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 "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25
  26 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  27 {
  28         switch(in_oplock_level) {
  29         case SMB2_OPLOCK_LEVEL_NONE:
  30                 return NO_OPLOCK;
  31         case SMB2_OPLOCK_LEVEL_II:
  32                 return LEVEL_II_OPLOCK;
  33         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  34                 return EXCLUSIVE_OPLOCK;
  35         case SMB2_OPLOCK_LEVEL_BATCH:
  36                 return BATCH_OPLOCK;
  37         case SMB2_OPLOCK_LEVEL_LEASE:
  38                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  39                         "LEASE_OPLOCK_REQUESTED\n"));
  40                 return NO_OPLOCK;
  41         default:
  42                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  43                         "unknown level %u\n",
  44                         (unsigned int)in_oplock_level));
  45                 return NO_OPLOCK;
  46         }
  47 }
  48
  49 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  50 {
  51         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  52                 return SMB2_OPLOCK_LEVEL_BATCH;
  53         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  54                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  55         } else if (LEVEL_II_OPLOCK_TYPE(oplock_type)) {
  56                 return SMB2_OPLOCK_LEVEL_II;
  57         } else {
  58                 return SMB2_OPLOCK_LEVEL_NONE;
  59         }
  60 }
  61
  62 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  63                         struct tevent_context *ev,
  64                         struct smbd_smb2_request *smb2req,
  65                         uint8_t in_oplock_level,
  66                         uint32_t in_impersonation_level,
  67                         uint32_t in_desired_access,
  68                         uint32_t in_file_attributes,
  69                         uint32_t in_share_access,
  70                         uint32_t in_create_disposition,
  71                         uint32_t in_create_options,
  72                         const char *in_name,
  73                         struct smb2_create_blobs in_context_blobs);
  74 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  75                         TALLOC_CTX *mem_ctx,
  76                         uint8_t *out_oplock_level,
  77                         uint32_t *out_create_action,
  78                         NTTIME *out_creation_time,
  79                         NTTIME *out_last_access_time,
  80                         NTTIME *out_last_write_time,
  81                         NTTIME *out_change_time,
  82                         uint64_t *out_allocation_size,
  83                         uint64_t *out_end_of_file,
  84                         uint32_t *out_file_attributes,
  85                         uint64_t *out_file_id_volatile,
  86                         struct smb2_create_blobs *out_context_blobs);
  87
  88 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  89 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  90 {
  91         const uint8_t *inbody;
  92         int i = smb2req->current_idx;
  93         size_t expected_body_size = 0x39;
  94         size_t body_size;
  95         uint8_t in_oplock_level;
  96         uint32_t in_impersonation_level;
  97         uint32_t in_desired_access;
  98         uint32_t in_file_attributes;
  99         uint32_t in_share_access;
 100         uint32_t in_create_disposition;
 101         uint32_t in_create_options;
 102         uint16_t in_name_offset;
 103         uint16_t in_name_length;
 104         DATA_BLOB in_name_buffer;
 105         char *in_name_string;
 106         size_t in_name_string_size;
 107         uint32_t name_offset = 0;
 108         uint32_t name_available_length = 0;
 109         uint32_t in_context_offset;
 110         uint32_t in_context_length;
 111         DATA_BLOB in_context_buffer;
 112         struct smb2_create_blobs in_context_blobs;
 113         uint32_t context_offset = 0;
 114         uint32_t context_available_length = 0;
 115         uint32_t dyn_offset;
 116         NTSTATUS status;
 117         bool ok;
 118         struct tevent_req *tsubreq;
 119
 120         if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
 121                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 122         }
 123
 124         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 125
 126         body_size = SVAL(inbody, 0x00);
 127         if (body_size != expected_body_size) {
 128                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 129         }
 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 + (body_size & 0xFFFFFFFE);
 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         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 163                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 164         }
 165
 166         name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
 167
 168         if (in_name_length > name_available_length) {
 169                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 170         }
 171
 172         in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 173                               name_offset;
 174         in_name_buffer.length = in_name_length;
 175
 176         if (in_context_offset == 0 && in_context_length == 0) {
 177                 /* This is ok */
 178                 context_offset = 0;
 179         } else if (in_context_offset < dyn_offset) {
 180                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 181         } else {
 182                 context_offset = in_context_offset - dyn_offset;
 183         }
 184
 185         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 186                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 187         }
 188
 189         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 190
 191         if (in_context_length > context_available_length) {
 192                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 193         }
 194
 195         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 196                                   context_offset;
