source3/smbd/smb2_create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6    Copyright (C) Jeremy Allison 2010
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "printing.h"
  24 #include "smbd/smbd.h"
  25 #include "smbd/globals.h"
  26 #include "../libcli/smb/smb_common.h"
  27 #include "../librpc/gen_ndr/ndr_security.h"
  28 #include "../librpc/gen_ndr/ndr_smb2_lease_struct.h"
  29 #include "../lib/util/tevent_ntstatus.h"
  30 #include "messages.h"
  31
  32 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  33 {
  34         switch(in_oplock_level) {
  35         case SMB2_OPLOCK_LEVEL_NONE:
  36                 return NO_OPLOCK;
  37         case SMB2_OPLOCK_LEVEL_II:
  38                 return LEVEL_II_OPLOCK;
  39         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  40                 return EXCLUSIVE_OPLOCK;
  41         case SMB2_OPLOCK_LEVEL_BATCH:
  42                 return BATCH_OPLOCK;
  43         case SMB2_OPLOCK_LEVEL_LEASE:
  44                 return LEASE_OPLOCK;
  45         default:
  46                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  47                         "unknown level %u\n",
  48                         (unsigned int)in_oplock_level));
  49                 return NO_OPLOCK;
  50         }
  51 }
  52
  53 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  54 {
  55         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  56                 return SMB2_OPLOCK_LEVEL_BATCH;
  57         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  58                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  59         } else if (oplock_type == LEVEL_II_OPLOCK) {
  60                 return SMB2_OPLOCK_LEVEL_II;
  61         } else if (oplock_type == LEASE_OPLOCK) {
  62                 return SMB2_OPLOCK_LEVEL_LEASE;
  63         } else {
  64                 return SMB2_OPLOCK_LEVEL_NONE;
  65         }
  66 }
  67
  68 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  69                         struct tevent_context *ev,
  70                         struct smbd_smb2_request *smb2req,
  71                         uint8_t in_oplock_level,
  72                         uint32_t in_impersonation_level,
  73                         uint32_t in_desired_access,
  74                         uint32_t in_file_attributes,
  75                         uint32_t in_share_access,
  76                         uint32_t in_create_disposition,
  77                         uint32_t in_create_options,
  78                         const char *in_name,
  79                         struct smb2_create_blobs in_context_blobs);
  80 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  81                         TALLOC_CTX *mem_ctx,
  82                         uint8_t *out_oplock_level,
  83                         uint32_t *out_create_action,
  84                         struct timespec *out_creation_ts,
  85                         struct timespec *out_last_access_ts,
  86                         struct timespec *out_last_write_ts,
  87                         struct timespec *out_change_ts,
  88                         uint64_t *out_allocation_size,
  89                         uint64_t *out_end_of_file,
  90                         uint32_t *out_file_attributes,
  91                         uint64_t *out_file_id_persistent,
  92                         uint64_t *out_file_id_volatile,
  93                         struct smb2_create_blobs *out_context_blobs);
  94
  95 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  96 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  97 {
  98         const uint8_t *inbody;
  99         const struct iovec *indyniov;
 100         uint8_t in_oplock_level;
 101         uint32_t in_impersonation_level;
 102         uint32_t in_desired_access;
 103         uint32_t in_file_attributes;
 104         uint32_t in_share_access;
 105         uint32_t in_create_disposition;
 106         uint32_t in_create_options;
 107         uint16_t in_name_offset;
 108         uint16_t in_name_length;
 109         DATA_BLOB in_name_buffer;
 110         char *in_name_string;
 111         size_t in_name_string_size;
 112         uint32_t name_offset = 0;
 113         uint32_t name_available_length = 0;
 114         uint32_t in_context_offset;
 115         uint32_t in_context_length;
 116         DATA_BLOB in_context_buffer;
 117         struct smb2_create_blobs in_context_blobs;
 118         uint32_t context_offset = 0;
 119         uint32_t context_available_length = 0;
 120         uint32_t dyn_offset;
 121         NTSTATUS status;
 122         bool ok;
 123         struct tevent_req *tsubreq;
 124
 125         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 126         if (!NT_STATUS_IS_OK(status)) {
 127                 return smbd_smb2_request_error(smb2req, status);
 128         }
 129         inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
 130
 131         in_oplock_level         = CVAL(inbody, 0x03);
 132         in_impersonation_level  = IVAL(inbody, 0x04);
 133         in_desired_access       = IVAL(inbody, 0x18);
 134         in_file_attributes      = IVAL(inbody, 0x1C);
 135         in_share_access         = IVAL(inbody, 0x20);
 136         in_create_disposition   = IVAL(inbody, 0x24);
 137         in_create_options       = IVAL(inbody, 0x28);
 138         in_name_offset          = SVAL(inbody, 0x2C);
 139         in_name_length          = SVAL(inbody, 0x2E);
 140         in_context_offset       = IVAL(inbody, 0x30);
 141         in_context_length       = IVAL(inbody, 0x34);
 142
 143         /*
 144          * First check if the dynamic name and context buffers
 145          * are correctly specified.
 146          *
 147          * Note: That we don't check if the name and context buffers
 148          *       overlap
 149          */
 150
 151         dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
 152
 153         if (in_name_offset == 0 && in_name_length == 0) {
 154                 /* This is ok */
 155                 name_offset = 0;
 156         } else if (in_name_offset < dyn_offset) {
 157                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 158         } else {
 159                 name_offset = in_name_offset - dyn_offset;
 160         }
 161
 162         indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
 163
 164         if (name_offset > indyniov->iov_len) {
 165                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 166         }
 167
 168         name_available_length = indyniov->iov_len - name_offset;
 169
 170         if (in_name_length > name_available_length) {
 171                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 172         }
 173
 174         in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
 175         in_name_buffer.length = in_name_length;
 176
 177         if (in_context_offset == 0 && in_context_length == 0) {
 178                 /* This is ok */
 179                 context_offset = 0;
 180         } else if (in_context_offset < dyn_offset) {
 181                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 182         } else {
 183                 context_offset = in_context_offset - dyn_offset;
 184         }
 185
 186         if (context_offset > indyniov->iov_len) {
 187                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 188         }
 189
 190         context_available_length = indyniov->iov_len - context_offset;
 191
 192         if (in_context_length > context_available_length) {
 193                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 194         }
 195
 196         in_context_buffer.data = (uint8_t *)indyniov->iov_base +
 197                 context_offset;
 198         in_context_buffer.length = in_context_length;
 199
 200         /*
 201          * Now interpret the name and context buffers
 202          */
 203
 204         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 205                                    in_name_buffer.data,
 206                                    in_name_buffer.length,
 207                                    &in_name_string,
 208                                    &in_name_string_size);
 209         if (!ok) {
 210                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 211         }
 212
 213         if (in_name_buffer.length == 0) {
 214                 in_name_string_size = 0;
 215         }
 216
 217         if (strlen(in_name_string) != in_name_string_size) {
 218                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 219         }
 220
 221         ZERO_STRUCT(in_context_blobs);
 222         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 223         if (!NT_STATUS_IS_OK(status)) {
 224                 return smbd_smb2_request_error(smb2req, status);
 225         }
 226
 227         tsubreq = smbd_smb2_create_send(smb2req,
 228                                        smb2req->sconn->ev_ctx,
 229                                        smb2req,
 230                                        in_oplock_level,
 231                                        in_impersonation_level,
 232                                        in_desired_access,
