         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 249         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 250 }
 251
 252 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 253 {
 254         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 255                                         struct smbd_smb2_request);
 256         int i = smb2req->current_idx;
 257         uint8_t *outhdr;
 258         DATA_BLOB outbody;
 259         DATA_BLOB outdyn;
 260         uint8_t out_oplock_level = 0;
 261         uint32_t out_create_action = 0;
 262         NTTIME out_creation_time = 0;
 263         NTTIME out_last_access_time = 0;
 264         NTTIME out_last_write_time = 0;
 265         NTTIME out_change_time = 0;
 266         uint64_t out_allocation_size = 0;
 267         uint64_t out_end_of_file = 0;
 268         uint32_t out_file_attributes = 0;
 269         uint64_t out_file_id_persistent = 0;
 270         uint64_t out_file_id_volatile = 0;
 271         struct smb2_create_blobs out_context_blobs;
 272         DATA_BLOB out_context_buffer;
 273         uint16_t out_context_buffer_offset = 0;
 274         NTSTATUS status;
 275         NTSTATUS error; /* transport error */
 276
 277         if (smb2req->cancelled) {
 278                 uint64_t mid = get_mid_from_smb2req(smb2req);
 279                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 280                         (unsigned long long)mid ));
 281                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 282                 if (!NT_STATUS_IS_OK(error)) {
 283                         smbd_server_connection_terminate(smb2req->sconn,
 284                                 nt_errstr(error));
 285                         return;
 286                 }
 287                 return;
 288         }
 289
 290         status = smbd_smb2_create_recv(tsubreq,
 291                                        smb2req,
 292                                        &out_oplock_level,
 293                                        &out_create_action,
 294                                        &out_creation_time,
 295                                        &out_last_access_time,
 296                                        &out_last_write_time,
 297                                        &out_change_time,
 298                                        &out_allocation_size,
 299                                        &out_end_of_file,
 300                                        &out_file_attributes,
 301                                        &out_file_id_persistent,
 302                                        &out_file_id_volatile,
 303                                        &out_context_blobs);
 304         if (!NT_STATUS_IS_OK(status)) {
 305                 error = smbd_smb2_request_error(smb2req, status);
 306                 if (!NT_STATUS_IS_OK(error)) {
 307                         smbd_server_connection_terminate(smb2req->sconn,
 308                                                          nt_errstr(error));
 309                         return;
 310                 }
 311                 return;
 312         }
 313
 314         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 315         if (!NT_STATUS_IS_OK(status)) {
 316                 error = smbd_smb2_request_error(smb2req, status);
 317                 if (!NT_STATUS_IS_OK(error)) {
 318                         smbd_server_connection_terminate(smb2req->sconn,
 319                                                          nt_errstr(error));
 320                         return;
 321                 }
 322                 return;
 323         }
 324
 325         if (out_context_buffer.length > 0) {
 326                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 327         }
 328
 329         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 330
 331         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 332         if (outbody.data == NULL) {
 333                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 334                 if (!NT_STATUS_IS_OK(error)) {
 335                         smbd_server_connection_terminate(smb2req->sconn,
 336                                                          nt_errstr(error));
 337                         return;
 338                 }
 339                 return;
 340         }
 341
 342         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 343         SCVAL(outbody.data, 0x02,
 344               out_oplock_level);                /* oplock level */
 345         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 346         SIVAL(outbody.data, 0x04,
 347               out_create_action);               /* create action */
 348         SBVAL(outbody.data, 0x08,
 349               out_creation_time);               /* creation time */
 350         SBVAL(outbody.data, 0x10,
 351               out_last_access_time);            /* last access time */
 352         SBVAL(outbody.data, 0x18,
 353               out_last_write_time);             /* last write time */
 354         SBVAL(outbody.data, 0x20,
 355               out_change_time);                 /* change time */
 356         SBVAL(outbody.data, 0x28,
 357               out_allocation_size);             /* allocation size */
 358         SBVAL(outbody.data, 0x30,
 359               out_end_of_file);                 /* end of file */
 360         SIVAL(outbody.data, 0x38,
 361               out_file_attributes);             /* file attributes */
 362         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 363         SBVAL(outbody.data, 0x40,
 364               out_file_id_persistent);          /* file id (persistent) */
