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 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  26                         struct tevent_context *ev,
  27                         struct smbd_smb2_request *smb2req,
  28                         uint8_t in_oplock_level,
  29                         uint32_t in_impersonation_level,
  30                         uint32_t in_desired_access,
  31                         uint32_t in_file_attributes,
  32                         uint32_t in_share_access,
  33                         uint32_t in_create_disposition,
  34                         uint32_t in_create_options,
  35                         const char *in_name,
  36                         struct smb2_create_blobs in_context_blobs);
  37 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  38                         TALLOC_CTX *mem_ctx,
  39                         uint8_t *out_oplock_level,
  40                         uint32_t *out_create_action,
  41                         NTTIME *out_creation_time,
  42                         NTTIME *out_last_access_time,
  43                         NTTIME *out_last_write_time,
  44                         NTTIME *out_change_time,
  45                         uint64_t *out_allocation_size,
  46                         uint64_t *out_end_of_file,
  47                         uint32_t *out_file_attributes,
  48                         uint64_t *out_file_id_volatile,
  49                         struct smb2_create_blobs *out_context_blobs);
  50
  51 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  52 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  53 {
  54         const uint8_t *inbody;
  55         int i = smb2req->current_idx;
  56         size_t expected_body_size = 0x39;
  57         size_t body_size;
  58         uint8_t in_oplock_level;
  59         uint32_t in_impersonation_level;
  60         uint32_t in_desired_access;
  61         uint32_t in_file_attributes;
  62         uint32_t in_share_access;
  63         uint32_t in_create_disposition;
  64         uint32_t in_create_options;
  65         uint16_t in_name_offset;
  66         uint16_t in_name_length;
  67         DATA_BLOB in_name_buffer;
  68         char *in_name_string;
  69         size_t in_name_string_size;
  70         uint32_t name_offset = 0;
  71         uint32_t name_available_length = 0;
  72         uint32_t in_context_offset;
  73         uint32_t in_context_length;
  74         DATA_BLOB in_context_buffer;
  75         struct smb2_create_blobs in_context_blobs;
  76         uint32_t context_offset = 0;
  77         uint32_t context_available_length = 0;
  78         uint32_t dyn_offset;
  79         NTSTATUS status;
  80         bool ok;
  81         struct tevent_req *tsubreq;
  82
  83         if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  84                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
  85         }
  86
  87         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
  88
  89         body_size = SVAL(inbody, 0x00);
  90         if (body_size != expected_body_size) {
  91                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
  92         }
  93
  94         in_oplock_level         = CVAL(inbody, 0x03);
  95         in_impersonation_level  = IVAL(inbody, 0x04);
  96         in_desired_access       = IVAL(inbody, 0x18);
  97         in_file_attributes      = IVAL(inbody, 0x1C);
  98         in_share_access         = IVAL(inbody, 0x20);
  99         in_create_disposition   = IVAL(inbody, 0x24);
 100         in_create_options       = IVAL(inbody, 0x28);
 101         in_name_offset          = SVAL(inbody, 0x2C);
 102         in_name_length          = SVAL(inbody, 0x2E);
 103         in_context_offset       = IVAL(inbody, 0x30);
 104         in_context_length       = IVAL(inbody, 0x34);
 105
 106         /*
 107          * First check if the dynamic name and context buffers
 108          * are correctly specified.
