source3/smbd/smb2_create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/globals.h"
  23 #include "../libcli/smb/smb_common.h"
  24
  25 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  26 {
  27         switch(in_oplock_level) {
  28         case SMB2_OPLOCK_LEVEL_NONE:
  29                 return NO_OPLOCK;
  30         case SMB2_OPLOCK_LEVEL_II:
  31                 return LEVEL_II_OPLOCK;
  32         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  33                 return EXCLUSIVE_OPLOCK;
  34         case SMB2_OPLOCK_LEVEL_BATCH:
  35                 return BATCH_OPLOCK;
  36         case SMB2_OPLOCK_LEVEL_LEASE:
  37                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  38                         "LEASE_OPLOCK_REQUESTED\n"));
  39                 return NO_OPLOCK;
  40         default:
  41                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  42                         "unknown level %u\n",
  43                         (unsigned int)in_oplock_level));
  44                 return NO_OPLOCK;
  45         }
  46 }
  47
  48 uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  49 {
  50         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  51                 return SMB2_OPLOCK_LEVEL_BATCH;
  52         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  53                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  54         } else if (LEVEL_II_OPLOCK_TYPE(oplock_type)) {
  55                 return SMB2_OPLOCK_LEVEL_II;
  56         } else {
  57                 return SMB2_OPLOCK_LEVEL_NONE;
  58         }
  59 }
  60
  61 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  62                         struct tevent_context *ev,
  63                         struct smbd_smb2_request *smb2req,
  64                         uint8_t in_oplock_level,
  65                         uint32_t in_impersonation_level,
  66                         uint32_t in_desired_access,
  67                         uint32_t in_file_attributes,
  68                         uint32_t in_share_access,
  69                         uint32_t in_create_disposition,
  70                         uint32_t in_create_options,
  71                         const char *in_name,
  72                         struct smb2_create_blobs in_context_blobs);
  73 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  74                         TALLOC_CTX *mem_ctx,
  75                         uint8_t *out_oplock_level,
  76                         uint32_t *out_create_action,
  77                         NTTIME *out_creation_time,
  78                         NTTIME *out_last_access_time,
  79                         NTTIME *out_last_write_time,
  80                         NTTIME *out_change_time,
  81                         uint64_t *out_allocation_size,
  82                         uint64_t *out_end_of_file,
  83                         uint32_t *out_file_attributes,
  84                         uint64_t *out_file_id_volatile,
  85                         struct smb2_create_blobs *out_context_blobs);
  86
  87 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  88 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  89 {
  90         const uint8_t *inbody;
  91         int i = smb2req->current_idx;
  92         size_t expected_body_size = 0x39;
  93         size_t body_size;
  94         uint8_t in_oplock_level;
  95         uint32_t in_impersonation_level;
  96         uint32_t in_desired_access;
  97         uint32_t in_file_attributes;
  98         uint32_t in_share_access;
  99         uint32_t in_create_disposition;
 100         uint32_t in_create_options;
 101         uint16_t in_name_offset;
 102         uint16_t in_name_length;
 103         DATA_BLOB in_name_buffer;
 104         char *in_name_string;
 105         size_t in_name_string_size;
 106         uint32_t name_offset = 0;
 107         uint32_t name_available_length = 0;
 108         uint32_t in_context_offset;
 109         uint32_t in_context_length;
 110         DATA_BLOB in_context_buffer;
 111         struct smb2_create_blobs in_context_blobs;
 112         uint32_t context_offset = 0;
 113         uint32_t context_available_length = 0;
 114         uint32_t dyn_offset;
 115         NTSTATUS status;
 116         bool ok;
 117         struct tevent_req *tsubreq;
 118
 119         if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
 120                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 121         }
 122
 123         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 124
 125         body_size = SVAL(inbody, 0x00);
 126         if (body_size != expected_body_size) {
 127                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 128         }
 129
 130         in_oplock_level         = CVAL(inbody, 0x03);
 131         in_impersonation_level  = IVAL(inbody, 0x04);
 132         in_desired_access       = IVAL(inbody, 0x18);
 133         in_file_attributes      = IVAL(inbody, 0x1C);
 134         in_share_access         = IVAL(inbody, 0x20);
 135         in_create_disposition   = IVAL(inbody, 0x24);
 136         in_create_options       = IVAL(inbody, 0x28);
 137         in_name_offset          = SVAL(inbody, 0x2C);
 138         in_name_length          = SVAL(inbody, 0x2E);
 139         in_context_offset       = IVAL(inbody, 0x30);
 140         in_context_length       = IVAL(inbody, 0x34);
 141
 142         /*
 143          * First check if the dynamic name and context buffers
 144          * are correctly specified.
