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
  31 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  32 {
  33         switch(in_oplock_level) {
  34         case SMB2_OPLOCK_LEVEL_NONE:
  35                 return NO_OPLOCK;
  36         case SMB2_OPLOCK_LEVEL_II:
  37                 return LEVEL_II_OPLOCK;
  38         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  39                 return EXCLUSIVE_OPLOCK;
  40         case SMB2_OPLOCK_LEVEL_BATCH:
  41                 return BATCH_OPLOCK;
  42         case SMB2_OPLOCK_LEVEL_LEASE:
  43                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  44                         "LEASE_OPLOCK_REQUESTED\n"));
  45                 return NO_OPLOCK;
  46         default:
  47                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  48                         "unknown level %u\n",
  49                         (unsigned int)in_oplock_level));
  50                 return NO_OPLOCK;
  51         }
  52 }
  53
  54 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  55 {
  56         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  57                 return SMB2_OPLOCK_LEVEL_BATCH;
  58         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  59                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  60         } else if (oplock_type == LEVEL_II_OPLOCK) {
  61                 /*
  62                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  63                  * this also includes FAKE_LEVEL_II_OPLOCKs
  64                  * which are internal only.
  65                  */
  66                 return SMB2_OPLOCK_LEVEL_II;
  67         } else {
  68                 return SMB2_OPLOCK_LEVEL_NONE;
  69         }
  70 }
  71
  72 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  73                         struct tevent_context *ev,
  74                         struct smbd_smb2_request *smb2req,
  75                         uint8_t in_oplock_level,
  76                         uint32_t in_impersonation_level,
  77                         uint32_t in_desired_access,
  78                         uint32_t in_file_attributes,
  79                         uint32_t in_share_access,
  80                         uint32_t in_create_disposition,
  81                         uint32_t in_create_options,
  82                         const char *in_name,
  83                         struct smb2_create_blobs in_context_blobs);
  84 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  85                         TALLOC_CTX *mem_ctx,
  86                         uint8_t *out_oplock_level,
  87                         uint32_t *out_create_action,
  88                         NTTIME *out_creation_time,
  89                         NTTIME *out_last_access_time,
  90                         NTTIME *out_last_write_time,
  91                         NTTIME *out_change_time,
  92                         uint64_t *out_allocation_size,
  93                         uint64_t *out_end_of_file,
  94                         uint32_t *out_file_attributes,
  95                         uint64_t *out_file_id_persistent,
  96                         uint64_t *out_file_id_volatile,
  97                         struct smb2_create_blobs *out_context_blobs);
  98
  99 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
 100 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
 101 {
 102         const uint8_t *inbody;
 103         const struct iovec *indyniov;
 104         uint8_t in_oplock_level;
 105         uint32_t in_impersonation_level;
 106         uint32_t in_desired_access;
 107         uint32_t in_file_attributes;
 108         uint32_t in_share_access;
 109         uint32_t in_create_disposition;
 110         uint32_t in_create_options;
 111         uint16_t in_name_offset;
 112         uint16_t in_name_length;
 113         DATA_BLOB in_name_buffer;
 114         char *in_name_string;
 115         size_t in_name_string_size;
 116         uint32_t name_offset = 0;
 117         uint32_t name_available_length = 0;
 118         uint32_t in_context_offset;
 119         uint32_t in_context_length;
 120         DATA_BLOB in_context_buffer;
 121         struct smb2_create_blobs in_context_blobs;
 122         uint32_t context_offset = 0;
 123         uint32_t context_available_length = 0;
 124         uint32_t dyn_offset;
 125         NTSTATUS status;
 126         bool ok;
 127         struct tevent_req *tsubreq;
 128
 129         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 130         if (!NT_STATUS_IS_OK(status)) {
 131                 return smbd_smb2_request_error(smb2req, status);
 132         }
 133         inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
 134
 135         in_oplock_level         = CVAL(inbody, 0x03);
 136         in_impersonation_level  = IVAL(inbody, 0x04);
 137         in_desired_access       = IVAL(inbody, 0x18);
 138         in_file_attributes      = IVAL(inbody, 0x1C);
 139         in_share_access         = IVAL(inbody, 0x20);
 140         in_create_disposition   = IVAL(inbody, 0x24);
 141         in_create_options       = IVAL(inbody, 0x28);
 142         in_name_offset          = SVAL(inbody, 0x2C);
 143         in_name_length          = SVAL(inbody, 0x2E);
 144         in_context_offset       = IVAL(inbody, 0x30);
 145         in_context_length       = IVAL(inbody, 0x34);
 146
 147         /*
 148          * First check if the dynamic name and context buffers
 149          * are correctly specified.
 150          *
 151          * Note: That we don't check if the name and context buffers
 152          *       overlap
 153          */
 154
 155         dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
 156
 157         if (in_name_offset == 0 && in_name_length == 0) {
 158                 /* This is ok */
 159                 name_offset = 0;
 160         } else if (in_name_offset < dyn_offset) {
 161                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 162         } else {
 163                 name_offset = in_name_offset - dyn_offset;
 164         }
 165
 166         indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
 167
 168         if (name_offset > indyniov->iov_len) {
 169                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 170         }
 171
 172         name_available_length = indyniov->iov_len - name_offset;
 173
 174         if (in_name_length > name_available_length) {
 175                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 176         }
 177
 178         in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
 179         in_name_buffer.length = in_name_length;
 180
 181         if (in_context_offset == 0 && in_context_length == 0) {
 182                 /* This is ok */
 183                 context_offset = 0;
 184         } else if (in_context_offset < dyn_offset) {
 185                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 186         } else {
 187                 context_offset = in_context_offset - dyn_offset;
 188         }
 189
 190         if (context_offset > indyniov->iov_len) {
 191                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 192         }
 193
 194         context_available_length = indyniov->iov_len - context_offset;
 195
 196         if (in_context_length > context_available_length) {
 197                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 198         }
 199
 200         in_context_buffer.data = (uint8_t *)indyniov->iov_base +
 201                 context_offset;
 202         in_context_buffer.length = in_context_length;
 203
 204         /*
 205          * Now interpret the name and context buffers
 206          */
 207
 208         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 209                                    in_name_buffer.data,
 210                                    in_name_buffer.length,
 211                                    &in_name_string,
 212                                    &in_name_string_size);
 213         if (!ok) {
 214                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 215         }
 216
 217         if (in_name_buffer.length == 0) {
 218                 in_name_string_size = 0;
 219         }
 220
 221         if (strlen(in_name_string) != in_name_string_size) {
 222                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 223         }
 224
 225         ZERO_STRUCT(in_context_blobs);
 226         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 227         if (!NT_STATUS_IS_OK(status)) {
 228                 return smbd_smb2_request_error(smb2req, status);
 229         }
 230
 231         tsubreq = smbd_smb2_create_send(smb2req,
 232                                        smb2req->sconn->ev_ctx,
 233                                        smb2req,
 234                                        in_oplock_level,
 235                                        in_impersonation_level,
 236                                        in_desired_access,
 237                                        in_file_attributes,
 238                                        in_share_access,
 239                                        in_create_disposition,
 240                                        in_create_options,
 241                                        in_name_string,
 242                                        in_context_blobs);
 243         if (tsubreq == NULL) {
 244                 smb2req->subreq = NULL;
 245                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 246         }
 247         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 248
 249         /*
 250          * For now we keep the logic that we do not send STATUS_PENDING
 251          * for sharing violations, so we just wait 2 seconds.