 233                                        in_file_attributes,
 234                                        in_share_access,
 235                                        in_create_disposition,
 236                                        in_create_options,
 237                                        in_name_string,
 238                                        in_context_blobs);
 239         if (tsubreq == NULL) {
 240                 smb2req->subreq = NULL;
 241                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 242         }
 243         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 244
 245         return smbd_smb2_request_pending_queue(smb2req, tsubreq, 500);
 246 }
 247
 248 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 249 {
 250         uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
 251         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 252 }
 253
 254 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 255 {
 256         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 257                                         struct smbd_smb2_request);
 258         DATA_BLOB outbody;
 259         DATA_BLOB outdyn;
 260         uint8_t out_oplock_level = 0;
 261         uint32_t out_create_action = 0;
 262         connection_struct *conn = smb2req->tcon->compat;
 263         struct timespec out_creation_ts = { 0, };
 264         struct timespec out_last_access_ts = { 0, };
 265         struct timespec out_last_write_ts = { 0, };
 266         struct timespec out_change_ts = { 0, };
 267         uint64_t out_allocation_size = 0;
 268         uint64_t out_end_of_file = 0;
 269         uint32_t out_file_attributes = 0;
 270         uint64_t out_file_id_persistent = 0;
 271         uint64_t out_file_id_volatile = 0;
 272         struct smb2_create_blobs out_context_blobs;
 273         DATA_BLOB out_context_buffer;
 274         uint16_t out_context_buffer_offset = 0;
 275         NTSTATUS status;
 276         NTSTATUS error; /* transport error */
 277
 278         status = smbd_smb2_create_recv(tsubreq,
 279                                        smb2req,
 280                                        &out_oplock_level,
 281                                        &out_create_action,
 282                                        &out_creation_ts,
 283                                        &out_last_access_ts,
 284                                        &out_last_write_ts,
 285                                        &out_change_ts,
 286                                        &out_allocation_size,
 287                                        &out_end_of_file,
 288                                        &out_file_attributes,
 289                                        &out_file_id_persistent,
 290                                        &out_file_id_volatile,
 291                                        &out_context_blobs);
 292         if (!NT_STATUS_IS_OK(status)) {
 293                 error = smbd_smb2_request_error(smb2req, status);
 294                 if (!NT_STATUS_IS_OK(error)) {
 295                         smbd_server_connection_terminate(smb2req->xconn,
 296                                                          nt_errstr(error));
 297                         return;
 298                 }
 299                 return;
 300         }
 301
 302         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 303         if (!NT_STATUS_IS_OK(status)) {
 304                 error = smbd_smb2_request_error(smb2req, status);
 305                 if (!NT_STATUS_IS_OK(error)) {
 306                         smbd_server_connection_terminate(smb2req->xconn,
 307                                                          nt_errstr(error));
 308                         return;
 309                 }
 310                 return;
 311         }
 312
 313         if (out_context_buffer.length > 0) {
 314                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 315         }
 316
 317         outbody = smbd_smb2_generate_outbody(smb2req, 0x58);
 318         if (outbody.data == NULL) {
 319                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 320                 if (!NT_STATUS_IS_OK(error)) {
 321                         smbd_server_connection_terminate(smb2req->xconn,
 322                                                          nt_errstr(error));
 323                         return;
 324                 }
 325                 return;
 326         }
 327
 328         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 329         SCVAL(outbody.data, 0x02,
 330               out_oplock_level);                /* oplock level */
 331         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 332         SIVAL(outbody.data, 0x04,
 333               out_create_action);               /* create action */
 334         put_long_date_timespec(conn->ts_res,
 335               (char *)outbody.data + 0x08,
 336               out_creation_ts);                 /* creation time */
 337         put_long_date_timespec(conn->ts_res,
 338               (char *)outbody.data + 0x10,
 339               out_last_access_ts);              /* last access time */
 340         put_long_date_timespec(conn->ts_res,
 341               (char *)outbody.data + 0x18,
 342               out_last_write_ts);               /* last write time */
 343         put_long_date_timespec(conn->ts_res,
 344               (char *)outbody.data + 0x20,
 345               out_change_ts);                   /* change time */
 346         SBVAL(outbody.data, 0x28,
 347               out_allocation_size);             /* allocation size */
 348         SBVAL(outbody.data, 0x30,
 349               out_end_of_file);                 /* end of file */
 350         SIVAL(outbody.data, 0x38,
 351               out_file_attributes);             /* file attributes */
 352         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 353         SBVAL(outbody.data, 0x40,
 354               out_file_id_persistent);          /* file id (persistent) */
 355         SBVAL(outbody.data, 0x48,
 356               out_file_id_volatile);            /* file id (volatile) */
 357         SIVAL(outbody.data, 0x50,
 358               out_context_buffer_offset);       /* create contexts offset */
 359         SIVAL(outbody.data, 0x54,
 360               out_context_buffer.length);       /* create contexts length */
 361
 362         outdyn = out_context_buffer;
 363
 364         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 365         if (!NT_STATUS_IS_OK(error)) {
 366                 smbd_server_connection_terminate(smb2req->xconn,
 367                                                  nt_errstr(error));
 368                 return;
 369         }
 370 }
 371
 372 static bool smb2_lease_key_valid(const struct smb2_lease_key *key)
 373 {
 374         return ((key->data[0] != 0) || (key->data[1] != 0));
 375 }
 376
 377 static NTSTATUS smbd_smb2_create_durable_lease_check(struct smb_request *smb1req,
 378         const char *requested_filename, const struct files_struct *fsp,
 379         const struct smb2_lease *lease_ptr)
 380 {
 381         struct smb_filename *smb_fname = NULL;
 382         uint32_t ucf_flags;
 383         NTSTATUS status;
 384
 385         if (lease_ptr == NULL) {
 386                 if (fsp->oplock_type != LEASE_OPLOCK) {
 387                         return NT_STATUS_OK;
 388                 }
 389                 DEBUG(10, ("Reopened file has lease, but no lease "
 390                            "requested\n"));
 391                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 392         }
 393
 394         if (fsp->oplock_type != LEASE_OPLOCK) {
 395                 DEBUG(10, ("Lease requested, but reopened file has no "
 396                            "lease\n"));
 397                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 398         }
 399
 400         if (!smb2_lease_key_equal(&lease_ptr->lease_key,
 401                                   &fsp->lease->lease.lease_key)) {
 402                 DEBUG(10, ("Different lease key requested than found "
 403                            "in reopened file\n"));
 404                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 405         }
 406
 407         ucf_flags = filename_create_ucf_flags(smb1req, FILE_OPEN);
 408         status = filename_convert(talloc_tos(), fsp->conn,
 409                                   requested_filename, ucf_flags,
 410                                   NULL, &smb_fname);
 411         if (!NT_STATUS_IS_OK(status)) {
 412                 DEBUG(10, ("filename_convert returned %s\n",
 413                            nt_errstr(status)));
 414                 return status;
 415         }
 416
 417         if (!strequal(fsp->fsp_name->base_name, smb_fname->base_name)) {
 418                 DEBUG(10, ("Lease requested for file %s, reopened file "
 419                            "is named %s\n", smb_fname->base_name,
 420                            fsp->fsp_name->base_name));
 421                 TALLOC_FREE(smb_fname);
 422                 return NT_STATUS_INVALID_PARAMETER;
 423         }
 424
 425         TALLOC_FREE(smb_fname);
 426