 145          *
 146          * Note: That we don't check if the name and context buffers
 147          *       overlap
 148          */
 149
 150         dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
 151
 152         if (in_name_offset == 0 && in_name_length == 0) {
 153                 /* This is ok */
 154                 name_offset = 0;
 155         } else if (in_name_offset < dyn_offset) {
 156                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 157         } else {
 158                 name_offset = in_name_offset - dyn_offset;
 159         }
 160
 161         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 162                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 163         }
 164
 165         name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
 166
 167         if (in_name_length > name_available_length) {
 168                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 169         }
 170
 171         in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 172                               name_offset;
 173         in_name_buffer.length = in_name_length;
 174
 175         if (in_context_offset == 0 && in_context_length == 0) {
 176                 /* This is ok */
 177                 context_offset = 0;
 178         } else if (in_context_offset < dyn_offset) {
 179                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 180         } else {
 181                 context_offset = in_context_offset - dyn_offset;
 182         }
 183
 184         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 185                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 186         }
 187
 188         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 189
 190         if (in_context_length > context_available_length) {
 191                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 192         }
 193
 194         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 195                                   context_offset;
 196         in_context_buffer.length = in_context_length;
 197
 198         /*
 199          * Now interpret the name and context buffers
 200          */
 201
 202         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 203                                    in_name_buffer.data,
 204                                    in_name_buffer.length,
 205                                    &in_name_string,
 206                                    &in_name_string_size, false);
 207         if (!ok) {
 208                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 209         }
 210
 211         ZERO_STRUCT(in_context_blobs);
 212         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 213         if (!NT_STATUS_IS_OK(status)) {
 214                 return smbd_smb2_request_error(smb2req, status);
 215         }
 216
 217         tsubreq = smbd_smb2_create_send(smb2req,
 218                                        smb2req->sconn->smb2.event_ctx,
 219                                        smb2req,
 220                                        in_oplock_level,
 221                                        in_impersonation_level,
 222                                        in_desired_access,
 223                                        in_file_attributes,
 224                                        in_share_access,
 225                                        in_create_disposition,
 226                                        in_create_options,
 227                                        in_name_string,
 228                                        in_context_blobs);
 229         if (tsubreq == NULL) {
 230                 smb2req->subreq = NULL;
 231                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 232         }
 233         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 234
 235         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 236 }
 237
 238 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 239 {
 240         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 241         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 242 }
 243
 244 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 245 {
 246         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 247                                         struct smbd_smb2_request);
 248         int i = smb2req->current_idx;
 249         uint8_t *outhdr;
 250         DATA_BLOB outbody;
 251         DATA_BLOB outdyn;
 252         uint8_t out_oplock_level = 0;
 253         uint32_t out_create_action = 0;
 254         NTTIME out_creation_time = 0;
 255         NTTIME out_last_access_time = 0;
 256         NTTIME out_last_write_time = 0;
 257         NTTIME out_change_time = 0;
 258         uint64_t out_allocation_size = 0;
 259         uint64_t out_end_of_file = 0;
 260         uint32_t out_file_attributes = 0;
 261         uint64_t out_file_id_volatile = 0;
 262         struct smb2_create_blobs out_context_blobs;
 263         DATA_BLOB out_context_buffer;
 264         uint16_t out_context_buffer_offset = 0;
 265         NTSTATUS status;
 266         NTSTATUS error; /* transport error */
 267
 268         if (smb2req->cancelled) {
 269                 uint64_t mid = get_mid_from_smb2req(smb2req);
 270                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 271                         (unsigned long long)mid ));
 272                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 273                 if (!NT_STATUS_IS_OK(error)) {
 274                         smbd_server_connection_terminate(smb2req->sconn,
 275                                 nt_errstr(error));
 276                         return;
 277                 }
 278                 return;
 279         }
 280
 281         status = smbd_smb2_create_recv(tsubreq,
 282                                        smb2req,
 283                                        &out_oplock_level,
 284                                        &out_create_action,
 285                                        &out_creation_time,
 286                                        &out_last_access_time,
 287                                        &out_last_write_time,
 288                                        &out_change_time,
 289                                        &out_allocation_size,
 290                                        &out_end_of_file,
 291                                        &out_file_attributes,
