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         uint8_t out_oplock_level;
 440         uint32_t out_create_action;
 441         struct timespec out_creation_ts;
 442         struct timespec out_last_access_ts;
 443         struct timespec out_last_write_ts;
 444         struct timespec out_change_ts;
 445         uint64_t out_allocation_size;
 446         uint64_t out_end_of_file;
 447         uint32_t out_file_attributes;
 448         uint64_t out_file_id_persistent;
 449         uint64_t out_file_id_volatile;
 450         struct smb2_create_blobs *out_context_blobs;
 451 };
 452
 453 static void smbd_smb2_create_finish(struct tevent_req *req,
 454                                     struct smbd_smb2_request *smb2req,
 455                                     struct smb_request *smb1req,
 456                                     files_struct *result,
 457                                     const bool replay_operation,
 458                                     const int in_oplock_level,
 459                                     const int in_create_disposition,
 460                                     const int info);
 461
 462 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 463                         struct tevent_context *ev,
 464                         struct smbd_smb2_request *smb2req,
 465                         uint8_t in_oplock_level,
 466                         uint32_t in_impersonation_level,
 467                         uint32_t in_desired_access,
 468                         uint32_t in_file_attributes,
 469                         uint32_t in_share_access,
 470                         uint32_t in_create_disposition,
 471                         uint32_t in_create_options,
 472                         const char *in_name,
 473                         struct smb2_create_blobs in_context_blobs)
 474 {
 475         struct tevent_req *req = NULL;
 476         struct smbd_smb2_create_state *state = NULL;
 477         NTSTATUS status;
 478         struct smb_request *smb1req = NULL;
 479         files_struct *result = NULL;
 480         int info;
 481         int requested_oplock_level;
 482         struct smb2_create_blob *dhnc = NULL;
 483         struct smb2_create_blob *dh2c = NULL;
 484         struct smb2_create_blob *dhnq = NULL;
 485         struct smb2_create_blob *dh2q = NULL;
 486         struct smb2_create_blob *rqls = NULL;
 487         bool replay_operation = false;
 488         char *fname = NULL;
 489         struct smb2_create_blob *exta = NULL;
 490         struct ea_list *ea_list = NULL;
 491         struct smb2_create_blob *mxac = NULL;
 492         NTTIME max_access_time = 0;
 493         struct smb2_create_blob *secd = NULL;
 494         struct security_descriptor *sec_desc = NULL;
 495         struct smb2_create_blob *alsi = NULL;
 496         uint64_t allocation_size = 0;
 497         struct smb2_create_blob *twrp = NULL;
 498         struct smb2_create_blob *qfid = NULL;
 499         struct GUID _create_guid = GUID_zero();
 500         struct GUID *create_guid = NULL;
 501         bool update_open = false;
 502         bool durable_requested = false;
 503         uint32_t durable_timeout_msec = 0;
 504         bool do_durable_reconnect = false;
 505         uint64_t persistent_id = 0;
 506         struct smb2_lease lease;
 507         struct smb2_lease *lease_ptr = NULL;
 508         ssize_t lease_len = -1;
 509         bool need_replay_cache = false;
 510         struct smbXsrv_open *op = NULL;
 511 #if 0
 512         struct smb2_create_blob *svhdx = NULL;
 513 #endif
 514
 515         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
 516                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 517         } else {
 518                 requested_oplock_level = in_oplock_level;
 519         }
 520
 521         req = tevent_req_create(mem_ctx, &state,
 522                                 struct smbd_smb2_create_state);
 523         if (req == NULL) {
 524                 return NULL;
 525         }
 526         *state = (struct smbd_smb2_create_state) {
 527                 .ev = ev,
 528                 .smb2req = smb2req,
 529         };
 530
 531         smb1req = smbd_smb2_fake_smb_request(smb2req);
 532         if (tevent_req_nomem(smb1req, req)) {
 533                 return tevent_req_post(req, state->ev);
 534         }
 535         state->smb1req = smb1req;
 536
 537         if (smb2req->subreq == NULL) {
 538                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 539                         in_name));
 540         } else {
 541                 struct smbd_smb2_create_state *old_state = tevent_req_data(
 542                         smb2req->subreq, struct smbd_smb2_create_state);
 543
 544                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 545                         in_name ));
 546
 547                 state->id = old_state->id;
 548                 state->request_time = old_state->request_time;
 549                 state->open_rec = talloc_move(state, &old_state->open_rec);
 550                 state->open_was_deferred = old_state->open_was_deferred;
 551         }
 552
 553         TALLOC_FREE(smb2req->subreq);
 554         smb2req->subreq = req;
 555
 556         /* these are ignored for SMB2 */
 557         in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 558         in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 559
 560         in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 561
 562         fname = talloc_strdup(state, in_name);
 563         if (tevent_req_nomem(fname, req)) {
 564                 return tevent_req_post(req, state->ev);
 565         }
 566
 567         state->out_context_blobs = talloc_zero(state, struct smb2_create_blobs);
 568         if (tevent_req_nomem(state->out_context_blobs, req)) {
 569                 return tevent_req_post(req, state->ev);
 570         }
 571
 572         dhnq = smb2_create_blob_find(&in_context_blobs,
 573                                      SMB2_CREATE_TAG_DHNQ);
 574         dhnc = smb2_create_blob_find(&in_context_blobs,
 575                                      SMB2_CREATE_TAG_DHNC);
 576         dh2q = smb2_create_blob_find(&in_context_blobs,
 577                                      SMB2_CREATE_TAG_DH2Q);
 578         dh2c = smb2_create_blob_find(&in_context_blobs,
 579                                      SMB2_CREATE_TAG_DH2C);
 580         if (smb2req->xconn->smb2.server.capabilities & SMB2_CAP_LEASING) {
 581                 rqls = smb2_create_blob_find(&in_context_blobs,
 582                                              SMB2_CREATE_TAG_RQLS);
 583         }
 584
 585         if ((dhnc && dh2c) || (dhnc && dh2q) || (dh2c && dhnq) ||
 586             (dh2q && dh2c))
 587         {
 588                 /* not both are allowed at the same time */
 589                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 590                 return tevent_req_post(req, state->ev);
 591         }
 592
 593         if (dhnc) {
 594                 uint32_t num_blobs_allowed;
 595
 596                 if (dhnc->data.length != 16) {
 597                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 598                         return tevent_req_post(req, state->ev);
 599                 }
 600
 601                 /*
 602                  * According to MS-SMB2: 3.3.5.9.7, "Handling the
 603                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT Create Context",
 604                  * we should ignore an additional dhnq blob, but fail
 605                  * the request (with status OBJECT_NAME_NOT_FOUND) if
 606                  * any other extra create blob has been provided.
