source/smb_server/smb/nttrans.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NT transaction handling
   4    Copyright (C) Andrew Tridgell 2003
   5    Copyright (C) James J Myers 2003 <myersjj@samba.org>
   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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21 /*
  22    This file handles the parsing of transact2 requests
  23 */
  24
  25 #include "includes.h"
  26 #include "smb_server/smb_server.h"
  27 #include "ntvfs/ntvfs.h"
  28 #include "libcli/raw/libcliraw.h"
  29 #include "librpc/gen_ndr/ndr_security.h"
  30
  31 /*
  32   hold the state of a nttrans op while in progress. Needed to allow for async backend
  33   functions.
  34 */
  35 struct nttrans_op {
  36         struct smb_nttrans *trans;
  37         NTSTATUS (*send_fn)(struct nttrans_op *);
  38         void *op_info;
  39 };
  40
  41
  42 /* setup a nttrans reply, given the data and params sizes */
  43 static NTSTATUS nttrans_setup_reply(struct nttrans_op *op,
  44                                     struct smb_nttrans *trans,
  45                                     uint16_t param_size, uint16_t data_size,
  46                                     uint16_t setup_count)
  47 {
  48         trans->out.setup_count = setup_count;
  49         if (setup_count != 0) {
  50                 trans->out.setup = talloc_zero_array(op, uint16_t, setup_count);
  51                 NT_STATUS_HAVE_NO_MEMORY(trans->out.setup);
  52         }
  53         trans->out.params = data_blob_talloc(op, NULL, param_size);
  54         if (param_size != 0) {
  55                 NT_STATUS_HAVE_NO_MEMORY(trans->out.params.data);
  56         }
  57         trans->out.data = data_blob_talloc(op, NULL, data_size);
  58         if (data_size != 0) {
  59                 NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data);
  60         }
  61         return NT_STATUS_OK;
  62 }
  63
  64 /*
  65   send a nttrans create reply
  66 */
  67 static NTSTATUS nttrans_create_send(struct nttrans_op *op)
  68 {
  69         union smb_open *io = talloc_get_type(op->op_info, union smb_open);
  70         uint8_t *params;
  71
  72         op->trans->out.setup_count = 0;
  73         op->trans->out.setup       = NULL;
  74         op->trans->out.params      = data_blob_talloc(op, NULL, 69);
  75         op->trans->out.data        = data_blob(NULL, 0);
  76
  77         params = op->trans->out.params.data;
  78         NT_STATUS_HAVE_NO_MEMORY(params);
  79
  80         SSVAL(params,        0, io->ntcreatex.out.oplock_level);
  81         SSVAL(params,        2, io->ntcreatex.out.file.fnum);
  82         SIVAL(params,        4, io->ntcreatex.out.create_action);
  83         SIVAL(params,        8, 0); /* ea error offset */
  84         push_nttime(params, 12, io->ntcreatex.out.create_time);
  85         push_nttime(params, 20, io->ntcreatex.out.access_time);
  86         push_nttime(params, 28, io->ntcreatex.out.write_time);
  87         push_nttime(params, 36, io->ntcreatex.out.change_time);
  88         SIVAL(params,       44, io->ntcreatex.out.attrib);
  89         SBVAL(params,       48, io->ntcreatex.out.alloc_size);
  90         SBVAL(params,       56, io->ntcreatex.out.size);
  91         SSVAL(params,       64, io->ntcreatex.out.file_type);
  92         SSVAL(params,       66, io->ntcreatex.out.ipc_state);
  93         SCVAL(params,       68, io->ntcreatex.out.is_directory);
  94
  95         return NT_STATUS_OK;
  96 }
  97
  98 /*
  99    parse NTTRANS_CREATE request
 100  */
 101 static NTSTATUS nttrans_create(struct smbsrv_request *req,
 102                                struct nttrans_op *op)
 103 {
 104         struct smb_nttrans *trans = op->trans;
 105         union smb_open *io;
 106         uint16_t fname_len;
 107         uint32_t sd_length, ea_length;
 108         NTSTATUS status;
 109         uint8_t *params;
 110
 111         if (trans->in.params.length < 54) {
 112                 return NT_STATUS_INVALID_PARAMETER;
 113         }
 114
 115         /* parse the request */
 116         io = talloc(op, union smb_open);
 117         NT_STATUS_HAVE_NO_MEMORY(io);
 118