 427         return NT_STATUS_OK;
 428 }
 429
 430 struct smbd_smb2_create_state {
 431         struct tevent_context *ev;
 432         struct smbd_smb2_request *smb2req;
 433         struct smb_request *smb1req;
 434         bool open_was_deferred;
 435         struct tevent_immediate *im;
 436         struct timeval request_time;
 437         struct file_id id;
 438         struct deferred_open_record *open_rec;
 439         files_struct *result;
 440         bool replay_operation;
 441         uint8_t in_oplock_level;
 442         uint32_t in_create_disposition;
 443         int requested_oplock_level;
 444         int info;
 445         uint8_t out_oplock_level;
 446         uint32_t out_create_action;
 447         struct timespec out_creation_ts;
 448         struct timespec out_last_access_ts;
 449         struct timespec out_last_write_ts;
 450         struct timespec out_change_ts;
 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 void smbd_smb2_create_finish(struct tevent_req *req);
 460
 461 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 462                         struct tevent_context *ev,
 463                         struct smbd_smb2_request *smb2req,
 464                         uint8_t in_oplock_level,
 465                         uint32_t in_impersonation_level,
 466                         uint32_t in_desired_access,
 467                         uint32_t in_file_attributes,
 468                         uint32_t in_share_access,
 469                         uint32_t in_create_disposition,
 470                         uint32_t in_create_options,
 471                         const char *in_name,
 472                         struct smb2_create_blobs in_context_blobs)
 473 {
 474         struct tevent_req *req = NULL;
 475         struct smbd_smb2_create_state *state = NULL;
 476         NTSTATUS status;
 477         struct smb_request *smb1req = NULL;
 478         struct smb2_create_blob *dhnc = NULL;
 479         struct smb2_create_blob *dh2c = NULL;
 480         struct smb2_create_blob *dhnq = NULL;
 481         struct smb2_create_blob *dh2q = NULL;
 482         struct smb2_create_blob *rqls = NULL;
 483         char *fname = NULL;
 484         struct smb2_create_blob *exta = NULL;
 485         struct ea_list *ea_list = NULL;
 486         struct smb2_create_blob *mxac = NULL;
 487         NTTIME max_access_time = 0;
 488         struct smb2_create_blob *secd = NULL;
 489         struct security_descriptor *sec_desc = NULL;
 490         struct smb2_create_blob *alsi = NULL;
 491         uint64_t allocation_size = 0;
 492         struct smb2_create_blob *twrp = NULL;
 493         struct smb2_create_blob *qfid = NULL;
 494         struct GUID _create_guid = GUID_zero();
 495         struct GUID *create_guid = NULL;
 496         bool update_open = false;
 497         bool durable_requested = false;
 498         uint32_t durable_timeout_msec = 0;
 499         bool do_durable_reconnect = false;
 500         uint64_t persistent_id = 0;
 501         struct smb2_lease lease;
 502         struct smb2_lease *lease_ptr = NULL;
 503         ssize_t lease_len = -1;
 504         bool need_replay_cache = false;
 505         struct smbXsrv_open *op = NULL;
 506 #if 0
 507         struct smb2_create_blob *svhdx = NULL;
 508 #endif
 509
 510         req = tevent_req_create(mem_ctx, &state,
 511                                 struct smbd_smb2_create_state);
 512         if (req == NULL) {
 513                 return NULL;
 514         }
 515         *state = (struct smbd_smb2_create_state) {
 516                 .ev = ev,
 517                 .smb2req = smb2req,
 518                 .in_oplock_level = in_oplock_level,
 519                 .in_create_disposition = in_create_disposition,
 520         };
 521
 522         smb1req = smbd_smb2_fake_smb_request(smb2req);
 523         if (tevent_req_nomem(smb1req, req)) {
 524                 return tevent_req_post(req, state->ev);
 525         }
 526         state->smb1req = smb1req;
 527
 528         if (smb2req->subreq == NULL) {
 529                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 530                         in_name));
 531         } else {
 532                 struct smbd_smb2_create_state *old_state = tevent_req_data(
 533                         smb2req->subreq, struct smbd_smb2_create_state);
 534
 535                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 536                         in_name ));
 537
 538                 state->id = old_state->id;
 539                 state->request_time = old_state->request_time;
 540                 state->open_rec = talloc_move(state, &old_state->open_rec);
 541                 state->open_was_deferred = old_state->open_was_deferred;
 542         }
 543
 544         TALLOC_FREE(smb2req->subreq);
 545         smb2req->subreq = req;
 546
 547         if (lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
 548                 state->requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 549         } else {
 550                 state->requested_oplock_level = state->in_oplock_level;
 551         }
 552
 553         /* these are ignored for SMB2 */
 554         in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 555         in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 556
 557         in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 558
 559         fname = talloc_strdup(state, in_name);
 560         if (tevent_req_nomem(fname, req)) {
 561                 return tevent_req_post(req, state->ev);
 562         }
 563
 564         state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
 565         if (tevent_req_nomem(state->out_context_blobs, req)) {
 566                 return tevent_req_post(req, state->ev);
 567         }
 568
 569         dhnq = smb2_create_blob_find(&in_context_blobs,
 570                                      SMB2_CREATE_TAG_DHNQ);
 571         dhnc = smb2_create_blob_find(&in_context_blobs,
 572                                      SMB2_CREATE_TAG_DHNC);
 573         dh2q = smb2_create_blob_find(&in_context_blobs,
 574                                      SMB2_CREATE_TAG_DH2Q);
 575         dh2c = smb2_create_blob_find(&in_context_blobs,
 576                                      SMB2_CREATE_TAG_DH2C);
 577         if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
 578                 rqls = smb2_create_blob_find(&in_context_blobs,
 579                                              SMB2_CREATE_TAG_RQLS);
 580         }
 581
 582         if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
 583             (dh2q && dh2c))
 584         {
 585                 /* not both are allowed at the same time */
 586                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 587                 return tevent_req_post(req, state->ev);
 588         }
 589
 590         if (dhnc) {
 591                 uint32_t num_blobs_allowed;
 592
 593                 if (dhnc->data.length != 16) {
 594                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 595                         return tevent_req_post(req, state->ev);
 596                 }
 597
 598                 /*
 599                  * According to MS-SMB2: 3.3.5.9.7, "Handling the
 600                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
 601                  * we should ignore an additional dhnq blob, but fail
 602                  * the request (with status OBJECT_NAME_NOT_FOUND) if
 603                  * any other extra create blob has been provided.
 604                  *
 605                  * (Note that the cases of an additional dh2q or dh2c blob
 606                  *  which require a different error code, have been treated
 607                  *  above.)
 608                  */
 609
 610                 if (dhnq) {
 611                         num_blobs_allowed = 2;
 612                 } else {
 613                         num_blobs_allowed = 1;
 614                 }
 615
 616                 if (rqls != NULL) {
 617                         num_blobs_allowed += 1;
 618                 }
 619
 620                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 621                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 622                         return tevent_req_post(req, state->ev);
 623                 }
 624         }
 625
 626         if (dh2c) {
 627                 uint32_t num_blobs_allowed;
 628
 629                 if (dh2c->data.length != 36) {
 630                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 631                         return tevent_req_post(req, state->ev);
 632                 }
 633
 634                 /*
 635                  * According to MS-SMB2: 3.3.5.9.12, "Handling the
 636                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
 637                  * we should fail the request with status
 638                  * OBJECT_NAME_NOT_FOUND if any other create blob has been
 639                  * provided.
 640                  *
 641                  * (Note that the cases of an additional dhnq, dhnc or dh2q
 642                  *  blob which require a different error code, have been
 643                  *  treated above.)