 197         in_context_buffer.length = in_context_length;
 198
 199         /*
 200          * Now interpret the name and context buffers
 201          */
 202
 203         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 204                                    in_name_buffer.data,
 205                                    in_name_buffer.length,
 206                                    &in_name_string,
 207                                    &in_name_string_size, false);
 208         if (!ok) {
 209                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 210         }
 211
 212         ZERO_STRUCT(in_context_blobs);
 213         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 214         if (!NT_STATUS_IS_OK(status)) {
 215                 return smbd_smb2_request_error(smb2req, status);
 216         }
 217
 218         tsubreq = smbd_smb2_create_send(smb2req,
 219                                        smb2req->sconn->smb2.event_ctx,
 220                                        smb2req,
 221                                        in_oplock_level,
 222                                        in_impersonation_level,
 223                                        in_desired_access,
 224                                        in_file_attributes,
 225                                        in_share_access,
 226                                        in_create_disposition,
 227                                        in_create_options,
 228                                        in_name_string,
 229                                        in_context_blobs);
 230         if (tsubreq == NULL) {
 231                 smb2req->subreq = NULL;
 232                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 233         }
 234         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 235
 236         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 237 }
 238
 239 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 240 {
 241         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 242         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 243 }
 244
 245 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 246 {
 247         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 248                                         struct smbd_smb2_request);
 249         int i = smb2req->current_idx;
 250         uint8_t *outhdr;
 251         DATA_BLOB outbody;
 252         DATA_BLOB outdyn;
 253         uint8_t out_oplock_level = 0;
 254         uint32_t out_create_action = 0;
 255         NTTIME out_creation_time = 0;
 256         NTTIME out_last_access_time = 0;
 257         NTTIME out_last_write_time = 0;
 258         NTTIME out_change_time = 0;
 259         uint64_t out_allocation_size = 0;
 260         uint64_t out_end_of_file = 0;
 261         uint32_t out_file_attributes = 0;
 262         uint64_t out_file_id_volatile = 0;
 263         struct smb2_create_blobs out_context_blobs;
 264         DATA_BLOB out_context_buffer;
 265         uint16_t out_context_buffer_offset = 0;
 266         NTSTATUS status;
 267         NTSTATUS error; /* transport error */
 268
 269         if (smb2req->cancelled) {
 270                 uint64_t mid = get_mid_from_smb2req(smb2req);
 271                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 272                         (unsigned long long)mid ));
 273                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 274                 if (!NT_STATUS_IS_OK(error)) {
 275                         smbd_server_connection_terminate(smb2req->sconn,
 276                                 nt_errstr(error));
 277                         return;
 278                 }
 279                 return;
 280         }
 281
 282         status = smbd_smb2_create_recv(tsubreq,
 283                                        smb2req,
 284                                        &out_oplock_level,
 285                                        &out_create_action,
 286                                        &out_creation_time,
 287                                        &out_last_access_time,
 288                                        &out_last_write_time,
 289                                        &out_change_time,
 290                                        &out_allocation_size,
 291                                        &out_end_of_file,
 292                                        &out_file_attributes,
 293                                        &out_file_id_volatile,
 294                                        &out_context_blobs);
 295         if (!NT_STATUS_IS_OK(status)) {
 296                 error = smbd_smb2_request_error(smb2req, status);
 297                 if (!NT_STATUS_IS_OK(error)) {
 298                         smbd_server_connection_terminate(smb2req->sconn,
 299                                                          nt_errstr(error));
 300                         return;
 301                 }
 302                 return;
 303         }
 304
 305         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 306         if (!NT_STATUS_IS_OK(status)) {
 307                 error = smbd_smb2_request_error(smb2req, status);
 308                 if (!NT_STATUS_IS_OK(error)) {
 309                         smbd_server_connection_terminate(smb2req->sconn,
 310                                                          nt_errstr(error));
 311                         return;
 312                 }
 313                 return;
 314         }
 315
 316         if (out_context_buffer.length > 0) {
 317                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 318         }
 319
 320         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 321
 322         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 323         if (outbody.data == NULL) {
 324                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 325                 if (!NT_STATUS_IS_OK(error)) {
 326                         smbd_server_connection_terminate(smb2req->sconn,
 327                                                          nt_errstr(error));
 328                         return;
 329                 }
 330                 return;
 331         }
 332
 333         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 334         SCVAL(outbody.data, 0x02,