 607                  *
 608                  * (Note that the cases of an additional dh2q or dh2c blob
 609                  *  which require a different error code, have been treated
 610                  *  above.)
 611                  */
 612
 613                 if (dhnq) {
 614                         num_blobs_allowed = 2;
 615                 } else {
 616                         num_blobs_allowed = 1;
 617                 }
 618
 619                 if (rqls != NULL) {
 620                         num_blobs_allowed += 1;
 621                 }
 622
 623                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 624                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 625                         return tevent_req_post(req, state->ev);
 626                 }
 627         }
 628
 629         if (dh2c) {
 630                 uint32_t num_blobs_allowed;
 631
 632                 if (dh2c->data.length != 36) {
 633                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 634                         return tevent_req_post(req, state->ev);
 635                 }
 636
 637                 /*
 638                  * According to MS-SMB2: 3.3.5.9.12, "Handling the
 639                  * SMB2_CREATE_DURABLE_HANDLE_RECONNECT_V2 Create Context",
 640                  * we should fail the request with status
 641                  * OBJECT_NAME_NOT_FOUND if any other create blob has been
 642                  * provided.
 643                  *
 644                  * (Note that the cases of an additional dhnq, dhnc or dh2q
 645                  *  blob which require a different error code, have been
 646                  *  treated above.)
 647                  */
 648
 649                 num_blobs_allowed = 1;
 650
 651                 if (rqls != NULL) {
 652                         num_blobs_allowed += 1;
 653                 }
 654
 655                 if (in_context_blobs.num_blobs != num_blobs_allowed) {
 656                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 657                         return tevent_req_post(req, state->ev);
 658                 }
 659         }
 660
 661         if (IS_IPC(smb1req->conn)) {
 662                 const char *pipe_name = in_name;
 663
 664                 if (dhnc || dh2c) {
 665                         /* durable handles are not supported on IPC$ */
 666                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 667                         return tevent_req_post(req, state->ev);
 668                 }
 669
 670                 if (!lp_nt_pipe_support()) {
 671                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 672                         return tevent_req_post(req, state->ev);
 673                 }
 674
 675                 status = open_np_file(smb1req, pipe_name, &result);
 676                 if (!NT_STATUS_IS_OK(status)) {
 677                         tevent_req_nterror(req, status);
 678                         return tevent_req_post(req, state->ev);
 679                 }
 680                 info = FILE_WAS_OPENED;
 681
 682                 smbd_smb2_create_finish(req,
 683                                         smb2req,
 684                                         smb1req,
 685                                         result,
 686                                         replay_operation,
 687                                         in_oplock_level,
 688                                         in_create_disposition,
 689                                         info);
 690                 return req;
 691
 692         } else if (CAN_PRINT(smb1req->conn)) {
 693                 if (dhnc || dh2c) {
 694                         /* durable handles are not supported on printers */
 695                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 696                         return tevent_req_post(req, state->ev);
 697                 }
 698
 699                 status = file_new(smb1req, smb1req->conn, &result);
 700                 if(!NT_STATUS_IS_OK(status)) {
 701                         tevent_req_nterror(req, status);
 702                         return tevent_req_post(req, state->ev);
 703                 }
 704
 705                 status = print_spool_open(result, in_name,
 706                                           smb1req->vuid);
 707                 if (!NT_STATUS_IS_OK(status)) {
 708                         file_free(smb1req, result);
 709                         tevent_req_nterror(req, status);
 710                         return tevent_req_post(req, state->ev);
 711                 }
 712                 info = FILE_WAS_CREATED;
 713
 714                 smbd_smb2_create_finish(req,
 715                                         smb2req,
 716                                         smb1req,
 717                                         result,
 718                                         replay_operation,
 719                                         in_oplock_level,
 720                                         in_create_disposition,
 721                                         info);
 722                 return req;
 723         }
 724
 725         exta = smb2_create_blob_find(&in_context_blobs,
 726                                      SMB2_CREATE_TAG_EXTA);
 727         mxac = smb2_create_blob_find(&in_context_blobs,
 728                                      SMB2_CREATE_TAG_MXAC);
 729         secd = smb2_create_blob_find(&in_context_blobs,
 730                                      SMB2_CREATE_TAG_SECD);
 731         alsi = smb2_create_blob_find(&in_context_blobs,
 732                                      SMB2_CREATE_TAG_ALSI);
 733         twrp = smb2_create_blob_find(&in_context_blobs,
 734                                      SMB2_CREATE_TAG_TWRP);
 735         qfid = smb2_create_blob_find(&in_context_blobs,
 736                                      SMB2_CREATE_TAG_QFID);
 737 #if 0
 738         if (smb2req->xconn->protocol >= PROTOCOL_SMB3_02) {
 739                 /*
 740                  * This was introduced with SMB3_02
 741                  */
 742                 svhdx = smb2_create_blob_find(&in_context_blobs,
 743                                               SVHDX_OPEN_DEVICE_CONTEXT);
 744         }
 745 #endif
 746
 747         if (exta) {
 748                 if (!lp_ea_support(SNUM(smb2req->tcon->compat))) {
 749                         tevent_req_nterror(req,
 750                                            NT_STATUS_EAS_NOT_SUPPORTED);
 751                         return tevent_req_post(req, state->ev);
 752                 }
 753
 754                 ea_list = read_nttrans_ea_list(mem_ctx,
 755                                                (const char *)exta->data.data, exta->data.length);
 756                 if (!ea_list) {
 757                         DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 758                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 759                         return tevent_req_post(req, state->ev);
 760                 }
 761
 762                 /*
 763                  * NB. When SMB2+ unix extensions are added,
 764                  * we need to relax this check in invalid
 765                  * names - we used to not do this if
 766                  * lp_posix_pathnames() was false.
