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 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    This file handles the parsing of transact2 requests
  22 */
  23
  24 #include "includes.h"
  25 #include "smb_server/smb_server.h"
  26 #include "ntvfs/ntvfs.h"
  27 #include "libcli/raw/libcliraw.h"
  28 #include "librpc/gen_ndr/ndr_security.h"
  29
  30 /*
  31   hold the state of a nttrans op while in progress. Needed to allow for async backend
  32   functions.
  33 */
  34 struct nttrans_op {
  35         struct smb_nttrans *trans;
  36         NTSTATUS (*send_fn)(struct nttrans_op *);
  37         void *op_info;
  38 };
  39
  40
  41 /* setup a nttrans reply, given the data and params sizes */
  42 static NTSTATUS nttrans_setup_reply(struct nttrans_op *op,
  43                                     struct smb_nttrans *trans,
  44                                     uint32_t param_size, uint32_t data_size,
  45                                     uint8_t setup_count)
  46 {
  47         trans->out.setup_count = setup_count;
  48         if (setup_count != 0) {
  49                 trans->out.setup = talloc_zero_array(op, uint8_t, setup_count*2);
  50                 NT_STATUS_HAVE_NO_MEMORY(trans->out.setup);
  51         }
  52         trans->out.params = data_blob_talloc(op, NULL, param_size);
  53         if (param_size != 0) {
  54                 NT_STATUS_HAVE_NO_MEMORY(trans->out.params.data);
  55         }
  56         trans->out.data = data_blob_talloc(op, NULL, data_size);
  57         if (data_size != 0) {
  58                 NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data);
  59         }
  60         return NT_STATUS_OK;
  61 }
  62
  63 /*
  64   send a nttrans create reply
  65 */
  66 static NTSTATUS nttrans_create_send(struct nttrans_op *op)
  67 {
  68         union smb_open *io = talloc_get_type(op->op_info, union smb_open);
  69         uint8_t *params;
  70         NTSTATUS status;
  71
  72         status = nttrans_setup_reply(op, op->trans, 69, 0, 0);
  73         NT_STATUS_NOT_OK_RETURN(status);
  74         params = op->trans->out.params.data;
  75
  76         SSVAL(params,        0, io->ntcreatex.out.oplock_level);
  77         smbsrv_push_fnum(params, 2, io->ntcreatex.out.file.ntvfs);
  78         SIVAL(params,        4, io->ntcreatex.out.create_action);
  79         SIVAL(params,        8, 0); /* ea error offset */
  80         push_nttime(params, 12, io->ntcreatex.out.create_time);
  81         push_nttime(params, 20, io->ntcreatex.out.access_time);
  82         push_nttime(params, 28, io->ntcreatex.out.write_time);
  83         push_nttime(params, 36, io->ntcreatex.out.change_time);
  84         SIVAL(params,       44, io->ntcreatex.out.attrib);
  85         SBVAL(params,       48, io->ntcreatex.out.alloc_size);
  86         SBVAL(params,       56, io->ntcreatex.out.size);
  87         SSVAL(params,       64, io->ntcreatex.out.file_type);
  88         SSVAL(params,       66, io->ntcreatex.out.ipc_state);
  89         SCVAL(params,       68, io->ntcreatex.out.is_directory);
  90
  91         return NT_STATUS_OK;
  92 }
  93
  94 /*
  95    parse NTTRANS_CREATE request
  96  */
  97 static NTSTATUS nttrans_create(struct smbsrv_request *req,
  98                                struct nttrans_op *op)
  99 {
 100         struct smb_nttrans *trans = op->trans;
 101         union smb_open *io;
 102         uint16_t fname_len;
 103         uint32_t sd_length, ea_length;
 104         NTSTATUS status;
 105         uint8_t *params;
 106
 107         if (trans->in.params.length < 54) {
 108                 return NT_STATUS_INVALID_PARAMETER;
 109         }
 110
 111         /* parse the request */
 112         io = talloc(op, union smb_open);
 113         NT_STATUS_HAVE_NO_MEMORY(io);
 114
 115         io->ntcreatex.level = RAW_OPEN_NTTRANS_CREATE;
 116
 117         params = trans->in.params.data;
 118
 119         io->ntcreatex.in.flags            = IVAL(params,  0);
 120         io->ntcreatex.in.root_fid         = IVAL(params,  4);
 121         io->ntcreatex.in.access_mask      = IVAL(params,  8);
 122         io->ntcreatex.in.alloc_size       = BVAL(params, 12);
 123         io->ntcreatex.in.file_attr        = IVAL(params, 20);
 124         io->ntcreatex.in.share_access     = IVAL(params, 24);
 125         io->ntcreatex.in.open_disposition = IVAL(params, 28);
 126         io->ntcreatex.in.create_options   = IVAL(params, 32);
 127         sd_length                         = IVAL(params, 36);
 128         ea_length                         = IVAL(params, 40);
 129         fname_len                         = IVAL(params, 44);
 130         io->ntcreatex.in.impersonation    = IVAL(params, 48);
 131         io->ntcreatex.in.security_flags   = CVAL(params, 52);
 132         io->ntcreatex.in.sec_desc         = NULL;
 133         io->ntcreatex.in.ea_list          = NULL;
 134
 135         req_pull_string(req, &io->ntcreatex.in.fname,