 109          *
 110          * Note: That we don't check if the name and context buffers
 111          *       overlap
 112          */
 113
 114         dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
 115
 116         if (in_name_offset == 0 && in_name_length == 0) {
 117                 /* This is ok */
 118                 name_offset = 0;
 119         } else if (in_name_offset < dyn_offset) {
 120                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 121         } else {
 122                 name_offset = in_name_offset - dyn_offset;
 123         }
 124
 125         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 126                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 127         }
 128
 129         name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
 130
 131         if (in_name_length > name_available_length) {
 132                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 133         }
 134
 135         in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 136                               name_offset;
 137         in_name_buffer.length = in_name_length;
 138
 139         if (in_context_offset == 0 && in_context_length == 0) {
 140                 /* This is ok */
 141                 context_offset = 0;
 142         } else if (in_context_offset < dyn_offset) {
 143                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 144         } else {
 145                 context_offset = in_context_offset - dyn_offset;
 146         }
 147
 148         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 149                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 150         }
 151
 152         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 153
 154         if (in_context_length > context_available_length) {
 155                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 156         }
 157
 158         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 159                                   context_offset;
 160         in_context_buffer.length = in_context_length;
 161
 162         /*
 163          * Now interpret the name and context buffers
 164          */
 165
 166         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 167                                    in_name_buffer.data,
 168                                    in_name_buffer.length,
 169                                    &in_name_string,
 170                                    &in_name_string_size, false);
 171         if (!ok) {
 172                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 173         }
 174
 175         ZERO_STRUCT(in_context_blobs);
 176         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 177         if (!NT_STATUS_IS_OK(status)) {
 178                 return smbd_smb2_request_error(smb2req, status);
 179         }
 180
 181         tsubreq = smbd_smb2_create_send(smb2req,
 182                                        smb2req->sconn->smb2.event_ctx,
 183                                        smb2req,
 184                                        in_oplock_level,
 185                                        in_impersonation_level,
 186                                        in_desired_access,
 187                                        in_file_attributes,
 188                                        in_share_access,
 189                                        in_create_disposition,
 190                                        in_create_options,
 191                                        in_name_string,
 192                                        in_context_blobs);
 193         if (tsubreq == NULL) {
 194                 smb2req->subreq = NULL;
 195                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 196         }
 197         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 198
 199         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 200 }
 201
 202 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 203 {
 204         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 205                                         struct smbd_smb2_request);
 206         int i = smb2req->current_idx;
 207         uint8_t *outhdr;
 208         DATA_BLOB outbody;
 209         DATA_BLOB outdyn;
 210         uint8_t out_oplock_level = 0;
 211         uint32_t out_create_action = 0;
 212         NTTIME out_creation_time = 0;
 213         NTTIME out_last_access_time = 0;
 214         NTTIME out_last_write_time = 0;
 215         NTTIME out_change_time = 0;
 216         uint64_t out_allocation_size = 0;
 217         uint64_t out_end_of_file = 0;
 218         uint32_t out_file_attributes = 0;
 219         uint64_t out_file_id_volatile = 0;
 220         struct smb2_create_blobs out_context_blobs;
 221         DATA_BLOB out_context_buffer;
 222         uint16_t out_context_buffer_offset = 0;
 223         NTSTATUS status;
 224         NTSTATUS error; /* transport error */
 225
 226         status = smbd_smb2_create_recv(tsubreq,
 227                                        smb2req,
 228                                        &out_oplock_level,
 229                                        &out_create_action,
 230                                        &out_creation_time,
 231                                        &out_last_access_time,
 232                                        &out_last_write_time,
 233                                        &out_change_time,
 234                                        &out_allocation_size,
 235                                        &out_end_of_file,
 236                                        &out_file_attributes,
 237                                        &out_file_id_volatile,
 238                                        &out_context_blobs);
 239         if (!NT_STATUS_IS_OK(status)) {
 240                 error = smbd_smb2_request_error(smb2req, status);
 241                 if (!NT_STATUS_IS_OK(error)) {
 242                         smbd_server_connection_terminate(smb2req->sconn,
 243                                                          nt_errstr(error));
 244                         return;
 245                 }
 246                 return;
 247         }
 248
 249         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 250         if (!NT_STATUS_IS_OK(status)) {
 251                 error = smbd_smb2_request_error(smb2req, status);