 767                  */
 768                 if (ea_list_has_invalid_name(ea_list)) {
 769                         tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
 770                         return tevent_req_post(req, state->ev);
 771                 }
 772         }
 773
 774         if (mxac) {
 775                 if (mxac->data.length == 0) {
 776                         max_access_time = 0;
 777                 } else if (mxac->data.length == 8) {
 778                         max_access_time = BVAL(mxac->data.data, 0);
 779                 } else {
 780                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 781                         return tevent_req_post(req, state->ev);
 782                 }
 783         }
 784
 785         if (secd) {
 786                 enum ndr_err_code ndr_err;
 787
 788                 sec_desc = talloc_zero(state, struct security_descriptor);
 789                 if (tevent_req_nomem(sec_desc, req)) {
 790                         return tevent_req_post(req, state->ev);
 791                 }
 792
 793                 ndr_err = ndr_pull_struct_blob(&secd->data,
 794                                                sec_desc, sec_desc,
 795                                                (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 796                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 797                         DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 798                                  ndr_errstr(ndr_err)));
 799                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 800                         return tevent_req_post(req, state->ev);
 801                 }
 802         }
 803
 804         if (dhnq) {
 805                 if (dhnq->data.length != 16) {
 806                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 807                         return tevent_req_post(req, state->ev);
 808                 }
 809
 810                 if (dh2q) {
 811                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 812                         return tevent_req_post(req, state->ev);
 813                 }
 814
 815                 /*
 816                  * durable handle request is processed below.
 817                  */
 818                 durable_requested = true;
 819                 /*
 820                  * Set the timeout to 16 mins.
 821                  *
 822                  * TODO: test this against Windows 2012
 823                  *       as the default for durable v2 is 1 min.
 824                  */
 825                 durable_timeout_msec = (16*60*1000);
 826         }
 827
 828         if (dh2q) {
 829                 const uint8_t *p = dh2q->data.data;
 830                 uint32_t durable_v2_timeout = 0;
 831                 DATA_BLOB create_guid_blob;
 832                 const uint8_t *hdr;
 833                 uint32_t flags;
 834
 835                 if (dh2q->data.length != 32) {
 836                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 837                         return tevent_req_post(req, state->ev);
 838                 }
 839
 840                 if (dhnq) {
 841                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 842                         return tevent_req_post(req, state->ev);
 843                 }
 844
 845                 durable_v2_timeout = IVAL(p, 0);
 846                 create_guid_blob = data_blob_const(p + 16, 16);
 847
 848                 status = GUID_from_ndr_blob(&create_guid_blob,
 849                                             &_create_guid);
 850                 if (tevent_req_nterror(req, status)) {
 851                         return tevent_req_post(req, state->ev);
 852                 }
 853                 create_guid = &_create_guid;
 854                 /*
 855                  * we need to store the create_guid later
 856                  */
 857                 update_open = true;
 858
 859                 /*
 860                  * And we need to create a cache for replaying the
 861                  * create.
 862                  */
 863                 need_replay_cache = true;
 864
 865                 /*
 866                  * durable handle v2 request processed below
 867                  */
 868                 durable_requested = true;
 869                 durable_timeout_msec = durable_v2_timeout;
 870                 if (durable_timeout_msec == 0) {
 871                         /*
 872                          * Set the timeout to 1 min as default.
 873                          *
 874                          * This matches Windows 2012.
 875                          */
 876                         durable_timeout_msec = (60*1000);
 877                 }
 878
 879                 /*
 880                  * Check for replay operation.
 881                  * Only consider it when we have dh2q.
 882                  * If we do not have a replay operation, verify that
 883                  * the create_guid is not cached for replay.
 884                  */
 885                 hdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
 886                 flags = IVAL(hdr, SMB2_HDR_FLAGS);
 887                 replay_operation =
 888                         flags & SMB2_HDR_FLAG_REPLAY_OPERATION;
 889
 890                 status = smb2srv_open_lookup_replay_cache(
 891                         smb2req->xconn, create_guid,
 892                         0 /* now */, &op);
 893
 894                 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
 895                         replay_operation = false;
 896                 } else if (tevent_req_nterror(req, status)) {
 897                         DBG_WARNING("smb2srv_open_lookup_replay_cache "
 898                                     "failed: %s\n", nt_errstr(status));
 899                         return tevent_req_post(req, state->ev);
 900                 } else if (!replay_operation) {
 901                         /*
 902                          * If a create without replay operation flag
 903                          * is sent but with a create_guid that is
 904                          * currently in the replay cache -- fail.