 644                  */
 645
 646                 num_blobs_allowed = 1;
 647
 648                 if (rqls != NULL) {
 649                         num_blobs_allowed += 1;
 650                 }
 651
 652                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 653                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 654                         return tevent_req_post(req, state->ev);
 655                 }
 656         }
 657
 658         if (IS_IPC(smb1req->conn)) {
 659                 const char *pipe_name = in_name;
 660
 661                 if (dhnc || dh2c) {
 662                         /* durable handles are not supported on IPC$ */
 663                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 664                         return tevent_req_post(req, state->ev);
 665                 }
 666
 667                 if (!lp_nt_pipe_support()) {
 668                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 669                         return tevent_req_post(req, state->ev);
 670                 }
 671
 672                 status = open_np_file(smb1req, pipe_name, &state->result);
 673                 if (!NT_STATUS_IS_OK(status)) {
 674                         tevent_req_nterror(req, status);
 675                         return tevent_req_post(req, state->ev);
 676                 }
 677                 state->info = FILE_WAS_OPENED;
 678
 679                 smbd_smb2_create_finish(req);
 680                 return req;
 681
 682         } else if (CAN_PRINT(smb1req->conn)) {
 683                 if (dhnc || dh2c) {
 684                         /* durable handles are not supported on printers */
 685                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 686                         return tevent_req_post(req, state->ev);
 687                 }
 688
 689                 status = file_new(smb1req, smb1req->conn, &state->result);
 690                 if(!NT_STATUS_IS_OK(status)) {
 691                         tevent_req_nterror(req, status);
 692                         return tevent_req_post(req, state->ev);
 693                 }
 694
 695                 status = print_spool_open(state->result, in_name,
 696                                           smb1req->vuid);
 697                 if (!NT_STATUS_IS_OK(status)) {
 698                         file_free(smb1req, state->result);
 699                         tevent_req_nterror(req, status);
 700                         return tevent_req_post(req, state->ev);
 701                 }
 702                 state->info = FILE_WAS_CREATED;
 703
 704                 smbd_smb2_create_finish(req);
 705                 return req;
 706         }
 707
 708         exta = smb2_create_blob_find(&in_context_blobs,
 709                                      SMB2_CREATE_TAG_EXTA);
 710         mxac = smb2_create_blob_find(&in_context_blobs,
 711                                      SMB2_CREATE_TAG_MXAC);
 712         secd = smb2_create_blob_find(&in_context_blobs,
 713                                      SMB2_CREATE_TAG_SECD);
 714         alsi = smb2_create_blob_find(&in_context_blobs,
 715                                      SMB2_CREATE_TAG_ALSI);
 716         twrp = smb2_create_blob_find(&in_context_blobs,
 717                                      SMB2_CREATE_TAG_TWRP);
 718         qfid = smb2_create_blob_find(&in_context_blobs,
 719                                      SMB2_CREATE_TAG_QFID);
 720 #if 0
 721         if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
 722                 /*
 723                  * This was introduced with SMB3_02
 724                  */
 725                 svhdx = smb2_create_blob_find(&in_context_blobs,
 726                                               SVHDX_OPEN_DEVICE_CONTEXT);
 727         }
 728 #endif
 729
 730         if (exta) {
 731                 if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
 732                         tevent_req_nterror(req,
 733                                            NT_STATUS_EAS_NOT_SUPPORTED);
 734                         return tevent_req_post(req, state->ev);
 735                 }
 736
 737                 ea_list = read_nttrans_ea_list(mem_ctx,
 738                                                (const char *)exta->data.data, exta->data.length);
 739                 if (!ea_list) {
 740                         DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 741                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 742                         return tevent_req_post(req, state->ev);
 743                 }
 744
 745                 /*
 746                  * NB. When SMB2+ unix extensions are added,
 747                  * we need to relax this check in invalid
 748                  * names - we used to not do this if
 749                  * lp_posix_pathnames() was false.
 750                  */
 751                 if (ea_list_has_invalid_name(ea_list)) {
 752                         tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
 753                         return tevent_req_post(req, state->ev);
 754                 }
 755         }
 756
 757         if (mxac) {
 758                 if (mxac->data.length == 0) {
 759                         max_access_time = 0;
 760                 } else if (mxac->data.length == 8) {
 761                         max_access_time = BVAL(mxac->data.data, 0);
 762                 } else {
 763                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 764                         return tevent_req_post(req, state->ev);
 765                 }
 766         }
 767
 768         if (secd) {
 769                 enum ndr_err_code ndr_err;
 770
 771                 sec_desc = talloc_zero(state, struct security_descriptor);
 772                 if (tevent_req_nomem(sec_desc, req)) {
 773                         return tevent_req_post(req, state->ev);
 774                 }
 775
 776                 ndr_err = ndr_pull_struct_blob(&secd->data,
 777                                                sec_desc, sec_desc,
 778                                                (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 779                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 780                         DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 781                                  ndr_errstr(ndr_err)));
 782                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 783                         return tevent_req_post(req, state->ev);
 784                 }
 785         }
 786
 787         if (dhnq) {
 788                 if (dhnq->data.length != 16) {
 789                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 790                         return tevent_req_post(req, state->ev);
 791                 }
 792
 793                 if (dh2q) {
 794                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 795                         return tevent_req_post(req, state->ev);
 796                 }
 797
 798                 /*
 799                  * durable handle request is processed below.
 800                  */
 801                 durable_requested = true;
 802                 /*
 803                  * Set the timeout to 16 mins.
 804                  *
 805                  * TODO: test this against Windows 2012
 806                  *       as the default for durable v2 is 1 min.
 807                  */
 808                 durable_timeout_msec = (16*60*1000);
 809         }
 810
 811         if (dh2q) {
 812                 const uint8_t *p = dh2q->data.data;
 813                 uint32_t durable_v2_timeout = 0;
 814                 DATA_BLOB create_guid_blob;
 815                 const uint8_t *hdr;
 816                 uint32_t flags;
 817
 818                 if (dh2q->data.length != 32) {
 819                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 820                         return tevent_req_post(req, state->ev);
 821                 }
 822
 823                 if (dhnq) {
 824                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 825                         return tevent_req_post(req, state->ev);
 826                 }
 827
 828                 durable_v2_timeout = IVAL(p, 0);
 829                 create_guid_blob = data_blob_const(p + 16, 16);
 830
 831                 status = GUID_from_ndr_blob(&create_guid_blob,
 832                                             &_create_guid);
 833                 if (tevent_req_nterror(req, status)) {
 834                         return tevent_req_post(req, state->ev);
 835                 }
 836                 create_guid = &_create_guid;
 837                 /*
 838                  * we need to store the create_guid later
 839                  */
 840                 update_open = true;
 841
 842                 /*
 843                  * And we need to create a cache for replaying the
 844                  * create.
 845                  */
 846                 need_replay_cache = true;
 847
 848                 /*
 849                  * durable handle v2 request processed below
 850                  */
 851                 durable_requested = true;
 852                 durable_timeout_msec = durable_v2_timeout;
 853                 if (durable_timeout_msec == 0) {
 854                         /*
 855                          * Set the timeout to 1 min as default.
 856                          *
 857                          * This matches Windows 2012.
 858                          */
 859                         durable_timeout_msec = (60*1000);
 860                 }
 861
 862                 /*
 863                  * Check for replay operation.
 864                  * Only consider it when we have dh2q.
 865                  * If we do not have a replay operation, verify that
 866                  * the create_guid is not cached for replay.
 867                  */
 868                 hdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
 869                 flags = IVAL(hdr, SMB2_HDR_FLAGS);
 870                 state->replay_operation =
 871                         flags & SMB2_HDR_FLAG_REPLAY_OPERATION;
 872
 873                 status = smb2srv_open_lookup_replay_cache(
 874                         smb2req->xconn, create_guid,
 875                         0 /* now */, &op);
 876
 877                 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
 878                         state->replay_operation = false;
 879                 } else if (tevent_req_nterror(req, status)) {
 880                         DBG_WARNING("smb2srv_open_lookup_replay_cache "
 881                                     "failed: %s\n", nt_errstr(status));
 882                         return tevent_req_post(req, state->ev);
 883                 } else if (!state->replay_operation) {
 884                         /*
 885                          * If a create without replay operation flag
 886                          * is sent but with a create_guid that is
 887                          * currently in the replay cache -- fail.