 252                 if (!NT_STATUS_IS_OK(error)) {
 253                         smbd_server_connection_terminate(smb2req->sconn,
 254                                                          nt_errstr(error));
 255                         return;
 256                 }
 257                 return;
 258         }
 259
 260         if (out_context_buffer.length > 0) {
 261                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 262         }
 263
 264         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 265
 266         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 267         if (outbody.data == NULL) {
 268                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 269                 if (!NT_STATUS_IS_OK(error)) {
 270                         smbd_server_connection_terminate(smb2req->sconn,
 271                                                          nt_errstr(error));
 272                         return;
 273                 }
 274                 return;
 275         }
 276
 277         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 278         SCVAL(outbody.data, 0x02,
 279               out_oplock_level);                /* oplock level */
 280         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 281         SIVAL(outbody.data, 0x04,
 282               out_create_action);               /* create action */
 283         SBVAL(outbody.data, 0x08,
 284               out_creation_time);               /* creation time */
 285         SBVAL(outbody.data, 0x10,
 286               out_last_access_time);            /* last access time */
 287         SBVAL(outbody.data, 0x18,
 288               out_last_write_time);             /* last write time */
 289         SBVAL(outbody.data, 0x20,
 290               out_change_time);                 /* change time */
 291         SBVAL(outbody.data, 0x28,
 292               out_allocation_size);             /* allocation size */
 293         SBVAL(outbody.data, 0x30,
 294               out_end_of_file);                 /* end of file */
 295         SIVAL(outbody.data, 0x38,
 296               out_file_attributes);             /* file attributes */
 297         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 298         SBVAL(outbody.data, 0x40, 0);           /* file id (persistent) */
 299         SBVAL(outbody.data, 0x48,
 300               out_file_id_volatile);            /* file id (volatile) */
 301         SIVAL(outbody.data, 0x50,
 302               out_context_buffer_offset);       /* create contexts offset */
 303         SIVAL(outbody.data, 0x54,
 304               out_context_buffer.length);       /* create contexts length */
 305
 306         outdyn = out_context_buffer;
 307
 308         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 309         if (!NT_STATUS_IS_OK(error)) {
 310                 smbd_server_connection_terminate(smb2req->sconn,
 311                                                  nt_errstr(error));
 312                 return;
 313         }
 314 }
 315
 316 struct smbd_smb2_create_state {
 317         struct smbd_smb2_request *smb2req;
 318         struct smb_request *smb1req;
 319         struct timed_event *te;
 320         struct timeval request_time;
 321         DATA_BLOB private_data;
 322         uint8_t out_oplock_level;
 323         uint32_t out_create_action;
 324         NTTIME out_creation_time;
 325         NTTIME out_last_access_time;
 326         NTTIME out_last_write_time;
 327         NTTIME out_change_time;
 328         uint64_t out_allocation_size;
 329         uint64_t out_end_of_file;
 330         uint32_t out_file_attributes;
 331         uint64_t out_file_id_volatile;
 332         struct smb2_create_blobs out_context_blobs;
 333 };
 334
 335 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 336                         struct tevent_context *ev,
 337                         struct smbd_smb2_request *smb2req,
 338                         uint8_t in_oplock_level,
 339                         uint32_t in_impersonation_level,
 340                         uint32_t in_desired_access,
 341                         uint32_t in_file_attributes,
 342                         uint32_t in_share_access,
 343                         uint32_t in_create_disposition,
 344                         uint32_t in_create_options,
 345                         const char *in_name,
 346                         struct smb2_create_blobs in_context_blobs)
 347 {
 348         struct tevent_req *req = NULL;
 349         struct smbd_smb2_create_state *state = NULL;
 350         NTSTATUS status;
 351         struct smb_request *smb1req = NULL;
 352         files_struct *result = NULL;
 353         int info;
 354         struct timespec write_time_ts;
 355         struct smb2_create_blobs out_context_blobs;
 356
 357         ZERO_STRUCT(out_context_blobs);
 358
 359         if (!smb2req->async) {
 360                 /* New create call. */
 361                 req = tevent_req_create(mem_ctx, &state,
 362                                 struct smbd_smb2_create_state);
 363                 if (req == NULL) {
 364                         return NULL;
 365                 }
 366                 state->smb2req = smb2req;
 367                 smb2req->subreq = req; /* So we can find this when going async. */
 368
 369                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 370                 if (tevent_req_nomem(smb1req, req)) {
 371                         return tevent_req_post(req, ev);
 372                 }
 373                 state->smb1req = smb1req;
 374                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 375                         in_name));
 376         } else {
 377                 /* Re-entrant create call. */
 378                 req = smb2req->subreq;
 379                 state = tevent_req_data(req,
 380                                 struct smbd_smb2_create_state);
 381                 smb1req = state->smb1req;
 382                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 383                         in_name ));
 384         }
 385
 386         if (IS_IPC(smb1req->conn)) {
 387                 const char *pipe_name = in_name;
 388
 389                 if (!lp_nt_pipe_support()) {
 390                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 391                         return tevent_req_post(req, ev);