 335               out_oplock_level);                /* oplock level */
 336         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 337         SIVAL(outbody.data, 0x04,
 338               out_create_action);               /* create action */
 339         SBVAL(outbody.data, 0x08,
 340               out_creation_time);               /* creation time */
 341         SBVAL(outbody.data, 0x10,
 342               out_last_access_time);            /* last access time */
 343         SBVAL(outbody.data, 0x18,
 344               out_last_write_time);             /* last write time */
 345         SBVAL(outbody.data, 0x20,
 346               out_change_time);                 /* change time */
 347         SBVAL(outbody.data, 0x28,
 348               out_allocation_size);             /* allocation size */
 349         SBVAL(outbody.data, 0x30,
 350               out_end_of_file);                 /* end of file */
 351         SIVAL(outbody.data, 0x38,
 352               out_file_attributes);             /* file attributes */
 353         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 354         SBVAL(outbody.data, 0x40, 0);           /* 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->sconn,
 367                                                  nt_errstr(error));
 368                 return;
 369         }
 370 }
 371
 372 struct smbd_smb2_create_state {
 373         struct smbd_smb2_request *smb2req;
 374         struct smb_request *smb1req;
 375         struct timed_event *te;
 376         struct tevent_immediate *im;
 377         struct timeval request_time;
 378         struct file_id id;
 379         DATA_BLOB private_data;
 380         uint8_t out_oplock_level;
 381         uint32_t out_create_action;
 382         NTTIME out_creation_time;
 383         NTTIME out_last_access_time;
 384         NTTIME out_last_write_time;
 385         NTTIME out_change_time;
 386         uint64_t out_allocation_size;
 387         uint64_t out_end_of_file;
 388         uint32_t out_file_attributes;
 389         uint64_t out_file_id_volatile;
 390         struct smb2_create_blobs out_context_blobs;
 391 };
 392
 393 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 394                         struct tevent_context *ev,
 395                         struct smbd_smb2_request *smb2req,
 396                         uint8_t in_oplock_level,
 397                         uint32_t in_impersonation_level,
 398                         uint32_t in_desired_access,
 399                         uint32_t in_file_attributes,
 400                         uint32_t in_share_access,
 401                         uint32_t in_create_disposition,
 402                         uint32_t in_create_options,
 403                         const char *in_name,
 404                         struct smb2_create_blobs in_context_blobs)
 405 {
 406         struct tevent_req *req = NULL;
 407         struct smbd_smb2_create_state *state = NULL;
 408         NTSTATUS status;
 409         struct smb_request *smb1req = NULL;
 410         files_struct *result = NULL;
 411         int info;
 412         struct timespec write_time_ts;
 413         struct smb2_create_blobs out_context_blobs;
 414
 415         ZERO_STRUCT(out_context_blobs);
 416
 417         if (!smb2req->async) {
 418                 /* New create call. */
 419                 req = tevent_req_create(mem_ctx, &state,
 420                                 struct smbd_smb2_create_state);
 421                 if (req == NULL) {
 422                         return NULL;
 423                 }
 424                 state->smb2req = smb2req;
 425                 smb2req->subreq = req; /* So we can find this when going async. */
 426
 427                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 428                 if (tevent_req_nomem(smb1req, req)) {
 429                         return tevent_req_post(req, ev);
 430                 }
 431                 state->smb1req = smb1req;
 432                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 433                         in_name));
 434         } else {
 435                 /* Re-entrant create call. */
 436                 req = smb2req->subreq;
 437                 state = tevent_req_data(req,
 438                                 struct smbd_smb2_create_state);
 439                 smb1req = state->smb1req;
 440                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 441                         in_name ));
 442         }
 443
 444         if (IS_IPC(smb1req->conn)) {
 445                 const char *pipe_name = in_name;
 446
 447                 if (!lp_nt_pipe_support()) {
 448                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 449                         return tevent_req_post(req, ev);
 450                 }
 451
 452                 /* Strip \\ off the name. */
 453                 if (pipe_name[0] == '\\') {
 454                         pipe_name++;
 455                 }
 456
 457                 status = open_np_file(smb1req, pipe_name, &result);
 458                 if (!NT_STATUS_IS_OK(status)) {
 459                         tevent_req_nterror(req, status);
 460                         return tevent_req_post(req, ev);
 461                 }
 462                 info = FILE_WAS_OPENED;
 463         } else if (CAN_PRINT(smb1req->conn)) {
 464                 status = file_new(smb1req, smb1req->conn, &result);
 465                 if(!NT_STATUS_IS_OK(status)) {
 466                         tevent_req_nterror(req, status);
 467                         return tevent_req_post(req, ev);
 468                 }
 469
 470                 status = print_fsp_open(smb1req,
 471                                         smb1req->conn,
 472                                         in_name,
 473                                         smb1req->vuid,
 474                                         result);
 475                 if (!NT_STATUS_IS_OK(status)) {
 476                         file_free(smb1req, result);
 477                         tevent_req_nterror(req, status);
 478                         return tevent_req_post(req, ev);
 479                 }
 480                 info = FILE_WAS_CREATED;
 481         } else {
 482                 char *fname;
 483                 struct smb_filename *smb_fname = NULL;
 484                 struct smb2_create_blob *exta = NULL;
