source3/smbd/smb2_create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6    Copyright (C) Jeremy Allison 2010
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "printing.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "../libcli/smb/smb_common.h"
  27 #include "../librpc/gen_ndr/ndr_security.h"
  28 #include "../lib/util/tevent_ntstatus.h"
  29 #include "messages.h"
  30 #include "librpc/gen_ndr/open_files.h"
  31 #include "serverid.h"
  32
  33 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  34 {
  35         switch(in_oplock_level) {
  36         case SMB2_OPLOCK_LEVEL_NONE:
  37                 return NO_OPLOCK;
  38         case SMB2_OPLOCK_LEVEL_II:
  39                 return LEVEL_II_OPLOCK;
  40         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  41                 return EXCLUSIVE_OPLOCK;
  42         case SMB2_OPLOCK_LEVEL_BATCH:
  43                 return BATCH_OPLOCK;
  44         case SMB2_OPLOCK_LEVEL_LEASE:
  45                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  46                         "LEASE_OPLOCK_REQUESTED\n"));
  47                 return NO_OPLOCK;
  48         default:
  49                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  50                         "unknown level %u\n",
  51                         (unsigned int)in_oplock_level));
  52                 return NO_OPLOCK;
  53         }
  54 }
  55
  56 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  57 {
  58         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  59                 return SMB2_OPLOCK_LEVEL_BATCH;
  60         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  61                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  62         } else if (oplock_type == LEVEL_II_OPLOCK) {
  63                 /*
  64                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  65                  * this also includes FAKE_LEVEL_II_OPLOCKs
  66                  * which are internal only.
  67                  */
  68                 return SMB2_OPLOCK_LEVEL_II;
  69         } else {
  70                 return SMB2_OPLOCK_LEVEL_NONE;
  71         }
  72 }
  73
  74 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  75                         struct tevent_context *ev,
  76                         struct smbd_smb2_request *smb2req,
  77                         uint8_t in_oplock_level,
  78                         uint32_t in_impersonation_level,
  79                         uint32_t in_desired_access,
  80                         uint32_t in_file_attributes,
  81                         uint32_t in_share_access,
  82                         uint32_t in_create_disposition,
  83                         uint32_t in_create_options,
  84                         const char *in_name,
  85                         struct smb2_create_blobs in_context_blobs);
  86 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  87                         TALLOC_CTX *mem_ctx,
  88                         uint8_t *out_oplock_level,
  89                         uint32_t *out_create_action,
  90                         NTTIME *out_creation_time,
  91                         NTTIME *out_last_access_time,
  92                         NTTIME *out_last_write_time,
  93                         NTTIME *out_change_time,
  94                         uint64_t *out_allocation_size,
  95                         uint64_t *out_end_of_file,
  96                         uint32_t *out_file_attributes,
  97                         uint64_t *out_file_id_persistent,
  98                         uint64_t *out_file_id_volatile,
  99                         struct smb2_create_blobs *out_context_blobs);
 100
 101 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
 102 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
 103 {
 104         const uint8_t *inbody;
 105         const struct iovec *indyniov;
 106         int i = smb2req->current_idx;
 107         uint8_t in_oplock_level;
 108         uint32_t in_impersonation_level;
 109         uint32_t in_desired_access;
 110         uint32_t in_file_attributes;
 111         uint32_t in_share_access;
 112         uint32_t in_create_disposition;
 113         uint32_t in_create_options;
 114         uint16_t in_name_offset;
 115         uint16_t in_name_length;
 116         DATA_BLOB in_name_buffer;
 117         char *in_name_string;
 118         size_t in_name_string_size;
 119         uint32_t name_offset = 0;
 120         uint32_t name_available_length = 0;
 121         uint32_t in_context_offset;
 122         uint32_t in_context_length;
 123         DATA_BLOB in_context_buffer;
 124         struct smb2_create_blobs in_context_blobs;
 125         uint32_t context_offset = 0;
 126         uint32_t context_available_length = 0;
 127         uint32_t dyn_offset;
 128         NTSTATUS status;
 129         bool ok;
 130         struct tevent_req *tsubreq;
 131
 132         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 133         if (!NT_STATUS_IS_OK(status)) {
 134                 return smbd_smb2_request_error(smb2req, status);
 135         }
 136         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 137
 138         in_oplock_level         = CVAL(inbody, 0x03);
 139         in_impersonation_level  = IVAL(inbody, 0x04);
 140         in_desired_access       = IVAL(inbody, 0x18);
 141         in_file_attributes      = IVAL(inbody, 0x1C);
 142         in_share_access         = IVAL(inbody, 0x20);
 143         in_create_disposition   = IVAL(inbody, 0x24);
 144         in_create_options       = IVAL(inbody, 0x28);
 145         in_name_offset          = SVAL(inbody, 0x2C);
 146         in_name_length          = SVAL(inbody, 0x2E);
 147         in_context_offset       = IVAL(inbody, 0x30);
 148         in_context_length       = IVAL(inbody, 0x34);
 149
 150         /*
 151          * First check if the dynamic name and context buffers
 152          * are correctly specified.