 392                 }
 393
 394                 /* Strip \\ off the name. */
 395                 if (pipe_name[0] == '\\') {
 396                         pipe_name++;
 397                 }
 398
 399                 status = open_np_file(smb1req, pipe_name, &result);
 400                 if (!NT_STATUS_IS_OK(status)) {
 401                         tevent_req_nterror(req, status);
 402                         return tevent_req_post(req, ev);
 403                 }
 404                 info = FILE_WAS_OPENED;
 405         } else if (CAN_PRINT(smb1req->conn)) {
 406                 status = file_new(smb1req, smb1req->conn, &result);
 407                 if(!NT_STATUS_IS_OK(status)) {
 408                         tevent_req_nterror(req, status);
 409                         return tevent_req_post(req, ev);
 410                 }
 411
 412                 status = print_fsp_open(smb1req,
 413                                         smb1req->conn,
 414                                         in_name,
 415                                         smb1req->vuid,
 416                                         result);
 417                 if (!NT_STATUS_IS_OK(status)) {
 418                         file_free(smb1req, result);
 419                         tevent_req_nterror(req, status);
 420                         return tevent_req_post(req, ev);
 421                 }
 422                 info = FILE_WAS_CREATED;
 423         } else {
 424                 char *fname;
 425                 struct smb_filename *smb_fname = NULL;
 426                 struct smb2_create_blob *exta = NULL;
 427                 struct ea_list *ea_list = NULL;
 428                 struct smb2_create_blob *mxac = NULL;
 429                 NTTIME max_access_time = 0;
 430                 struct smb2_create_blob *secd = NULL;
 431                 struct security_descriptor *sec_desc = NULL;
 432                 struct smb2_create_blob *dhnq = NULL;
 433                 struct smb2_create_blob *dhnc = NULL;
 434                 struct smb2_create_blob *alsi = NULL;
 435                 uint64_t allocation_size = 0;
 436                 struct smb2_create_blob *twrp = NULL;
 437                 struct smb2_create_blob *qfid = NULL;
 438
 439                 exta = smb2_create_blob_find(&in_context_blobs,
 440                                              SMB2_CREATE_TAG_EXTA);
 441                 mxac = smb2_create_blob_find(&in_context_blobs,
 442                                              SMB2_CREATE_TAG_MXAC);
 443                 secd = smb2_create_blob_find(&in_context_blobs,
 444                                              SMB2_CREATE_TAG_SECD);
 445                 dhnq = smb2_create_blob_find(&in_context_blobs,
 446                                              SMB2_CREATE_TAG_DHNQ);
 447                 dhnc = smb2_create_blob_find(&in_context_blobs,
 448                                              SMB2_CREATE_TAG_DHNC);
 449                 alsi = smb2_create_blob_find(&in_context_blobs,
 450                                              SMB2_CREATE_TAG_ALSI);
 451                 twrp = smb2_create_blob_find(&in_context_blobs,
 452                                              SMB2_CREATE_TAG_TWRP);
 453                 qfid = smb2_create_blob_find(&in_context_blobs,
 454                                              SMB2_CREATE_TAG_QFID);
 455
 456                 fname = talloc_strdup(state, in_name);
 457                 if (tevent_req_nomem(fname, req)) {
 458                         return tevent_req_post(req, ev);
 459                 }
 460
 461                 if (exta) {
 462                         if (dhnc) {
 463                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 464                                 return tevent_req_post(req, ev);
 465                         }
 466
 467                         ea_list = read_nttrans_ea_list(mem_ctx,
 468                                 (const char *)exta->data.data, exta->data.length);
 469                         if (!ea_list) {
 470                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 471                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 472                                 return tevent_req_post(req, ev);
 473                         }
 474                 }
 475
 476                 if (mxac) {
 477                         if (dhnc) {
 478                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 479                                 return tevent_req_post(req, ev);
 480                         }
 481
 482                         if (mxac->data.length == 0) {
 483                                 max_access_time = 0;
 484                         } else if (mxac->data.length == 8) {
 485                                 max_access_time = BVAL(mxac->data.data, 0);
 486                         } else {
 487                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 488                                 return tevent_req_post(req, ev);
 489                         }
 490                 }
 491
 492                 if (secd) {
 493                         enum ndr_err_code ndr_err;
 494
 495                         if (dhnc) {
 496                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 497                                 return tevent_req_post(req, ev);
 498                         }
 499
 500                         sec_desc = talloc_zero(state, struct security_descriptor);
 501                         if (tevent_req_nomem(sec_desc, req)) {
 502                                 return tevent_req_post(req, ev);
 503                         }
 504
 505                         ndr_err = ndr_pull_struct_blob(&secd->data,
 506                                 sec_desc, NULL, sec_desc,
 507                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 508                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 509                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 510                                          ndr_errstr(ndr_err)));
 511                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 512                                 return tevent_req_post(req, ev);
 513                         }
 514                 }
 515
 516                 if (dhnq) {
 517                         if (dhnc) {