 485                 struct ea_list *ea_list = NULL;
 486                 struct smb2_create_blob *mxac = NULL;
 487                 NTTIME max_access_time = 0;
 488                 struct smb2_create_blob *secd = NULL;
 489                 struct security_descriptor *sec_desc = NULL;
 490                 struct smb2_create_blob *dhnq = NULL;
 491                 struct smb2_create_blob *dhnc = NULL;
 492                 struct smb2_create_blob *alsi = NULL;
 493                 uint64_t allocation_size = 0;
 494                 struct smb2_create_blob *twrp = NULL;
 495                 struct smb2_create_blob *qfid = NULL;
 496
 497                 exta = smb2_create_blob_find(&in_context_blobs,
 498                                              SMB2_CREATE_TAG_EXTA);
 499                 mxac = smb2_create_blob_find(&in_context_blobs,
 500                                              SMB2_CREATE_TAG_MXAC);
 501                 secd = smb2_create_blob_find(&in_context_blobs,
 502                                              SMB2_CREATE_TAG_SECD);
 503                 dhnq = smb2_create_blob_find(&in_context_blobs,
 504                                              SMB2_CREATE_TAG_DHNQ);
 505                 dhnc = smb2_create_blob_find(&in_context_blobs,
 506                                              SMB2_CREATE_TAG_DHNC);
 507                 alsi = smb2_create_blob_find(&in_context_blobs,
 508                                              SMB2_CREATE_TAG_ALSI);
 509                 twrp = smb2_create_blob_find(&in_context_blobs,
 510                                              SMB2_CREATE_TAG_TWRP);
 511                 qfid = smb2_create_blob_find(&in_context_blobs,
 512                                              SMB2_CREATE_TAG_QFID);
 513
 514                 fname = talloc_strdup(state, in_name);
 515                 if (tevent_req_nomem(fname, req)) {
 516                         return tevent_req_post(req, ev);
 517                 }
 518
 519                 if (exta) {
 520                         if (dhnc) {
 521                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 522                                 return tevent_req_post(req, ev);
 523                         }
 524
 525                         ea_list = read_nttrans_ea_list(mem_ctx,
 526                                 (const char *)exta->data.data, exta->data.length);
 527                         if (!ea_list) {
 528                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 529                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 530                                 return tevent_req_post(req, ev);
 531                         }
 532                 }
 533
 534                 if (mxac) {
 535                         if (dhnc) {
 536                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 537                                 return tevent_req_post(req, ev);
 538                         }
 539
 540                         if (mxac->data.length == 0) {
 541                                 max_access_time = 0;
 542                         } else if (mxac->data.length == 8) {
 543                                 max_access_time = BVAL(mxac->data.data, 0);
 544                         } else {
 545                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 546                                 return tevent_req_post(req, ev);
 547                         }
 548                 }
 549
 550                 if (secd) {
 551                         enum ndr_err_code ndr_err;
 552
 553                         if (dhnc) {
 554                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 555                                 return tevent_req_post(req, ev);
 556                         }
 557
 558                         sec_desc = talloc_zero(state, struct security_descriptor);
 559                         if (tevent_req_nomem(sec_desc, req)) {
 560                                 return tevent_req_post(req, ev);
 561                         }
 562
 563                         ndr_err = ndr_pull_struct_blob(&secd->data,
 564                                 sec_desc, NULL, sec_desc,
 565                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 566                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 567                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 568                                          ndr_errstr(ndr_err)));
 569                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 570                                 return tevent_req_post(req, ev);
 571                         }
 572                 }
 573
 574                 if (dhnq) {
 575                         if (dhnc) {
 576                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 577                                 return tevent_req_post(req, ev);
 578                         }
 579
 580                         if (dhnq->data.length != 16) {
 581                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 582                                 return tevent_req_post(req, ev);
 583                         }
 584                         /*
 585                          * we don't support durable handles yet
 586                          * and have to ignore this
 587                          */
 588                 }
 589
 590                 if (dhnc) {
 591                         if (dhnc->data.length != 16) {
 592                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 593                                 return tevent_req_post(req, ev);
 594                         }
 595                         /* we don't support durable handles yet */
 596                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 597                         return tevent_req_post(req, ev);
 598                 }
 599
 600                 if (alsi) {
 601                         if (dhnc) {
 602                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 603                                 return tevent_req_post(req, ev);
 604                         }
 605
 606                         if (alsi->data.length != 8) {
 607                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 608                                 return tevent_req_post(req, ev);