 365         SBVAL(outbody.data, 0x48,
 366               out_file_id_volatile);            /* file id (volatile) */
 367         SIVAL(outbody.data, 0x50,
 368               out_context_buffer_offset);       /* create contexts offset */
 369         SIVAL(outbody.data, 0x54,
 370               out_context_buffer.length);       /* create contexts length */
 371
 372         outdyn = out_context_buffer;
 373
 374         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 375         if (!NT_STATUS_IS_OK(error)) {
 376                 smbd_server_connection_terminate(smb2req->sconn,
 377                                                  nt_errstr(error));
 378                 return;
 379         }
 380 }
 381
 382 struct smbd_smb2_create_state {
 383         struct smbd_smb2_request *smb2req;
 384         struct smb_request *smb1req;
 385         struct timed_event *te;
 386         struct tevent_immediate *im;
 387         struct timeval request_time;
 388         struct file_id id;
 389         DATA_BLOB private_data;
 390         uint8_t out_oplock_level;
 391         uint32_t out_create_action;
 392         NTTIME out_creation_time;
 393         NTTIME out_last_access_time;
 394         NTTIME out_last_write_time;
 395         NTTIME out_change_time;
 396         uint64_t out_allocation_size;
 397         uint64_t out_end_of_file;
 398         uint32_t out_file_attributes;
 399         uint64_t out_file_id_persistent;
 400         uint64_t out_file_id_volatile;
 401         struct smb2_create_blobs out_context_blobs;
 402 };
 403
 404 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 405                         struct tevent_context *ev,
 406                         struct smbd_smb2_request *smb2req,
 407                         uint8_t in_oplock_level,
 408                         uint32_t in_impersonation_level,
 409                         uint32_t in_desired_access,
 410                         uint32_t in_file_attributes,
 411                         uint32_t in_share_access,
 412                         uint32_t in_create_disposition,
 413                         uint32_t in_create_options,
 414                         const char *in_name,
 415                         struct smb2_create_blobs in_context_blobs)
 416 {
 417         struct tevent_req *req = NULL;
 418         struct smbd_smb2_create_state *state = NULL;
 419         NTSTATUS status;
 420         struct smb_request *smb1req = NULL;
 421         files_struct *result = NULL;
 422         int info;
 423         struct timespec write_time_ts;
 424         struct smb2_create_blobs out_context_blobs;
 425         int requested_oplock_level;
 426
 427         ZERO_STRUCT(out_context_blobs);
 428
 429         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 430                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 431         } else {
 432                 requested_oplock_level = in_oplock_level;
 433         }
 434
 435
 436         if (!smb2req->async) {
 437                 /* New create call. */
 438                 req = tevent_req_create(mem_ctx, &state,
 439                                 struct smbd_smb2_create_state);
 440                 if (req == NULL) {
 441                         return NULL;
 442                 }
 443                 state->smb2req = smb2req;
 444                 smb2req->subreq = req; /* So we can find this when going async. */
 445
 446                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 447                 if (tevent_req_nomem(smb1req, req)) {
 448                         return tevent_req_post(req, ev);
 449                 }
 450                 state->smb1req = smb1req;
 451                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 452                         in_name));
 453         } else {
 454                 /* Re-entrant create call. */
 455                 req = smb2req->subreq;
 456                 state = tevent_req_data(req,
 457                                 struct smbd_smb2_create_state);
 458                 smb1req = state->smb1req;
 459                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 460                         in_name ));
 461         }
 462
 463         if (IS_IPC(smb1req->conn)) {
 464                 const char *pipe_name = in_name;
 465
 466                 if (!lp_nt_pipe_support()) {
 467                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 468                         return tevent_req_post(req, ev);
 469                 }
 470
 471                 /* Strip \\ off the name. */
 472                 if (pipe_name[0] == '\\') {
 473                         pipe_name++;
 474                 }
 475
 476                 status = open_np_file(smb1req, pipe_name, &result);
 477                 if (!NT_STATUS_IS_OK(status)) {
 478                         tevent_req_nterror(req, status);
 479                         return tevent_req_post(req, ev);
 480                 }
 481                 info = FILE_WAS_OPENED;
 482         } else if (CAN_PRINT(smb1req->conn)) {
 483                 status = file_new(smb1req, smb1req->conn, &result);
 484                 if(!NT_STATUS_IS_OK(status)) {
 485                         tevent_req_nterror(req, status);
 486                         return tevent_req_post(req, ev);
 487                 }
 488
 489                 status = print_fsp_open(smb1req,
 490                                         smb1req->conn,
 491                                         in_name,
 492                                         smb1req->vuid,
 493                                         result);
 494                 if (!NT_STATUS_IS_OK(status)) {