 153          *
 154          * Note: That we don't check if the name and context buffers
 155          *       overlap
 156          */
 157
 158         dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
 159
 160         if (in_name_offset == 0 && in_name_length == 0) {
 161                 /* This is ok */
 162                 name_offset = 0;
 163         } else if (in_name_offset < dyn_offset) {
 164                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 165         } else {
 166                 name_offset = in_name_offset - dyn_offset;
 167         }
 168
 169         indyniov = &smb2req->in.vector[i+2];
 170
 171         if (name_offset > indyniov->iov_len) {
 172                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 173         }
 174
 175         name_available_length = indyniov->iov_len - name_offset;
 176
 177         if (in_name_length > name_available_length) {
 178                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 179         }
 180
 181         in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
 182         in_name_buffer.length = in_name_length;
 183
 184         if (in_context_offset == 0 && in_context_length == 0) {
 185                 /* This is ok */
 186                 context_offset = 0;
 187         } else if (in_context_offset < dyn_offset) {
 188                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 189         } else {
 190                 context_offset = in_context_offset - dyn_offset;
 191         }
 192
 193         if (context_offset > indyniov->iov_len) {
 194                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 195         }
 196
 197         context_available_length = indyniov->iov_len - context_offset;
 198
 199         if (in_context_length > context_available_length) {
 200                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 201         }
 202
 203         in_context_buffer.data = (uint8_t *)indyniov->iov_base +
 204                 context_offset;
 205         in_context_buffer.length = in_context_length;
 206
 207         /*
 208          * Now interpret the name and context buffers
 209          */
 210
 211         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 212                                    in_name_buffer.data,
 213                                    in_name_buffer.length,
 214                                    &in_name_string,
 215                                    &in_name_string_size);
 216         if (!ok) {
 217                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 218         }
 219
 220         if (in_name_buffer.length == 0) {
 221                 in_name_string_size = 0;
 222         }
 223
 224         if (strlen(in_name_string) != in_name_string_size) {
 225                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 226         }
 227
 228         ZERO_STRUCT(in_context_blobs);
 229         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 230         if (!NT_STATUS_IS_OK(status)) {
 231                 return smbd_smb2_request_error(smb2req, status);
 232         }
 233
 234         tsubreq = smbd_smb2_create_send(smb2req,
 235                                        smb2req->sconn->ev_ctx,
 236                                        smb2req,
 237                                        in_oplock_level,
 238                                        in_impersonation_level,
 239                                        in_desired_access,
 240                                        in_file_attributes,
 241                                        in_share_access,
 242                                        in_create_disposition,
 243                                        in_create_options,
 244                                        in_name_string,
 245                                        in_context_blobs);
 246         if (tsubreq == NULL) {
 247                 smb2req->subreq = NULL;
 248                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 249         }
 250         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 251
 252         /*
 253          * For now we keep the logic that we do not send STATUS_PENDING
 254          * for sharing violations, so we just wait 2 seconds.
 255          *
 256          * TODO: we need more tests for this.
 257          */
 258         return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
 259 }
 260
 261 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 262 {
 263         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 264         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 265 }
 266
 267 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 268 {
 269         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 270                                         struct smbd_smb2_request);
 271         DATA_BLOB outbody;
 272         DATA_BLOB outdyn;
 273         uint8_t out_oplock_level = 0;
 274         uint32_t out_create_action = 0;
 275         NTTIME out_creation_time = 0;
 276         NTTIME out_last_access_time = 0;
 277         NTTIME out_last_write_time = 0;
 278         NTTIME out_change_time = 0;
 279         uint64_t out_allocation_size = 0;
 280         uint64_t out_end_of_file = 0;
 281         uint32_t out_file_attributes = 0;
 282         uint64_t out_file_id_persistent = 0;
 283         uint64_t out_file_id_volatile = 0;
 284         struct smb2_create_blobs out_context_blobs;
 285         DATA_BLOB out_context_buffer;
 286         uint16_t out_context_buffer_offset = 0;
 287         NTSTATUS status;
 288         NTSTATUS error; /* transport error */
 289
 290         if (smb2req->cancelled) {
 291                 uint64_t mid = get_mid_from_smb2req(smb2req);
 292                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 293                         (unsigned long long)mid ));
 294                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 295                 if (!NT_STATUS_IS_OK(error)) {
 296                         smbd_server_connection_terminate(smb2req->sconn,
 297                                 nt_errstr(error));
 298                         return;
 299                 }
 300                 return;
 301         }
 302
 303         status = smbd_smb2_create_recv(tsubreq,
 304                                        smb2req,
 305                                        &out_oplock_level,
 306                                        &out_create_action,
 307                                        &out_creation_time,
 308                                        &out_last_access_time,
 309                                        &out_last_write_time,
 310                                        &out_change_time,
 311                                        &out_allocation_size,
 312                                        &out_end_of_file,
 313                                        &out_file_attributes,
 314                                        &out_file_id_persistent,
 315                                        &out_file_id_volatile,
 316                                        &out_context_blobs);
 317         if (!NT_STATUS_IS_OK(status)) {
 318                 error = smbd_smb2_request_error(smb2req, status);
 319                 if (!NT_STATUS_IS_OK(error)) {
 320                         smbd_server_connection_terminate(smb2req->sconn,
 321                                                          nt_errstr(error));
 322                         return;
 323                 }
 324                 return;
 325         }
 326
 327         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 328         if (!NT_STATUS_IS_OK(status)) {