 252          *
 253          * TODO: we need more tests for this.
 254          */
 255         return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
 256 }
 257
 258 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 259 {
 260         uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
 261         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 262 }
 263
 264 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 265 {
 266         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 267                                         struct smbd_smb2_request);
 268         DATA_BLOB outbody;
 269         DATA_BLOB outdyn;
 270         uint8_t out_oplock_level = 0;
 271         uint32_t out_create_action = 0;
 272         NTTIME out_creation_time = 0;
 273         NTTIME out_last_access_time = 0;
 274         NTTIME out_last_write_time = 0;
 275         NTTIME out_change_time = 0;
 276         uint64_t out_allocation_size = 0;
 277         uint64_t out_end_of_file = 0;
 278         uint32_t out_file_attributes = 0;
 279         uint64_t out_file_id_persistent = 0;
 280         uint64_t out_file_id_volatile = 0;
 281         struct smb2_create_blobs out_context_blobs;
 282         DATA_BLOB out_context_buffer;
 283         uint16_t out_context_buffer_offset = 0;
 284         NTSTATUS status;
 285         NTSTATUS error; /* transport error */
 286
 287         if (smb2req->cancelled) {
 288                 uint64_t mid = get_mid_from_smb2req(smb2req);
 289                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 290                         (unsigned long long)mid ));
 291                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 292                 if (!NT_STATUS_IS_OK(error)) {
 293                         smbd_server_connection_terminate(smb2req->sconn,
 294                                 nt_errstr(error));
 295                         return;
 296                 }
 297                 return;
 298         }
 299
 300         status = smbd_smb2_create_recv(tsubreq,
 301                                        smb2req,
 302                                        &out_oplock_level,
 303                                        &out_create_action,
 304                                        &out_creation_time,
 305                                        &out_last_access_time,
 306                                        &out_last_write_time,
 307                                        &out_change_time,
 308                                        &out_allocation_size,
 309                                        &out_end_of_file,
 310                                        &out_file_attributes,
 311                                        &out_file_id_persistent,
 312                                        &out_file_id_volatile,
 313                                        &out_context_blobs);
 314         if (!NT_STATUS_IS_OK(status)) {
 315                 error = smbd_smb2_request_error(smb2req, status);
 316                 if (!NT_STATUS_IS_OK(error)) {
 317                         smbd_server_connection_terminate(smb2req->sconn,
 318                                                          nt_errstr(error));
 319                         return;
 320                 }
 321                 return;
 322         }
 323
 324         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 325         if (!NT_STATUS_IS_OK(status)) {
 326                 error = smbd_smb2_request_error(smb2req, status);
 327                 if (!NT_STATUS_IS_OK(error)) {
 328                         smbd_server_connection_terminate(smb2req->sconn,
 329                                                          nt_errstr(error));
 330                         return;
 331                 }
 332                 return;
 333         }
 334
 335         if (out_context_buffer.length > 0) {
 336                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 337         }
 338
 339         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 340         if (outbody.data == NULL) {
 341                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 342                 if (!NT_STATUS_IS_OK(error)) {
 343                         smbd_server_connection_terminate(smb2req->sconn,
 344                                                          nt_errstr(error));
 345                         return;
 346                 }
 347                 return;
 348         }
 349
 350         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 351         SCVAL(outbody.data, 0x02,
 352               out_oplock_level);                /* oplock level */
 353         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 354         SIVAL(outbody.data, 0x04,
 355               out_create_action);               /* create action */
 356         SBVAL(outbody.data, 0x08,
 357               out_creation_time);               /* creation time */
 358         SBVAL(outbody.data, 0x10,
 359               out_last_access_time);            /* last access time */
 360         SBVAL(outbody.data, 0x18,
 361               out_last_write_time);             /* last write time */
 362         SBVAL(outbody.data, 0x20,
 363               out_change_time);                 /* change time */
 364         SBVAL(outbody.data, 0x28,
 365               out_allocation_size);             /* allocation size */
 366         SBVAL(outbody.data, 0x30,
 367               out_end_of_file);                 /* end of file */
 368         SIVAL(outbody.data, 0x38,
 369               out_file_attributes);             /* file attributes */
 370         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 371         SBVAL(outbody.data, 0x40,
 372               out_file_id_persistent);          /* file id (persistent) */
 373         SBVAL(outbody.data, 0x48,
 374               out_file_id_volatile);            /* file id (volatile) */
 375         SIVAL(outbody.data, 0x50,
 376               out_context_buffer_offset);       /* create contexts offset */
 377         SIVAL(outbody.data, 0x54,
 378               out_context_buffer.length);       /* create contexts length */
 379
 380         outdyn = out_context_buffer;
 381
 382         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 383         if (!NT_STATUS_IS_OK(error)) {
 384                 smbd_server_connection_terminate(smb2req->sconn,
 385                                                  nt_errstr(error));
 386                 return;
 387         }
 388 }
 389
 390 struct smbd_smb2_create_state {
 391         struct smbd_smb2_request *smb2req;
 392         struct smb_request *smb1req;
 393         struct timed_event *te;
 394         struct tevent_immediate *im;
 395         struct timeval request_time;
 396         struct file_id id;
 397         DATA_BLOB private_data;
 398         uint8_t out_oplock_level;
 399         uint32_t out_create_action;
 400         NTTIME out_creation_time;
 401         NTTIME out_last_access_time;
 402         NTTIME out_last_write_time;
 403         NTTIME out_change_time;
 404         uint64_t out_allocation_size;
 405         uint64_t out_end_of_file;
 406         uint32_t out_file_attributes;
 407         uint64_t out_file_id_persistent;
 408         uint64_t out_file_id_volatile;
 409         struct smb2_create_blobs out_context_blobs;
 410 };
 411
 412 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 413                         struct tevent_context *ev,
 414                         struct smbd_smb2_request *smb2req,
 415                         uint8_t in_oplock_level,
 416                         uint32_t in_impersonation_level,
 417                         uint32_t in_desired_access,
 418                         uint32_t in_file_attributes,
 419                         uint32_t in_share_access,
 420                         uint32_t in_create_disposition,
 421                         uint32_t in_create_options,
 422                         const char *in_name,
 423                         struct smb2_create_blobs in_context_blobs)
 424 {
 425         struct tevent_req *req = NULL;
 426         struct smbd_smb2_create_state *state = NULL;
 427         NTSTATUS status;
 428         struct smb_request *smb1req = NULL;
 429         files_struct *result = NULL;
 430         int info;
 431         struct timespec write_time_ts;
 432         struct smb2_create_blobs out_context_blobs;