 119         io->ntcreatex.level = RAW_OPEN_NTTRANS_CREATE;
 120
 121         params = trans->in.params.data;
 122
 123         io->ntcreatex.in.flags            = IVAL(params,  0);
 124         io->ntcreatex.in.root_fid         = IVAL(params,  4);
 125         io->ntcreatex.in.access_mask      = IVAL(params,  8);
 126         io->ntcreatex.in.alloc_size       = BVAL(params, 12);
 127         io->ntcreatex.in.file_attr        = IVAL(params, 20);
 128         io->ntcreatex.in.share_access     = IVAL(params, 24);
 129         io->ntcreatex.in.open_disposition = IVAL(params, 28);
 130         io->ntcreatex.in.create_options   = IVAL(params, 32);
 131         sd_length                         = IVAL(params, 36);
 132         ea_length                         = IVAL(params, 40);
 133         fname_len                         = IVAL(params, 44);
 134         io->ntcreatex.in.impersonation    = IVAL(params, 48);
 135         io->ntcreatex.in.security_flags   = CVAL(params, 52);
 136         io->ntcreatex.in.sec_desc         = NULL;
 137         io->ntcreatex.in.ea_list          = NULL;
 138
 139         req_pull_string(req, &io->ntcreatex.in.fname,
 140                         params + 53,
 141                         MIN(fname_len+1, trans->in.params.length - 53),
 142                         STR_NO_RANGE_CHECK | STR_TERMINATE);
 143         if (!io->ntcreatex.in.fname) {
 144                 return NT_STATUS_INVALID_PARAMETER;
 145         }
 146
 147         if (sd_length > trans->in.data.length ||
 148             ea_length > trans->in.data.length ||
 149             (sd_length+ea_length) > trans->in.data.length) {
 150                 return NT_STATUS_INVALID_PARAMETER;
 151         }
 152
 153         /* this call has an optional security descriptor */
 154         if (sd_length != 0) {
 155                 DATA_BLOB blob;
 156                 blob.data = trans->in.data.data;
 157                 blob.length = sd_length;
 158                 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
 159                 if (io->ntcreatex.in.sec_desc == NULL) {
 160                         return NT_STATUS_NO_MEMORY;
 161                 }
 162                 status = ndr_pull_struct_blob(&blob, io,
 163                                               io->ntcreatex.in.sec_desc,
 164                                               (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 165                 if (!NT_STATUS_IS_OK(status)) {
 166                         return status;
 167                 }
 168         }
 169
 170         /* and an optional ea_list */
 171         if (ea_length > 4) {
 172                 DATA_BLOB blob;
 173                 blob.data = trans->in.data.data + sd_length;
 174                 blob.length = ea_length;
 175                 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
 176                 if (io->ntcreatex.in.ea_list == NULL) {
 177                         return NT_STATUS_NO_MEMORY;
 178                 }
 179
 180                 status = ea_pull_list_chained(&blob, io,
 181                                               &io->ntcreatex.in.ea_list->num_eas,
 182                                               &io->ntcreatex.in.ea_list->eas);
 183                 if (!NT_STATUS_IS_OK(status)) {
 184                         return status;
 185                 }
 186         }
 187
 188         op->send_fn = nttrans_create_send;
 189         op->op_info = io;
 190
 191         return ntvfs_open(req->ntvfs, io);
 192 }
 193
 194
 195 /*
 196    send NTTRANS_QUERY_SEC_DESC reply
 197  */
 198 static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
 199 {
 200         struct smb_nttrans *trans = op->trans;
 201         union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
 202         NTSTATUS status;
 203
 204         trans->out.setup_count = 0;
 205         trans->out.setup       = NULL;
 206         trans->out.params      = data_blob_talloc(op, NULL, 4);
 207         trans->out.data        = data_blob(NULL, 0);
 208         NT_STATUS_HAVE_NO_MEMORY(trans->out.params.data);
 209
 210         status = ndr_push_struct_blob(&trans->out.data, op,