 495                         file_free(smb1req, result);
 496                         tevent_req_nterror(req, status);
 497                         return tevent_req_post(req, ev);
 498                 }
 499                 info = FILE_WAS_CREATED;
 500         } else {
 501                 char *fname;
 502                 struct smb_filename *smb_fname = NULL;
 503                 struct smb2_create_blob *exta = NULL;
 504                 struct ea_list *ea_list = NULL;
 505                 struct smb2_create_blob *mxac = NULL;
 506                 NTTIME max_access_time = 0;
 507                 struct smb2_create_blob *secd = NULL;
 508                 struct security_descriptor *sec_desc = NULL;
 509                 struct smb2_create_blob *dhnq = NULL;
 510                 struct smb2_create_blob *dhnc = NULL;
 511                 struct smb2_create_blob *alsi = NULL;
 512                 uint64_t allocation_size = 0;
 513                 struct smb2_create_blob *twrp = NULL;
 514                 struct smb2_create_blob *qfid = NULL;
 515
 516                 exta = smb2_create_blob_find(&in_context_blobs,
 517                                              SMB2_CREATE_TAG_EXTA);
 518                 mxac = smb2_create_blob_find(&in_context_blobs,
 519                                              SMB2_CREATE_TAG_MXAC);
 520                 secd = smb2_create_blob_find(&in_context_blobs,
 521                                              SMB2_CREATE_TAG_SECD);
 522                 dhnq = smb2_create_blob_find(&in_context_blobs,
 523                                              SMB2_CREATE_TAG_DHNQ);
 524                 dhnc = smb2_create_blob_find(&in_context_blobs,
 525                                              SMB2_CREATE_TAG_DHNC);
 526                 alsi = smb2_create_blob_find(&in_context_blobs,
 527                                              SMB2_CREATE_TAG_ALSI);
 528                 twrp = smb2_create_blob_find(&in_context_blobs,
 529                                              SMB2_CREATE_TAG_TWRP);
 530                 qfid = smb2_create_blob_find(&in_context_blobs,
 531                                              SMB2_CREATE_TAG_QFID);
 532
 533                 fname = talloc_strdup(state, in_name);
 534                 if (tevent_req_nomem(fname, req)) {
 535                         return tevent_req_post(req, ev);
 536                 }
 537
 538                 if (exta) {
 539                         if (dhnc) {
 540                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 541                                 return tevent_req_post(req, ev);
 542                         }
 543
 544                         ea_list = read_nttrans_ea_list(mem_ctx,
 545                                 (const char *)exta->data.data, exta->data.length);
 546                         if (!ea_list) {
 547                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 548                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 549                                 return tevent_req_post(req, ev);
 550                         }
 551                 }
 552
 553                 if (mxac) {
 554                         if (dhnc) {
 555                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 556                                 return tevent_req_post(req, ev);
 557                         }
 558
 559                         if (mxac->data.length == 0) {
 560                                 max_access_time = 0;
 561                         } else if (mxac->data.length == 8) {
 562                                 max_access_time = BVAL(mxac->data.data, 0);
 563                         } else {
 564                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 565                                 return tevent_req_post(req, ev);
 566                         }
 567                 }
 568
 569                 if (secd) {
 570                         enum ndr_err_code ndr_err;
 571
 572                         if (dhnc) {
 573                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 574                                 return tevent_req_post(req, ev);
 575                         }
 576
 577                         sec_desc = talloc_zero(state, struct security_descriptor);
 578                         if (tevent_req_nomem(sec_desc, req)) {
 579                                 return tevent_req_post(req, ev);
 580                         }
 581
 582                         ndr_err = ndr_pull_struct_blob(&secd->data,
 583                                 sec_desc, sec_desc,
 584                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 585                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 586                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 587                                          ndr_errstr(ndr_err)));
 588                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 589                                 return tevent_req_post(req, ev);
 590                         }
 591                 }
 592
 593                 if (dhnq) {
 594                         if (dhnc) {
 595                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 596                                 return tevent_req_post(req, ev);
 597                         }
 598
 599                         if (dhnq->data.length != 16) {
 600                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 601                                 return tevent_req_post(req, ev);
 602                         }
 603                         /*
 604                          * we don't support durable handles yet