 329                 error = smbd_smb2_request_error(smb2req, status);
 330                 if (!NT_STATUS_IS_OK(error)) {
 331                         smbd_server_connection_terminate(smb2req->sconn,
 332                                                          nt_errstr(error));
 333                         return;
 334                 }
 335                 return;
 336         }
 337
 338         if (out_context_buffer.length > 0) {
 339                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 340         }
 341
 342         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 343         if (outbody.data == NULL) {
 344                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 345                 if (!NT_STATUS_IS_OK(error)) {
 346                         smbd_server_connection_terminate(smb2req->sconn,
 347                                                          nt_errstr(error));
 348                         return;
 349                 }
 350                 return;
 351         }
 352
 353         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 354         SCVAL(outbody.data, 0x02,
 355               out_oplock_level);                /* oplock level */
 356         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 357         SIVAL(outbody.data, 0x04,
 358               out_create_action);               /* create action */
 359         SBVAL(outbody.data, 0x08,
 360               out_creation_time);               /* creation time */
 361         SBVAL(outbody.data, 0x10,
 362               out_last_access_time);            /* last access time */
 363         SBVAL(outbody.data, 0x18,
 364               out_last_write_time);             /* last write time */
 365         SBVAL(outbody.data, 0x20,
 366               out_change_time);                 /* change time */
 367         SBVAL(outbody.data, 0x28,
 368               out_allocation_size);             /* allocation size */
 369         SBVAL(outbody.data, 0x30,
 370               out_end_of_file);                 /* end of file */
 371         SIVAL(outbody.data, 0x38,
 372               out_file_attributes);             /* file attributes */
 373         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 374         SBVAL(outbody.data, 0x40,
 375               out_file_id_persistent);          /* file id (persistent) */
 376         SBVAL(outbody.data, 0x48,
 377               out_file_id_volatile);            /* file id (volatile) */
 378         SIVAL(outbody.data, 0x50,
 379               out_context_buffer_offset);       /* create contexts offset */
 380         SIVAL(outbody.data, 0x54,
 381               out_context_buffer.length);       /* create contexts length */
 382
 383         outdyn = out_context_buffer;
 384
 385         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 386         if (!NT_STATUS_IS_OK(error)) {
 387                 smbd_server_connection_terminate(smb2req->sconn,
 388                                                  nt_errstr(error));
 389                 return;
 390         }
 391 }
 392
 393 static NTSTATUS smb2_create_durable_reconnect(struct smbXsrv_open_global0 *global,
 394                                               TALLOC_CTX *mem_ctx,
 395                                               files_struct **fsp)
 396 {
 397         struct share_mode_lock *sharemode_lock;
 398
 399         /* 1. check entry in locking.tdb */
 400
 401         /*
 402          * TODO: need to use different fetch function
 403          * parse_share_modes currently checks for serverid_exists
 404          * possibilites:
 405          * - adapt fetch_share_mode / parse_share_modes to honour durable
 406          *   (i.e. not make share mode invalid if server does not exist for
 407          *    durable)
 408          */
 409         sharemode_lock = fetch_share_mode_unlocked(mem_ctx, global->backend_file_id);
 410         if (sharemode_lock == NULL) {
 411                 /* TODO: use/create other fetch func with better error code */
 412                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 413         }
 414
 415         if (sharemode_lock->data->num_share_modes == 0) {
 416                 /* should not happen? internal error? */
 417                 return NT_STATUS_INTERNAL_DB_ERROR;
 418         }
 419
 420         if (sharemode_lock->data->num_share_modes > 1) {
 421                 /* can't be durable if there is more than one handle on the file */
 422                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 423         }
 424
 425         if (serverid_exists(&sharemode_lock->data->share_modes[0].pid))  {
 426                 /*
 427                  * server still exists
 428                  * TOD: check whether session exists?...
 429                  */
 430                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 431         }
 432
 433         /* 2. proceed with opening file */
 434         return NT_STATUS_NOT_IMPLEMENTED;
 435 }
 436
 437 struct smbd_smb2_create_state {
 438         struct smbd_smb2_request *smb2req;
 439         struct smb_request *smb1req;
 440         struct timed_event *te;
 441         struct tevent_immediate *im;
 442         struct timeval request_time;
 443         struct file_id id;
 444         DATA_BLOB private_data;
 445         uint8_t out_oplock_level;
 446         uint32_t out_create_action;
 447         NTTIME out_creation_time;
 448         NTTIME out_last_access_time;
 449         NTTIME out_last_write_time;
 450         NTTIME out_change_time;
 451         uint64_t out_allocation_size;
 452         uint64_t out_end_of_file;
 453         uint32_t out_file_attributes;
 454         uint64_t out_file_id_persistent;
 455         uint64_t out_file_id_volatile;
 456         struct smb2_create_blobs out_context_blobs;
 457 };
 458
 459 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 460                         struct tevent_context *ev,
 461                         struct smbd_smb2_request *smb2req,
 462                         uint8_t in_oplock_level,
 463                         uint32_t in_impersonation_level,
 464                         uint32_t in_desired_access,
 465                         uint32_t in_file_attributes,
 466                         uint32_t in_share_access,
 467                         uint32_t in_create_disposition,
 468                         uint32_t in_create_options,
 469                         const char *in_name,
 470                         struct smb2_create_blobs in_context_blobs)
 471 {
 472         struct tevent_req *req = NULL;
 473         struct smbd_smb2_create_state *state = NULL;
 474         NTSTATUS status;
 475         struct smb_request *smb1req = NULL;
 476         files_struct *result = NULL;
 477         int info;
 478         struct timespec write_time_ts;
 479         struct smb2_create_blobs out_context_blobs;
 480         int requested_oplock_level;
 481
 482         ZERO_STRUCT(out_context_blobs);
 483
 484         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 485                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 486         } else {
 487                 requested_oplock_level = in_oplock_level;
 488         }
 489
 490
 491         if (smb2req->subreq == NULL) {
 492                 /* New create call. */
 493                 req = tevent_req_create(mem_ctx, &state,
 494                                 struct smbd_smb2_create_state);
 495                 if (req == NULL) {
 496                         return NULL;
 497                 }
 498                 state->smb2req = smb2req;
 499
 500                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 501                 if (tevent_req_nomem(smb1req, req)) {