 609                         }
 610                         allocation_size = BVAL(alsi->data.data, 0);
 611                 }
 612
 613                 if (twrp) {
 614                         NTTIME nttime;
 615                         time_t t;
 616                         struct tm *tm;
 617
 618                         if (dhnc) {
 619                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 620                                 return tevent_req_post(req, ev);
 621                         }
 622
 623                         if (twrp->data.length != 8) {
 624                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 625                                 return tevent_req_post(req, ev);
 626                         }
 627
 628                         nttime = BVAL(twrp->data.data, 0);
 629                         t = nt_time_to_unix(nttime);
 630                         tm = gmtime(&t);
 631
 632                         TALLOC_FREE(fname);
 633                         fname = talloc_asprintf(state,
 634                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 635                                         tm->tm_year + 1900,
 636                                         tm->tm_mon + 1,
 637                                         tm->tm_mday,
 638                                         tm->tm_hour,
 639                                         tm->tm_min,
 640                                         tm->tm_sec,
 641                                         in_name);
 642                         if (tevent_req_nomem(fname, req)) {
 643                                 return tevent_req_post(req, ev);
 644                         }
 645                 }
 646
 647                 if (qfid) {
 648                         if (qfid->data.length != 0) {
 649                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 650                                 return tevent_req_post(req, ev);
 651                         }
 652                 }
 653
 654                 /* these are ignored for SMB2 */
 655                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 656                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 657
 658                 /* convert '\\' into '/' */
 659                 status = check_path_syntax(fname);
 660                 if (!NT_STATUS_IS_OK(status)) {
 661                         tevent_req_nterror(req, status);
 662                         return tevent_req_post(req, ev);
 663                 }
 664
 665                 status = filename_convert(req,
 666                                           smb1req->conn,
 667                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 668                                           fname,
 669                                           0,
 670                                           NULL,
 671                                           &smb_fname);
 672                 if (!NT_STATUS_IS_OK(status)) {
 673                         tevent_req_nterror(req, status);
 674                         return tevent_req_post(req, ev);
 675                 }
 676
 677                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 678
 679                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 680                                              smb1req,
 681                                              0, /* root_dir_fid */
 682                                              smb_fname,
 683                                              in_desired_access,
 684                                              in_share_access,
 685                                              in_create_disposition,
 686                                              in_create_options,
 687                                              in_file_attributes,
 688                                              map_smb2_oplock_levels_to_samba(in_oplock_level),
 689                                              allocation_size,
 690                                              0, /* private_flags */
 691                                              sec_desc,
 692                                              ea_list,
 693                                              &result,
 694                                              &info);
 695                 if (!NT_STATUS_IS_OK(status)) {
 696                         if (open_was_deferred(smb1req->mid)) {
 697                                 return req;
 698                         }
 699                         tevent_req_nterror(req, status);
 700                         return tevent_req_post(req, ev);
 701                 }
 702
 703                 if (mxac) {
 704                         NTTIME last_write_time;
 705
 706                         unix_timespec_to_nt_time(&last_write_time,
 707                                                  result->fsp_name->st.st_ex_mtime);
 708                         if (last_write_time != max_access_time) {
 709                                 uint8_t p[8];
 710                                 uint32_t max_access_granted;
 711                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 712
 713                                 status = smbd_check_open_rights(smb1req->conn,
 714                                                         result->fsp_name,
 715                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 716                                                         &max_access_granted);
 717
 718                                 SIVAL(p, 0, NT_STATUS_V(status));
 719                                 SIVAL(p, 4, max_access_granted);
 720
 721                                 status = smb2_create_blob_add(state,
 722                                                         &out_context_blobs,
 723                                                         SMB2_CREATE_TAG_MXAC,
 724                                                         blob);
 725                                 if (!NT_STATUS_IS_OK(status)) {
 726                                         tevent_req_nterror(req, status);
 727                                         return tevent_req_post(req, ev);
 728                                 }
 729                         }
 730                 }
 731
 732                 if (qfid) {
 733                         uint8_t p[32];