 905                          */
 906                         status = NT_STATUS_DUPLICATE_OBJECTID;
 907                         (void)tevent_req_nterror(req, status);
 908                         return tevent_req_post(req, state->ev);
 909                 }
 910         }
 911
 912         if (dhnc) {
 913                 persistent_id = BVAL(dhnc->data.data, 0);
 914
 915                 do_durable_reconnect = true;
 916         }
 917
 918         if (dh2c) {
 919                 const uint8_t *p = dh2c->data.data;
 920                 DATA_BLOB create_guid_blob;
 921
 922                 persistent_id = BVAL(p, 0);
 923                 create_guid_blob = data_blob_const(p + 16, 16);
 924
 925                 status = GUID_from_ndr_blob(&create_guid_blob,
 926                                             &_create_guid);
 927                 if (tevent_req_nterror(req, status)) {
 928                         return tevent_req_post(req, state->ev);
 929                 }
 930                 create_guid = &_create_guid;
 931
 932                 do_durable_reconnect = true;
 933         }
 934
 935         if (alsi) {
 936                 if (alsi->data.length != 8) {
 937                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 938                         return tevent_req_post(req, state->ev);
 939                 }
 940                 allocation_size = BVAL(alsi->data.data, 0);
 941         }
 942
 943         if (twrp) {
 944                 NTTIME nttime;
 945                 time_t t;
 946                 struct tm *tm;
 947
 948                 if (twrp->data.length != 8) {
 949                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 950                         return tevent_req_post(req, state->ev);
 951                 }
 952
 953                 nttime = BVAL(twrp->data.data, 0);
 954                 t = nt_time_to_unix(nttime);
 955                 tm = gmtime(&t);
 956
 957                 TALLOC_FREE(fname);
 958                 fname = talloc_asprintf(state,
 959                                         "%s\\@GMT-%04u.%02u.%02u-%02u.%02u.%02u",
 960                                         in_name,
 961                                         tm->tm_year + 1900,
 962                                         tm->tm_mon + 1,
 963                                         tm->tm_mday,
 964                                         tm->tm_hour,
 965                                         tm->tm_min,
 966                                         tm->tm_sec);
 967                 if (tevent_req_nomem(fname, req)) {
 968                         return tevent_req_post(req, state->ev);
 969                 }
 970                 /*
 971                  * Tell filename_create_ucf_flags() this
 972                  * is an @GMT path.
 973                  */
 974                 smb1req->flags2 |= FLAGS2_REPARSE_PATH;
 975         }
 976
 977         if (qfid) {
 978                 if (qfid->data.length != 0) {
 979                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 980                         return tevent_req_post(req, state->ev);
 981                 }
 982         }
 983
 984         if (rqls) {
 985                 lease_len = smb2_lease_pull(
 986                         rqls->data.data, rqls->data.length, &lease);
 987                 if (lease_len == -1) {
 988                         tevent_req_nterror(
 989                                 req, NT_STATUS_INVALID_PARAMETER);
 990                         return tevent_req_post(req, state->ev);
 991                 }
 992                 lease_ptr = &lease;
 993
 994                 if (DEBUGLEVEL >= 10) {
 995                         DEBUG(10, ("Got lease request size %d\n",
 996                                    (int)lease_len));
 997                         NDR_PRINT_DEBUG(smb2_lease, lease_ptr);
 998                 }
 999
1000                 if (!smb2_lease_key_valid(&lease.lease_key)) {
1001                         lease_ptr = NULL;
1002                         requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1003                 }
1004
1005                 if ((smb2req->xconn->protocol < PROTOCOL_SMB3_00) &&
1006                     (lease.lease_version != 1)) {
1007                         DEBUG(10, ("v2 lease key only for SMB3\n"));
1008                         lease_ptr = NULL;
1009                 }
1010
1011                 /*
1012                  * Replay with a lease is only allowed if the
1013                  * established open carries a lease with the
1014                  * same lease key.
1015                  */
1016                 if (replay_operation) {
1017                         struct smb2_lease *op_ls =
1018                                 &op->compat->lease->lease;
1019                         int op_oplock = op->compat->oplock_type;
1020
1021                         if (map_samba_oplock_levels_to_smb2(op_oplock)
1022                             != SMB2_OPLOCK_LEVEL_LEASE)
1023                         {
1024                                 status = NT_STATUS_ACCESS_DENIED;
1025                                 (void)tevent_req_nterror(req, status);
1026                                 return tevent_req_post(req, state->ev);
1027                         }
1028                         if (!smb2_lease_key_equal(&lease.lease_key,
1029                                                   &op_ls->lease_key))
1030                         {
1031                                 status = NT_STATUS_ACCESS_DENIED;
1032                                 (void)tevent_req_nterror(req, status);
1033                                 return tevent_req_post(req, state->ev);
1034                         }
1035                 }
1036         }
1037
1038         DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
1039
1040         /*
1041          * For the backend file open procedure, there are
1042          * three possible modes: replay operation (in which case
1043          * there is nothing else to do), durable_reconnect or
1044          * new open.
1045          */
1046         if (replay_operation) {
1047                 result = op->compat;
1048                 result->op = op;
1049                 update_open = false;
1050                 info = op->create_action;
1051         } else if (do_durable_reconnect) {
1052                 DATA_BLOB new_cookie = data_blob_null;
1053                 NTTIME now = timeval_to_nttime(&smb2req->request_time);
1054
1055                 status = smb2srv_open_recreate(smb2req->xconn,
1056                                                smb1req->conn->session_info,
1057                                                persistent_id, create_guid,
1058                                                now, &op);
1059                 if (!NT_STATUS_IS_OK(status)) {
1060                         DEBUG(3, ("smbd_smb2_create_send: "
1061                                   "smb2srv_open_recreate failed: %s\n",
1062                                   nt_errstr(status)));
1063                         tevent_req_nterror(req, status);
1064                         return tevent_req_post(req, state->ev);
1065                 }
1066
1067                 DEBUG(10, ("smb2_create_send: %s to recreate the "
1068                            "smb2srv_open struct for a durable handle.\n",
1069                            op->global->durable ? "succeeded" : "failed"));
1070
1071                 if (!op->global->durable) {
1072                         talloc_free(op);
1073                         tevent_req_nterror(req,
1074                                            NT_STATUS_OBJECT_NAME_NOT_FOUND);
1075                         return tevent_req_post(req, state->ev);
1076                 }
1077
1078                 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
1079                                                    smb1req,
1080                                                    op, /* smbXsrv_open input */
1081                                                    op->global->backend_cookie,
1082                                                    op, /* TALLOC_CTX */
1083                                                    &result, &new_cookie);
1084                 if (!NT_STATUS_IS_OK(status)) {
1085                         NTSTATUS return_status;
1086
1087                         return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
1088
1089                         DEBUG(3, ("smbd_smb2_create_send: "
1090                                   "durable_reconnect failed: %s => %s\n",
1091                                   nt_errstr(status),
1092                                   nt_errstr(return_status)));
1093
1094                         tevent_req_nterror(req, return_status);
1095                         return tevent_req_post(req, state->ev);
1096                 }
1097
1098                 DEBUG(10, ("result->oplock_type=%u, lease_ptr==%p\n",
1099                            (unsigned)result->oplock_type, lease_ptr));
1100
1101                 status = smbd_smb2_create_durable_lease_check(
1102                         smb1req, fname, result, lease_ptr);
1103                 if (!NT_STATUS_IS_OK(status)) {
1104                         close_file(smb1req, result, SHUTDOWN_CLOSE);
1105                         tevent_req_nterror(req, status);
1106                         return tevent_req_post(req, state->ev);
1107                 }
1108
1109                 data_blob_free(&op->global->backend_cookie);
1110                 op->global->backend_cookie = new_cookie;
1111
1112                 op->status = NT_STATUS_OK;
1113                 op->global->disconnect_time = 0;
1114
1115                 /* save the timout for later update */
1116                 durable_timeout_msec = op->global->durable_timeout_msec;
1117
1118                 update_open = true;
1119
1120                 info = FILE_WAS_OPENED;
1121         } else {
1122                 struct smb_filename *smb_fname = NULL;
1123                 uint32_t ucf_flags;
1124
1125                 if (requested_oplock_level == SMB2_OPLOCK_LEVEL_LEASE) {
1126                         if (lease_ptr == NULL) {
1127                                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
1128                         }
1129                 } else {
1130                         lease_ptr = NULL;
1131                 }
1132
1133                 /*
1134                  * For a DFS path the function parse_dfs_path()
1135                  * will do the path processing.