 136                         params + 53,
 137                         MIN(fname_len+1, trans->in.params.length - 53),
 138                         STR_NO_RANGE_CHECK | STR_TERMINATE);
 139         if (!io->ntcreatex.in.fname) {
 140                 return NT_STATUS_INVALID_PARAMETER;
 141         }
 142
 143         if (sd_length > trans->in.data.length ||
 144             ea_length > trans->in.data.length ||
 145             (sd_length+ea_length) > trans->in.data.length) {
 146                 return NT_STATUS_INVALID_PARAMETER;
 147         }
 148
 149         /* this call has an optional security descriptor */
 150         if (sd_length != 0) {
 151                 DATA_BLOB blob;
 152                 blob.data = trans->in.data.data;
 153                 blob.length = sd_length;
 154                 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
 155                 if (io->ntcreatex.in.sec_desc == NULL) {
 156                         return NT_STATUS_NO_MEMORY;
 157                 }
 158                 status = ndr_pull_struct_blob(&blob, io,
 159                                               io->ntcreatex.in.sec_desc,
 160                                               (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 161                 if (!NT_STATUS_IS_OK(status)) {
 162                         return status;
 163                 }
 164         }
 165
 166         /* and an optional ea_list */
 167         if (ea_length > 4) {
 168                 DATA_BLOB blob;
 169                 blob.data = trans->in.data.data + sd_length;
 170                 blob.length = ea_length;
 171                 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
 172                 if (io->ntcreatex.in.ea_list == NULL) {
 173                         return NT_STATUS_NO_MEMORY;
 174                 }
 175
 176                 status = ea_pull_list_chained(&blob, io,
 177                                               &io->ntcreatex.in.ea_list->num_eas,
 178                                               &io->ntcreatex.in.ea_list->eas);
 179                 if (!NT_STATUS_IS_OK(status)) {
 180                         return status;
 181                 }
 182         }
 183
 184         op->send_fn = nttrans_create_send;
 185         op->op_info = io;
 186
 187         return ntvfs_open(req->ntvfs, io);
 188 }
 189
 190
 191 /*
 192    send NTTRANS_QUERY_SEC_DESC reply
 193  */
 194 static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
 195 {
 196         union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
 197         uint8_t *params;
 198         NTSTATUS status;
 199
 200         status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
 201         NT_STATUS_NOT_OK_RETURN(status);
 202         params = op->trans->out.params.data;
 203
 204         status = ndr_push_struct_blob(&op->trans->out.data, op,
 205                                       io->query_secdesc.out.sd,
 206                                       (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 207         NT_STATUS_NOT_OK_RETURN(status);
 208
 209         SIVAL(params, 0, op->trans->out.data.length);
 210
 211         return NT_STATUS_OK;
 212 }
 213
 214 /*
 215    parse NTTRANS_QUERY_SEC_DESC request
 216  */
 217 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
 218                                        struct nttrans_op *op)
 219 {
 220         struct smb_nttrans *trans = op->trans;
 221         union smb_fileinfo *io;
 222
 223         if (trans->in.params.length < 8) {
 224                 return NT_STATUS_INVALID_PARAMETER;
 225         }
 226
 227         /* parse the request */
 228         io = talloc(op, union smb_fileinfo);
 229         NT_STATUS_HAVE_NO_MEMORY(io);
 230
 231         io->query_secdesc.level            = RAW_FILEINFO_SEC_DESC;
 232         io->query_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 233         io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 234
 235         op->op_info = io;
 236         op->send_fn = nttrans_query_sec_desc_send;
 237
 238         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
 239         return ntvfs_qfileinfo(req->ntvfs, io);
 240 }
 241
 242
 243 /*
 244    parse NTTRANS_SET_SEC_DESC request
 245  */
 246 static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
 247                                      struct nttrans_op *op)
 248 {
 249         struct smb_nttrans *trans = op->trans;
 250         union smb_setfileinfo *io;
 251         NTSTATUS status;
 252
 253         if (trans->in.params.length < 8) {
 254                 return NT_STATUS_INVALID_PARAMETER;
 255         }
 256
 257         /* parse the request */
 258         io = talloc(req, union smb_setfileinfo);
 259         NT_STATUS_HAVE_NO_MEMORY(io);
 260
 261         io->set_secdesc.level            = RAW_SFILEINFO_SEC_DESC;
 262         io->set_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 263         io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 264