 518                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 519                                 return tevent_req_post(req, ev);
 520                         }
 521
 522                         if (dhnq->data.length != 16) {
 523                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 524                                 return tevent_req_post(req, ev);
 525                         }
 526                         /*
 527                          * we don't support durable handles yet
 528                          * and have to ignore this
 529                          */
 530                 }
 531
 532                 if (dhnc) {
 533                         if (dhnc->data.length != 16) {
 534                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 535                                 return tevent_req_post(req, ev);
 536                         }
 537                         /* we don't support durable handles yet */
 538                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 539                         return tevent_req_post(req, ev);
 540                 }
 541
 542                 if (alsi) {
 543                         if (dhnc) {
 544                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 545                                 return tevent_req_post(req, ev);
 546                         }
 547
 548                         if (alsi->data.length != 8) {
 549                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 550                                 return tevent_req_post(req, ev);
 551                         }
 552                         allocation_size = BVAL(alsi->data.data, 0);
 553                 }
 554
 555                 if (twrp) {
 556                         NTTIME nttime;
 557                         time_t t;
 558                         struct tm *tm;
 559
 560                         if (dhnc) {
 561                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 562                                 return tevent_req_post(req, ev);
 563                         }
 564
 565                         if (twrp->data.length != 8) {
 566                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 567                                 return tevent_req_post(req, ev);
 568                         }
 569
 570                         nttime = BVAL(twrp->data.data, 0);
 571                         t = nt_time_to_unix(nttime);
 572                         tm = gmtime(&t);
 573
 574                         TALLOC_FREE(fname);
 575                         fname = talloc_asprintf(state,
 576                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 577                                         tm->tm_year + 1900,
 578                                         tm->tm_mon + 1,
 579                                         tm->tm_mday,
 580                                         tm->tm_hour,
 581                                         tm->tm_min,
 582                                         tm->tm_sec,
 583                                         in_name);
 584                         if (tevent_req_nomem(fname, req)) {
 585                                 return tevent_req_post(req, ev);
 586                         }
 587                 }
 588
 589                 if (qfid) {
 590                         if (qfid->data.length != 0) {
 591                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 592                                 return tevent_req_post(req, ev);
 593                         }
 594                 }
 595
 596                 /* these are ignored for SMB2 */
 597                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 598                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 599
 600                 /* convert '\\' into '/' */
 601                 status = check_path_syntax(fname);
 602                 if (!NT_STATUS_IS_OK(status)) {
 603                         tevent_req_nterror(req, status);
 604                         return tevent_req_post(req, ev);
 605                 }
 606
 607                 status = filename_convert(req,
 608                                           smb1req->conn,
 609                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 610                                           fname,
 611                                           0,
 612                                           NULL,
 613                                           &smb_fname);
 614                 if (!NT_STATUS_IS_OK(status)) {
 615                         tevent_req_nterror(req, status);
 616                         return tevent_req_post(req, ev);
 617                 }
 618
 619                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 620                                              smb1req,
 621                                              0, /* root_dir_fid */
 622                                              smb_fname,
 623                                              in_desired_access,
 624                                              in_share_access,
 625                                              in_create_disposition,
 626                                              in_create_options,
 627                                              in_file_attributes,
 628                                              0, /* oplock_request */
 629                                              allocation_size,
 630                                              0, /* private_flags */
 631                                              sec_desc,
 632                                              ea_list,
 633                                              &result,
 634                                              &info);
 635                 if (!NT_STATUS_IS_OK(status)) {
 636                         if (open_was_deferred(smb1req->mid)) {
 637                                 return req;
 638                         }
 639                         tevent_req_nterror(req, status);
 640                         return tevent_req_post(req, ev);
 641                 }
 642
 643                 if (mxac) {
 644                         NTTIME last_write_time;
 645
 646                         unix_timespec_to_nt_time(&last_write_time,
 647                                                  result->fsp_name->st.st_ex_mtime);
 648                         if (last_write_time != max_access_time) {