 605                          * and have to ignore this
 606                          */
 607                 }
 608
 609                 if (dhnc) {
 610                         if (dhnc->data.length != 16) {
 611                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 612                                 return tevent_req_post(req, ev);
 613                         }
 614                         /* we don't support durable handles yet */
 615                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 616                         return tevent_req_post(req, ev);
 617                 }
 618
 619                 if (alsi) {
 620                         if (dhnc) {
 621                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 622                                 return tevent_req_post(req, ev);
 623                         }
 624
 625                         if (alsi->data.length != 8) {
 626                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 627                                 return tevent_req_post(req, ev);
 628                         }
 629                         allocation_size = BVAL(alsi->data.data, 0);
 630                 }
 631
 632                 if (twrp) {
 633                         NTTIME nttime;
 634                         time_t t;
 635                         struct tm *tm;
 636
 637                         if (dhnc) {
 638                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 639                                 return tevent_req_post(req, ev);
 640                         }
 641
 642                         if (twrp->data.length != 8) {
 643                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 644                                 return tevent_req_post(req, ev);
 645                         }
 646
 647                         nttime = BVAL(twrp->data.data, 0);
 648                         t = nt_time_to_unix(nttime);
 649                         tm = gmtime(&t);
 650
 651                         TALLOC_FREE(fname);
 652                         fname = talloc_asprintf(state,
 653                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 654                                         tm->tm_year + 1900,
 655                                         tm->tm_mon + 1,
 656                                         tm->tm_mday,
 657                                         tm->tm_hour,
 658                                         tm->tm_min,
 659                                         tm->tm_sec,
 660                                         in_name);
 661                         if (tevent_req_nomem(fname, req)) {
 662                                 return tevent_req_post(req, ev);
 663                         }
 664                 }
 665
 666                 if (qfid) {
 667                         if (qfid->data.length != 0) {
 668                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 669                                 return tevent_req_post(req, ev);
 670                         }
 671                 }
 672
 673                 /* these are ignored for SMB2 */
 674                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 675                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 676
 677                 /*
 678                  * For a DFS path the function parse_dfs_path()
 679                  * will do the path processing.
 680                  */
 681
 682                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 683                         /* convert '\\' into '/' */
 684                         status = check_path_syntax(fname);
 685                         if (!NT_STATUS_IS_OK(status)) {
 686                                 tevent_req_nterror(req, status);
 687                                 return tevent_req_post(req, ev);
 688                         }
 689                 }
 690
 691                 status = filename_convert(req,
 692                                           smb1req->conn,
 693                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 694                                           fname,
 695                                           0,
 696                                           NULL,
 697                                           &smb_fname);
 698                 if (!NT_STATUS_IS_OK(status)) {
 699                         tevent_req_nterror(req, status);
 700                         return tevent_req_post(req, ev);
 701                 }
 702
 703                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 704
 705                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 706                                              smb1req,
 707                                              0, /* root_dir_fid */
 708                                              smb_fname,
 709                                              in_desired_access,
 710                                              in_share_access,
 711                                              in_create_disposition,
 712                                              in_create_options,
 713                                              in_file_attributes,
 714                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 715                                              allocation_size,
 716                                              0, /* private_flags */
 717                                              sec_desc,
 718                                              ea_list,
 719                                              &result,
 720                                              &info);