 292                                        &out_file_id_volatile,
 293                                        &out_context_blobs);
 294         if (!NT_STATUS_IS_OK(status)) {
 295                 error = smbd_smb2_request_error(smb2req, status);
 296                 if (!NT_STATUS_IS_OK(error)) {
 297                         smbd_server_connection_terminate(smb2req->sconn,
 298                                                          nt_errstr(error));
 299                         return;
 300                 }
 301                 return;
 302         }
 303
 304         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 305         if (!NT_STATUS_IS_OK(status)) {
 306                 error = smbd_smb2_request_error(smb2req, status);
 307                 if (!NT_STATUS_IS_OK(error)) {
 308                         smbd_server_connection_terminate(smb2req->sconn,
 309                                                          nt_errstr(error));
 310                         return;
 311                 }
 312                 return;
 313         }
 314
 315         if (out_context_buffer.length > 0) {
 316                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 317         }
 318
 319         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 320
 321         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 322         if (outbody.data == NULL) {
 323                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 324                 if (!NT_STATUS_IS_OK(error)) {
 325                         smbd_server_connection_terminate(smb2req->sconn,
 326                                                          nt_errstr(error));
 327                         return;
 328                 }
 329                 return;
 330         }
 331
 332         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 333         SCVAL(outbody.data, 0x02,
 334               out_oplock_level);                /* oplock level */
 335         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 336         SIVAL(outbody.data, 0x04,
 337               out_create_action);               /* create action */
 338         SBVAL(outbody.data, 0x08,
 339               out_creation_time);               /* creation time */
 340         SBVAL(outbody.data, 0x10,
 341               out_last_access_time);            /* last access time */
 342         SBVAL(outbody.data, 0x18,
 343               out_last_write_time);             /* last write time */
 344         SBVAL(outbody.data, 0x20,
 345               out_change_time);                 /* 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, 0);           /* file id (persistent) */
 354         SBVAL(outbody.data, 0x48,
 355               out_file_id_volatile);            /* file id (volatile) */
 356         SIVAL(outbody.data, 0x50,
 357               out_context_buffer_offset);       /* create contexts offset */
 358         SIVAL(outbody.data, 0x54,
 359               out_context_buffer.length);       /* create contexts length */
 360
 361         outdyn = out_context_buffer;
 362
 363         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 364         if (!NT_STATUS_IS_OK(error)) {
 365                 smbd_server_connection_terminate(smb2req->sconn,
 366                                                  nt_errstr(error));
 367                 return;
 368         }
 369 }
 370
 371 struct smbd_smb2_create_state {
 372         struct smbd_smb2_request *smb2req;
 373         struct smb_request *smb1req;
 374         struct timed_event *te;
 375         struct timeval request_time;
 376         struct file_id id;
 377         DATA_BLOB private_data;
 378         uint8_t out_oplock_level;
 379         uint32_t out_create_action;
 380         NTTIME out_creation_time;
 381         NTTIME out_last_access_time;
 382         NTTIME out_last_write_time;
 383         NTTIME out_change_time;
 384         uint64_t out_allocation_size;
 385         uint64_t out_end_of_file;
 386         uint32_t out_file_attributes;
 387         uint64_t out_file_id_volatile;
 388         struct smb2_create_blobs out_context_blobs;
 389 };
 390
 391 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 392                         struct tevent_context *ev,
 393                         struct smbd_smb2_request *smb2req,
 394                         uint8_t in_oplock_level,
 395                         uint32_t in_impersonation_level,
 396                         uint32_t in_desired_access,
 397                         uint32_t in_file_attributes,
 398                         uint32_t in_share_access,
 399                         uint32_t in_create_disposition,
 400                         uint32_t in_create_options,
 401                         const char *in_name,
 402                         struct smb2_create_blobs in_context_blobs)
 403 {
 404         struct tevent_req *req = NULL;
 405         struct smbd_smb2_create_state *state = NULL;
 406         NTSTATUS status;
 407         struct smb_request *smb1req = NULL;
 408         files_struct *result = NULL;
 409         int info;
 410         struct timespec write_time_ts;
 411         struct smb2_create_blobs out_context_blobs;
 412
 413         ZERO_STRUCT(out_context_blobs);
 414
 415         if (!smb2req->async) {
 416                 /* New create call. */
 417                 req = tevent_req_create(mem_ctx, &state,
 418                                 struct smbd_smb2_create_state);
 419                 if (req == NULL) {
 420                         return NULL;
 421                 }
 422                 state->smb2req = smb2req;
 423                 smb2req->subreq = req; /* So we can find this when going async. */
 424
 425                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 426                 if (tevent_req_nomem(smb1req, req)) {
 427                         return tevent_req_post(req, ev);
 428                 }
 429                 state->smb1req = smb1req;
 430                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 431                         in_name));
 432         } else {
 433                 /* Re-entrant create call. */
 434                 req = smb2req->subreq;
 435                 state = tevent_req_data(req,
 436                                 struct smbd_smb2_create_state);
 437                 smb1req = state->smb1req;
 438                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 439                         in_name ));