 649                                 uint8_t p[8];
 650                                 uint32_t max_access_granted;
 651                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 652
 653                                 status = smbd_check_open_rights(smb1req->conn,
 654                                                         result->fsp_name,
 655                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 656                                                         &max_access_granted);
 657
 658                                 SIVAL(p, 0, NT_STATUS_V(status));
 659                                 SIVAL(p, 4, max_access_granted);
 660
 661                                 status = smb2_create_blob_add(state,
 662                                                         &out_context_blobs,
 663                                                         SMB2_CREATE_TAG_MXAC,
 664                                                         blob);
 665                                 if (!NT_STATUS_IS_OK(status)) {
 666                                         tevent_req_nterror(req, status);
 667                                         return tevent_req_post(req, ev);
 668                                 }
 669                         }
 670                 }
 671
 672                 if (qfid) {
 673                         uint8_t p[32];
 674                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 675
 676                         ZERO_STRUCT(p);
 677
 678                         /* TODO: maybe use result->file_id */
 679                         SIVAL(p, 0, result->fsp_name->st.st_ex_ino);/* FileIndexLow */
 680                         SIVAL(p, 4, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 681
 682                         status = smb2_create_blob_add(state, &out_context_blobs,
 683                                                       SMB2_CREATE_TAG_QFID,
 684                                                       blob);
 685                         if (!NT_STATUS_IS_OK(status)) {
 686                                 tevent_req_nterror(req, status);
 687                                 return tevent_req_post(req, ev);
 688                         }
 689                 }
 690         }
 691
 692         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 693
 694         state->out_oplock_level = 0;
 695         if ((in_create_disposition == FILE_SUPERSEDE)
 696             && (info == FILE_WAS_OVERWRITTEN)) {
 697                 state->out_create_action = FILE_WAS_SUPERSEDED;
 698         } else {
 699                 state->out_create_action = info;
 700         }
 701         state->out_file_attributes = dos_mode(result->conn,
 702                                            result->fsp_name);
 703         /* Deal with other possible opens having a modified
 704            write time. JRA. */
 705         ZERO_STRUCT(write_time_ts);
 706         get_file_infos(result->file_id, NULL, &write_time_ts);
 707         if (!null_timespec(write_time_ts)) {
 708                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 709         }
 710
 711         unix_timespec_to_nt_time(&state->out_creation_time,
 712                         get_create_timespec(smb1req->conn, result,
 713                                         result->fsp_name));
 714         unix_timespec_to_nt_time(&state->out_last_access_time,
 715                         result->fsp_name->st.st_ex_atime);
 716         unix_timespec_to_nt_time(&state->out_last_write_time,
 717                         result->fsp_name->st.st_ex_mtime);
 718         unix_timespec_to_nt_time(&state->out_change_time,
 719                         get_change_timespec(smb1req->conn, result,
 720                                         result->fsp_name));
 721         state->out_allocation_size =
 722                         result->fsp_name->st.st_ex_blksize *
 723                         result->fsp_name->st.st_ex_blocks;
 724         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 725         if (state->out_file_attributes == 0) {
 726                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 727         }
 728         state->out_file_id_volatile = result->fnum;
 729         state->out_context_blobs = out_context_blobs;
 730
 731         tevent_req_done(req);
 732         return tevent_req_post(req, ev);
 733 }
 734
 735 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 736                         TALLOC_CTX *mem_ctx,
 737                         uint8_t *out_oplock_level,
 738                         uint32_t *out_create_action,
 739                         NTTIME *out_creation_time,
 740                         NTTIME *out_last_access_time,
 741                         NTTIME *out_last_write_time,
 742                         NTTIME *out_change_time,
 743                         uint64_t *out_allocation_size,
 744                         uint64_t *out_end_of_file,
 745                         uint32_t *out_file_attributes,
 746                         uint64_t *out_file_id_volatile,
 747                         struct smb2_create_blobs *out_context_blobs)
 748 {
 749         NTSTATUS status;
 750         struct smbd_smb2_create_state *state = tevent_req_data(req,
 751                                                struct smbd_smb2_create_state);
 752
 753         if (tevent_req_is_nterror(req, &status)) {
 754                 tevent_req_received(req);
 755                 return status;
 756         }
 757
 758         *out_oplock_level       = state->out_oplock_level;
 759         *out_create_action      = state->out_create_action;
 760         *out_creation_time      = state->out_creation_time;
 761         *out_last_access_time   = state->out_last_access_time;
 762         *out_last_write_time    = state->out_last_write_time;
 763         *out_change_time        = state->out_change_time;
 764         *out_allocation_size    = state->out_allocation_size;
 765         *out_end_of_file        = state->out_end_of_file;
 766         *out_file_attributes    = state->out_file_attributes;
 767         *out_file_id_volatile   = state->out_file_id_volatile;
 768         *out_context_blobs      = state->out_context_blobs;
 769
 770         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 771
 772         tevent_req_received(req);
 773         return NT_STATUS_OK;