 721                 if (!NT_STATUS_IS_OK(status)) {
 722                         if (open_was_deferred(smb1req->mid)) {
 723                                 return req;
 724                         }
 725                         tevent_req_nterror(req, status);
 726                         return tevent_req_post(req, ev);
 727                 }
 728
 729                 if (mxac) {
 730                         NTTIME last_write_time;
 731
 732                         unix_timespec_to_nt_time(&last_write_time,
 733                                                  result->fsp_name->st.st_ex_mtime);
 734                         if (last_write_time != max_access_time) {
 735                                 uint8_t p[8];
 736                                 uint32_t max_access_granted;
 737                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 738
 739                                 status = smbd_check_open_rights(smb1req->conn,
 740                                                         result->fsp_name,
 741                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 742                                                         &max_access_granted);
 743
 744                                 SIVAL(p, 0, NT_STATUS_V(status));
 745                                 SIVAL(p, 4, max_access_granted);
 746
 747                                 status = smb2_create_blob_add(state,
 748                                                         &out_context_blobs,
 749                                                         SMB2_CREATE_TAG_MXAC,
 750                                                         blob);
 751                                 if (!NT_STATUS_IS_OK(status)) {
 752                                         tevent_req_nterror(req, status);
 753                                         return tevent_req_post(req, ev);
 754                                 }
 755                         }
 756                 }
 757
 758                 if (qfid) {
 759                         uint8_t p[32];
 760                         uint64_t file_index = get_FileIndex(result->conn,
 761                                                         &result->fsp_name->st);
 762                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 763
 764                         ZERO_STRUCT(p);
 765
 766                         /* From conversations with Microsoft engineers at
 767                            the MS plugfest. The first 8 bytes are the "volume index"
 768                            == inode, the second 8 bytes are the "volume id",
 769                            == dev. This will be updated in the SMB2 doc. */
 770                         SBVAL(p, 0, file_index);
 771                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 772
 773                         status = smb2_create_blob_add(state, &out_context_blobs,
 774                                                       SMB2_CREATE_TAG_QFID,
 775                                                       blob);
 776                         if (!NT_STATUS_IS_OK(status)) {
 777                                 tevent_req_nterror(req, status);
 778                                 return tevent_req_post(req, ev);
 779                         }
 780                 }
 781         }
 782
 783         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 784
 785         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 786                 state->out_oplock_level = in_oplock_level;
 787         } else {
 788                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 789         }
 790
 791         if ((in_create_disposition == FILE_SUPERSEDE)
 792             && (info == FILE_WAS_OVERWRITTEN)) {
 793                 state->out_create_action = FILE_WAS_SUPERSEDED;
 794         } else {
 795                 state->out_create_action = info;
 796         }
 797         state->out_file_attributes = dos_mode(result->conn,
 798                                            result->fsp_name);
 799         /* Deal with other possible opens having a modified
 800            write time. JRA. */
 801         ZERO_STRUCT(write_time_ts);
 802         get_file_infos(result->file_id, NULL, &write_time_ts);
 803         if (!null_timespec(write_time_ts)) {
 804                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 805         }
 806
 807         unix_timespec_to_nt_time(&state->out_creation_time,
 808                         get_create_timespec(smb1req->conn, result,
 809                                         result->fsp_name));
 810         unix_timespec_to_nt_time(&state->out_last_access_time,
 811                         result->fsp_name->st.st_ex_atime);
 812         unix_timespec_to_nt_time(&state->out_last_write_time,
 813                         result->fsp_name->st.st_ex_mtime);
 814         unix_timespec_to_nt_time(&state->out_change_time,
 815                         get_change_timespec(smb1req->conn, result,
 816                                         result->fsp_name));
 817         state->out_allocation_size =
 818                         result->fsp_name->st.st_ex_blksize *
 819                         result->fsp_name->st.st_ex_blocks;
 820         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 821         if (state->out_file_attributes == 0) {
 822                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 823         }
 824         state->out_file_id_persistent = result->fnum;
 825         state->out_file_id_volatile = result->fnum;
 826         state->out_context_blobs = out_context_blobs;
 827
 828         tevent_req_done(req);
 829         return tevent_req_post(req, ev);
 830 }
 831