 440         }
 441
 442         if (IS_IPC(smb1req->conn)) {
 443                 const char *pipe_name = in_name;
 444
 445                 if (!lp_nt_pipe_support()) {
 446                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 447                         return tevent_req_post(req, ev);
 448                 }
 449
 450                 /* Strip \\ off the name. */
 451                 if (pipe_name[0] == '\\') {
 452                         pipe_name++;
 453                 }
 454
 455                 status = open_np_file(smb1req, pipe_name, &result);
 456                 if (!NT_STATUS_IS_OK(status)) {
 457                         tevent_req_nterror(req, status);
 458                         return tevent_req_post(req, ev);
 459                 }
 460                 info = FILE_WAS_OPENED;
 461         } else if (CAN_PRINT(smb1req->conn)) {
 462                 status = file_new(smb1req, smb1req->conn, &result);
 463                 if(!NT_STATUS_IS_OK(status)) {
 464                         tevent_req_nterror(req, status);
 465                         return tevent_req_post(req, ev);
 466                 }
 467
 468                 status = print_fsp_open(smb1req,
 469                                         smb1req->conn,
 470                                         in_name,
 471                                         smb1req->vuid,
 472                                         result);
 473                 if (!NT_STATUS_IS_OK(status)) {
 474                         file_free(smb1req, result);
 475                         tevent_req_nterror(req, status);
 476                         return tevent_req_post(req, ev);
 477                 }
 478                 info = FILE_WAS_CREATED;
 479         } else {
 480                 char *fname;
 481                 struct smb_filename *smb_fname = NULL;
 482                 struct smb2_create_blob *exta = NULL;
 483                 struct ea_list *ea_list = NULL;
 484                 struct smb2_create_blob *mxac = NULL;
 485                 NTTIME max_access_time = 0;
 486                 struct smb2_create_blob *secd = NULL;
 487                 struct security_descriptor *sec_desc = NULL;
 488                 struct smb2_create_blob *dhnq = NULL;
 489                 struct smb2_create_blob *dhnc = 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
 495                 exta = smb2_create_blob_find(&in_context_blobs,
 496                                              SMB2_CREATE_TAG_EXTA);
 497                 mxac = smb2_create_blob_find(&in_context_blobs,
 498                                              SMB2_CREATE_TAG_MXAC);
 499                 secd = smb2_create_blob_find(&in_context_blobs,
 500                                              SMB2_CREATE_TAG_SECD);
 501                 dhnq = smb2_create_blob_find(&in_context_blobs,
 502                                              SMB2_CREATE_TAG_DHNQ);
 503                 dhnc = smb2_create_blob_find(&in_context_blobs,
 504                                              SMB2_CREATE_TAG_DHNC);
 505                 alsi = smb2_create_blob_find(&in_context_blobs,
 506                                              SMB2_CREATE_TAG_ALSI);
 507                 twrp = smb2_create_blob_find(&in_context_blobs,
 508                                              SMB2_CREATE_TAG_TWRP);
 509                 qfid = smb2_create_blob_find(&in_context_blobs,
 510                                              SMB2_CREATE_TAG_QFID);
 511
 512                 fname = talloc_strdup(state, in_name);
 513                 if (tevent_req_nomem(fname, req)) {
 514                         return tevent_req_post(req, ev);
 515                 }
 516
 517                 if (exta) {
 518                         if (dhnc) {
 519                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 520                                 return tevent_req_post(req, ev);
 521                         }
 522
 523                         ea_list = read_nttrans_ea_list(mem_ctx,
 524                                 (const char *)exta->data.data, exta->data.length);
 525                         if (!ea_list) {
 526                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 527                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 528                                 return tevent_req_post(req, ev);
 529                         }
 530                 }
 531
 532                 if (mxac) {
 533                         if (dhnc) {
 534                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 535                                 return tevent_req_post(req, ev);
 536                         }
 537
 538                         if (mxac->data.length == 0) {
 539                                 max_access_time = 0;
 540                         } else if (mxac->data.length == 8) {
 541                                 max_access_time = BVAL(mxac->data.data, 0);
 542                         } else {
 543                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 544                                 return tevent_req_post(req, ev);
 545                         }
 546                 }
 547
 548                 if (secd) {
 549                         enum ndr_err_code ndr_err;
 550
 551                         if (dhnc) {
 552                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 553                                 return tevent_req_post(req, ev);
 554                         }
 555
 556                         sec_desc = talloc_zero(state, struct security_descriptor);
 557                         if (tevent_req_nomem(sec_desc, req)) {
 558                                 return tevent_req_post(req, ev);
 559                         }
 560
 561                         ndr_err = ndr_pull_struct_blob(&secd->data,
 562                                 sec_desc, NULL, sec_desc,
 563                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 564                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 565                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 566                                          ndr_errstr(ndr_err)));
 567                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 568                                 return tevent_req_post(req, ev);
 569                         }
 570                 }
 571
 572                 if (dhnq) {
 573                         if (dhnc) {