 502                         return tevent_req_post(req, ev);
 503                 }
 504                 state->smb1req = smb1req;
 505                 smb2req->subreq = req;
 506                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 507                         in_name));
 508         } else {
 509                 /* Re-entrant create call. */
 510                 req = smb2req->subreq;
 511                 state = tevent_req_data(req,
 512                                 struct smbd_smb2_create_state);
 513                 smb1req = state->smb1req;
 514                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 515                         in_name ));
 516         }
 517
 518         if (IS_IPC(smb1req->conn)) {
 519                 const char *pipe_name = in_name;
 520
 521                 if (!lp_nt_pipe_support()) {
 522                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 523                         return tevent_req_post(req, ev);
 524                 }
 525
 526                 /* Strip \\ off the name. */
 527                 if (pipe_name[0] == '\\') {
 528                         pipe_name++;
 529                 }
 530
 531                 status = open_np_file(smb1req, pipe_name, &result);
 532                 if (!NT_STATUS_IS_OK(status)) {
 533                         tevent_req_nterror(req, status);
 534                         return tevent_req_post(req, ev);
 535                 }
 536                 info = FILE_WAS_OPENED;
 537         } else if (CAN_PRINT(smb1req->conn)) {
 538                 status = file_new(smb1req, smb1req->conn, &result);
 539                 if(!NT_STATUS_IS_OK(status)) {
 540                         tevent_req_nterror(req, status);
 541                         return tevent_req_post(req, ev);
 542                 }
 543
 544                 status = print_spool_open(result, in_name,
 545                                           smb1req->vuid);
 546                 if (!NT_STATUS_IS_OK(status)) {
 547                         file_free(smb1req, result);
 548                         tevent_req_nterror(req, status);
 549                         return tevent_req_post(req, ev);
 550                 }
 551                 info = FILE_WAS_CREATED;
 552         } else {
 553                 char *fname;
 554                 struct smb_filename *smb_fname = NULL;
 555                 struct smb2_create_blob *exta = NULL;
 556                 struct ea_list *ea_list = NULL;
 557                 struct smb2_create_blob *mxac = NULL;
 558                 NTTIME max_access_time = 0;
 559                 struct smb2_create_blob *secd = NULL;
 560                 struct security_descriptor *sec_desc = NULL;
 561                 struct smb2_create_blob *dhnq = NULL;
 562                 struct smb2_create_blob *dhnc = NULL;
 563                 struct smb2_create_blob *alsi = NULL;
 564                 uint64_t allocation_size = 0;
 565                 struct smb2_create_blob *twrp = NULL;
 566                 struct smb2_create_blob *qfid = NULL;
 567
 568                 exta = smb2_create_blob_find(&in_context_blobs,
 569                                              SMB2_CREATE_TAG_EXTA);
 570                 mxac = smb2_create_blob_find(&in_context_blobs,
 571                                              SMB2_CREATE_TAG_MXAC);
 572                 secd = smb2_create_blob_find(&in_context_blobs,
 573                                              SMB2_CREATE_TAG_SECD);
 574                 dhnq = smb2_create_blob_find(&in_context_blobs,
 575                                              SMB2_CREATE_TAG_DHNQ);
 576                 dhnc = smb2_create_blob_find(&in_context_blobs,
 577                                              SMB2_CREATE_TAG_DHNC);
 578                 alsi = smb2_create_blob_find(&in_context_blobs,
 579                                              SMB2_CREATE_TAG_ALSI);
 580                 twrp = smb2_create_blob_find(&in_context_blobs,
 581                                              SMB2_CREATE_TAG_TWRP);
 582                 qfid = smb2_create_blob_find(&in_context_blobs,
 583                                              SMB2_CREATE_TAG_QFID);
 584
 585                 fname = talloc_strdup(state, in_name);
 586                 if (tevent_req_nomem(fname, req)) {
 587                         return tevent_req_post(req, ev);
 588                 }
 589
 590                 if (exta) {
 591                         if (dhnc) {
 592                                 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
 593                                 return tevent_req_post(req, ev);
 594                         }
 595
 596                         ea_list = read_nttrans_ea_list(mem_ctx,
 597                                 (const char *)exta->data.data, exta->data.length);
 598                         if (!ea_list) {
 599                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 600                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 601                                 return tevent_req_post(req, ev);
 602                         }
 603                 }
 604
 605                 if (mxac) {
 606                         if (dhnc) {
 607                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 608                                 return tevent_req_post(req, ev);
 609                         }
 610
 611                         if (mxac->data.length == 0) {
 612                                 max_access_time = 0;
 613                         } else if (mxac->data.length == 8) {
 614                                 max_access_time = BVAL(mxac->data.data, 0);
 615                         } else {
 616                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 617                                 return tevent_req_post(req, ev);
 618                         }
 619                 }
 620
 621                 if (secd) {
 622                         enum ndr_err_code ndr_err;
 623
 624                         if (dhnc) {
 625                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 626                                 return tevent_req_post(req, ev);
 627                         }
 628
 629                         sec_desc = talloc_zero(state, struct security_descriptor);
 630                         if (tevent_req_nomem(sec_desc, req)) {
 631                                 return tevent_req_post(req, ev);
 632                         }
 633
 634                         ndr_err = ndr_pull_struct_blob(&secd->data,
 635                                 sec_desc, sec_desc,
 636                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 637                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 638                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 639                                          ndr_errstr(ndr_err)));
 640                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 641                                 return tevent_req_post(req, ev);
 642                         }
 643                 }
 644
 645                 if (dhnq) {
 646                         if (dhnc) {
 647                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 648                                 return tevent_req_post(req, ev);
 649                         }
 650
 651                         if (dhnq->data.length != 16) {
 652                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 653                                 return tevent_req_post(req, ev);
 654                         }
 655                         /*
 656                          * durable handle request is processed below.