 832 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 833                         TALLOC_CTX *mem_ctx,
 834                         uint8_t *out_oplock_level,
 835                         uint32_t *out_create_action,
 836                         NTTIME *out_creation_time,
 837                         NTTIME *out_last_access_time,
 838                         NTTIME *out_last_write_time,
 839                         NTTIME *out_change_time,
 840                         uint64_t *out_allocation_size,
 841                         uint64_t *out_end_of_file,
 842                         uint32_t *out_file_attributes,
 843                         uint64_t *out_file_id_persistent,
 844                         uint64_t *out_file_id_volatile,
 845                         struct smb2_create_blobs *out_context_blobs)
 846 {
 847         NTSTATUS status;
 848         struct smbd_smb2_create_state *state = tevent_req_data(req,
 849                                                struct smbd_smb2_create_state);
 850
 851         if (tevent_req_is_nterror(req, &status)) {
 852                 tevent_req_received(req);
 853                 return status;
 854         }
 855
 856         *out_oplock_level       = state->out_oplock_level;
 857         *out_create_action      = state->out_create_action;
 858         *out_creation_time      = state->out_creation_time;
 859         *out_last_access_time   = state->out_last_access_time;
 860         *out_last_write_time    = state->out_last_write_time;
 861         *out_change_time        = state->out_change_time;
 862         *out_allocation_size    = state->out_allocation_size;
 863         *out_end_of_file        = state->out_end_of_file;
 864         *out_file_attributes    = state->out_file_attributes;
 865         *out_file_id_persistent = state->out_file_id_persistent;
 866         *out_file_id_volatile   = state->out_file_id_volatile;
 867         *out_context_blobs      = state->out_context_blobs;
 868
 869         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 870
 871         tevent_req_received(req);
 872         return NT_STATUS_OK;
 873 }
 874
 875 /*********************************************************
 876  Code for dealing with deferred opens.
 877 *********************************************************/
 878
 879 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 880                         struct timeval *p_request_time,
 881                         void **pp_state)
 882 {
 883         struct smbd_smb2_create_state *state = NULL;
 884         struct tevent_req *req = NULL;
 885
 886         if (!smb2req) {
 887                 return false;
 888         }
 889         if (!smb2req->async) {
 890                 return false;
 891         }
 892         req = smb2req->subreq;
 893         if (!req) {
 894                 return false;
 895         }
 896         state = tevent_req_data(req, struct smbd_smb2_create_state);
 897         if (!state) {
 898                 return false;
 899         }
 900         if (p_request_time) {
 901                 *p_request_time = state->request_time;
 902         }
 903         if (pp_state) {
 904                 *pp_state = (void *)state->private_data.data;
 905         }
 906         return true;
 907 }
 908
 909 /*********************************************************
 910  Re-process this call early - requested by message or
 911  close.
 912 *********************************************************/
 913
 914 static struct smbd_smb2_request *find_open_smb2req(
 915         struct smbd_server_connection *sconn, uint64_t mid)
 916 {
 917         struct smbd_smb2_request *smb2req;
 918
 919         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 920                 uint64_t message_id;
 921                 if (smb2req->subreq == NULL) {
 922                         /* This message has been processed. */
 923                         continue;
 924                 }
 925                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
 926                         /* This message has been processed. */
 927                         continue;
 928                 }
 929                 message_id = get_mid_from_smb2req(smb2req);
 930                 if (message_id == mid) {
 931                         return smb2req;
 932                 }
 933         }
 934         return NULL;
 935 }
 936
 937 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
 938 {
 939         struct smbd_smb2_create_state *state = NULL;
 940         struct smbd_smb2_request *smb2req;
 941
 942         smb2req = find_open_smb2req(sconn, mid);
 943
 944         if (!smb2req) {
 945                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 946                         (unsigned long long)mid));
 947                 return false;
 948         }
 949         if (!smb2req->subreq) {
 950                 return false;
 951         }
 952         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 953                 return false;
 954         }
 955         state = tevent_req_data(smb2req->subreq,
 956                         struct smbd_smb2_create_state);
 957         if (!state) {
 958                 return false;
 959         }
 960         /* It's not in progress if there's no timeout event. */
 961         if (!state->te) {
 962                 return false;
 963         }
 964
 965         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 966                         (unsigned long long)mid));
 967
 968         return true;
 969 }
 970
 971 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 972                                                         uint64_t mid)
 973 {