 574                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 575                                 return tevent_req_post(req, ev);
 576                         }
 577
 578                         if (dhnq->data.length != 16) {
 579                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 580                                 return tevent_req_post(req, ev);
 581                         }
 582                         /*
 583                          * we don't support durable handles yet
 584                          * and have to ignore this
 585                          */
 586                 }
 587
 588                 if (dhnc) {
 589                         if (dhnc->data.length != 16) {
 590                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 591                                 return tevent_req_post(req, ev);
 592                         }
 593                         /* we don't support durable handles yet */
 594                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 595                         return tevent_req_post(req, ev);
 596                 }
 597
 598                 if (alsi) {
 599                         if (dhnc) {
 600                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 601                                 return tevent_req_post(req, ev);
 602                         }
 603
 604                         if (alsi->data.length != 8) {
 605                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 606                                 return tevent_req_post(req, ev);
 607                         }
 608                         allocation_size = BVAL(alsi->data.data, 0);
 609                 }
 610
 611                 if (twrp) {
 612                         NTTIME nttime;
 613                         time_t t;
 614                         struct tm *tm;
 615
 616                         if (dhnc) {
 617                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 618                                 return tevent_req_post(req, ev);
 619                         }
 620
 621                         if (twrp->data.length != 8) {
 622                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 623                                 return tevent_req_post(req, ev);
 624                         }
 625
 626                         nttime = BVAL(twrp->data.data, 0);
 627                         t = nt_time_to_unix(nttime);
 628                         tm = gmtime(&t);
 629
 630                         TALLOC_FREE(fname);
 631                         fname = talloc_asprintf(state,
 632                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 633                                         tm->tm_year + 1900,
 634                                         tm->tm_mon + 1,
 635                                         tm->tm_mday,
 636                                         tm->tm_hour,
 637                                         tm->tm_min,
 638                                         tm->tm_sec,
 639                                         in_name);
 640                         if (tevent_req_nomem(fname, req)) {
 641                                 return tevent_req_post(req, ev);
 642                         }
 643                 }
 644
 645                 if (qfid) {
 646                         if (qfid->data.length != 0) {
 647                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 648                                 return tevent_req_post(req, ev);
 649                         }
 650                 }
 651
 652                 /* these are ignored for SMB2 */
 653                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 654                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 655
 656                 /* convert '\\' into '/' */
 657                 status = check_path_syntax(fname);
 658                 if (!NT_STATUS_IS_OK(status)) {
 659                         tevent_req_nterror(req, status);
 660                         return tevent_req_post(req, ev);
 661                 }
 662
 663                 status = filename_convert(req,
 664                                           smb1req->conn,
 665                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 666                                           fname,
 667                                           0,
 668                                           NULL,
 669                                           &smb_fname);
 670                 if (!NT_STATUS_IS_OK(status)) {
 671                         tevent_req_nterror(req, status);
 672                         return tevent_req_post(req, ev);
 673                 }
 674
 675                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 676
 677                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 678                                              smb1req,
 679                                              0, /* root_dir_fid */
 680                                              smb_fname,
 681                                              in_desired_access,
 682                                              in_share_access,
 683                                              in_create_disposition,
 684                                              in_create_options,
 685                                              in_file_attributes,
 686                                              map_smb2_oplock_levels_to_samba(in_oplock_level),
 687                                              allocation_size,
 688                                              0, /* private_flags */
 689                                              sec_desc,
 690                                              ea_list,
 691                                              &result,
 692                                              &info);
 693                 if (!NT_STATUS_IS_OK(status)) {
 694                         if (open_was_deferred(smb1req->mid)) {
 695                                 return req;
 696                         }
 697                         tevent_req_nterror(req, status);
 698                         return tevent_req_post(req, ev);
 699                 }
 700
 701                 if (mxac) {
 702                         NTTIME last_write_time;
 703
 704                         unix_timespec_to_nt_time(&last_write_time,
 705                                                  result->fsp_name->st.st_ex_mtime);