 888                          */
 889                         status = NT_STATUS_DUPLICATE_OBJECTID;
 890                         (void)tevent_req_nterror(req, status);
 891                         return tevent_req_post(req, state->ev);
 892                 }
 893         }
 894
 895         if (dhnc) {
 896                 persistent_id = BVAL(dhnc->data.data, 0);
 897
 898                 do_durable_reconnect = true;
 899         }
 900
 901         if (dh2c) {
 902                 const uint8_t *p = dh2c->data.data;
 903                 DATA_BLOB create_guid_blob;
 904
 905                 persistent_id = BVAL(p, 0);
 906                 create_guid_blob = data_blob_const(p + 16, 16);
 907
 908                 status = GUID_from_ndr_blob(&create_guid_blob,
 909                                             &_create_guid);
 910                 if (tevent_req_nterror(req, status)) {
 911                         return tevent_req_post(req, state->ev);
 912                 }
 913                 create_guid = &_create_guid;
 914
 915                 do_durable_reconnect = true;
 916         }
 917
 918         if (alsi) {
 919                 if (alsi->data.length != 8) {
 920                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 921                         return tevent_req_post(req, state->ev);
 922                 }
 923                 allocation_size = BVAL(alsi->data.data, 0);
 924         }
 925
 926         if (twrp) {
 927                 NTTIME nttime;
 928                 time_t t;
 929                 struct tm *tm;
 930
 931                 if (twrp->data.length != 8) {
 932                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 933                         return tevent_req_post(req, state->ev);
 934                 }
 935
 936                 nttime = BVAL(twrp->data.data, 0);
 937                 t = nt_time_to_unix(nttime);
 938                 tm = gmtime(&t);
 939
 940                 TALLOC_FREE(fname);
 941                 fname = talloc_asprintf(state,
 942                                         "%s\\@GMT-%04u.%02u.%02u-%02u.%02u.%02u",
 943                                         in_name,
 944                                         tm->tm_year + 1900,
 945                                         tm->tm_mon + 1,
 946                                         tm->tm_mday,
 947                                         tm->tm_hour,
 948                                         tm->tm_min,
 949                                         tm->tm_sec);
 950                 if (tevent_req_nomem(fname, req)) {
 951                         return tevent_req_post(req, state->ev);
 952                 }
 953                 /*
 954                  * Tell filename_create_ucf_flags() this
 955                  * is an @GMT path.
 956                  */
 957                 smb1req->flags2 |= FLAGS2_REPARSE_PATH;
 958         }
 959
 960         if (qfid) {
 961                 if (qfid->data.length != 0) {
 962                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 963                         return tevent_req_post(req, state->ev);
 964                 }
 965         }
 966
 967         if (rqls) {
 968                 lease_len = smb2_lease_pull(
 969                         rqls->data.data, rqls->data.length, &lease);
 970                 if (lease_len == -1) {
 971                         tevent_req_nterror(
 972                                 req, NT_STATUS_INVALID_PARAMETER);
 973                         return tevent_req_post(req, state->ev);
 974                 }
 975                 lease_ptr = &lease;
 976
 977                 if (DEBUGLEVEL >= 10) {
 978                         DEBUG(10, ("Got lease request size %d\n",
 979                                    (int)lease_len));
 980                         NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
 981                 }
 982
 983                 if (!smb2_lease_key_valid(&lease.lease_key)) {
 984                         lease_ptr = NULL;
 985                         state->requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 986                 }
 987
 988                 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
 989                     (lease.lease_version != 1)) {
 990                         DEBUG(10, ("v2 lease key only for SMB3\n"));
 991                         lease_ptr = NULL;
 992                 }
 993
 994                 /*
 995                  * Replay with a lease is only allowed if the
 996                  * established open carries a lease with the
 997                  * same lease key.
 998                  */
 999                 if (state->replay_operation) {
1000                         struct smb2_lease *op_ls =
1001                                 &op->compat->lease->lease;
1002                         int op_oplock = op->compat->oplock_type;
1003
1004                         if (map_samba_oplock_levels_to_smb2(op_oplock)
1005                             != SMB2_OPLOCK_LEVEL_LEASE)
1006                         {
1007                                 status = NT_STATUS_ACCESS_DENIED;
1008                                 (void)tevent_req_nterror(req, status);
1009                                 return tevent_req_post(req, state->ev);
1010                         }
1011                         if (!smb2_lease_key_equal(&lease.lease_key,
1012                                                   &op_ls->lease_key))
1013                         {
1014                                 status = NT_STATUS_ACCESS_DENIED;
1015                                 (void)tevent_req_nterror(req, status);
1016                                 return tevent_req_post(req, state->ev);
1017                         }
1018                 }
1019         }
1020
1021         DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
1022
1023         /*
1024          * For the backend file open procedure, there are
1025          * three possible modes: replay operation (in which case
1026          * there is nothing else to do), durable_reconnect or
1027          * new open.
1028          */
1029         if (state->replay_operation) {
1030                 state->result = op->compat;
1031                 state->result->op = op;
1032                 update_open = false;
1033                 state->info = op->create_action;
1034         } else if (do_durable_reconnect) {
1035                 DATA_BLOB new_cookie = data_blob_null;
1036                 NTTIME now = timeval_to_nttime(&smb2req->request_time);
1037
1038                 status = smb2srv_open_recreate(smb2req->xconn,
1039                                                smb1req->conn->session_info,
1040                                                persistent_id, create_guid,
1041                                                now, &op);
1042                 if (!NT_STATUS_IS_OK(status)) {
1043                         DEBUG(3, ("smbd_smb2_create_send: "
1044                                   "smb2srv_open_recreate failed: %s\n",
1045                                   nt_errstr(status)));
1046                         tevent_req_nterror(req, status);
1047                         return tevent_req_post(req, state->ev);
1048                 }
1049
1050                 DEBUG(10, ("smb2_create_send: %s to recreate the "
1051                            "smb2srv_open struct for a durable handle.\n",
1052                            op->global->durable ? "succeeded" : "failed"));
1053
1054                 if (!op->global->durable) {
1055                         talloc_free(op);
1056                         tevent_req_nterror(req,
1057                                            NT_STATUS_OBJECT_NAME_NOT_FOUND);
1058                         return tevent_req_post(req, state->ev);
1059                 }
1060
1061                 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
1062                                                    smb1req,
1063                                                    op, /* smbXsrv_open input */
1064                                                    op->global->backend_cookie,
1065                                                    op, /* TALLOC_CTX */
1066                                                    &state->result,
1067                                                    &new_cookie);
1068                 if (!NT_STATUS_IS_OK(status)) {
1069                         NTSTATUS return_status;
1070
1071                         return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1072
1073                         DEBUG(3, ("smbd_smb2_create_send: "
1074                                   "durable_reconnect failed: %s => %s\n",
1075                                   nt_errstr(status),
1076                                   nt_errstr(return_status)));
1077
1078                         tevent_req_nterror(req, return_status);
1079                         return tevent_req_post(req, state->ev);
1080                 }
1081
1082                 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
1083                            (unsigned)state->result->oplock_type, lease_ptr));
1084
1085                 status = smbd_smb2_create_durable_lease_check(
1086                         smb1req, fname, state->result, lease_ptr);
1087                 if (!NT_STATUS_IS_OK(status)) {
1088                         close_file(smb1req, state->result, SHUTDOWN_CLOSE);
1089                         tevent_req_nterror(req, status);
1090                         return tevent_req_post(req, state->ev);
1091                 }
1092
1093                 data_blob_free(&op->global->backend_cookie);
1094                 op->global->backend_cookie = new_cookie;
1095
1096                 op->status = NT_STATUS_OK;
1097                 op->global->disconnect_time = 0;
1098
1099                 /* save the timout for later update */
1100                 durable_timeout_msec = op->global->durable_timeout_msec;
1101
1102                 update_open = true;
1103
1104                 state->info = FILE_WAS_OPENED;
1105         } else {
1106                 struct smb_filename *smb_fname = NULL;
1107                 uint32_t ucf_flags;
1108
1109                 if (state->requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1110                         if (lease_ptr == NULL) {
1111                                 state->requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1112                         }
1113                 } else {
1114                         lease_ptr = NULL;
1115                 }
1116
1117                 /*
1118                  * For a DFS path the function parse_dfs_path()
1119                  * will do the path processing.