 974         struct smbd_smb2_create_state *state = NULL;
 975
 976         if (!smb2req->subreq) {
 977                 return;
 978         }
 979         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 980                 return;
 981         }
 982         state = tevent_req_data(smb2req->subreq,
 983                         struct smbd_smb2_create_state);
 984         if (!state) {
 985                 return;
 986         }
 987
 988         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 989                 "mid %llu\n",
 990                 (unsigned long long)mid ));
 991
 992         /* Ensure we don't have any outstanding timer event. */
 993         TALLOC_FREE(state->te);
 994         /* Ensure we don't have any outstanding immediate event. */
 995         TALLOC_FREE(state->im);
 996 }
 997
 998 void remove_deferred_open_message_smb2(
 999         struct smbd_server_connection *sconn, uint64_t mid)
1000 {
1001         struct smbd_smb2_request *smb2req;
1002
1003         smb2req = find_open_smb2req(sconn, mid);
1004
1005         if (!smb2req) {
1006                 DEBUG(10,("remove_deferred_open_message_smb2: "
1007                         "can't find mid %llu\n",
1008                         (unsigned long long)mid ));
1009                 return;
1010         }
1011         remove_deferred_open_message_smb2_internal(smb2req, mid);
1012 }
1013
1014 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1015                                         struct tevent_immediate *im,
1016                                         void *private_data)
1017 {
1018         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1019                                         struct smbd_smb2_request);
1020         struct smbd_server_connection *sconn = smb2req->sconn;
1021         uint64_t mid = get_mid_from_smb2req(smb2req);
1022         NTSTATUS status;
1023
1024         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1025                 "re-dispatching mid %llu\n",
1026                 (unsigned long long)mid ));
1027
1028         status = smbd_smb2_request_dispatch(smb2req);
1029         if (!NT_STATUS_IS_OK(status)) {
1030                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1031                 return;
1032         }
1033 }
1034
1035 void schedule_deferred_open_message_smb2(
1036         struct smbd_server_connection *sconn, uint64_t mid)
1037 {
1038         struct smbd_smb2_create_state *state = NULL;
1039         struct smbd_smb2_request *smb2req;
1040
1041         smb2req = find_open_smb2req(sconn, mid);
1042
1043         if (!smb2req) {
1044                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1045                         "can't find mid %llu\n",
1046                         (unsigned long long)mid ));
1047                 return;
1048         }
1049         if (!smb2req->subreq) {
1050                 return;
1051         }
1052         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1053                 return;
1054         }
1055         state = tevent_req_data(smb2req->subreq,
1056                         struct smbd_smb2_create_state);
1057         if (!state) {
1058                 return;
1059         }
1060
1061         /* Ensure we don't have any outstanding timer event. */
1062         TALLOC_FREE(state->te);
1063         /* Ensure we don't have any outstanding immediate event. */
1064         TALLOC_FREE(state->im);
1065
1066         /*
1067          * This is subtle. We must null out the callback
1068          * before resheduling, else the first call to
1069          * tevent_req_nterror() causes the _receive()
1070          * function to be called, this causing tevent_req_post()
1071          * to crash.
1072          */
1073         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1074
1075         state->im = tevent_create_immediate(smb2req);
1076         if (!state->im) {
1077                 smbd_server_connection_terminate(smb2req->sconn,
1078                         nt_errstr(NT_STATUS_NO_MEMORY));
1079         }
1080
1081         DEBUG(10,("schedule_deferred_open_message_smb2: "
1082                 "re-processing mid %llu\n",
1083                 (unsigned long long)mid ));
1084
1085         tevent_schedule_immediate(state->im,
1086                         smb2req->sconn->smb2.event_ctx,
1087                         smbd_smb2_create_request_dispatch_immediate,
1088                         smb2req);
1089 }
1090
1091 /*********************************************************
1092  Re-process this call.
1093 *********************************************************/
1094
1095 static void smb2_deferred_open_timer(struct event_context *ev,
1096                                         struct timed_event *te,
1097                                         struct timeval _tval,
1098                                         void *private_data)
1099 {
1100         NTSTATUS status;
1101         struct smbd_smb2_create_state *state = NULL;
1102         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1103                                                 struct smbd_smb2_request);
1104
1105         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1106                 smb2req->current_idx,
1107                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1108
1109         state = tevent_req_data(smb2req->subreq,
1110                         struct smbd_smb2_create_state);
1111         if (!state) {
1112                 return;
1113         }
1114         /*
1115          * Null this out, don't talloc_free. It will
1116          * be talloc_free'd by the tevent library when
1117          * this returns.