 734                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 735
 736                         ZERO_STRUCT(p);
 737
 738                         /* TODO: maybe use result->file_id */
 739                         SIVAL(p, 0, result->fsp_name->st.st_ex_ino);/* FileIndexLow */
 740                         SIVAL(p, 4, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 741
 742                         status = smb2_create_blob_add(state, &out_context_blobs,
 743                                                       SMB2_CREATE_TAG_QFID,
 744                                                       blob);
 745                         if (!NT_STATUS_IS_OK(status)) {
 746                                 tevent_req_nterror(req, status);
 747                                 return tevent_req_post(req, ev);
 748                         }
 749                 }
 750         }
 751
 752         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 753
 754         state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 755
 756         if ((in_create_disposition == FILE_SUPERSEDE)
 757             && (info == FILE_WAS_OVERWRITTEN)) {
 758                 state->out_create_action = FILE_WAS_SUPERSEDED;
 759         } else {
 760                 state->out_create_action = info;
 761         }
 762         state->out_file_attributes = dos_mode(result->conn,
 763                                            result->fsp_name);
 764         /* Deal with other possible opens having a modified
 765            write time. JRA. */
 766         ZERO_STRUCT(write_time_ts);
 767         get_file_infos(result->file_id, NULL, &write_time_ts);
 768         if (!null_timespec(write_time_ts)) {
 769                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 770         }
 771
 772         unix_timespec_to_nt_time(&state->out_creation_time,
 773                         get_create_timespec(smb1req->conn, result,
 774                                         result->fsp_name));
 775         unix_timespec_to_nt_time(&state->out_last_access_time,
 776                         result->fsp_name->st.st_ex_atime);
 777         unix_timespec_to_nt_time(&state->out_last_write_time,
 778                         result->fsp_name->st.st_ex_mtime);
 779         unix_timespec_to_nt_time(&state->out_change_time,
 780                         get_change_timespec(smb1req->conn, result,
 781                                         result->fsp_name));
 782         state->out_allocation_size =
 783                         result->fsp_name->st.st_ex_blksize *
 784                         result->fsp_name->st.st_ex_blocks;
 785         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 786         if (state->out_file_attributes == 0) {
 787                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 788         }
 789         state->out_file_id_volatile = result->fnum;
 790         state->out_context_blobs = out_context_blobs;
 791
 792         tevent_req_done(req);
 793         return tevent_req_post(req, ev);
 794 }
 795
 796 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 797                         TALLOC_CTX *mem_ctx,
 798                         uint8_t *out_oplock_level,
 799                         uint32_t *out_create_action,
 800                         NTTIME *out_creation_time,
 801                         NTTIME *out_last_access_time,
 802                         NTTIME *out_last_write_time,
 803                         NTTIME *out_change_time,
 804                         uint64_t *out_allocation_size,
 805                         uint64_t *out_end_of_file,
 806                         uint32_t *out_file_attributes,
 807                         uint64_t *out_file_id_volatile,
 808                         struct smb2_create_blobs *out_context_blobs)
 809 {
 810         NTSTATUS status;
 811         struct smbd_smb2_create_state *state = tevent_req_data(req,
 812                                                struct smbd_smb2_create_state);
 813
 814         if (tevent_req_is_nterror(req, &status)) {
 815                 tevent_req_received(req);
 816                 return status;
 817         }
 818
 819         *out_oplock_level       = state->out_oplock_level;
 820         *out_create_action      = state->out_create_action;
 821         *out_creation_time      = state->out_creation_time;
 822         *out_last_access_time   = state->out_last_access_time;
 823         *out_last_write_time    = state->out_last_write_time;
 824         *out_change_time        = state->out_change_time;
 825         *out_allocation_size    = state->out_allocation_size;
 826         *out_end_of_file        = state->out_end_of_file;
 827         *out_file_attributes    = state->out_file_attributes;
 828         *out_file_id_volatile   = state->out_file_id_volatile;
 829         *out_context_blobs      = state->out_context_blobs;
 830
 831         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 832
 833         tevent_req_received(req);
 834         return NT_STATUS_OK;
 835 }
 836
 837 /*********************************************************
 838  Code for dealing with deferred opens.
 839 *********************************************************/
 840
 841 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 842                         struct timeval *p_request_time,
 843                         void **pp_state)
 844 {
 845         struct smbd_smb2_create_state *state = NULL;
 846         struct tevent_req *req = NULL;
 847
 848         if (!smb2req) {
 849                 return false;
 850         }
 851         if (!smb2req->async) {
 852                 return false;
 853         }
 854         req = smb2req->subreq;
 855         if (!req) {
 856                 return false;
 857         }
 858         state = tevent_req_data(req, struct smbd_smb2_create_state);
 859         if (!state) {
 860                 return false;
 861         }
 862         if (p_request_time) {
 863                 *p_request_time = state->request_time;
 864         }
 865         if (pp_state) {
 866                 *pp_state = (void *)state->private_data.data;
 867         }
 868         return true;
 869 }
 870
 871 /*********************************************************
 872  Re-process this call early - requested by message or
 873  close.