 706                         if (last_write_time != max_access_time) {
 707                                 uint8_t p[8];
 708                                 uint32_t max_access_granted;
 709                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 710
 711                                 status = smbd_check_open_rights(smb1req->conn,
 712                                                         result->fsp_name,
 713                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 714                                                         &max_access_granted);
 715
 716                                 SIVAL(p, 0, NT_STATUS_V(status));
 717                                 SIVAL(p, 4, max_access_granted);
 718
 719                                 status = smb2_create_blob_add(state,
 720                                                         &out_context_blobs,
 721                                                         SMB2_CREATE_TAG_MXAC,
 722                                                         blob);
 723                                 if (!NT_STATUS_IS_OK(status)) {
 724                                         tevent_req_nterror(req, status);
 725                                         return tevent_req_post(req, ev);
 726                                 }
 727                         }
 728                 }
 729
 730                 if (qfid) {
 731                         uint8_t p[32];
 732                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 733
 734                         ZERO_STRUCT(p);
 735
 736                         /* TODO: maybe use result->file_id */
 737                         SIVAL(p, 0, result->fsp_name->st.st_ex_ino);/* FileIndexLow */
 738                         SIVAL(p, 4, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 739
 740                         status = smb2_create_blob_add(state, &out_context_blobs,
 741                                                       SMB2_CREATE_TAG_QFID,
 742                                                       blob);
 743                         if (!NT_STATUS_IS_OK(status)) {
 744                                 tevent_req_nterror(req, status);
 745                                 return tevent_req_post(req, ev);
 746                         }
 747                 }
 748         }
 749
 750         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 751
 752         state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 753
 754         if ((in_create_disposition == FILE_SUPERSEDE)
 755             && (info == FILE_WAS_OVERWRITTEN)) {
 756                 state->out_create_action = FILE_WAS_SUPERSEDED;
 757         } else {
 758                 state->out_create_action = info;
 759         }
 760         state->out_file_attributes = dos_mode(result->conn,
 761                                            result->fsp_name);
 762         /* Deal with other possible opens having a modified
 763            write time. JRA. */
 764         ZERO_STRUCT(write_time_ts);
 765         get_file_infos(result->file_id, NULL, &write_time_ts);
 766         if (!null_timespec(write_time_ts)) {
 767                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 768         }
 769
 770         unix_timespec_to_nt_time(&state->out_creation_time,
 771                         get_create_timespec(smb1req->conn, result,
 772                                         result->fsp_name));
 773         unix_timespec_to_nt_time(&state->out_last_access_time,
 774                         result->fsp_name->st.st_ex_atime);
 775         unix_timespec_to_nt_time(&state->out_last_write_time,
 776                         result->fsp_name->st.st_ex_mtime);
 777         unix_timespec_to_nt_time(&state->out_change_time,
 778                         get_change_timespec(smb1req->conn, result,
 779                                         result->fsp_name));
 780         state->out_allocation_size =
 781                         result->fsp_name->st.st_ex_blksize *
 782                         result->fsp_name->st.st_ex_blocks;
 783         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 784         if (state->out_file_attributes == 0) {
 785                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 786         }
 787         state->out_file_id_volatile = result->fnum;
 788         state->out_context_blobs = out_context_blobs;
 789
 790         tevent_req_done(req);
 791         return tevent_req_post(req, ev);
 792 }
 793
 794 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 795                         TALLOC_CTX *mem_ctx,
 796                         uint8_t *out_oplock_level,
 797                         uint32_t *out_create_action,
 798                         NTTIME *out_creation_time,
 799                         NTTIME *out_last_access_time,
 800                         NTTIME *out_last_write_time,
 801                         NTTIME *out_change_time,
 802                         uint64_t *out_allocation_size,
 803                         uint64_t *out_end_of_file,
 804                         uint32_t *out_file_attributes,
 805                         uint64_t *out_file_id_volatile,
 806                         struct smb2_create_blobs *out_context_blobs)
 807 {
 808         NTSTATUS status;
 809         struct smbd_smb2_create_state *state = tevent_req_data(req,
 810                                                struct smbd_smb2_create_state);
 811
 812         if (tevent_req_is_nterror(req, &status)) {
 813                 tevent_req_received(req);
 814                 return status;
 815         }
 816
 817         *out_oplock_level       = state->out_oplock_level;
 818         *out_create_action      = state->out_create_action;
 819         *out_creation_time      = state->out_creation_time;
 820         *out_last_access_time   = state->out_last_access_time;
 821         *out_last_write_time    = state->out_last_write_time;
 822         *out_change_time        = state->out_change_time;
 823         *out_allocation_size    = state->out_allocation_size;
 824         *out_end_of_file        = state->out_end_of_file;
 825         *out_file_attributes    = state->out_file_attributes;
 826         *out_file_id_volatile   = state->out_file_id_volatile;
 827         *out_context_blobs      = state->out_context_blobs;
 828
 829         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 830
 831         tevent_req_received(req);
 832         return NT_STATUS_OK;