 657                          */
 658                 }
 659
 660                 if (dhnc) {
 661                         uint64_t persistent_id;
 662                         struct smbXsrv_open_global0 *global = NULL;
 663
 664                         if (dhnc->data.length != 16) {
 665                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 666                                 return tevent_req_post(req, ev);
 667                         }
 668
 669                         persistent_id = BVAL(dhnc->data.data, 0);
 670                         status = smb2srv_open_global_lookup(
 671                                         &smb2req->sconn->conn->open_table,
 672                                         persistent_id,
 673                                         mem_ctx, // TODO: correct mem ctx???
 674                                         &global);
 675
 676                         if (!NT_STATUS_IS_OK(status)) {
 677                                 tevent_req_nterror(req, status);
 678                                 return tevent_req_post(req, ev);
 679                         }
 680
 681                         /* TODO: needed? or is successful global_lookup enough?) */
 682
 683                         if (!global->durable) {
 684                                 tevent_req_nterror(req,
 685                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 686                                 return tevent_req_post(req, ev);
 687                         }
 688
 689                         // TODO: implement this function..
 690                         status = smb2_create_durable_reconnect(global, mem_ctx, &result);
 691
 692                         if (!NT_STATUS_IS_OK(status)) {
 693                                 tevent_req_nterror(req, status);
 694                                 return tevent_req_post(req, ev);
 695                         }
 696
 697                         // TODO: response construction
 698
 699                         tevent_req_done(req);
 700                         return tevent_req_post(req, ev);
 701                 }
 702
 703                 if (alsi) {
 704                         if (dhnc) {
 705                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 706                                 return tevent_req_post(req, ev);
 707                         }
 708
 709                         if (alsi->data.length != 8) {
 710                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 711                                 return tevent_req_post(req, ev);
 712                         }
 713                         allocation_size = BVAL(alsi->data.data, 0);
 714                 }
 715
 716                 if (twrp) {
 717                         NTTIME nttime;
 718                         time_t t;
 719                         struct tm *tm;
 720
 721                         if (dhnc) {
 722                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 723                                 return tevent_req_post(req, ev);
 724                         }
 725
 726                         if (twrp->data.length != 8) {
 727                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 728                                 return tevent_req_post(req, ev);
 729                         }
 730
 731                         nttime = BVAL(twrp->data.data, 0);
 732                         t = nt_time_to_unix(nttime);
 733                         tm = gmtime(&t);
 734
 735                         TALLOC_FREE(fname);
 736                         fname = talloc_asprintf(state,
 737                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 738                                         tm->tm_year + 1900,
 739                                         tm->tm_mon + 1,
 740                                         tm->tm_mday,
 741                                         tm->tm_hour,
 742                                         tm->tm_min,
 743                                         tm->tm_sec,
 744                                         in_name);
 745                         if (tevent_req_nomem(fname, req)) {
 746                                 return tevent_req_post(req, ev);
 747                         }
 748                 }
 749
 750                 if (qfid) {
 751                         if (qfid->data.length != 0) {
 752                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 753                                 return tevent_req_post(req, ev);
 754                         }
 755                 }
 756
 757                 /* these are ignored for SMB2 */
 758                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 759                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 760
 761                 /*
 762                  * For a DFS path the function parse_dfs_path()
 763                  * will do the path processing.
 764                  */
 765
 766                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 767                         /* convert '\\' into '/' */
 768                         status = check_path_syntax(fname);
 769                         if (!NT_STATUS_IS_OK(status)) {
 770                                 tevent_req_nterror(req, status);
 771                                 return tevent_req_post(req, ev);
 772                         }
 773                 }
 774
 775                 status = filename_convert(req,
 776                                           smb1req->conn,
 777                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 778                                           fname,
 779                                           0,
 780                                           NULL,
 781                                           &smb_fname);
 782                 if (!NT_STATUS_IS_OK(status)) {
 783                         tevent_req_nterror(req, status);
 784                         return tevent_req_post(req, ev);
 785                 }
 786
 787                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 788
 789                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 790                                              smb1req,
 791                                              0, /* root_dir_fid */
 792                                              smb_fname,
 793                                              in_desired_access,
 794                                              in_share_access,
 795                                              in_create_disposition,
 796                                              in_create_options,
 797                                              in_file_attributes,
 798                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 799                                              allocation_size,
 800                                              0, /* private_flags */
 801                                              sec_desc,
 802                                              ea_list,
 803                                              &result,
 804                                              &info);
 805                 if (!NT_STATUS_IS_OK(status)) {
 806                         if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
 807                                 return req;
 808                         }
 809                         tevent_req_nterror(req, status);
 810                         return tevent_req_post(req, ev);
 811                 }
 812
 813                 if (mxac) {
 814                         NTTIME last_write_time;
 815
 816                         unix_timespec_to_nt_time(&last_write_time,
 817                                                  result->fsp_name->st.st_ex_mtime);
 818                         if (last_write_time != max_access_time) {
 819                                 uint8_t p[8];
 820                                 uint32_t max_access_granted;
 821                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 822
 823                                 status = smbd_calculate_access_mask(smb1req->conn,