 433         int requested_oplock_level;
 434         struct smb2_create_blob *dhnc = NULL;
 435         struct smb2_create_blob *dh2c = NULL;
 436         struct smbXsrv_open *op = NULL;
 437
 438         ZERO_STRUCT(out_context_blobs);
 439
 440         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
 441                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 442         } else {
 443                 requested_oplock_level = in_oplock_level;
 444         }
 445
 446
 447         if (smb2req->subreq == NULL) {
 448                 /* New create call. */
 449                 req = tevent_req_create(mem_ctx, &state,
 450                                 struct smbd_smb2_create_state);
 451                 if (req == NULL) {
 452                         return NULL;
 453                 }
 454                 state->smb2req = smb2req;
 455
 456                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 457                 if (tevent_req_nomem(smb1req, req)) {
 458                         return tevent_req_post(req, ev);
 459                 }
 460                 state->smb1req = smb1req;
 461                 smb2req->subreq = req;
 462                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 463                         in_name));
 464         } else {
 465                 /* Re-entrant create call. */
 466                 req = smb2req->subreq;
 467                 state = tevent_req_data(req,
 468                                 struct smbd_smb2_create_state);
 469                 smb1req = state->smb1req;
 470                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 471                         in_name ));
 472         }
 473
 474         dhnc = smb2_create_blob_find(&in_context_blobs,
 475                                      SMB2_CREATE_TAG_DHNC);
 476
 477         if (dhnc) {
 478                 if (dhnc->data.length != 16) {
 479                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 480                         return tevent_req_post(req, ev);
 481                 }
 482                 if (in_context_blobs.num_blobs != 1) {
 483                         /*
 484                          * DHNC should be the only one.
 485                          */
 486                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 487                         return tevent_req_post(req, ev);
 488                 }
 489         }
 490
 491         dh2c = smb2_create_blob_find(&in_context_blobs,
 492                                      SMB2_CREATE_TAG_DH2C);
 493         if (dh2c) {
 494                 if (dh2c->data.length != 36) {
 495                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 496                         return tevent_req_post(req, ev);
 497                 }
 498                 if (in_context_blobs.num_blobs != 1) {
 499                         /*
 500                          * DH2C should be the only one.
 501                          */
 502                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 503                         return tevent_req_post(req, ev);
 504                 }
 505         }
 506
 507         if (IS_IPC(smb1req->conn)) {
 508                 const char *pipe_name = in_name;
 509
 510                 if (dhnc || dh2c) {
 511                         /* durable handles are not supported on IPC$ */
 512                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 513                         return tevent_req_post(req, ev);
 514                 }
 515
 516                 if (!lp_nt_pipe_support()) {
 517                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 518                         return tevent_req_post(req, ev);
 519                 }
 520
 521                 status = open_np_file(smb1req, pipe_name, &result);
 522                 if (!NT_STATUS_IS_OK(status)) {
 523                         tevent_req_nterror(req, status);
 524                         return tevent_req_post(req, ev);
 525                 }
 526                 info = FILE_WAS_OPENED;
 527         } else if (CAN_PRINT(smb1req->conn)) {
 528                 if (dhnc || dh2c) {
 529                         /* durable handles are not supported on printers */
 530                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 531                         return tevent_req_post(req, ev);
 532                 }
 533
 534                 status = file_new(smb1req, smb1req->conn, &result);
 535                 if(!NT_STATUS_IS_OK(status)) {
 536                         tevent_req_nterror(req, status);
 537                         return tevent_req_post(req, ev);
 538                 }
 539
 540                 status = print_spool_open(result, in_name,
 541                                           smb1req->vuid);
 542                 if (!NT_STATUS_IS_OK(status)) {
 543                         file_free(smb1req, result);
 544                         tevent_req_nterror(req, status);
 545                         return tevent_req_post(req, ev);
 546                 }
 547                 info = FILE_WAS_CREATED;
 548         } else {
 549                 char *fname;
 550                 struct smb2_create_blob *exta = NULL;
 551                 struct ea_list *ea_list = NULL;
 552                 struct smb2_create_blob *mxac = NULL;
 553                 NTTIME max_access_time = 0;
 554                 struct smb2_create_blob *secd = NULL;
 555                 struct security_descriptor *sec_desc = NULL;
 556                 struct smb2_create_blob *dhnq = NULL;
 557                 struct smb2_create_blob *alsi = NULL;
 558                 uint64_t allocation_size = 0;
 559                 struct smb2_create_blob *twrp = NULL;
 560                 struct smb2_create_blob *qfid = NULL;
 561                 struct GUID create_guid = GUID_zero();
 562                 bool update_open = false;
 563                 bool durable_requested = false;
 564                 uint32_t durable_timeout_msec = 0;
 565                 bool do_durable_reconnect = false;
 566                 struct smb2_create_blob *dh2q = 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                 alsi = smb2_create_blob_find(&in_context_blobs,
 577                                              SMB2_CREATE_TAG_ALSI);
 578                 twrp = smb2_create_blob_find(&in_context_blobs,
 579                                              SMB2_CREATE_TAG_TWRP);
 580                 qfid = smb2_create_blob_find(&in_context_blobs,
 581                                              SMB2_CREATE_TAG_QFID);
 582                 dh2q = smb2_create_blob_find(&in_context_blobs,
 583                                              SMB2_CREATE_TAG_DH2Q);
 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                         ea_list = read_nttrans_ea_list(mem_ctx,
 592                                 (const char *)exta->data.data, exta->data.length);
 593                         if (!ea_list) {
 594                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 595                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 596                                 return tevent_req_post(req, ev);
 597                         }
 598                 }
 599
 600                 if (mxac) {
 601                         if (mxac->data.length == 0) {
 602                                 max_access_time = 0;
 603                         } else if (mxac->data.length == 8) {
 604                                 max_access_time = BVAL(mxac->data.data, 0);
 605                         } else {
 606                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 607                                 return tevent_req_post(req, ev);
 608                         }
 609                 }
 610
 611                 if (secd) {
 612                         enum ndr_err_code ndr_err;
 613
 614                         sec_desc = talloc_zero(state, struct security_descriptor);
 615                         if (tevent_req_nomem(sec_desc, req)) {
 616                                 return tevent_req_post(req, ev);
 617                         }
 618
 619                         ndr_err = ndr_pull_struct_blob(&secd->data,
 620                                 sec_desc, sec_desc,