 833 }
 834
 835 /*********************************************************
 836  Code for dealing with deferred opens.
 837 *********************************************************/
 838
 839 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 840                         struct timeval *p_request_time,
 841                         void **pp_state)
 842 {
 843         struct smbd_smb2_create_state *state = NULL;
 844         struct tevent_req *req = NULL;
 845
 846         if (!smb2req) {
 847                 return false;
 848         }
 849         if (!smb2req->async) {
 850                 return false;
 851         }
 852         req = smb2req->subreq;
 853         if (!req) {
 854                 return false;
 855         }
 856         state = tevent_req_data(req, struct smbd_smb2_create_state);
 857         if (!state) {
 858                 return false;
 859         }
 860         if (p_request_time) {
 861                 *p_request_time = state->request_time;
 862         }
 863         if (pp_state) {
 864                 *pp_state = (void *)state->private_data.data;
 865         }
 866         return true;
 867 }
 868
 869 /*********************************************************
 870  Re-process this call early - requested by message or
 871  close.
 872 *********************************************************/
 873
 874 static struct smbd_smb2_request *find_open_smb2req(uint64_t mid)
 875 {
 876         struct smbd_server_connection *sconn = smbd_server_conn;
 877         struct smbd_smb2_request *smb2req;
 878
 879         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 880                 uint64_t message_id = get_mid_from_smb2req(smb2req);
 881                 if (message_id == mid) {
 882                         return smb2req;
 883                 }
 884         }
 885         return NULL;
 886 }
 887
 888 bool open_was_deferred_smb2(uint64_t mid)
 889 {
 890         struct smbd_smb2_create_state *state = NULL;
 891         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 892
 893         if (!smb2req) {
 894                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 895                         (unsigned long long)mid));
 896                 return false;
 897         }
 898         if (!smb2req->subreq) {
 899                 return false;
 900         }
 901         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 902                 return false;
 903         }
 904         state = tevent_req_data(smb2req->subreq,
 905                         struct smbd_smb2_create_state);
 906         if (!state) {
 907                 return false;
 908         }
 909         /* It's not in progress if there's no timeout event. */
 910         if (!state->te) {
 911                 return false;
 912         }
 913
 914         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 915                         (unsigned long long)mid));
 916
 917         return true;
 918 }
 919
 920 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 921                                                         uint64_t mid)
 922 {
 923         struct smbd_smb2_create_state *state = NULL;
 924
 925         if (!smb2req->subreq) {
 926                 return;
 927         }
 928         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 929                 return;
 930         }
 931         state = tevent_req_data(smb2req->subreq,
 932                         struct smbd_smb2_create_state);
 933         if (!state) {
 934                 return;
 935         }
 936
 937         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 938                 "mid %llu\n",
 939                 (unsigned long long)mid ));
 940
 941         /* Ensure we don't have any outstanding timer event. */
 942         TALLOC_FREE(state->te);
 943 }
 944
 945 void remove_deferred_open_message_smb2(uint64_t mid)
 946 {
 947         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 948
 949         if (!smb2req) {
 950                 DEBUG(10,("remove_deferred_open_message_smb2: "
 951                         "can't find mid %llu\n",
 952                         (unsigned long long)mid ));
 953                 return;
 954         }
 955         remove_deferred_open_message_smb2_internal(smb2req, mid);
 956 }
 957
 958 void schedule_deferred_open_message_smb2(uint64_t mid)
 959 {
 960         struct tevent_immediate *im = NULL;
 961         struct smbd_smb2_create_state *state = NULL;
 962         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 963
 964         if (!smb2req) {
 965                 DEBUG(10,("schedule_deferred_open_message_smb2: "
 966                         "can't find mid %llu\n",
 967                         (unsigned long long)mid ));
 968                 return;
 969         }
 970         if (!smb2req->subreq) {
 971                 return;
 972         }
 973         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 974                 return;
 975         }
 976         state = tevent_req_data(smb2req->subreq,
 977                         struct smbd_smb2_create_state);
 978         if (!state) {
 979                 return;
 980         }
 981         /* Ensure we don't have any outstanding timer event. */
 982         TALLOC_FREE(state->te);
 983
 984         im = tevent_create_immediate(smb2req);
 985         if (!im) {
 986                 smbd_server_connection_terminate(smb2req->sconn,
 987                         nt_errstr(NT_STATUS_NO_MEMORY));
 988         }
 989
 990         DEBUG(10,("schedule_deferred_open_message_smb2: "
 991                 "re-processing mid %llu\n",
 992                 (unsigned long long)mid ));
 993
 994         tevent_schedule_immediate(im,
 995                         smb2req->sconn->smb2.event_ctx,
 996                         smbd_smb2_request_dispatch_immediate,
 997                         smb2req);