1136                  */
1137
1138                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
1139                         /* convert '\\' into '/' */
1140                         status = check_path_syntax(fname);
1141                         if (!NT_STATUS_IS_OK(status)) {
1142                                 tevent_req_nterror(req, status);
1143                                 return tevent_req_post(req, state->ev);
1144                         }
1145                 }
1146
1147                 ucf_flags = filename_create_ucf_flags(smb1req, in_create_disposition);
1148                 status = filename_convert(req,
1149                                           smb1req->conn,
1150                                           fname,
1151                                           ucf_flags,
1152                                           NULL, /* ppath_contains_wcards */
1153                                           &smb_fname);
1154                 if (!NT_STATUS_IS_OK(status)) {
1155                         tevent_req_nterror(req, status);
1156                         return tevent_req_post(req, state->ev);
1157                 }
1158
1159                 /*
1160                  * MS-SMB2: 2.2.13 SMB2 CREATE Request
1161                  * ImpersonationLevel ... MUST contain one of the
1162                  * following values. The server MUST validate this
1163                  * field, but otherwise ignore it.
1164                  *
1165                  * NB. The source4/torture/smb2/durable_open.c test
1166                  * shows this check is only done on real opens, not
1167                  * on durable handle-reopens.
1168                  */
1169
1170                 if (in_impersonation_level >
1171                     SMB2_IMPERSONATION_DELEGATE) {
1172                         tevent_req_nterror(req,
1173                                            NT_STATUS_BAD_IMPERSONATION_LEVEL);
1174                         return tevent_req_post(req, state->ev);
1175                 }
1176
1177                 /*
1178                  * We know we're going to do a local open, so now
1179                  * we must be protocol strict. JRA.
1180                  *
1181                  * MS-SMB2: 3.3.5.9 - Receiving an SMB2 CREATE Request
1182                  * If the file name length is greater than zero and the
1183                  * first character is a path separator character, the
1184                  * server MUST fail the request with
1185                  * STATUS_INVALID_PARAMETER.
1186                  */
1187                 if (in_name[0] == '\\' || in_name[0] == '/') {
1188                         tevent_req_nterror(req,
1189                                            NT_STATUS_INVALID_PARAMETER);
1190                         return tevent_req_post(req, state->ev);
1191                 }
1192
1193                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
1194                                              smb1req,
1195                                              0, /* root_dir_fid */
1196                                              smb_fname,
1197                                              in_desired_access,
1198                                              in_share_access,
1199                                              in_create_disposition,
1200                                              in_create_options,
1201                                              in_file_attributes,
1202                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
1203                                              lease_ptr,
1204                                              allocation_size,
1205                                              0, /* private_flags */
1206                                              sec_desc,
1207                                              ea_list,
1208                                              &result,
1209                                              &info,
1210                                              &in_context_blobs,
1211                                              state->out_context_blobs);
1212                 if (!NT_STATUS_IS_OK(status)) {
1213                         if (open_was_deferred(smb1req->xconn, smb1req->mid)) {
1214                                 SMBPROFILE_IOBYTES_ASYNC_SET_IDLE(smb2req->profile);
1215                                 return req;
1216                         }
1217                         tevent_req_nterror(req, status);
1218                         return tevent_req_post(req, state->ev);
1219                 }
1220                 op = result->op;
1221         }
1222
1223         /*
1224          * here we have op == result->op
1225          */
1226
1227         DEBUG(10, ("smbd_smb2_create_send: "
1228                    "response construction phase\n"));
1229
1230         if (mxac) {
1231                 NTTIME last_write_time;
1232
1233                 last_write_time = unix_timespec_to_nt_time(
1234                         result->fsp_name->st.st_ex_mtime);
1235                 if (last_write_time != max_access_time) {
1236                         uint8_t p[8];
1237                         uint32_t max_access_granted;
1238                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
1239
1240                         status = smbd_calculate_access_mask(smb1req->conn,
1241                                                             result->fsp_name,
1242                                                             false,
1243                                                             SEC_FLAG_MAXIMUM_ALLOWED,
1244                                                             &max_access_granted);
1245
1246                         SIVAL(p, 0, NT_STATUS_V(status));
1247                         SIVAL(p, 4, max_access_granted);
1248
1249                         status = smb2_create_blob_add(
1250                                 state->out_context_blobs,
1251                                 state->out_context_blobs,
1252                                 SMB2_CREATE_TAG_MXAC,
1253                                 blob);
1254                         if (!NT_STATUS_IS_OK(status)) {
1255                                 tevent_req_nterror(req, status);
1256                                 return tevent_req_post(req, state->ev);
1257                         }
1258                 }
1259         }