 211                                       io->query_secdesc.out.sd,
 212                                       (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 213         NT_STATUS_NOT_OK_RETURN(status);
 214
 215         SIVAL(trans->out.params.data, 0, trans->out.data.length);
 216
 217         return NT_STATUS_OK;
 218 }
 219
 220 /*
 221    parse NTTRANS_QUERY_SEC_DESC request
 222  */
 223 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
 224                                        struct nttrans_op *op)
 225 {
 226         struct smb_nttrans *trans = op->trans;
 227         union smb_fileinfo *io;
 228
 229         if (trans->in.params.length < 8) {
 230                 return NT_STATUS_INVALID_PARAMETER;
 231         }
 232
 233         /* parse the request */
 234         io = talloc(op, union smb_fileinfo);
 235         NT_STATUS_HAVE_NO_MEMORY(io);
 236
 237         io->query_secdesc.level            = RAW_FILEINFO_SEC_DESC;
 238         io->query_secdesc.in.file.fnum     = SVAL(trans->in.params.data, 0);
 239         io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 240
 241         op->op_info = io;
 242         op->send_fn = nttrans_query_sec_desc_send;
 243
 244         return ntvfs_qfileinfo(req->ntvfs, io);
 245 }
 246
 247
 248 /*
 249    parse NTTRANS_SET_SEC_DESC request
 250  */
 251 static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
 252                                      struct nttrans_op *op)
 253 {
 254         struct smb_nttrans *trans = op->trans;
 255         union smb_setfileinfo *io;
 256         NTSTATUS status;
 257
 258         if (trans->in.params.length < 8) {
 259                 return NT_STATUS_INVALID_PARAMETER;
 260         }
 261
 262         /* parse the request */
 263         io = talloc(req, union smb_setfileinfo);
 264         NT_STATUS_HAVE_NO_MEMORY(io);
 265
 266         io->set_secdesc.level            = RAW_SFILEINFO_SEC_DESC;
 267         io->set_secdesc.in.file.fnum     = SVAL(trans->in.params.data, 0);
 268         io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 269
 270         io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
 271         NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
 272
 273         status = ndr_pull_struct_blob(&trans->in.data, req,
 274                                       io->set_secdesc.in.sd,
 275                                       (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 276         NT_STATUS_NOT_OK_RETURN(status);
 277
 278         trans->out.setup_count = 0;
 279         trans->out.setup       = NULL;
 280         trans->out.params      = data_blob(NULL, 0);
 281         trans->out.data        = data_blob(NULL, 0);
 282
 283         return ntvfs_setfileinfo(req->ntvfs, io);
 284 }
 285
 286
 287 /* parse NTTRANS_RENAME request
 288  */
 289 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
 290                                struct nttrans_op *op)
 291 {
 292         return NT_STATUS_NOT_IMPLEMENTED;
 293 }
 294
 295 /*
 296    parse NTTRANS_IOCTL request
 297  */
 298 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
 299                               struct nttrans_op *op)
 300 {
 301         struct smb_nttrans *trans = op->trans;
 302         union smb_ioctl *nt;
 303         uint32_t function;
 304         uint16_t fnum;
 305         uint8_t filter;
 306         BOOL fsctl;
 307         NTSTATUS status;
 308
 309         /* should have at least 4 setup words */
 310         if (trans->in.setup_count != 4) {
 311                 return NT_STATUS_INVALID_PARAMETER;
 312         }
 313
 314         nt = talloc(op, union smb_ioctl);
 315         NT_STATUS_HAVE_NO_MEMORY(nt);
 316
 317         function  = IVAL(trans->in.setup, 0);
 318         fnum  = SVAL(trans->in.setup, 4);
 319         fsctl = CVAL(trans->in.setup, 6);
 320         filter = CVAL(trans->in.setup, 7);
 321
 322         nt->ntioctl.level = RAW_IOCTL_NTIOCTL;
 323         nt->ntioctl.in.file.fnum = fnum;
 324         nt->ntioctl.in.function = function;
 325         nt->ntioctl.in.fsctl = fsctl;
 326         nt->ntioctl.in.filter = filter;
 327         nt->ntioctl.in.max_data = trans->in.max_data;