1118          */
1119         state->te = NULL;
1120         /* Ensure we don't have any outstanding immediate event. */
1121         TALLOC_FREE(state->im);
1122
1123         /*
1124          * This is subtle. We must null out the callback
1125          * before resheduling, else the first call to
1126          * tevent_req_nterror() causes the _receive()
1127          * function to be called, this causing tevent_req_post()
1128          * to crash.
1129          */
1130         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1131
1132         status = smbd_smb2_request_dispatch(smb2req);
1133
1134         if (!NT_STATUS_IS_OK(status)) {
1135                 smbd_server_connection_terminate(smb2req->sconn,
1136                                 nt_errstr(status));
1137         }
1138 }
1139
1140 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1141 {
1142         struct smbd_smb2_request *smb2req = NULL;
1143         struct smbd_smb2_create_state *state = tevent_req_data(req,
1144                                 struct smbd_smb2_create_state);
1145         uint64_t mid;
1146
1147         if (!state) {
1148                 return false;
1149         }
1150
1151         if (!state->smb2req) {
1152                 return false;
1153         }
1154
1155         smb2req = state->smb2req;
1156         mid = get_mid_from_smb2req(smb2req);
1157
1158         remove_deferred_open_entry(state->id, mid,
1159                                    sconn_server_id(smb2req->sconn));
1160         remove_deferred_open_message_smb2_internal(smb2req, mid);
1161         smb2req->cancelled = true;
1162
1163         tevent_req_done(req);
1164         return true;
1165 }
1166
1167 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1168                                 struct timeval request_time,
1169                                 struct timeval timeout,
1170                                 struct file_id id,
1171                                 char *private_data,
1172                                 size_t priv_len)
1173 {
1174         struct tevent_req *req = NULL;
1175         struct smbd_smb2_create_state *state = NULL;
1176         struct timeval end_time;
1177
1178         if (!smb2req) {
1179                 return false;
1180         }
1181         req = smb2req->subreq;
1182         if (!req) {
1183                 return false;
1184         }
1185         state = tevent_req_data(req, struct smbd_smb2_create_state);
1186         if (!state) {
1187                 return false;
1188         }
1189         state->id = id;
1190         state->request_time = request_time;
1191         state->private_data = data_blob_talloc(state, private_data,
1192                                                 priv_len);
1193         if (!state->private_data.data) {
1194                 return false;
1195         }
1196
1197 #if 1
1198         /* Boo - turns out this isn't what W2K8R2
1199            does. It actually sends the STATUS_PENDING
1200            message followed by the STATUS_SHARING_VIOLATION
1201            message. Surely this means that all open
1202            calls (even on directories) will potentially
1203            fail in a chain.... ? And I've seen directory
1204            opens as the start of a chain. JRA.
1205
1206            Update: 19th May 2010. Talking with Microsoft
1207            engineers at the plugfest this is a bug in
1208            Windows. Re-enable this code.
1209         */
1210         /*
1211          * More subtlety. To match W2K8R2 don't
1212          * send a "gone async" message if it's simply
1213          * a STATUS_SHARING_VIOLATION (short) wait, not
1214          * an oplock break wait. We do this by prematurely
1215          * setting smb2req->async flag.
1216          */
1217         if (timeout.tv_sec < 2) {
1218                 DEBUG(10,("push_deferred_open_message_smb2: "
1219                         "short timer wait (usec = %u). "
1220                         "Don't send async message.\n",
1221                         (unsigned int)timeout.tv_usec ));
1222                 smb2req->async = true;
1223         }
1224 #endif
1225
1226         /* Re-schedule us to retry on timer expiry. */
1227         end_time = timeval_sum(&request_time, &timeout);
1228
1229         DEBUG(10,("push_deferred_open_message_smb2: "
1230                 "timeout at %s\n",
1231                 timeval_string(talloc_tos(),
1232                                 &end_time,
1233                                 true) ));
1234
1235         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1236                                 state,
1237                                 end_time,
1238                                 smb2_deferred_open_timer,
1239                                 smb2req);
1240         if (!state->te) {
1241                 return false;
1242         }
1243
1244         /* allow this request to be canceled */
1245         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1246
1247         return true;
1248 }