1260
1261         if (!replay_operation && durable_requested &&
1262             (fsp_lease_type(result) & SMB2_LEASE_HANDLE))
1263         {
1264                 status = SMB_VFS_DURABLE_COOKIE(result,
1265                                                 op,
1266                                                 &op->global->backend_cookie);
1267                 if (!NT_STATUS_IS_OK(status)) {
1268                         op->global->backend_cookie = data_blob_null;
1269                 }
1270         }
1271         if (!replay_operation && op->global->backend_cookie.length > 0)
1272         {
1273                 update_open = true;
1274
1275                 op->global->durable = true;
1276                 op->global->durable_timeout_msec = durable_timeout_msec;
1277         }
1278
1279         if (update_open) {
1280                 op->global->create_guid = _create_guid;
1281                 if (need_replay_cache) {
1282                         op->flags |= SMBXSRV_OPEN_NEED_REPLAY_CACHE;
1283                 }
1284
1285                 status = smbXsrv_open_update(op);
1286                 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
1287                            "returned %s\n",
1288                            nt_errstr(status)));
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 (dhnq && op->global->durable) {
1296                 uint8_t p[8] = { 0, };
1297                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1298
1299                 status = smb2_create_blob_add(state->out_context_blobs,
1300                                               state->out_context_blobs,
1301                                               SMB2_CREATE_TAG_DHNQ,
1302                                               blob);
1303                 if (!NT_STATUS_IS_OK(status)) {
1304                         tevent_req_nterror(req, status);
1305                         return tevent_req_post(req, state->ev);
1306                 }
1307         }
1308
1309         if (dh2q && op->global->durable &&
1310             /*
1311              * For replay operations, we return the dh2q blob
1312              * in the case of oplocks not based on the state of
1313              * the open, but on whether it could have been granted
1314              * for the request data. In the case of leases instead,
1315              * the state of the open is used...
1316              */
1317             (!replay_operation ||
1318              in_oplock_level == SMB2_OPLOCK_LEVEL_BATCH ||
1319              in_oplock_level == SMB2_OPLOCK_LEVEL_LEASE))
1320         {
1321                 uint8_t p[8] = { 0, };
1322                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1323                 uint32_t durable_v2_response_flags = 0;
1324
1325                 SIVAL(p, 0, op->global->durable_timeout_msec);
1326                 SIVAL(p, 4, durable_v2_response_flags);
1327
1328                 status = smb2_create_blob_add(state->out_context_blobs,
1329                                               state->out_context_blobs,
1330                                               SMB2_CREATE_TAG_DH2Q,
1331                                               blob);
1332                 if (!NT_STATUS_IS_OK(status)) {
1333                         tevent_req_nterror(req, status);
1334                         return tevent_req_post(req, state->ev);
1335                 }
1336         }
1337
1338         if (qfid) {
1339                 uint8_t p[32];
1340                 uint64_t file_index = get_FileIndex(result->conn,
1341                                                     &result->fsp_name->st);
1342                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
1343
1344                 ZERO_STRUCT(p);
1345
1346                 /* From conversations with Microsoft engineers at
1347                    the MS plugfest. The first 8 bytes are the "volume index"
1348                    == inode, the second 8 bytes are the "volume id",
1349                    == dev. This will be updated in the SMB2 doc. */
1350                 SBVAL(p, 0, file_index);
1351                 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1352
1353                 status = smb2_create_blob_add(state->out_context_blobs,
1354                                               state->out_context_blobs,
1355                                               SMB2_CREATE_TAG_QFID,
1356                                               blob);
1357                 if (!NT_STATUS_IS_OK(status)) {
1358                         tevent_req_nterror(req, status);
1359                         return tevent_req_post(req, state->ev);
1360                 }
1361         }
1362
1363         if ((rqls != NULL) && (result->oplock_type == LEASE_OPLOCK)) {
1364                 uint8_t buf[52];
1365
1366                 lease = result->lease->lease;
1367
1368                 lease_len = sizeof(buf);
1369                 if (lease.lease_version == 1) {
1370                         lease_len = 32;
1371                 }
1372
1373                 if (!smb2_lease_push(&lease, buf, lease_len)) {
1374                         tevent_req_nterror(
1375                                 req, NT_STATUS_INTERNAL_ERROR);
1376                         return tevent_req_post(req, state->ev);
1377                 }
1378
1379                 status = smb2_create_blob_add(
1380                         state, state->out_context_blobs,
1381                         SMB2_CREATE_TAG_RQLS,
1382                         data_blob_const(buf, lease_len));
1383                 if (!NT_STATUS_IS_OK(status)) {
1384                         tevent_req_nterror(req, status);
1385                         return tevent_req_post(req, state->ev);
1386                 }
1387         }
1388
1389         smbd_smb2_create_finish(req,
1390                                 smb2req,
1391                                 smb1req,
1392                                 result,
1393                                 replay_operation,
1394                                 in_oplock_level,
1395                                 in_create_disposition,
1396                                 info);
1397         return req;
1398 }
1399
1400 static void smbd_smb2_create_finish(struct tevent_req *req,
1401                                     struct smbd_smb2_request *smb2req,
1402                                     struct smb_request *smb1req,