 824                                                         result->fsp_name,
 825                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 826                                                         &max_access_granted);
 827
 828                                 SIVAL(p, 0, NT_STATUS_V(status));
 829                                 SIVAL(p, 4, max_access_granted);
 830
 831                                 status = smb2_create_blob_add(state,
 832                                                         &out_context_blobs,
 833                                                         SMB2_CREATE_TAG_MXAC,
 834                                                         blob);
 835                                 if (!NT_STATUS_IS_OK(status)) {
 836                                         tevent_req_nterror(req, status);
 837                                         return tevent_req_post(req, ev);
 838                                 }
 839                         }
 840                 }
 841
 842                 if (dhnq && BATCH_OPLOCK_TYPE(result->oplock_type)) {
 843                         uint8_t p[8];
 844                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 845
 846                         result->smbXsrv->global->backend_file_id = result->file_id;
 847                         result->smbXsrv->global->durable = true;
 848
 849                         status = smbXsrv_open_update(result->smbXsrv);
 850                         if (!NT_STATUS_IS_OK(status)) {
 851                                 tevent_req_nterror(req, status);
 852                                 return tevent_req_post(req, ev);
 853                         }
 854
 855                         ZERO_STRUCT(p);
 856
 857                         status = smb2_create_blob_add(state, &out_context_blobs,
 858                                                       SMB2_CREATE_TAG_DHNQ,
 859                                                       blob);
 860                         if (!NT_STATUS_IS_OK(status)) {
 861                                 tevent_req_nterror(req, status);
 862                                 return tevent_req_post(req, ev);
 863                         }
 864                 }
 865
 866                 if (qfid) {
 867                         uint8_t p[32];
 868                         uint64_t file_index = get_FileIndex(result->conn,
 869                                                         &result->fsp_name->st);
 870                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 871
 872                         ZERO_STRUCT(p);
 873
 874                         /* From conversations with Microsoft engineers at
 875                            the MS plugfest. The first 8 bytes are the "volume index"
 876                            == inode, the second 8 bytes are the "volume id",
 877                            == dev. This will be updated in the SMB2 doc. */
 878                         SBVAL(p, 0, file_index);
 879                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 880
 881                         status = smb2_create_blob_add(state, &out_context_blobs,
 882                                                       SMB2_CREATE_TAG_QFID,
 883                                                       blob);
 884                         if (!NT_STATUS_IS_OK(status)) {
 885                                 tevent_req_nterror(req, status);
 886                                 return tevent_req_post(req, ev);
 887                         }
 888                 }
 889         }
 890
 891         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 892
 893         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 894                 state->out_oplock_level = in_oplock_level;
 895         } else {
 896                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 897         }
 898
 899         if ((in_create_disposition == FILE_SUPERSEDE)
 900             && (info == FILE_WAS_OVERWRITTEN)) {
 901                 state->out_create_action = FILE_WAS_SUPERSEDED;
 902         } else {
 903                 state->out_create_action = info;
 904         }
 905         state->out_file_attributes = dos_mode(result->conn,
 906                                            result->fsp_name);
 907         /* Deal with other possible opens having a modified
 908            write time. JRA. */
 909         ZERO_STRUCT(write_time_ts);
 910         get_file_infos(result->file_id, 0, NULL, &write_time_ts);
 911         if (!null_timespec(write_time_ts)) {
 912                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 913         }
 914
 915         unix_timespec_to_nt_time(&state->out_creation_time,
 916                         get_create_timespec(smb1req->conn, result,
 917                                         result->fsp_name));
 918         unix_timespec_to_nt_time(&state->out_last_access_time,
 919                         result->fsp_name->st.st_ex_atime);
 920         unix_timespec_to_nt_time(&state->out_last_write_time,
 921                         result->fsp_name->st.st_ex_mtime);
 922         unix_timespec_to_nt_time(&state->out_change_time,
 923                         get_change_timespec(smb1req->conn, result,
 924                                         result->fsp_name));
 925         state->out_allocation_size =
 926                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
 927                                                &(result->fsp_name->st));
 928         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 929         if (state->out_file_attributes == 0) {
 930                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 931         }
 932
 933         state->out_file_id_persistent = result->smbXsrv->global->open_persistent_id;
 934         state->out_file_id_volatile = result->smbXsrv->global->open_volatile_id;
 935         state->out_context_blobs = out_context_blobs;
 936
 937         tevent_req_done(req);
 938         return tevent_req_post(req, ev);
 939 }
 940
 941 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 942                         TALLOC_CTX *mem_ctx,
 943                         uint8_t *out_oplock_level,
 944                         uint32_t *out_create_action,
 945                         NTTIME *out_creation_time,
 946                         NTTIME *out_last_access_time,
 947                         NTTIME *out_last_write_time,
 948                         NTTIME *out_change_time,
 949                         uint64_t *out_allocation_size,
 950                         uint64_t *out_end_of_file,
 951                         uint32_t *out_file_attributes,
 952                         uint64_t *out_file_id_persistent,
 953                         uint64_t *out_file_id_volatile,
 954                         struct smb2_create_blobs *out_context_blobs)
 955 {
 956         NTSTATUS status;
 957         struct smbd_smb2_create_state *state = tevent_req_data(req,
 958                                                struct smbd_smb2_create_state);
 959
 960         if (tevent_req_is_nterror(req, &status)) {
 961                 tevent_req_received(req);
 962                 return status;
 963         }
 964
 965         *out_oplock_level       = state->out_oplock_level;
 966         *out_create_action      = state->out_create_action;
 967         *out_creation_time      = state->out_creation_time;
 968         *out_last_access_time   = state->out_last_access_time;
 969         *out_last_write_time    = state->out_last_write_time;
 970         *out_change_time        = state->out_change_time;
 971         *out_allocation_size    = state->out_allocation_size;
 972         *out_end_of_file        = state->out_end_of_file;
 973         *out_file_attributes    = state->out_file_attributes;
 974         *out_file_id_persistent = state->out_file_id_persistent;
 975         *out_file_id_volatile   = state->out_file_id_volatile;
 976         *out_context_blobs      = state->out_context_blobs;
 977
 978         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 979
 980         tevent_req_received(req);
 981         return NT_STATUS_OK;