1120                  */
1121
1122                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1123                         /* convert '\\' into '/' */
1124                         status = check_path_syntax(fname);
1125                         if (!NT_STATUS_IS_OK(status)) {
1126                                 tevent_req_nterror(req, status);
1127                                 return tevent_req_post(req, state->ev);
1128                         }
1129                 }
1130
1131                 ucf_flags = filename_create_ucf_flags(
1132                         smb1req, state->in_create_disposition);
1133                 status = filename_convert(req,
1134                                           smb1req->conn,
1135                                           fname,
1136                                           ucf_flags,
1137                                           NULL, /* ppath_contains_wcards */
1138                                           &smb_fname);
1139                 if (!NT_STATUS_IS_OK(status)) {
1140                         tevent_req_nterror(req, status);
1141                         return tevent_req_post(req, state->ev);
1142                 }
1143
1144                 /*
1145                  * MS-SMB2: 2.2.13 SMB2 CREATE Request
1146                  * ImpersonationLevel ... MUST contain one of the
1147                  * following values. The server MUST validate this
1148                  * field, but otherwise ignore it.
1149                  *
1150                  * NB. The source4/torture/smb2/durable_open.c test
1151                  * shows this check is only done on real opens, not
1152                  * on durable handle-reopens.
1153                  */
1154
1155                 if (in_impersonation_level >
1156                     SMB2_IMPERSONATION_DELEGATE) {
1157                         tevent_req_nterror(req,
1158                                            NT_STATUS_BAD_IMPERSONATION_LEVEL);
1159                         return tevent_req_post(req, state->ev);
1160                 }
1161
1162                 /*
1163                  * We know we're going to do a local open, so now
1164                  * we must be protocol strict. JRA.
1165                  *
1166                  * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1167                  * If the file name length is greater than zero and the
1168                  * first character is a path separator character, the
1169                  * server MUST fail the request with
1170                  * STATUS_INVALID_PARAMETER.
1171                  */
1172                 if (in_name[0] == '\\' || in_name[0] == '/') {
1173                         tevent_req_nterror(req,
1174                                            NT_STATUS_INVALID_PARAMETER);
1175                         return tevent_req_post(req, state->ev);
1176                 }
1177
1178                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1179                                              smb1req,
1180                                              0, /* root_dir_fid */
1181                                              smb_fname,
1182                                              in_desired_access,
1183                                              in_share_access,
1184                                              state->in_create_disposition,
1185                                              in_create_options,
1186                                              in_file_attributes,
1187                                              map_smb2_oplock_levels_to_samba(
1188                                                      state->requested_oplock_level),
1189                                              lease_ptr,
1190                                              allocation_size,
1191                                              0, /* private_flags */
1192                                              sec_desc,
1193                                              ea_list,
1194                                              &state->result,
1195                                              &state->info,
1196                                              &in_context_blobs,
1197                                              state->out_context_blobs);
1198                 if (!NT_STATUS_IS_OK(status)) {
1199                         if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1200                                 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1201                                 return req;
1202                         }
1203                         tevent_req_nterror(req, status);
1204                         return tevent_req_post(req, state->ev);
1205                 }
1206                 op = state->result->op;
1207         }
1208
1209         /*
1210          * here we have op == state->result->op
1211          */
1212
1213         DEBUG(10, ("smbd_smb2_create_send: "
1214                    "response construction phase\n"));
1215
1216         if (mxac) {
1217                 NTTIME last_write_time;
1218
1219                 last_write_time = unix_timespec_to_nt_time(
1220                         state->result->fsp_name->st.st_ex_mtime);
1221                 if (last_write_time != max_access_time) {
1222                         uint8_t p[8];
1223                         uint32_t max_access_granted;
1224                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1225
1226                         status = smbd_calculate_access_mask(smb1req->conn,
1227                                                             state->result->fsp_name,
1228                                                             false,
1229                                                             SEC_FLAG_MAXIMUM_ALLOWED,
1230                                                             &max_access_granted);
1231
1232                         SIVAL(p, 0, NT_STATUS_V(status));
1233                         SIVAL(p, 4, max_access_granted);
1234
1235                         status = smb2_create_blob_add(
1236                                 state->out_context_blobs,
1237                                 state->out_context_blobs,
1238                                 SMB2_CREATE_TAG_MXAC,
1239                                 blob);
1240                         if (!NT_STATUS_IS_OK(status)) {
1241                                 tevent_req_nterror(req, status);
1242                                 return tevent_req_post(req, state->ev);
1243                         }
1244                 }
1245         }
1246
1247         if (!state->replay_operation && durable_requested &&
1248             (fsp_lease_type(state->result) & SMB2_LEASE_HANDLE))
1249         {
1250                 status = SMB_VFS_DURABLE_COOKIE(state->result,
1251                                                 op,
1252                                                 &op->global->backend_cookie);
1253                 if (!NT_STATUS_IS_OK(status)) {
1254                         op->global->backend_cookie = data_blob_null;
1255                 }
1256         }
1257         if (!state->replay_operation && op->global->backend_cookie.length > 0)
1258         {
1259                 update_open = true;
1260
1261                 op->global->durable = true;
1262                 op->global->durable_timeout_msec = durable_timeout_msec;
1263         }
1264
1265         if (update_open) {
1266                 op->global->create_guid = _create_guid;
1267                 if (need_replay_cache) {
1268                         op->flags |= SMBXSRV_OPEN_NEED_REPLAY_CACHE;
1269                 }
1270
1271                 status = smbXsrv_open_update(op);
1272                 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1273                            "returned %s\n",
1274                            nt_errstr(status)));
1275                 if (!NT_STATUS_IS_OK(status)) {
1276                         tevent_req_nterror(req, status);
1277                         return tevent_req_post(req, state->ev);
1278                 }
1279         }
1280
1281         if (dhnq && op->global->durable) {
1282                 uint8_t p[8] = { 0, };
1283                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1284
1285                 status = smb2_create_blob_add(state->out_context_blobs,
1286                                               state->out_context_blobs,
1287                                               SMB2_CREATE_TAG_DHNQ,
1288                                               blob);
1289                 if (!NT_STATUS_IS_OK(status)) {
1290                         tevent_req_nterror(req, status);
1291                         return tevent_req_post(req, state->ev);
1292                 }
1293         }
1294
1295         if (dh2q && op->global->durable &&
1296             /*
1297              * For replay operations, we return the dh2q blob
1298              * in the case of oplocks not based on the state of
1299              * the open, but on whether it could have been granted
1300              * for the request data. In the case of leases instead,
1301              * the state of the open is used...