 874 *********************************************************/
 875
 876 static struct smbd_smb2_request *find_open_smb2req(uint64_t mid)
 877 {
 878         struct smbd_server_connection *sconn = smbd_server_conn;
 879         struct smbd_smb2_request *smb2req;
 880
 881         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 882                 uint64_t message_id;
 883                 if (smb2req->subreq == NULL) {
 884                         /* This message has been processed. */
 885                         continue;
 886                 }
 887                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
 888                         /* This message has been processed. */
 889                         continue;
 890                 }
 891                 message_id = get_mid_from_smb2req(smb2req);
 892                 if (message_id == mid) {
 893                         return smb2req;
 894                 }
 895         }
 896         return NULL;
 897 }
 898
 899 bool open_was_deferred_smb2(uint64_t mid)
 900 {
 901         struct smbd_smb2_create_state *state = NULL;
 902         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 903
 904         if (!smb2req) {
 905                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 906                         (unsigned long long)mid));
 907                 return false;
 908         }
 909         if (!smb2req->subreq) {
 910                 return false;
 911         }
 912         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 913                 return false;
 914         }
 915         state = tevent_req_data(smb2req->subreq,
 916                         struct smbd_smb2_create_state);
 917         if (!state) {
 918                 return false;
 919         }
 920         /* It's not in progress if there's no timeout event. */
 921         if (!state->te) {
 922                 return false;
 923         }
 924
 925         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 926                         (unsigned long long)mid));
 927
 928         return true;
 929 }
 930
 931 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 932                                                         uint64_t mid)
 933 {
 934         struct smbd_smb2_create_state *state = NULL;
 935
 936         if (!smb2req->subreq) {
 937                 return;
 938         }
 939         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 940                 return;
 941         }
 942         state = tevent_req_data(smb2req->subreq,
 943                         struct smbd_smb2_create_state);
 944         if (!state) {
 945                 return;
 946         }
 947
 948         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 949                 "mid %llu\n",
 950                 (unsigned long long)mid ));
 951
 952         /* Ensure we don't have any outstanding timer event. */
 953         TALLOC_FREE(state->te);
 954         /* Ensure we don't have any outstanding immediate event. */
 955         TALLOC_FREE(state->im);
 956 }
 957
 958 void remove_deferred_open_message_smb2(uint64_t mid)
 959 {
 960         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 961
 962         if (!smb2req) {
 963                 DEBUG(10,("remove_deferred_open_message_smb2: "
 964                         "can't find mid %llu\n",
 965                         (unsigned long long)mid ));
 966                 return;
 967         }
 968         remove_deferred_open_message_smb2_internal(smb2req, mid);
 969 }
 970
 971 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
 972                                         struct tevent_immediate *im,
 973                                         void *private_data)
 974 {
 975         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
 976                                         struct smbd_smb2_request);
 977         struct smbd_server_connection *sconn = smb2req->sconn;
 978         uint64_t mid = get_mid_from_smb2req(smb2req);
 979         NTSTATUS status;
 980
 981         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
 982                 "re-dispatching mid %llu\n",
 983                 (unsigned long long)mid ));
 984
 985         status = smbd_smb2_request_dispatch(smb2req);
 986         if (!NT_STATUS_IS_OK(status)) {
 987                 smbd_server_connection_terminate(sconn, nt_errstr(status));
 988                 return;
 989         }
 990 }
 991
 992 void schedule_deferred_open_message_smb2(uint64_t mid)
 993 {
 994         struct smbd_smb2_create_state *state = NULL;
 995         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 996
 997         if (!smb2req) {
 998                 DEBUG(10,("schedule_deferred_open_message_smb2: "
 999                         "can't find mid %llu\n",
1000                         (unsigned long long)mid ));
1001                 return;
1002         }
1003         if (!smb2req->subreq) {
1004                 return;
1005         }
1006         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1007                 return;
1008         }
1009         state = tevent_req_data(smb2req->subreq,
1010                         struct smbd_smb2_create_state);
1011         if (!state) {
1012                 return;
1013         }
1014
1015         /* Ensure we don't have any outstanding timer event. */
1016         TALLOC_FREE(state->te);
1017         /* Ensure we don't have any outstanding immediate event. */
1018         TALLOC_FREE(state->im);
1019
1020         /*
1021          * This is subtle. We must null out the callback
1022          * before resheduling, else the first call to
1023          * tevent_req_nterror() causes the _receive()
1024          * function to be called, this causing tevent_req_post()
1025          * to crash.
1026          */
1027         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1028
1029         state->im = tevent_create_immediate(smb2req);
1030         if (!state->im) {
1031                 smbd_server_connection_terminate(smb2req->sconn,
1032                         nt_errstr(NT_STATUS_NO_MEMORY));
1033         }
1034
1035         DEBUG(10,("schedule_deferred_open_message_smb2: "
1036                 "re-processing mid %llu\n",
1037                 (unsigned long long)mid ));
1038
1039         tevent_schedule_immediate(state->im,
1040                         smb2req->sconn->smb2.event_ctx,
1041                         smbd_smb2_create_request_dispatch_immediate,
1042                         smb2req);