 621                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 622                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 623                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 624                                          ndr_errstr(ndr_err)));
 625                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 626                                 return tevent_req_post(req, ev);
 627                         }
 628                 }
 629
 630                 if (dhnq) {
 631                         if (dhnq->data.length != 16) {
 632                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 633                                 return tevent_req_post(req, ev);
 634                         }
 635
 636                         if (dh2q) {
 637                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 638                                 return tevent_req_post(req, ev);
 639                         }
 640
 641                         /*
 642                          * durable handle request is processed below.
 643                          */
 644                         durable_requested = true;
 645                         /*
 646                          * Set the timeout to 16 mins.
 647                          *
 648                          * TODO: test this against Windows 2012
 649                          *       as the default for durable v2 is 1 min.
 650                          */
 651                         durable_timeout_msec = (16*60*1000);
 652                 }
 653
 654                 if (dh2q) {
 655                         const uint8_t *p = dh2q->data.data;
 656                         uint32_t durable_v2_timeout = 0;
 657                         DATA_BLOB create_guid_blob;
 658
 659                         if (dh2q->data.length != 32) {
 660                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 661                                 return tevent_req_post(req, ev);
 662                         }
 663
 664                         if (dhnq) {
 665                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 666                                 return tevent_req_post(req, ev);
 667                         }
 668
 669                         durable_v2_timeout = IVAL(p, 0);
 670                         create_guid_blob = data_blob_const(p + 16, 16);
 671
 672                         status = GUID_from_ndr_blob(&create_guid_blob,
 673                                                     &create_guid);
 674                         if (tevent_req_nterror(req, status)) {
 675                                 return tevent_req_post(req, ev);
 676                         }
 677                         /*
 678                          * we need to store the create_guid later
 679                          */
 680                         update_open = true;
 681
 682                         /*
 683                          * durable handle v2 request processed below
 684                          */
 685                         durable_requested = true;
 686                         durable_timeout_msec = durable_v2_timeout;
 687                         if (durable_timeout_msec == 0) {
 688                                 /*
 689                                  * Set the timeout to 1 min as default.
 690                                  *
 691                                  * This matches Windows 2012.
 692                                  */
 693                                 durable_timeout_msec = (60*1000);
 694                         }
 695                 }
 696
 697                 if (dhnc) {
 698                         NTTIME now = timeval_to_nttime(&smb2req->request_time);
 699                         uint64_t persistent_id;
 700
 701                         persistent_id = BVAL(dhnc->data.data, 0);
 702
 703                         status = smb2srv_open_recreate(smb2req->sconn->conn,
 704                                                 smb1req->conn->session_info,
 705                                                 persistent_id, create_guid,
 706                                                 now, &op);
 707                         if (!NT_STATUS_IS_OK(status)) {
 708                                 DEBUG(3, ("smbd_smb2_create_send: "
 709                                           "smb2srv_open_recreate v1 failed: %s\n",
 710                                           nt_errstr(status)));
 711                                 tevent_req_nterror(req, status);
 712                                 return tevent_req_post(req, ev);
 713                         }
 714
 715                         DEBUG(10, ("smb2_create_send: DHNC: %s recreate the "
 716                                    "smb2srv_open struct for a durable handle.\n",
 717                                    op->global->durable ? "did" : "could not"));
 718
 719                         if (!op->global->durable) {
 720                                 talloc_free(op);
 721                                 tevent_req_nterror(req,
 722                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 723                                 return tevent_req_post(req, ev);
 724                         }
 725
 726                         do_durable_reconnect = true;
 727                 }
 728
 729                 if (dh2c) {
 730                         const uint8_t *p = dh2c->data.data;
 731                         NTTIME now = timeval_to_nttime(&smb2req->request_time);
 732                         uint64_t persistent_id;
 733                         DATA_BLOB create_guid_blob;
 734
 735                         persistent_id = BVAL(p, 0);
 736                         create_guid_blob = data_blob_const(p + 16, 16);
 737
 738                         status = GUID_from_ndr_blob(&create_guid_blob,
 739                                                     &create_guid);
 740                         if (tevent_req_nterror(req, status)) {
 741                                 return tevent_req_post(req, ev);
 742                         }
 743
 744                         status = smb2srv_open_recreate(smb2req->sconn->conn,
 745                                                        smb1req->conn->session_info,
 746                                                        persistent_id, create_guid,
 747                                                        now, &op);
 748                         if (!NT_STATUS_IS_OK(status)) {
 749                                 DEBUG(3, ("smbd_smb2_create_send: "
 750                                           "smb2srv_open_recreate v2 failed: %s\n",
 751                                           nt_errstr(status)));
 752                                 tevent_req_nterror(req, status);
 753                                 return tevent_req_post(req, ev);
 754                         }
 755
 756                         DEBUG(10, ("smb2_create_send: DH2C: %s recreate the "
 757                                    "smb2srv_open struct for a durable handle.\n",
 758                                    op->global->durable ? "did" : "could not"));
 759
 760                         if (!op->global->durable) {
 761                                 talloc_free(op);
 762                                 tevent_req_nterror(req,
 763                                         NT_STATUS_OBJECT_NAME_NOT_FOUND);
 764                                 return tevent_req_post(req, ev);
 765                         }
 766
 767                         do_durable_reconnect = true;
 768                 }
 769
 770                 if (alsi) {
 771                         if (alsi->data.length != 8) {
 772                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 773                                 return tevent_req_post(req, ev);
 774                         }
 775                         allocation_size = BVAL(alsi->data.data, 0);
 776                 }
 777
 778                 if (twrp) {
 779                         NTTIME nttime;
 780                         time_t t;
 781                         struct tm *tm;
 782
 783                         if (twrp->data.length != 8) {
 784                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 785                                 return tevent_req_post(req, ev);
 786                         }
 787
 788                         nttime = BVAL(twrp->data.data, 0);
 789                         t = nt_time_to_unix(nttime);