 328         nt->ntioctl.in.blob = trans->in.data;
 329
 330         status = nttrans_setup_reply(op, trans, 0, 0, 1);
 331         NT_STATUS_NOT_OK_RETURN(status);
 332
 333         trans->out.setup[0] = 0;
 334
 335         return ntvfs_ioctl(req->ntvfs, nt);
 336 }
 337
 338
 339 /*
 340    send NTTRANS_NOTIFY_CHANGE reply
 341  */
 342 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
 343 {
 344         struct smb_notify *info = talloc_get_type(op->op_info, struct smb_notify);
 345         size_t size = 0;
 346         int i;
 347         NTSTATUS status;
 348         uint8_t *p;
 349 #define MAX_BYTES_PER_CHAR 3
 350
 351         /* work out how big the reply buffer could be */
 352         for (i=0;i<info->out.num_changes;i++) {
 353                 size += 12 + 3 + (1+strlen(info->out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
 354         }
 355
 356         status = nttrans_setup_reply(op, op->trans, size, 0, 0);
 357         NT_STATUS_NOT_OK_RETURN(status);
 358
 359         p = op->trans->out.params.data;
 360
 361         /* construct the changes buffer */
 362         for (i=0;i<info->out.num_changes;i++) {
 363                 uint32_t ofs;
 364                 ssize_t len;
 365
 366                 SIVAL(p, 4, info->out.changes[i].action);
 367                 len = push_string(p + 12, info->out.changes[i].name.s,
 368                                   op->trans->out.params.length -
 369                                   (p+12 - op->trans->out.params.data), STR_UNICODE);
 370                 SIVAL(p, 8, len);
 371
 372                 ofs = len + 12;
 373
 374                 if (ofs & 3) {
 375                         int pad = 4 - (ofs & 3);
 376                         memset(p+ofs, 0, pad);
 377                         ofs += pad;
 378                 }
 379
 380                 if (i == info->out.num_changes-1) {
 381                         SIVAL(p, 0, 0);
 382                 } else {
 383                         SIVAL(p, 0, ofs);
 384                 }
 385
 386                 p += ofs;
 387         }
 388
 389         op->trans->out.params.length = p - op->trans->out.params.data;
 390
 391         return NT_STATUS_OK;
 392 }
 393
 394 /*
 395    parse NTTRANS_NOTIFY_CHANGE request
 396  */
 397 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
 398                                       struct nttrans_op *op)
 399 {
 400         struct smb_nttrans *trans = op->trans;
 401         struct smb_notify *info;
 402
 403         /* should have at least 4 setup words */
 404         if (trans->in.setup_count != 4) {
 405                 return NT_STATUS_INVALID_PARAMETER;
 406         }
 407
 408         info = talloc(op, struct smb_notify);
 409         NT_STATUS_HAVE_NO_MEMORY(info);
 410
 411         info->in.completion_filter = IVAL(trans->in.setup, 0);
 412         info->in.file.fnum         = SVAL(trans->in.setup, 4);
 413         info->in.recursive         = SVAL(trans->in.setup, 6);
 414         info->in.buffer_size       = trans->in.max_param;
 415
 416         op->op_info = info;
 417         op->send_fn = nttrans_notify_change_send;
 418
 419         return ntvfs_notify(req->ntvfs, info);
 420 }
 421
 422 /*
 423   backend for nttrans requests
 424 */
 425 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
 426                                 struct nttrans_op *op)
 427 {
 428         /* the nttrans command is in function */
 429         switch (op->trans->in.function) {
 430         case NT_TRANSACT_CREATE:
 431                 return nttrans_create(req, op);
 432         case NT_TRANSACT_IOCTL:
 433                 return nttrans_ioctl(req, op);
 434         case NT_TRANSACT_RENAME:
 435                 return nttrans_rename(req, op);
 436         case NT_TRANSACT_QUERY_SECURITY_DESC:
 437                 return nttrans_query_sec_desc(req, op);
 438         case NT_TRANSACT_SET_SECURITY_DESC:
 439                 return nttrans_set_sec_desc(req, op);
 440         case NT_TRANSACT_NOTIFY_CHANGE:
 441                 return nttrans_notify_change(req, op);
 442         }
 443
 444         /* an unknown nttrans command */