 982 }
 983
 984 /*********************************************************
 985  Code for dealing with deferred opens.
 986 *********************************************************/
 987
 988 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 989                         struct timeval *p_request_time,
 990                         void **pp_state)
 991 {
 992         struct smbd_smb2_create_state *state = NULL;
 993         struct tevent_req *req = NULL;
 994
 995         if (!smb2req) {
 996                 return false;
 997         }
 998         if (smb2req->async_te == NULL) {
 999                 return false;
1000         }
1001         req = smb2req->subreq;
1002         if (!req) {
1003                 return false;
1004         }
1005         state = tevent_req_data(req, struct smbd_smb2_create_state);
1006         if (!state) {
1007                 return false;
1008         }
1009         if (p_request_time) {
1010                 *p_request_time = state->request_time;
1011         }
1012         if (pp_state) {
1013                 *pp_state = (void *)state->private_data.data;
1014         }
1015         return true;
1016 }
1017
1018 /*********************************************************
1019  Re-process this call early - requested by message or
1020  close.
1021 *********************************************************/
1022
1023 static struct smbd_smb2_request *find_open_smb2req(
1024         struct smbd_server_connection *sconn, uint64_t mid)
1025 {
1026         struct smbd_smb2_request *smb2req;
1027
1028         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1029                 uint64_t message_id;
1030                 if (smb2req->subreq == NULL) {
1031                         /* This message has been processed. */
1032                         continue;
1033                 }
1034                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1035                         /* This message has been processed. */
1036                         continue;
1037                 }
1038                 message_id = get_mid_from_smb2req(smb2req);
1039                 if (message_id == mid) {
1040                         return smb2req;
1041                 }
1042         }
1043         return NULL;
1044 }
1045
1046 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1047 {
1048         struct smbd_smb2_create_state *state = NULL;
1049         struct smbd_smb2_request *smb2req;
1050
1051         smb2req = find_open_smb2req(sconn, mid);
1052
1053         if (!smb2req) {
1054                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1055                         (unsigned long long)mid));
1056                 return false;
1057         }
1058         if (!smb2req->subreq) {
1059                 return false;
1060         }
1061         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1062                 return false;
1063         }
1064         state = tevent_req_data(smb2req->subreq,
1065                         struct smbd_smb2_create_state);
1066         if (!state) {
1067                 return false;
1068         }
1069         /* It's not in progress if there's no timeout event. */
1070         if (!state->te) {
1071                 return false;
1072         }
1073
1074         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1075                         (unsigned long long)mid));
1076
1077         return true;
1078 }
1079
1080 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1081                                                         uint64_t mid)
1082 {
1083         struct smbd_smb2_create_state *state = NULL;
1084
1085         if (!smb2req->subreq) {
1086                 return;
1087         }
1088         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1089                 return;
1090         }
1091         state = tevent_req_data(smb2req->subreq,
1092                         struct smbd_smb2_create_state);
1093         if (!state) {
1094                 return;
1095         }
1096
1097         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1098                 "mid %llu\n",
1099                 (unsigned long long)mid ));
1100
1101         /* Ensure we don't have any outstanding timer event. */
1102         TALLOC_FREE(state->te);
1103         /* Ensure we don't have any outstanding immediate event. */
1104         TALLOC_FREE(state->im);
1105 }
1106
1107 void remove_deferred_open_message_smb2(
1108         struct smbd_server_connection *sconn, uint64_t mid)
1109 {
1110         struct smbd_smb2_request *smb2req;
1111
1112         smb2req = find_open_smb2req(sconn, mid);
1113
1114         if (!smb2req) {
1115                 DEBUG(10,("remove_deferred_open_message_smb2: "
1116                         "can't find mid %llu\n",
1117                         (unsigned long long)mid ));
1118                 return;
1119         }
1120         remove_deferred_open_message_smb2_internal(smb2req, mid);
1121 }
1122
1123 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1124                                         struct tevent_immediate *im,
1125                                         void *private_data)
1126 {
1127         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1128                                         struct smbd_smb2_request);
1129         struct smbd_server_connection *sconn = smb2req->sconn;
1130         uint64_t mid = get_mid_from_smb2req(smb2req);
1131         NTSTATUS status;
1132
1133         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1134                 "re-dispatching mid %llu\n",
1135                 (unsigned long long)mid ));
1136
1137         status = smbd_smb2_request_dispatch(smb2req);
1138         if (!NT_STATUS_IS_OK(status)) {
1139                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1140                 return;
1141         }
1142 }
1143
1144 void schedule_deferred_open_message_smb2(
1145         struct smbd_server_connection *sconn, uint64_t mid)
1146 {
1147         struct smbd_smb2_create_state *state = NULL;
1148         struct smbd_smb2_request *smb2req;
1149
1150         smb2req = find_open_smb2req(sconn, mid);
1151
1152         if (!smb2req) {
1153                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1154                         "can't find mid %llu\n",
1155                         (unsigned long long)mid ));
1156                 return;
1157         }
1158         if (!smb2req->subreq) {
1159                 return;
1160         }
1161         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1162                 return;
1163         }
1164         state = tevent_req_data(smb2req->subreq,
1165                         struct smbd_smb2_create_state);
1166         if (!state) {
1167                 return;
1168         }
1169
1170         /* Ensure we don't have any outstanding timer event. */
1171         TALLOC_FREE(state->te);
1172         /* Ensure we don't have any outstanding immediate event. */
1173         TALLOC_FREE(state->im);
1174
1175         /*
1176          * This is subtle. We must null out the callback
1177          * before resheduling, else the first call to
1178          * tevent_req_nterror() causes the _receive()
1179          * function to be called, this causing tevent_req_post()
1180          * to crash.