1043 }
1044
1045 /*********************************************************
1046  Re-process this call.
1047 *********************************************************/
1048
1049 static void smb2_deferred_open_timer(struct event_context *ev,
1050                                         struct timed_event *te,
1051                                         struct timeval _tval,
1052                                         void *private_data)
1053 {
1054         NTSTATUS status;
1055         struct smbd_smb2_create_state *state = NULL;
1056         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1057                                                 struct smbd_smb2_request);
1058
1059         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1060                 smb2req->current_idx,
1061                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1062
1063         state = tevent_req_data(smb2req->subreq,
1064                         struct smbd_smb2_create_state);
1065         if (!state) {
1066                 return;
1067         }
1068         /*
1069          * Null this out, don't talloc_free. It will
1070          * be talloc_free'd by the tevent library when
1071          * this returns.
1072          */
1073         state->te = NULL;
1074         /* Ensure we don't have any outstanding immediate event. */
1075         TALLOC_FREE(state->im);
1076
1077         /*
1078          * This is subtle. We must null out the callback
1079          * before resheduling, else the first call to
1080          * tevent_req_nterror() causes the _receive()
1081          * function to be called, this causing tevent_req_post()
1082          * to crash.
1083          */
1084         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1085
1086         status = smbd_smb2_request_dispatch(smb2req);
1087
1088         if (!NT_STATUS_IS_OK(status)) {
1089                 smbd_server_connection_terminate(smb2req->sconn,
1090                                 nt_errstr(status));
1091         }
1092 }
1093
1094 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1095 {
1096         struct smbd_smb2_request *smb2req = NULL;
1097         struct smbd_smb2_create_state *state = tevent_req_data(req,
1098                                 struct smbd_smb2_create_state);
1099         uint64_t mid;
1100
1101         if (!state) {
1102                 return false;
1103         }
1104
1105         if (!state->smb2req) {
1106                 return false;
1107         }
1108
1109         smb2req = state->smb2req;
1110         mid = get_mid_from_smb2req(smb2req);
1111
1112         remove_deferred_open_entry(state->id, mid);
1113         remove_deferred_open_message_smb2_internal(smb2req, mid);
1114         smb2req->cancelled = true;
1115
1116         tevent_req_done(req);
1117         return true;
1118 }
1119
1120 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1121                                 struct timeval request_time,
1122                                 struct timeval timeout,
1123                                 struct file_id id,
1124                                 char *private_data,
1125                                 size_t priv_len)
1126 {
1127         struct tevent_req *req = NULL;
1128         struct smbd_smb2_create_state *state = NULL;
1129         struct timeval end_time;
1130
1131         if (!smb2req) {
1132                 return false;
1133         }
1134         req = smb2req->subreq;
1135         if (!req) {
1136                 return false;
1137         }
1138         state = tevent_req_data(req, struct smbd_smb2_create_state);
1139         if (!state) {
1140                 return false;
1141         }
1142         state->id = id;
1143         state->request_time = request_time;
1144         state->private_data = data_blob_talloc(state, private_data,
1145                                                 priv_len);
1146         if (!state->private_data.data) {
1147                 return false;
1148         }
1149 #if 0
1150         /* Boo - turns out this isn't what W2K8R2
1151            does. It actually sends the STATUS_PENDING
1152            message followed by the STATUS_SHARING_VIOLATION
1153            message. Surely this means that all open
1154            calls (even on directories) will potentially
1155            fail in a chain.... ? And I've seen directory
1156            opens as the start of a chain. JRA.
1157         */
1158         /*
1159          * More subtlety. To match W2K8R2 don't
1160          * send a "gone async" message if it's simply
1161          * a STATUS_SHARING_VIOLATION (short) wait, not
1162          * an oplock break wait. We do this by prematurely
1163          * setting smb2req->async flag.
1164          */
1165         if (timeout.tv_sec < 2) {
1166                 DEBUG(10,("push_deferred_open_message_smb2: "
1167                         "short timer wait (usec = %u). "
1168                         "Don't send async message.\n",
1169                         (unsigned int)timeout.tv_usec ));
1170                 smb2req->async = true;
1171         }
1172 #endif
1173
1174         /* Re-schedule us to retry on timer expiry. */
1175         end_time = timeval_sum(&request_time, &timeout);
1176
1177         DEBUG(10,("push_deferred_open_message_smb2: "
1178                 "timeout at %s\n",
1179                 timeval_string(talloc_tos(),
1180                                 &end_time,
1181                                 true) ));
1182
1183         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1184                                 state,
1185                                 end_time,
1186                                 smb2_deferred_open_timer,
1187                                 smb2req);
1188         if (!state->te) {
1189                 return false;
1190         }
1191
1192         /* allow this request to be canceled */
1193         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1194
1195         return true;
1196 }