1403                                     files_struct *result,
1404                                     const bool replay_operation,
1405                                     const int in_oplock_level,
1406                                     const int in_create_disposition,
1407                                     const int info)
1408 {
1409         struct smbd_smb2_create_state *state = tevent_req_data(
1410                 req, struct smbd_smb2_create_state);
1411
1412         smb2req->compat_chain_fsp = smb1req->chain_fsp;
1413
1414         if (replay_operation) {
1415                 state->out_oplock_level = in_oplock_level;
1416         } else if (lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1417                 state->out_oplock_level = in_oplock_level;
1418         } else {
1419                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1420         }
1421
1422         if ((in_create_disposition == FILE_SUPERSEDE)
1423             && (info == FILE_WAS_OVERWRITTEN)) {
1424                 state->out_create_action = FILE_WAS_SUPERSEDED;
1425         } else {
1426                 state->out_create_action = info;
1427         }
1428         result->op->create_action = state->out_create_action;
1429         state->out_file_attributes = dos_mode(result->conn,
1430                                            result->fsp_name);
1431
1432         state->out_creation_ts = get_create_timespec(smb1req->conn,
1433                                         result, result->fsp_name);
1434         state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1435         state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1436         state->out_change_ts = get_change_timespec(smb1req->conn,
1437                                         result, result->fsp_name);
1438
1439         if (lp_dos_filetime_resolution(SNUM(smb2req->tcon->compat))) {
1440                 dos_filetime_timespec(&state->out_creation_ts);
1441                 dos_filetime_timespec(&state->out_last_access_ts);
1442                 dos_filetime_timespec(&state->out_last_write_ts);
1443                 dos_filetime_timespec(&state->out_change_ts);
1444         }
1445
1446         state->out_allocation_size =
1447                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1448                                                &(result->fsp_name->st));
1449         state->out_end_of_file = result->fsp_name->st.st_ex_size;
1450         if (state->out_file_attributes == 0) {
1451                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1452         }
1453         state->out_file_id_persistent = result->op->global->open_persistent_id;
1454         state->out_file_id_volatile = result->op->global->open_volatile_id;
1455
1456         DBG_DEBUG("%s - %s\n", fsp_str_dbg(result), fsp_fnum_dbg(result));
1457
1458         tevent_req_done(req);
1459         tevent_req_post(req, state->ev);
1460         return;
1461 }
1462
1463 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1464                         TALLOC_CTX *mem_ctx,
1465                         uint8_t *out_oplock_level,
1466                         uint32_t *out_create_action,
1467                         struct timespec *out_creation_ts,
1468                         struct timespec *out_last_access_ts,
1469                         struct timespec *out_last_write_ts,
1470                         struct timespec *out_change_ts,
1471                         uint64_t *out_allocation_size,
1472                         uint64_t *out_end_of_file,
1473                         uint32_t *out_file_attributes,
1474                         uint64_t *out_file_id_persistent,
1475                         uint64_t *out_file_id_volatile,
1476                         struct smb2_create_blobs *out_context_blobs)
1477 {
1478         NTSTATUS status;
1479         struct smbd_smb2_create_state *state = tevent_req_data(req,
1480                                                struct smbd_smb2_create_state);
1481
1482         if (tevent_req_is_nterror(req, &status)) {
1483                 tevent_req_received(req);
1484                 return status;
1485         }
1486
1487         *out_oplock_level       = state->out_oplock_level;
1488         *out_create_action      = state->out_create_action;
1489         *out_creation_ts        = state->out_creation_ts;
1490         *out_last_access_ts     = state->out_last_access_ts;
1491         *out_last_write_ts      = state->out_last_write_ts;
1492         *out_change_ts          = state->out_change_ts;
1493         *out_allocation_size    = state->out_allocation_size;
1494         *out_end_of_file        = state->out_end_of_file;
1495         *out_file_attributes    = state->out_file_attributes;
1496         *out_file_id_persistent = state->out_file_id_persistent;
1497         *out_file_id_volatile   = state->out_file_id_volatile;
1498         *out_context_blobs      = *(state->out_context_blobs);
1499
1500         talloc_steal(mem_ctx, state->out_context_blobs->blobs);
1501
1502         tevent_req_received(req);
1503         return NT_STATUS_OK;
1504 }
1505
1506 /*********************************************************
1507  Code for dealing with deferred opens.
1508 *********************************************************/
1509
1510 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1511                         struct timeval *p_request_time,
1512                         struct deferred_open_record **open_rec)
1513 {
1514         struct smbd_smb2_create_state *state = NULL;
1515         struct tevent_req *req = NULL;
1516
1517         if (!smb2req) {
1518                 return false;
1519         }
1520         req = smb2req->subreq;
1521         if (!req) {
1522                 return false;
1523         }
1524         state = tevent_req_data(req, struct smbd_smb2_create_state);
1525         if (!state) {
1526                 return false;
1527         }
1528         if (!state->open_was_deferred) {
1529                 return false;
1530         }
1531         if (p_request_time) {
1532                 *p_request_time = state->request_time;
1533         }
1534         if (open_rec != NULL) {
1535                 *open_rec = state->open_rec;
1536         }
1537         return true;
1538 }
1539
1540 /*********************************************************
1541  Re-process this call early - requested by message or
1542  close.