 790                         tm = gmtime(&t);
 791
 792                         TALLOC_FREE(fname);
 793                         fname = talloc_asprintf(state,
 794                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 795                                         tm->tm_year + 1900,
 796                                         tm->tm_mon + 1,
 797                                         tm->tm_mday,
 798                                         tm->tm_hour,
 799                                         tm->tm_min,
 800                                         tm->tm_sec,
 801                                         in_name);
 802                         if (tevent_req_nomem(fname, req)) {
 803                                 return tevent_req_post(req, ev);
 804                         }
 805                 }
 806
 807                 if (qfid) {
 808                         if (qfid->data.length != 0) {
 809                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 810                                 return tevent_req_post(req, ev);
 811                         }
 812                 }
 813
 814                 /* these are ignored for SMB2 */
 815                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 816                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 817
 818                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 819
 820                 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
 821
 822                 /*
 823                  * For the backend file open procedure, there are
 824                  * two possible modes: durable_reconnect or not.
 825                  */
 826                 if (do_durable_reconnect) {
 827                         DATA_BLOB new_cookie = data_blob_null;
 828
 829                         status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
 830                                                 smb1req,
 831                                                 op,
 832                                                 op->global->backend_cookie,
 833                                                 op, &result, &new_cookie);
 834                         if (!NT_STATUS_IS_OK(status)) {
 835                                 NTSTATUS return_status;
 836
 837                                 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 838
 839                                 DEBUG(3, ("smbd_smb2_create_send: "
 840                                           "durable_reconnect failed: %s => %s\n",
 841                                           nt_errstr(status),
 842                                           nt_errstr(return_status)));
 843
 844                                 tevent_req_nterror(req, return_status);
 845                                 return tevent_req_post(req, ev);
 846                         }
 847
 848                         data_blob_free(&op->global->backend_cookie);
 849                         op->global->backend_cookie = new_cookie;
 850
 851                         op->status = NT_STATUS_OK;
 852                         op->global->disconnect_time = 0;
 853
 854                         status = smbXsrv_open_update(op);
 855                         if (!NT_STATUS_IS_OK(status)) {
 856                                 tevent_req_nterror(req, status);
 857                                 return tevent_req_post(req, ev);
 858                         }
 859
 860                         info = FILE_WAS_OPENED;
 861                 } else {
 862                         struct smb_filename *smb_fname = NULL;
 863
 864                         /*
 865                          * For a DFS path the function parse_dfs_path()
 866                          * will do the path processing.
 867                          */
 868
 869                         if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 870                                 /* convert '\\' into '/' */
 871                                 status = check_path_syntax(fname);
 872                                 if (!NT_STATUS_IS_OK(status)) {
 873                                         tevent_req_nterror(req, status);
 874                                         return tevent_req_post(req, ev);
 875                                 }
 876                         }
 877
 878                         status = filename_convert(req,
 879                                                   smb1req->conn,
 880                                                   smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 881                                                   fname,
 882                                                   0,    /* unix_convert flags */
 883                                                   NULL, /* ppath_contains_wcards */
 884                                                   &smb_fname);
 885                         if (!NT_STATUS_IS_OK(status)) {
 886                                 tevent_req_nterror(req, status);
 887                                 return tevent_req_post(req, ev);
 888                         }
 889
 890                         status = SMB_VFS_CREATE_FILE(smb1req->conn,
 891                                                      smb1req,
 892                                                      0, /* root_dir_fid */
 893                                                      smb_fname,
 894                                                      in_desired_access,
 895                                                      in_share_access,
 896                                                      in_create_disposition,
 897                                                      in_create_options,
 898                                                      in_file_attributes,
 899                                                      map_smb2_oplock_levels_to_samba(requested_oplock_level),
 900                                                      allocation_size,
 901                                                      0, /* private_flags */
 902                                                      sec_desc,
 903                                                      ea_list,
 904                                                      &result,
 905                                                      &info);
 906                         if (!NT_STATUS_IS_OK(status)) {
 907                                 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
 908                                         return req;
 909                                 }
 910                                 tevent_req_nterror(req, status);
 911                                 return tevent_req_post(req, ev);
 912                         }
 913                         op = result->op;
 914                 }
 915
 916                 /*
 917                  * here we have op == result->op
 918                  */
 919
 920                 DEBUG(10, ("smbd_smb2_create_send: "
 921                            "response construction phase\n"));
 922
 923                 if (mxac) {
 924                         NTTIME last_write_time;
 925
 926                         unix_timespec_to_nt_time(&last_write_time,
 927                                                  result->fsp_name->st.st_ex_mtime);
 928                         if (last_write_time != max_access_time) {
 929                                 uint8_t p[8];
 930                                 uint32_t max_access_granted;
 931                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 932
 933                                 status = smbd_calculate_access_mask(smb1req->conn,
 934                                                         result->fsp_name,
 935                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 936                                                         &max_access_granted);
 937
 938                                 SIVAL(p, 0, NT_STATUS_V(status));
 939                                 SIVAL(p, 4, max_access_granted);
 940
 941                                 status = smb2_create_blob_add(state,
 942                                                         &out_context_blobs,
 943                                                         SMB2_CREATE_TAG_MXAC,
 944                                                         blob);