 774 }
 775
 776 /*********************************************************
 777  Code for dealing with deferred opens.
 778 *********************************************************/
 779
 780 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 781                         struct timeval *p_request_time,
 782                         void **pp_state)
 783 {
 784         struct smbd_smb2_create_state *state = NULL;
 785         struct tevent_req *req = NULL;
 786
 787         if (!smb2req) {
 788                 return false;
 789         }
 790         if (!smb2req->async) {
 791                 return false;
 792         }
 793         req = smb2req->subreq;
 794         if (!req) {
 795                 return false;
 796         }
 797         state = tevent_req_data(req, struct smbd_smb2_create_state);
 798         if (!state) {
 799                 return false;
 800         }
 801         if (p_request_time) {
 802                 *p_request_time = state->request_time;
 803         }
 804         if (pp_state) {
 805                 *pp_state = (void *)state->private_data.data;
 806         }
 807         return true;
 808 }
 809
 810 /*********************************************************
 811  Re-process this call early - requested by message or
 812  close.
 813 *********************************************************/
 814
 815 static struct smbd_smb2_request *find_open_smb2req(uint64_t mid)
 816 {
 817         struct smbd_server_connection *sconn = smbd_server_conn;
 818         struct smbd_smb2_request *smb2req;
 819
 820         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 821                 uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 822                 uint64_t message_id = BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 823                 if (message_id == mid) {
 824                         return smb2req;
 825                 }
 826         }
 827         return NULL;
 828 }
 829
 830 bool open_was_deferred_smb2(uint64_t mid)
 831 {
 832         struct smbd_smb2_create_state *state = NULL;
 833         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 834
 835         if (!smb2req) {
 836                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 837                         (unsigned long long)mid));
 838                 return false;
 839         }
 840         if (!smb2req->subreq) {
 841                 return false;
 842         }
 843         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 844                 return false;
 845         }
 846         state = tevent_req_data(smb2req->subreq,
 847                         struct smbd_smb2_create_state);
 848         if (!state) {
 849                 return false;
 850         }
 851         /* It's not in progress if there's no timeout event. */
 852         if (!state->te) {
 853                 return false;
 854         }
 855
 856         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 857                         (unsigned long long)mid));
 858
 859         return true;
 860 }
 861
 862 void remove_deferred_open_message_smb2(uint64_t mid)
 863 {
 864         struct smbd_smb2_create_state *state = NULL;
 865         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 866
 867         if (!smb2req) {
 868                 DEBUG(10,("remove_deferred_open_message_smb2: "
 869                         "can't find mid %llu\n",
 870                         (unsigned long long)mid ));
 871                 return;
 872         }
 873         if (!smb2req->subreq) {
 874                 return;
 875         }
 876         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 877                 return;
 878         }
 879         state = tevent_req_data(smb2req->subreq,
 880                         struct smbd_smb2_create_state);
 881         if (!state) {
 882                 return;
 883         }
 884
 885         DEBUG(10,("remove_deferred_open_message_smb2: "
 886                 "mid %llu\n",
 887                 (unsigned long long)mid ));
 888
 889         /* Ensure we don't have any outstanding timer event. */
 890         TALLOC_FREE(state->te);
 891 }
 892
 893 void schedule_deferred_open_message_smb2(uint64_t mid)
 894 {
 895         struct tevent_immediate *im = NULL;
 896         struct smbd_smb2_create_state *state = NULL;
 897         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 898
 899         if (!smb2req) {
 900                 DEBUG(10,("schedule_deferred_open_message_smb2: "
 901                         "can't find mid %llu\n",
 902                         (unsigned long long)mid ));
 903                 return;
 904         }
 905         if (!smb2req->subreq) {
 906                 return;
 907         }
 908         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 909                 return;
 910         }
 911         state = tevent_req_data(smb2req->subreq,
 912                         struct smbd_smb2_create_state);
 913         if (!state) {
 914                 return;
 915         }
 916         /* Ensure we don't have any outstanding timer event. */
 917         TALLOC_FREE(state->te);
 918
 919         im = tevent_create_immediate(smb2req);
 920         if (!im) {
 921                 smbd_server_connection_terminate(smb2req->sconn,
 922                         nt_errstr(NT_STATUS_NO_MEMORY));
 923         }
 924
 925         DEBUG(10,("schedule_deferred_open_message_smb2: "
 926                 "re-processing mid %llu\n",
 927                 (unsigned long long)mid ));
 928
 929         tevent_schedule_immediate(im,
 930                         smb2req->sconn->smb2.event_ctx,
 931                         smbd_smb2_request_dispatch_immediate,
 932                         smb2req);