1543 *********************************************************/
1544
1545 static struct smbd_smb2_request *find_open_smb2req(
1546         struct smbXsrv_connection *xconn, uint64_t mid)
1547 {
1548         struct smbd_smb2_request *smb2req;
1549
1550         for (smb2req = xconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1551                 uint64_t message_id;
1552                 if (smb2req->subreq == NULL) {
1553                         /* This message has been processed. */
1554                         continue;
1555                 }
1556                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1557                         /* This message has been processed. */
1558                         continue;
1559                 }
1560                 message_id = get_mid_from_smb2req(smb2req);
1561                 if (message_id == mid) {
1562                         return smb2req;
1563                 }
1564         }
1565         return NULL;
1566 }
1567
1568 bool open_was_deferred_smb2(struct smbXsrv_connection *xconn, uint64_t mid)
1569 {
1570         struct smbd_smb2_create_state *state = NULL;
1571         struct smbd_smb2_request *smb2req;
1572
1573         smb2req = find_open_smb2req(xconn, mid);
1574
1575         if (!smb2req) {
1576                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1577                         (unsigned long long)mid));
1578                 return false;
1579         }
1580         if (!smb2req->subreq) {
1581                 return false;
1582         }
1583         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1584                 return false;
1585         }
1586         state = tevent_req_data(smb2req->subreq,
1587                         struct smbd_smb2_create_state);
1588         if (!state) {
1589                 return false;
1590         }
1591         /* It's not in progress if there's no timeout event. */
1592         if (!state->open_was_deferred) {
1593                 return false;
1594         }
1595
1596         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1597                         (unsigned long long)mid));
1598
1599         return true;
1600 }
1601
1602 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1603                                                         uint64_t mid)
1604 {
1605         struct smbd_smb2_create_state *state = NULL;
1606
1607         if (!smb2req->subreq) {
1608                 return;
1609         }
1610         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1611                 return;
1612         }
1613         state = tevent_req_data(smb2req->subreq,
1614                         struct smbd_smb2_create_state);
1615         if (!state) {
1616                 return;
1617         }
1618
1619         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1620                 "mid %llu\n",
1621                 (unsigned long long)mid ));
1622
1623         state->open_was_deferred = false;
1624         /* Ensure we don't have any outstanding immediate event. */
1625         TALLOC_FREE(state->im);
1626 }
1627
1628 void remove_deferred_open_message_smb2(
1629         struct smbXsrv_connection *xconn, uint64_t mid)
1630 {
1631         struct smbd_smb2_request *smb2req;
1632
1633         smb2req = find_open_smb2req(xconn, mid);
1634
1635         if (!smb2req) {
1636                 DEBUG(10,("remove_deferred_open_message_smb2: "
1637                         "can't find mid %llu\n",
1638                         (unsigned long long)mid ));
1639                 return;
1640         }
1641         remove_deferred_open_message_smb2_internal(smb2req, mid);
1642 }
1643
1644 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1645                                         struct tevent_immediate *im,
1646                                         void *private_data)
1647 {
1648         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1649                                         struct smbd_smb2_request);
1650         uint64_t mid = get_mid_from_smb2req(smb2req);
1651         NTSTATUS status;
1652
1653         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1654                 "re-dispatching mid %llu\n",
1655                 (unsigned long long)mid ));
1656
1657         status = smbd_smb2_request_dispatch(smb2req);
1658         if (!NT_STATUS_IS_OK(status)) {
1659                 smbd_server_connection_terminate(smb2req->xconn,
1660                                                  nt_errstr(status));
1661                 return;
1662         }
1663 }
1664
1665 bool schedule_deferred_open_message_smb2(
1666         struct smbXsrv_connection *xconn, uint64_t mid)
1667 {
1668         struct smbd_smb2_create_state *state = NULL;
1669         struct smbd_smb2_request *smb2req;
1670
1671         smb2req = find_open_smb2req(xconn, mid);
1672
1673         if (!smb2req) {
1674                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1675                         "can't find mid %llu\n",
1676                         (unsigned long long)mid ));
1677                 return false;
1678         }
1679         if (!smb2req->subreq) {
1680                 return false;
1681         }
1682         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1683                 return false;
1684         }
1685         state = tevent_req_data(smb2req->subreq,
1686                         struct smbd_smb2_create_state);
1687         if (!state) {
1688                 return false;
1689         }
1690
1691         /* Ensure we don't have any outstanding immediate event. */
1692         TALLOC_FREE(state->im);
1693
1694         /*
1695          * This is subtle. We must null out the callback
1696          * before rescheduling, else the first call to
1697          * tevent_req_nterror() causes the _receive()
1698          * function to be called, this causing tevent_req_post()
1699          * to crash.
1700          */
1701         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1702
1703         state->im = tevent_create_immediate(smb2req);
1704         if (!state->im) {
1705                 smbd_server_connection_terminate(smb2req->xconn,
1706                         nt_errstr(NT_STATUS_NO_MEMORY));
1707                 return false;
1708         }
1709
1710         DEBUG(10,("schedule_deferred_open_message_smb2: "
1711                 "re-processing mid %llu\n",
1712                 (unsigned long long)mid ));
1713
1714         tevent_schedule_immediate(state->im,
1715                         smb2req->sconn->ev_ctx,
1716                         smbd_smb2_create_request_dispatch_immediate,
1717                         smb2req);
1718
1719         return true;
1720 }
1721
1722 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1723 {
1724         struct smbd_smb2_request *smb2req = NULL;
1725         struct smbd_smb2_create_state *state = tevent_req_data(req,
1726                                 struct smbd_smb2_create_state);
1727         uint64_t mid;
1728
1729         if (!state) {
1730                 return false;
1731         }
1732
1733         if (!state->smb2req) {
1734                 return false;
1735         }
1736
1737         smb2req = state->smb2req;
1738         mid = get_mid_from_smb2req(smb2req);
1739
1740         if (is_deferred_open_async(state->open_rec)) {
1741                 /* Can't cancel an async create. */
1742                 return false;
1743         }
1744
1745         remove_deferred_open_message_smb2_internal(smb2req, mid);
1746
1747         tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1748         tevent_req_nterror(req, NT_STATUS_CANCELLED);
1749         return true;
1750 }
1751
1752 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1753                                 struct timeval request_time,
1754                                 struct timeval timeout,
1755                                 struct file_id id,
1756                                 struct deferred_open_record *open_rec)
1757 {
1758         struct tevent_req *req = NULL;
1759         struct smbd_smb2_create_state *state = NULL;
1760         struct timeval end_time;
1761
1762         if (!smb2req) {
1763                 return false;
1764         }
1765         req = smb2req->subreq;
1766         if (!req) {
1767                 return false;
1768         }
1769         state = tevent_req_data(req, struct smbd_smb2_create_state);
1770         if (!state) {
1771                 return false;
1772         }
1773         state->id = id;
1774         state->request_time = request_time;
1775         state->open_rec = talloc_move(state, &open_rec);
1776
1777         /* Re-schedule us to retry on timer expiry. */
1778         end_time = timeval_sum(&request_time, &timeout);
1779
1780         DEBUG(10,("push_deferred_open_message_smb2: "
1781                 "timeout at %s\n",
1782                 timeval_string(talloc_tos(),
1783                                 &end_time,
1784                                 true) ));
1785
1786         state->open_was_deferred = true;
1787
1788         /* allow this request to be canceled */
1789         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1790
1791         return true;
1792 }