 945                                 if (!NT_STATUS_IS_OK(status)) {
 946                                         tevent_req_nterror(req, status);
 947                                         return tevent_req_post(req, ev);
 948                                 }
 949                         }
 950                 }
 951
 952                 if (durable_requested &&
 953                     BATCH_OPLOCK_TYPE(result->oplock_type))
 954                 {
 955                         status = SMB_VFS_DURABLE_COOKIE(result,
 956                                                 op,
 957                                                 &op->global->backend_cookie);
 958                         if (!NT_STATUS_IS_OK(status)) {
 959                                 op->global->backend_cookie = data_blob_null;
 960                         }
 961                 }
 962                 if (op->global->backend_cookie.length > 0) {
 963                         update_open = true;
 964
 965                         op->global->durable = true;
 966                         op->global->durable_timeout_msec = durable_timeout_msec;
 967                 }
 968
 969                 if (update_open) {
 970                         op->global->create_guid = create_guid;
 971
 972                         status = smbXsrv_open_update(op);
 973                         DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
 974                                    "returned %s\n",
 975                                    nt_errstr(status)));
 976                         if (!NT_STATUS_IS_OK(status)) {
 977                                 tevent_req_nterror(req, status);
 978                                 return tevent_req_post(req, ev);
 979                         }
 980                 }
 981
 982                 if (dhnq && op->global->durable) {
 983                         uint8_t p[8] = { 0, };
 984                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 985
 986                         status = smb2_create_blob_add(state,
 987                                                       &out_context_blobs,
 988                                                       SMB2_CREATE_TAG_DHNQ,
 989                                                       blob);
 990                         if (!NT_STATUS_IS_OK(status)) {
 991                                 tevent_req_nterror(req, status);
 992                                 return tevent_req_post(req, ev);
 993                         }
 994                 }
 995
 996                 if (dh2q && op->global->durable) {
 997                         uint8_t p[8] = { 0, };
 998                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 999                         uint32_t durable_v2_response_flags = 0;
1000
1001                         SIVAL(p, 0, op->global->durable_timeout_msec);
1002                         SIVAL(p, 4, durable_v2_response_flags);
1003
1004                         status = smb2_create_blob_add(state, &out_context_blobs,
1005                                                       SMB2_CREATE_TAG_DH2Q,
1006                                                       blob);
1007                         if (!NT_STATUS_IS_OK(status)) {
1008                                 tevent_req_nterror(req, status);
1009                                 return tevent_req_post(req, ev);
1010                         }
1011                 }
1012
1013                 if (qfid) {
1014                         uint8_t p[32];
1015                         uint64_t file_index = get_FileIndex(result->conn,
1016                                                         &result->fsp_name->st);
1017                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1018
1019                         ZERO_STRUCT(p);
1020
1021                         /* From conversations with Microsoft engineers at
1022                            the MS plugfest. The first 8 bytes are the "volume index"
1023                            == inode, the second 8 bytes are the "volume id",
1024                            == dev. This will be updated in the SMB2 doc. */
1025                         SBVAL(p, 0, file_index);
1026                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1027
1028                         status = smb2_create_blob_add(state, &out_context_blobs,
1029                                                       SMB2_CREATE_TAG_QFID,
1030                                                       blob);
1031                         if (!NT_STATUS_IS_OK(status)) {
1032                                 tevent_req_nterror(req, status);
1033                                 return tevent_req_post(req, ev);
1034                         }
1035                 }
1036         }
1037
1038         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1039
1040         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1041                 state->out_oplock_level = in_oplock_level;
1042         } else {
1043                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1044         }
1045
1046         if ((in_create_disposition == FILE_SUPERSEDE)
1047             && (info == FILE_WAS_OVERWRITTEN)) {
1048                 state->out_create_action = FILE_WAS_SUPERSEDED;
1049         } else {
1050                 state->out_create_action = info;
1051         }
1052         state->out_file_attributes = dos_mode(result->conn,
1053                                            result->fsp_name);
1054         /* Deal with other possible opens having a modified
1055            write time. JRA. */
1056         ZERO_STRUCT(write_time_ts);
1057         get_file_infos(result->file_id, 0, NULL, &write_time_ts);
1058         if (!null_timespec(write_time_ts)) {
1059                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
1060         }
1061
1062         unix_timespec_to_nt_time(&state->out_creation_time,
1063                         get_create_timespec(smb1req->conn, result,
1064                                         result->fsp_name));
1065         unix_timespec_to_nt_time(&state->out_last_access_time,
1066                         result->fsp_name->st.st_ex_atime);
1067         unix_timespec_to_nt_time(&state->out_last_write_time,
1068                         result->fsp_name->st.st_ex_mtime);
1069         unix_timespec_to_nt_time(&state->out_change_time,
1070                         get_change_timespec(smb1req->conn, result,
1071                                         result->fsp_name));
1072         state->out_allocation_size =
1073                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1074                                                &(result->fsp_name->st));
1075         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1076         if (state->out_file_attributes == 0) {
1077                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1078         }
1079         state->out_file_id_persistent = result->op->global->open_persistent_id;
1080         state->out_file_id_volatile = result->op->global->open_volatile_id;
1081         state->out_context_blobs = out_context_blobs;
1082
1083         DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1084                   fsp_str_dbg(result), fsp_fnum_dbg(result)));
1085
1086         tevent_req_done(req);
1087         return tevent_req_post(req, ev);
1088 }
1089
1090 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1091                         TALLOC_CTX *mem_ctx,
1092                         uint8_t *out_oplock_level,
1093                         uint32_t *out_create_action,
1094                         NTTIME *out_creation_time,
1095                         NTTIME *out_last_access_time,
1096                         NTTIME *out_last_write_time,
1097                         NTTIME *out_change_time,
1098                         uint64_t *out_allocation_size,
1099                         uint64_t *out_end_of_file,
1100                         uint32_t *out_file_attributes,
1101                         uint64_t *out_file_id_persistent,
1102                         uint64_t *out_file_id_volatile,
1103                         struct smb2_create_blobs *out_context_blobs)
1104 {
1105         NTSTATUS status;
1106         struct smbd_smb2_create_state *state = tevent_req_data(req,
1107                                                struct smbd_smb2_create_state);
1108
1109         if (tevent_req_is_nterror(req, &status)) {