 933 }
 934
 935 /*********************************************************
 936  Re-process this call.
 937 *********************************************************/
 938
 939 static void smb2_deferred_open_timer(struct event_context *ev,
 940                                         struct timed_event *te,
 941                                         struct timeval _tval,
 942                                         void *private_data)
 943 {
 944         NTSTATUS status;
 945         struct smbd_smb2_create_state *state = NULL;
 946         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
 947                                                 struct smbd_smb2_request);
 948
 949         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
 950                 smb2req->current_idx,
 951                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
 952
 953         state = tevent_req_data(smb2req->subreq,
 954                         struct smbd_smb2_create_state);
 955         if (!state) {
 956                 return;
 957         }
 958         /*
 959          * Null this out, don't talloc_free. It will
 960          * be talloc_free'd by the tevent library when
 961          * this returns.
 962          */
 963         state->te = NULL;
 964
 965         /*
 966          * This is subtle. We must null out the callback
 967          * before resheduling, else the first call to
 968          * tevent_req_nterror() causes the _receive()
 969          * function to be called, this causing tevent_req_post()
 970          * to crash.
 971          */
 972         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
 973
 974         status = smbd_smb2_request_dispatch(smb2req);
 975
 976         if (!NT_STATUS_IS_OK(status)) {
 977                 smbd_server_connection_terminate(smb2req->sconn,
 978                                 nt_errstr(status));
 979         }
 980 }
 981
 982 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
 983                                 struct timeval request_time,
 984                                 struct timeval timeout,
 985                                 char *private_data,
 986                                 size_t priv_len)
 987 {
 988         struct tevent_req *req = NULL;
 989         struct smbd_smb2_create_state *state = NULL;
 990         struct timeval end_time;
 991
 992         if (!smb2req) {
 993                 return false;
 994         }
 995         req = smb2req->subreq;
 996         if (!req) {
 997                 return false;
 998         }
 999         state = tevent_req_data(req, struct smbd_smb2_create_state);
1000         if (!state) {
1001                 return false;
1002         }
1003         state->request_time = request_time;
1004         state->private_data = data_blob_talloc(state, private_data,
1005                                                 priv_len);
1006         if (!state->private_data.data) {
1007                 return false;
1008         }
1009 #if 0
1010         /* Boo - turns out this isn't what W2K8R2
1011            does. It actually sends the STATUS_PENDING
1012            message followed by the STATUS_SHARING_VIOLATION
1013            message. Surely this means that all open
1014            calls (even on directories) will potentially
1015            fail in a chain.... ? And I've seen directory
1016            opens as the start of a chain. JRA.
1017         */
1018         /*
1019          * More subtlety. To match W2K8R2 don't
1020          * send a "gone async" message if it's simply
1021          * a STATUS_SHARING_VIOLATION (short) wait, not
1022          * an oplock break wait. We do this by prematurely
1023          * setting smb2req->async flag.
1024          */
1025         if (timeout.tv_sec < 2) {
1026                 DEBUG(10,("push_deferred_open_message_smb2: "
1027                         "short timer wait (usec = %u). "
1028                         "Don't send async message.\n",
1029                         (unsigned int)timeout.tv_usec ));
1030                 smb2req->async = true;
1031         }
1032 #endif
1033
1034         /* Re-schedule us to retry on timer expiry. */
1035         end_time = timeval_sum(&request_time, &timeout);
1036
1037         DEBUG(10,("push_deferred_open_message_smb2: "
1038                 "timeout at %s\n",
1039                 timeval_string(talloc_tos(),
1040                                 &end_time,
1041                                 true) ));
1042
1043         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1044                                 state,
1045                                 end_time,
1046                                 smb2_deferred_open_timer,
1047                                 smb2req);
1048         if (!state->te) {
1049                 return false;
1050         }
1051         return true;
1052 }