1181          */
1182         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1183
1184         state->im = tevent_create_immediate(smb2req);
1185         if (!state->im) {
1186                 smbd_server_connection_terminate(smb2req->sconn,
1187                         nt_errstr(NT_STATUS_NO_MEMORY));
1188                 return;
1189         }
1190
1191         DEBUG(10,("schedule_deferred_open_message_smb2: "
1192                 "re-processing mid %llu\n",
1193                 (unsigned long long)mid ));
1194
1195         tevent_schedule_immediate(state->im,
1196                         smb2req->sconn->ev_ctx,
1197                         smbd_smb2_create_request_dispatch_immediate,
1198                         smb2req);
1199 }
1200
1201 /*********************************************************
1202  Re-process this call.
1203 *********************************************************/
1204
1205 static void smb2_deferred_open_timer(struct event_context *ev,
1206                                         struct timed_event *te,
1207                                         struct timeval _tval,
1208                                         void *private_data)
1209 {
1210         NTSTATUS status;
1211         struct smbd_smb2_create_state *state = NULL;
1212         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1213                                                 struct smbd_smb2_request);
1214
1215         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1216                 smb2req->current_idx,
1217                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1218
1219         state = tevent_req_data(smb2req->subreq,
1220                         struct smbd_smb2_create_state);
1221         if (!state) {
1222                 return;
1223         }
1224         /*
1225          * Null this out, don't talloc_free. It will
1226          * be talloc_free'd by the tevent library when
1227          * this returns.
1228          */
1229         state->te = NULL;
1230         /* Ensure we don't have any outstanding immediate event. */
1231         TALLOC_FREE(state->im);
1232
1233         /*
1234          * This is subtle. We must null out the callback
1235          * before resheduling, else the first call to
1236          * tevent_req_nterror() causes the _receive()
1237          * function to be called, this causing tevent_req_post()
1238          * to crash.
1239          */
1240         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1241
1242         status = smbd_smb2_request_dispatch(smb2req);
1243
1244         if (!NT_STATUS_IS_OK(status)) {
1245                 smbd_server_connection_terminate(smb2req->sconn,
1246                                 nt_errstr(status));
1247         }
1248 }
1249
1250 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1251 {
1252         struct smbd_smb2_request *smb2req = NULL;
1253         struct smbd_smb2_create_state *state = tevent_req_data(req,
1254                                 struct smbd_smb2_create_state);
1255         uint64_t mid;
1256
1257         if (!state) {
1258                 return false;
1259         }
1260
1261         if (!state->smb2req) {
1262                 return false;
1263         }
1264
1265         smb2req = state->smb2req;
1266         mid = get_mid_from_smb2req(smb2req);
1267
1268         remove_deferred_open_entry(state->id, mid,
1269                                    messaging_server_id(smb2req->sconn->msg_ctx));
1270         remove_deferred_open_message_smb2_internal(smb2req, mid);
1271         smb2req->cancelled = true;
1272
1273         tevent_req_done(req);
1274         return true;
1275 }
1276
1277 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1278                                 struct timeval request_time,
1279                                 struct timeval timeout,
1280                                 struct file_id id,
1281                                 char *private_data,
1282                                 size_t priv_len)
1283 {
1284         struct tevent_req *req = NULL;
1285         struct smbd_smb2_create_state *state = NULL;
1286         struct timeval end_time;
1287
1288         if (!smb2req) {
1289                 return false;
1290         }
1291         req = smb2req->subreq;
1292         if (!req) {
1293                 return false;
1294         }
1295         state = tevent_req_data(req, struct smbd_smb2_create_state);
1296         if (!state) {
1297                 return false;
1298         }
1299         state->id = id;
1300         state->request_time = request_time;
1301         state->private_data = data_blob_talloc(state, private_data,
1302                                                 priv_len);
1303         if (!state->private_data.data) {
1304                 return false;
1305         }
1306
1307         /* Re-schedule us to retry on timer expiry. */
1308         end_time = timeval_sum(&request_time, &timeout);
1309
1310         DEBUG(10,("push_deferred_open_message_smb2: "
1311                 "timeout at %s\n",
1312                 timeval_string(talloc_tos(),
1313                                 &end_time,
1314                                 true) ));
1315
1316         state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1317                                 state,
1318                                 end_time,
1319                                 smb2_deferred_open_timer,
1320                                 smb2req);
1321         if (!state->te) {
1322                 return false;
1323         }
1324
1325         /* allow this request to be canceled */
1326         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1327
1328         return true;
1329 }