 445         return NT_STATUS_DOS(ERRSRV, ERRerror);
 446 }
 447
 448
 449 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
 450 {
 451         struct smbsrv_request *req;
 452         uint16_t params_left, data_left;
 453         uint8_t *params, *data;
 454         struct smb_nttrans *trans;
 455         struct nttrans_op *op;
 456
 457         SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
 458
 459         trans = op->trans;
 460
 461         /* if this function needs work to form the nttrans reply buffer, then
 462            call that now */
 463         if (op->send_fn != NULL) {
 464                 NTSTATUS status;
 465                 status = op->send_fn(op);
 466                 if (!NT_STATUS_IS_OK(status)) {
 467                         smbsrv_send_error(req, status);
 468                         return;
 469                 }
 470         }
 471
 472         smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
 473
 474         /* note that we don't check the max_setup count (matching w2k3
 475            behaviour) */
 476
 477         if (trans->out.params.length > trans->in.max_param) {
 478                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 479                 trans->out.params.length = trans->in.max_param;
 480         }
 481         if (trans->out.data.length > trans->in.max_data) {
 482                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 483                 trans->out.data.length = trans->in.max_data;
 484         }
 485
 486         params_left = trans->out.params.length;
 487         data_left   = trans->out.data.length;
 488         params      = trans->out.params.data;
 489         data        = trans->out.data.data;
 490
 491         /* we need to divide up the reply into chunks that fit into
 492            the negotiated buffer size */
 493         do {
 494                 uint16_t this_data, this_param, max_bytes;
 495                 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
 496                 struct smbsrv_request *this_req;
 497                 int i;
 498
 499                 max_bytes = req_max_data(req) - (align1 + align2);
 500
 501                 this_param = params_left;
 502                 if (this_param > max_bytes) {
 503                         this_param = max_bytes;
 504                 }
 505                 max_bytes -= this_param;
 506
 507                 this_data = data_left;
 508                 if (this_data > max_bytes) {
 509                         this_data = max_bytes;
 510                 }
 511
 512                 /* don't destroy unless this is the last chunk */
 513                 if (params_left - this_param != 0 ||
 514                     data_left - this_data != 0) {
 515                         this_req = smbsrv_setup_secondary_request(req);
 516                 } else {
 517                         this_req = req;
 518                 }
 519
 520                 req_grow_data(req, this_param + this_data + (align1 + align2));
 521
 522                 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
 523                 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
 524                 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
 525                 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
 526
 527                 SIVAL(this_req->out.vwv, 11, this_param);
 528                 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
 529                 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
 530
 531                 SIVAL(this_req->out.vwv, 23, this_data);
 532                 SIVAL(this_req->out.vwv, 27, align1 + align2 +
 533                       PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
 534                 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
 535
 536                 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
 537                 for (i=0;i<trans->out.setup_count;i++) {
 538                         SSVAL(this_req->out.vwv, VWV(18+i), trans->out.setup[i]);
 539                 }
 540
 541                 memset(this_req->out.data, 0, align1);
 542                 if (this_param != 0) {