1110                 tevent_req_received(req);
1111                 return status;
1112         }
1113
1114         *out_oplock_level       = state->out_oplock_level;
1115         *out_create_action      = state->out_create_action;
1116         *out_creation_time      = state->out_creation_time;
1117         *out_last_access_time   = state->out_last_access_time;
1118         *out_last_write_time    = state->out_last_write_time;
1119         *out_change_time        = state->out_change_time;
1120         *out_allocation_size    = state->out_allocation_size;
1121         *out_end_of_file        = state->out_end_of_file;
1122         *out_file_attributes    = state->out_file_attributes;
1123         *out_file_id_persistent = state->out_file_id_persistent;
1124         *out_file_id_volatile   = state->out_file_id_volatile;
1125         *out_context_blobs      = state->out_context_blobs;
1126
1127         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1128
1129         tevent_req_received(req);
1130         return NT_STATUS_OK;
1131 }
1132
1133 /*********************************************************
1134  Code for dealing with deferred opens.
1135 *********************************************************/
1136
1137 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1138                         struct timeval *p_request_time,
1139                         void **pp_state)
1140 {
1141         struct smbd_smb2_create_state *state = NULL;
1142         struct tevent_req *req = NULL;
1143
1144         if (!smb2req) {
1145                 return false;
1146         }
1147         if (smb2req->async_te == NULL) {
1148                 return false;
1149         }
1150         req = smb2req->subreq;
1151         if (!req) {
1152                 return false;
1153         }
1154         state = tevent_req_data(req, struct smbd_smb2_create_state);
1155         if (!state) {
1156                 return false;
1157         }
1158         if (p_request_time) {
1159                 *p_request_time = state->request_time;
1160         }
1161         if (pp_state) {
1162                 *pp_state = (void *)state->private_data.data;
1163         }
1164         return true;
1165 }
1166
1167 /*********************************************************
1168  Re-process this call early - requested by message or
1169  close.
1170 *********************************************************/
1171
1172 static struct smbd_smb2_request *find_open_smb2req(
1173         struct smbd_server_connection *sconn, uint64_t mid)
1174 {
1175         struct smbd_smb2_request *smb2req;
1176
1177         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1178                 uint64_t message_id;
1179                 if (smb2req->subreq == NULL) {
1180                         /* This message has been processed. */
1181                         continue;
1182                 }
1183                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1184                         /* This message has been processed. */
1185                         continue;
1186                 }
1187                 message_id = get_mid_from_smb2req(smb2req);
1188                 if (message_id == mid) {
1189                         return smb2req;
1190                 }
1191         }
1192         return NULL;
1193 }
1194
1195 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1196 {
1197         struct smbd_smb2_create_state *state = NULL;
1198         struct smbd_smb2_request *smb2req;
1199
1200         smb2req = find_open_smb2req(sconn, mid);
1201
1202         if (!smb2req) {
1203                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1204                         (unsigned long long)mid));
1205                 return false;
1206         }
1207         if (!smb2req->subreq) {
1208                 return false;
1209         }
1210         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1211                 return false;
1212         }
1213         state = tevent_req_data(smb2req->subreq,
1214                         struct smbd_smb2_create_state);
1215         if (!state) {
1216                 return false;
1217         }
1218         /* It's not in progress if there's no timeout event. */
1219         if (!state->te) {
1220                 return false;
1221         }
1222
1223         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1224                         (unsigned long long)mid));
1225
1226         return true;
1227 }
1228
1229 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1230                                                         uint64_t mid)
1231 {
1232         struct smbd_smb2_create_state *state = NULL;
1233
1234         if (!smb2req->subreq) {
1235                 return;
1236         }
1237         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1238                 return;
1239         }
1240         state = tevent_req_data(smb2req->subreq,
1241                         struct smbd_smb2_create_state);
1242         if (!state) {
1243                 return;
1244         }
1245
1246         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1247                 "mid %llu\n",
1248                 (unsigned long long)mid ));
1249
1250         /* Ensure we don't have any outstanding timer event. */
1251         TALLOC_FREE(state->te);
1252         /* Ensure we don't have any outstanding immediate event. */
1253         TALLOC_FREE(state->im);
1254 }
1255
1256 void remove_deferred_open_message_smb2(
1257         struct smbd_server_connection *sconn, uint64_t mid)
1258 {
1259         struct smbd_smb2_request *smb2req;
1260
1261         smb2req = find_open_smb2req(sconn, mid);
1262
1263         if (!smb2req) {
1264                 DEBUG(10,("remove_deferred_open_message_smb2: "
1265                         "can't find mid %llu\n",
1266                         (unsigned long long)mid ));
1267                 return;
1268         }
1269         remove_deferred_open_message_smb2_internal(smb2req, mid);
1270 }
1271
1272 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1273                                         struct tevent_immediate *im,
1274                                         void *private_data)
1275 {
1276         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1277                                         struct smbd_smb2_request);
1278         struct smbd_server_connection *sconn = smb2req->sconn;
1279         uint64_t mid = get_mid_from_smb2req(smb2req);
1280         NTSTATUS status;
1281
1282         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1283                 "re-dispatching mid %llu\n",
1284                 (unsigned long long)mid ));
1285
1286         status = smbd_smb2_request_dispatch(smb2req);
1287         if (!NT_STATUS_IS_OK(status)) {
1288                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1289                 return;
1290         }
1291 }
1292
1293 bool schedule_deferred_open_message_smb2(
1294         struct smbd_server_connection *sconn, uint64_t mid)
1295 {
1296         struct smbd_smb2_create_state *state = NULL;
1297         struct smbd_smb2_request *smb2req;
1298
1299         smb2req = find_open_smb2req(sconn, mid);
1300
1301         if (!smb2req) {
1302                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1303                         "can't find mid %llu\n",
1304                         (unsigned long long)mid ));
1305                 return false;
1306         }
1307         if (!smb2req->subreq) {
1308                 return false;
1309         }
1310         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1311                 return false;
1312         }
1313         state = tevent_req_data(smb2req->subreq,
1314                         struct smbd_smb2_create_state);
1315         if (!state) {
1316                 return false;
1317         }
1318
1319         /* Ensure we don't have any outstanding timer event. */
1320         TALLOC_FREE(state->te);
1321         /* Ensure we don't have any outstanding immediate event. */
1322         TALLOC_FREE(state->im);
1323
1324         /*
1325          * This is subtle. We must null out the callback
1326          * before rescheduling, else the first call to
1327          * tevent_req_nterror() causes the _receive()
1328          * function to be called, this causing tevent_req_post()
1329          * to crash.