 998 }
 999
1000 /*********************************************************
1001  Re-process this call.
1002 *********************************************************/
1003
1004 static void smb2_deferred_open_timer(struct event_context *ev,
1005                                         struct timed_event *te,
1006                                         struct timeval _tval,
1007                                         void *private_data)
1008 {
1009         NTSTATUS status;
1010         struct smbd_smb2_create_state *state = NULL;
1011         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1012                                                 struct smbd_smb2_request);
1013
1014         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1015                 smb2req->current_idx,
1016                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1017
1018         state = tevent_req_data(smb2req->subreq,
1019                         struct smbd_smb2_create_state);
1020         if (!state) {
1021                 return;
1022         }
1023         /*
1024          * Null this out, don't talloc_free. It will
1025          * be talloc_free'd by the tevent library when
1026          * this returns.
1027          */
1028         state->te = NULL;
1029
1030         /*
1031          * This is subtle. We must null out the callback
1032          * before resheduling, else the first call to
1033          * tevent_req_nterror() causes the _receive()
1034          * function to be called, this causing tevent_req_post()
1035          * to crash.
1036          */
1037         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1038
1039         status = smbd_smb2_request_dispatch(smb2req);
1040
1041         if (!NT_STATUS_IS_OK(status)) {
1042                 smbd_server_connection_terminate(smb2req->sconn,
1043                                 nt_errstr(status));
1044         }
1045 }
1046
1047 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1048 {
1049         struct smbd_smb2_request *smb2req = NULL;
1050         struct smbd_smb2_create_state *state = tevent_req_data(req,
1051                                 struct smbd_smb2_create_state);
1052         uint64_t mid;
1053
1054         if (!state) {
1055                 return false;
1056         }
1057
1058         if (!state->smb2req) {
1059                 return false;
1060         }
1061
1062         smb2req = state->smb2req;
1063         mid = get_mid_from_smb2req(smb2req);
1064
1065         remove_deferred_open_entry(state->id, mid);
1066         remove_deferred_open_message_smb2_internal(smb2req, mid);
1067         smb2req->cancelled = true;
1068
1069         tevent_req_done(req);
1070         return true;
1071 }
1072
1073 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1074                                 struct timeval request_time,
1075                                 struct timeval timeout,
1076                                 struct file_id id,
1077                                 char *private_data,
1078                                 size_t priv_len)
1079 {
1080         struct tevent_req *req = NULL;
1081         struct smbd_smb2_create_state *state = NULL;
1082         struct timeval end_time;
1083
1084         if (!smb2req) {
1085                 return false;
1086         }
1087         req = smb2req->subreq;
1088         if (!req) {
1089                 return false;
1090         }
1091         state = tevent_req_data(req, struct smbd_smb2_create_state);
1092         if (!state) {
1093                 return false;
1094         }
1095         state->id = id;
1096         state->request_time = request_time;
1097         state->private_data = data_blob_talloc(state, private_data,
1098                                                 priv_len);
1099         if (!state->private_data.data) {
1100                 return false;
1101         }
1102 #if 0
1103         /* Boo - turns out this isn't what W2K8R2
1104            does. It actually sends the STATUS_PENDING
1105            message followed by the STATUS_SHARING_VIOLATION
1106            message. Surely this means that all open
1107            calls (even on directories) will potentially
1108            fail in a chain.... ? And I've seen directory
1109            opens as the start of a chain. JRA.
1110         */
1111         /*
1112          * More subtlety. To match W2K8R2 don't
1113          * send a "gone async" message if it's simply
1114          * a STATUS_SHARING_VIOLATION (short) wait, not
1115          * an oplock break wait. We do this by prematurely
1116          * setting smb2req->async flag.
1117          */
1118         if (timeout.tv_sec < 2) {
1119                 DEBUG(10,("push_deferred_open_message_smb2: "
1120                         "short timer wait (usec = %u). "
1121                         "Don't send async message.\n",
1122                         (unsigned int)timeout.tv_usec ));
1123                 smb2req->async = true;
1124         }
1125 #endif
1126
1127         /* Re-schedule us to retry on timer expiry. */
1128         end_time = timeval_sum(&request_time, &timeout);
1129
1130         DEBUG(10,("push_deferred_open_message_smb2: "
1131                 "timeout at %s\n",
1132                 timeval_string(talloc_tos(),
1133                                 &end_time,
1134                                 true) ));
1135
1136         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1137                                 state,
1138                                 end_time,
1139                                 smb2_deferred_open_timer,
1140                                 smb2req);
1141         if (!state->te) {
1142                 return false;
1143         }
1144
1145         /* allow this request to be canceled */
1146         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1147
1148         return true;
1149 }