 543                         memcpy(this_req->out.data + align1, params, this_param);
 544                 }
 545                 memset(this_req->out.data+this_param+align1, 0, align2);
 546                 if (this_data != 0) {
 547                         memcpy(this_req->out.data+this_param+align1+align2,
 548                                data, this_data);
 549                 }
 550
 551                 params_left -= this_param;
 552                 data_left -= this_data;
 553                 params += this_param;
 554                 data += this_data;
 555
 556                 smbsrv_send_reply(this_req);
 557         } while (params_left != 0 || data_left != 0);
 558 }
 559
 560
 561 /****************************************************************************
 562  Reply to an SMBnttrans request
 563 ****************************************************************************/
 564 void smbsrv_reply_nttrans(struct smbsrv_request *req)
 565 {
 566         struct nttrans_op *op;
 567         struct smb_nttrans *trans;
 568         int i;
 569         uint16_t param_ofs, data_ofs;
 570         uint16_t param_count, data_count;
 571         uint16_t param_total, data_total;
 572
 573         /* parse request */
 574         if (req->in.wct < 19) {
 575                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 576                 return;
 577         }
 578
 579         SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
 580         SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
 581
 582         trans = talloc(op, struct smb_nttrans);
 583         if (trans == NULL) {
 584                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 585                 return;
 586         }
 587
 588         op->trans = trans;
 589         op->op_info = NULL;
 590         op->send_fn = NULL;
 591
 592         trans->in.max_setup   = CVAL(req->in.vwv, 0);
 593         param_total          = IVAL(req->in.vwv, 3);
 594         data_total           = IVAL(req->in.vwv, 7);
 595         trans->in.max_param   = IVAL(req->in.vwv, 11);
 596         trans->in.max_data    = IVAL(req->in.vwv, 15);
 597         param_count          = IVAL(req->in.vwv, 19);
 598         param_ofs            = IVAL(req->in.vwv, 23);
 599         data_count           = IVAL(req->in.vwv, 27);
 600         data_ofs             = IVAL(req->in.vwv, 31);
 601         trans->in.setup_count = CVAL(req->in.vwv, 35);
 602         trans->in.function       = SVAL(req->in.vwv, 36);
 603
 604         if (req->in.wct != 19 + trans->in.setup_count) {
 605                 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
 606                 return;
 607         }
 608
 609         /* parse out the setup words */
 610         trans->in.setup = talloc_array(req, uint16_t, trans->in.setup_count);
 611         if (!trans->in.setup) {
 612                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 613                 return;
 614         }
 615         for (i=0;i<trans->in.setup_count;i++) {
 616                 trans->in.setup[i] = SVAL(req->in.vwv, VWV(19+i));
 617         }
 618
 619         if (!req_pull_blob(req, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
 620             !req_pull_blob(req, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
 621                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 622                 return;
 623         }
 624
 625         /* is it a partial request? if so, then send a 'send more' message */
 626         if (param_total > param_count ||
 627             data_total > data_count) {
 628                 DEBUG(0,("REWRITE: not handling partial nttrans requests!\n"));
 629                 return;
 630         }
 631
 632         SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
 633 }
 634
 635
 636 /****************************************************************************
 637  Reply to an SMBnttranss request
 638 ****************************************************************************/
 639 void smbsrv_reply_nttranss(struct smbsrv_request *req)
 640 {
 641         smbsrv_send_error(req, NT_STATUS_FOOBAR);
 642 }