1330          */
1331         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1332
1333         state->im = tevent_create_immediate(smb2req);
1334         if (!state->im) {
1335                 smbd_server_connection_terminate(smb2req->sconn,
1336                         nt_errstr(NT_STATUS_NO_MEMORY));
1337                 return false;
1338         }
1339
1340         DEBUG(10,("schedule_deferred_open_message_smb2: "
1341                 "re-processing mid %llu\n",
1342                 (unsigned long long)mid ));
1343
1344         tevent_schedule_immediate(state->im,
1345                         smb2req->sconn->ev_ctx,
1346                         smbd_smb2_create_request_dispatch_immediate,
1347                         smb2req);
1348
1349         return true;
1350 }
1351
1352 /*********************************************************
1353  Re-process this call.
1354 *********************************************************/
1355
1356 static void smb2_deferred_open_timer(struct event_context *ev,
1357                                         struct timed_event *te,
1358                                         struct timeval _tval,
1359                                         void *private_data)
1360 {
1361         NTSTATUS status;
1362         struct smbd_smb2_create_state *state = NULL;
1363         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1364                                                 struct smbd_smb2_request);
1365
1366         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1367                 smb2req->current_idx,
1368                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1369
1370         state = tevent_req_data(smb2req->subreq,
1371                         struct smbd_smb2_create_state);
1372         if (!state) {
1373                 return;
1374         }
1375         /*
1376          * Null this out, don't talloc_free. It will
1377          * be talloc_free'd by the tevent library when
1378          * this returns.
1379          */
1380         state->te = NULL;
1381         /* Ensure we don't have any outstanding immediate event. */
1382         TALLOC_FREE(state->im);
1383
1384         /*
1385          * This is subtle. We must null out the callback
1386          * before rescheduling, else the first call to
1387          * tevent_req_nterror() causes the _receive()
1388          * function to be called, this causing tevent_req_post()
1389          * to crash.
1390          */
1391         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1392
1393         status = smbd_smb2_request_dispatch(smb2req);
1394
1395         if (!NT_STATUS_IS_OK(status)) {
1396                 smbd_server_connection_terminate(smb2req->sconn,
1397                                 nt_errstr(status));
1398         }
1399 }
1400
1401 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1402 {
1403         struct smbd_smb2_request *smb2req = NULL;
1404         struct smbd_smb2_create_state *state = tevent_req_data(req,
1405                                 struct smbd_smb2_create_state);
1406         uint64_t mid;
1407
1408         if (!state) {
1409                 return false;
1410         }
1411
1412         if (!state->smb2req) {
1413                 return false;
1414         }
1415
1416         smb2req = state->smb2req;
1417         mid = get_mid_from_smb2req(smb2req);
1418
1419         if (is_deferred_open_async(state->private_data.data)) {
1420                 /* Can't cancel an async create. */
1421                 return false;
1422         }
1423
1424         remove_deferred_open_entry(state->id, mid,
1425                                    messaging_server_id(smb2req->sconn->msg_ctx));
1426         remove_deferred_open_message_smb2_internal(smb2req, mid);
1427         smb2req->cancelled = true;
1428
1429         tevent_req_done(req);
1430         return true;
1431 }
1432
1433 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1434                                 struct timeval request_time,
1435                                 struct timeval timeout,
1436                                 struct file_id id,
1437                                 char *private_data,
1438                                 size_t priv_len)
1439 {
1440         struct tevent_req *req = NULL;
1441         struct smbd_smb2_create_state *state = NULL;
1442         struct timeval end_time;
1443
1444         if (!smb2req) {
1445                 return false;
1446         }
1447         req = smb2req->subreq;
1448         if (!req) {
1449                 return false;
1450         }
1451         state = tevent_req_data(req, struct smbd_smb2_create_state);
1452         if (!state) {
1453                 return false;
1454         }
1455         state->id = id;
1456         state->request_time = request_time;
1457         state->private_data = data_blob_talloc(state, private_data,
1458                                                 priv_len);
1459         if (!state->private_data.data) {
1460                 return false;
1461         }
1462
1463         /* Re-schedule us to retry on timer expiry. */
1464         end_time = timeval_sum(&request_time, &timeout);
1465
1466         DEBUG(10,("push_deferred_open_message_smb2: "
1467                 "timeout at %s\n",
1468                 timeval_string(talloc_tos(),
1469                                 &end_time,
1470                                 true) ));
1471
1472         state->te = tevent_add_timer(smb2req->sconn->ev_ctx,
1473                                 state,
1474                                 end_time,
1475                                 smb2_deferred_open_timer,
1476                                 smb2req);
1477         if (!state->te) {
1478                 return false;
1479         }
1480
1481         /* allow this request to be canceled */
1482         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1483
1484         return true;
1485 }