1302              */
1303             (!state->replay_operation ||
1304              state->in_oplock_level == SMB2_OPLOCK_LEVEL_BATCH ||
1305              state->in_oplock_level == SMB2_OPLOCK_LEVEL_LEASE))
1306         {
1307                 uint8_t p[8] = { 0, };
1308                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1309                 uint32_t durable_v2_response_flags = 0;
1310
1311                 SIVAL(p, 0, op->global->durable_timeout_msec);
1312                 SIVAL(p, 4, durable_v2_response_flags);
1313
1314                 status = smb2_create_blob_add(state->out_context_blobs,
1315                                               state->out_context_blobs,
1316                                               SMB2_CREATE_TAG_DH2Q,
1317                                               blob);
1318                 if (!NT_STATUS_IS_OK(status)) {
1319                         tevent_req_nterror(req, status);
1320                         return tevent_req_post(req, state->ev);
1321                 }
1322         }
1323
1324         if (qfid) {
1325                 uint8_t p[32];
1326                 uint64_t file_index = get_FileIndex(state->result->conn,
1327                                                     &state->result->fsp_name->st);
1328                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1329
1330                 ZERO_STRUCT(p);
1331
1332                 /* From conversations with Microsoft engineers at
1333                    the MS plugfest. The first 8 bytes are the "volume index"
1334                    == inode, the second 8 bytes are the "volume id",
1335                    == dev. This will be updated in the SMB2 doc. */
1336                 SBVAL(p, 0, file_index);
1337                 SIVAL(p, 8, state->result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1338
1339                 status = smb2_create_blob_add(state->out_context_blobs,
1340                                               state->out_context_blobs,
1341                                               SMB2_CREATE_TAG_QFID,
1342                                               blob);
1343                 if (!NT_STATUS_IS_OK(status)) {
1344                         tevent_req_nterror(req, status);
1345                         return tevent_req_post(req, state->ev);
1346                 }
1347         }
1348
1349         if ((rqls != NULL) && (state->result->oplock_type == LEASE_OPLOCK)) {
1350                 uint8_t buf[52];
1351
1352                 lease = state->result->lease->lease;
1353
1354                 lease_len = sizeof(buf);
1355                 if (lease.lease_version == 1) {
1356                         lease_len = 32;
1357                 }
1358
1359                 if (!smb2_lease_push(&lease, buf, lease_len)) {
1360                         tevent_req_nterror(
1361                                 req, NT_STATUS_INTERNAL_ERROR);
1362                         return tevent_req_post(req, state->ev);
1363                 }
1364
1365                 status = smb2_create_blob_add(
1366                         state, state->out_context_blobs,
1367                         SMB2_CREATE_TAG_RQLS,
1368                         data_blob_const(buf, lease_len));
1369                 if (!NT_STATUS_IS_OK(status)) {
1370                         tevent_req_nterror(req, status);
1371                         return tevent_req_post(req, state->ev);
1372                 }
1373         }
1374
1375         smbd_smb2_create_finish(req);
1376         return req;
1377 }
1378
1379 static void smbd_smb2_create_finish(struct tevent_req *req)
1380 {
1381         struct smbd_smb2_create_state *state = tevent_req_data(
1382                 req, struct smbd_smb2_create_state);
1383         struct smbd_smb2_request *smb2req = state->smb2req;
1384         struct smb_request *smb1req = state->smb1req;
1385         files_struct *result = state->result;
1386
1387         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1388
1389         if (state->replay_operation) {
1390                 state->out_oplock_level = state->in_oplock_level;
1391         } else if (lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1392                 state->out_oplock_level = state->in_oplock_level;
1393         } else {
1394                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1395         }
1396
1397         if ((state->in_create_disposition == FILE_SUPERSEDE)
1398             && (state->info == FILE_WAS_OVERWRITTEN)) {
1399                 state->out_create_action = FILE_WAS_SUPERSEDED;
1400         } else {
1401                 state->out_create_action = state->info;
1402         }
1403         result->op->create_action = state->out_create_action;
1404         state->out_file_attributes = dos_mode(result->conn,
1405                                            result->fsp_name);
1406
1407         state->out_creation_ts = get_create_timespec(smb1req->conn,
1408                                         result, result->fsp_name);
1409         state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1410         state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1411         state->out_change_ts = get_change_timespec(smb1req->conn,
1412                                         result, result->fsp_name);
1413
1414         if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1415                 dos_filetime_timespec(&state->out_creation_ts);
1416                 dos_filetime_timespec(&state->out_last_access_ts);
1417                 dos_filetime_timespec(&state->out_last_write_ts);
1418                 dos_filetime_timespec(&state->out_change_ts);
1419         }
1420
1421         state->out_allocation_size =
1422                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1423                                                &(result->fsp_name->st));
1424         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1425         if (state->out_file_attributes == 0) {
1426                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1427         }
1428         state->out_file_id_persistent = result->op->global->open_persistent_id;
1429         state->out_file_id_volatile = result->op->global->open_volatile_id;
1430
1431         DBG_DEBUG("%s - %s\n", fsp_str_dbg(result), fsp_fnum_dbg(result));
1432
1433         tevent_req_done(req);
1434         tevent_req_post(req, state->ev);
1435         return;
1436 }
1437
1438 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1439                         TALLOC_CTX *mem_ctx,
1440                         uint8_t *out_oplock_level,
1441                         uint32_t *out_create_action,
1442                         struct timespec *out_creation_ts,
1443                         struct timespec *out_last_access_ts,
1444                         struct timespec *out_last_write_ts,
1445                         struct timespec *out_change_ts,
1446                         uint64_t *out_allocation_size,
1447                         uint64_t *out_end_of_file,
1448                         uint32_t *out_file_attributes,
1449                         uint64_t *out_file_id_persistent,
1450                         uint64_t *out_file_id_volatile,
1451                         struct smb2_create_blobs *out_context_blobs)
1452 {
1453         NTSTATUS status;
1454         struct smbd_smb2_create_state *state = tevent_req_data(req,
1455                                                struct smbd_smb2_create_state);
1456
1457         if (tevent_req_is_nterror(req, &status)) {
1458                 tevent_req_received(req);
1459                 return status;
1460         }
1461
1462         *out_oplock_level       = state->out_oplock_level;
1463         *out_create_action      = state->out_create_action;
1464         *out_creation_ts        = state->out_creation_ts;
1465         *out_last_access_ts     = state->out_last_access_ts;
1466         *out_last_write_ts      = state->out_last_write_ts;
1467         *out_change_ts          = state->out_change_ts;
1468         *out_allocation_size    = state->out_allocation_size;
1469         *out_end_of_file        = state->out_end_of_file;
1470         *out_file_attributes    = state->out_file_attributes;
1471         *out_file_id_persistent = state->out_file_id_persistent;
1472         *out_file_id_volatile   = state->out_file_id_volatile;
1473         *out_context_blobs      = *(state->out_context_blobs);
1474
1475         talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1476
1477         tevent_req_received(req);
1478         return NT_STATUS_OK;
1479 }
1480
1481 /*********************************************************
1482  Code for dealing with deferred opens.
1483 *********************************************************/
1484
1485 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1486                         struct timeval *p_request_time,
1487                         struct deferred_open_record **open_rec)
1488 {
1489         struct smbd_smb2_create_state *state = NULL;
1490         struct tevent_req *req = NULL;
1491
1492         if (!smb2req) {
1493                 return false;
1494         }
1495         req = smb2req->subreq;
1496         if (!req) {
1497                 return false;
1498         }
1499         state = tevent_req_data(req, struct smbd_smb2_create_state);
1500         if (!state) {
1501                 return false;
1502         }
1503         if (!state->open_was_deferred) {
1504                 return false;
1505         }
1506         if (p_request_time) {
1507                 *p_request_time = state->request_time;
1508         }
1509         if (open_rec != NULL) {
1510                 *open_rec = state->open_rec;
1511         }
1512         return true;
1513 }
1514
1515 /*********************************************************
1516  Re-process this call early - requested by message or
1517  close.
1518 *********************************************************/
1519
1520 static struct smbd_smb2_request *find_open_smb2req(
1521         struct smbXsrv_connection *xconn, uint64_t mid)
1522 {
1523         struct smbd_smb2_request *smb2req;
1524
1525         for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1526                 uint64_t message_id;
1527                 if (smb2req->subreq == NULL) {
1528                         /* This message has been processed. */
1529                         continue;
1530                 }
1531                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1532                         /* This message has been processed. */
1533                         continue;
1534                 }
1535                 message_id = get_mid_from_smb2req(smb2req);
1536                 if (message_id == mid) {
1537                         return smb2req;
1538                 }
1539         }
1540         return NULL;
1541 }
1542
1543 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1544 {
1545         struct smbd_smb2_create_state *state = NULL;
1546         struct smbd_smb2_request *smb2req;
1547
1548         smb2req = find_open_smb2req(xconn, mid);
1549
1550         if (!smb2req) {
1551                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1552                         (unsigned long long)mid));
1553                 return false;
1554         }
1555         if (!smb2req->subreq) {
1556                 return false;
1557         }
1558         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1559                 return false;
1560         }
1561         state = tevent_req_data(smb2req->subreq,
1562                         struct smbd_smb2_create_state);
1563         if (!state) {
1564                 return false;
1565         }
1566         /* It's not in progress if there's no timeout event. */
1567         if (!state->open_was_deferred) {
1568                 return false;
1569         }
1570
1571         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1572                         (unsigned long long)mid));
1573
1574         return true;
1575 }
1576
1577 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1578                                                         uint64_t mid)
1579 {
1580         struct smbd_smb2_create_state *state = NULL;
1581
1582         if (!smb2req->subreq) {
1583                 return;
1584         }
1585         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1586                 return;
1587         }
1588         state = tevent_req_data(smb2req->subreq,
1589                         struct smbd_smb2_create_state);
1590         if (!state) {
1591                 return;
1592         }
1593
1594         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1595                 "mid %llu\n",
1596                 (unsigned long long)mid ));
1597
1598         state->open_was_deferred = false;
1599         /* Ensure we don't have any outstanding immediate event. */
1600         TALLOC_FREE(state->im);
1601 }
1602
1603 void remove_deferred_open_message_smb2(
1604         struct smbXsrv_connection *xconn, uint64_t mid)
1605 {
1606         struct smbd_smb2_request *smb2req;
1607
1608         smb2req = find_open_smb2req(xconn, mid);
1609
1610         if (!smb2req) {
1611                 DEBUG(10,("remove_deferred_open_message_smb2: "
1612                         "can't find mid %llu\n",
1613                         (unsigned long long)mid ));
1614                 return;
1615         }
1616         remove_deferred_open_message_smb2_internal(smb2req, mid);
1617 }
1618
1619 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1620                                         struct tevent_immediate *im,
1621                                         void *private_data)
1622 {
1623         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1624                                         struct smbd_smb2_request);
1625         uint64_t mid = get_mid_from_smb2req(smb2req);
1626         NTSTATUS status;
1627
1628         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1629                 "re-dispatching mid %llu\n",
1630                 (unsigned long long)mid ));
1631
1632         status = smbd_smb2_request_dispatch(smb2req);
1633         if (!NT_STATUS_IS_OK(status)) {
1634                 smbd_server_connection_terminate(smb2req->xconn,
1635                                                  nt_errstr(status));
1636                 return;
1637         }
1638 }
1639
1640 bool schedule_deferred_open_message_smb2(
1641         struct smbXsrv_connection *xconn, uint64_t mid)
1642 {
1643         struct smbd_smb2_create_state *state = NULL;
1644         struct smbd_smb2_request *smb2req;
1645
1646         smb2req = find_open_smb2req(xconn, mid);
1647
1648         if (!smb2req) {
1649                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1650                         "can't find mid %llu\n",
1651                         (unsigned long long)mid ));
1652                 return false;
1653         }
1654         if (!smb2req->subreq) {
1655                 return false;
1656         }
1657         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1658                 return false;
1659         }
1660         state = tevent_req_data(smb2req->subreq,
1661                         struct smbd_smb2_create_state);
1662         if (!state) {
1663                 return false;
1664         }
1665
1666         /* Ensure we don't have any outstanding immediate event. */
1667         TALLOC_FREE(state->im);
1668
1669         /*
1670          * This is subtle. We must null out the callback
1671          * before rescheduling, else the first call to
1672          * tevent_req_nterror() causes the _receive()
1673          * function to be called, this causing tevent_req_post()
1674          * to crash.
1675          */
1676         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1677
1678         state->im = tevent_create_immediate(smb2req);
1679         if (!state->im) {
1680                 smbd_server_connection_terminate(smb2req->xconn,
1681                         nt_errstr(NT_STATUS_NO_MEMORY));
1682                 return false;
1683         }
1684
1685         DEBUG(10,("schedule_deferred_open_message_smb2: "
1686                 "re-processing mid %llu\n",
1687                 (unsigned long long)mid ));
1688
1689         tevent_schedule_immediate(state->im,
1690                         smb2req->sconn->ev_ctx,
1691                         smbd_smb2_create_request_dispatch_immediate,
1692                         smb2req);
1693
1694         return true;
1695 }
1696
1697 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1698 {
1699         struct smbd_smb2_request *smb2req = NULL;
1700         struct smbd_smb2_create_state *state = tevent_req_data(req,
1701                                 struct smbd_smb2_create_state);
1702         uint64_t mid;
1703
1704         if (!state) {
1705                 return false;
1706         }
1707
1708         if (!state->smb2req) {
1709                 return false;
1710         }
1711
1712         smb2req = state->smb2req;
1713         mid = get_mid_from_smb2req(smb2req);
1714
1715         if (is_deferred_open_async(state->open_rec)) {
1716                 /* Can't cancel an async create. */
1717                 return false;
1718         }
1719
1720         remove_deferred_open_message_smb2_internal(smb2req, mid);
1721
1722         tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1723         tevent_req_nterror(req, NT_STATUS_CANCELLED);
1724         return true;
1725 }
1726
1727 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1728                                 struct timeval request_time,
1729                                 struct timeval timeout,
1730                                 struct file_id id,
1731                                 struct deferred_open_record *open_rec)
1732 {
1733         struct tevent_req *req = NULL;
1734         struct smbd_smb2_create_state *state = NULL;
1735         struct timeval end_time;
1736
1737         if (!smb2req) {
1738                 return false;
1739         }
1740         req = smb2req->subreq;
1741         if (!req) {
1742                 return false;
1743         }
1744         state = tevent_req_data(req, struct smbd_smb2_create_state);
1745         if (!state) {
1746                 return false;
1747         }
1748         state->id = id;
1749         state->request_time = request_time;
1750         state->open_rec = talloc_move(state, &open_rec);
1751
1752         /* Re-schedule us to retry on timer expiry. */
1753         end_time = timeval_sum(&request_time, &timeout);
1754
1755         DEBUG(10,("push_deferred_open_message_smb2: "
1756                 "timeout at %s\n",
1757                 timeval_string(talloc_tos(),
1758                                 &end_time,
1759                                 true) ));
1760
1761         state->open_was_deferred = true;
1762
1763         /* allow this request to be canceled */
1764         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1765
1766         return true;
1767 }