 265         io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
 266         NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
 267
 268         status = ndr_pull_struct_blob(&trans->in.data, req,
 269                                       io->set_secdesc.in.sd,
 270                                       (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 271         NT_STATUS_NOT_OK_RETURN(status);
 272
 273         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
 274         return ntvfs_setfileinfo(req->ntvfs, io);
 275 }
 276
 277
 278 /* parse NTTRANS_RENAME request
 279  */
 280 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
 281                                struct nttrans_op *op)
 282 {
 283         return NT_STATUS_NOT_IMPLEMENTED;
 284 }
 285
 286 /*
 287    parse NTTRANS_IOCTL send
 288  */
 289 static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
 290 {
 291         union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
 292         NTSTATUS status;
 293
 294         /*
 295          * we pass 0 as data_count here,
 296          * because we reuse the DATA_BLOB from the smb_ioctl
 297          * struct
 298          */
 299         status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
 300         NT_STATUS_NOT_OK_RETURN(status);
 301
 302         op->trans->out.setup[0]         = 0;
 303         op->trans->out.data             = info->ntioctl.out.blob;
 304
 305         return NT_STATUS_OK;
 306 }
 307
 308
 309 /*
 310    parse NTTRANS_IOCTL request
 311  */
 312 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
 313                               struct nttrans_op *op)
 314 {
 315         struct smb_nttrans *trans = op->trans;
 316         union smb_ioctl *nt;
 317
 318         /* should have at least 4 setup words */
 319         if (trans->in.setup_count != 4) {
 320                 return NT_STATUS_INVALID_PARAMETER;
 321         }
 322
 323         nt = talloc(op, union smb_ioctl);
 324         NT_STATUS_HAVE_NO_MEMORY(nt);
 325
 326         nt->ntioctl.level               = RAW_IOCTL_NTIOCTL;
 327         nt->ntioctl.in.function         = IVAL(trans->in.setup, 0);
 328         nt->ntioctl.in.file.ntvfs       = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 329         nt->ntioctl.in.fsctl            = CVAL(trans->in.setup, 6);
 330         nt->ntioctl.in.filter           = CVAL(trans->in.setup, 7);
 331         nt->ntioctl.in.max_data         = trans->in.max_data;
 332         nt->ntioctl.in.blob             = trans->in.data;
 333
 334         op->op_info = nt;
 335         op->send_fn = nttrans_ioctl_send;
 336
 337         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
 338         return ntvfs_ioctl(req->ntvfs, nt);
 339 }
 340
 341
 342 /*
 343    send NTTRANS_NOTIFY_CHANGE reply
 344  */
 345 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
 346 {
 347         union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
 348         size_t size = 0;
 349         int i;
 350         NTSTATUS status;
 351         uint8_t *p;
 352 #define MAX_BYTES_PER_CHAR 3
 353
 354         /* work out how big the reply buffer could be */
 355         for (i=0;i<info->nttrans.out.num_changes;i++) {
 356                 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
 357         }
 358
 359         status = nttrans_setup_reply(op, op->trans, size, 0, 0);
 360         NT_STATUS_NOT_OK_RETURN(status);
 361         p = op->trans->out.params.data;
 362
 363         /* construct the changes buffer */
 364         for (i=0;i<info->nttrans.out.num_changes;i++) {
 365                 uint32_t ofs;
 366                 ssize_t len;
 367
 368                 SIVAL(p, 4, info->nttrans.out.changes[i].action);
 369                 len = push_string(p + 12, info->nttrans.out.changes[i].name.s,
 370                                   op->trans->out.params.length -
 371                                   (p+12 - op->trans->out.params.data), STR_UNICODE);
 372                 SIVAL(p, 8, len);
 373
 374                 ofs = len + 12;
 375
 376                 if (ofs & 3) {
 377                         int pad = 4 - (ofs & 3);
 378                         memset(p+ofs, 0, pad);
 379                         ofs += pad;
 380                 }
 381
 382                 if (i == info->nttrans.out.num_changes-1) {
 383                         SIVAL(p, 0, 0);
 384                 } else {
 385                         SIVAL(p, 0, ofs);
 386                 }
 387
 388                 p += ofs;
 389         }
 390
 391         op->trans->out.params.length = p - op->trans->out.params.data;
 392
 393         return NT_STATUS_OK;
 394 }
 395
 396 /*
 397    parse NTTRANS_NOTIFY_CHANGE request
 398  */
 399 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
 400                                       struct nttrans_op *op)
 401 {
 402         struct smb_nttrans *trans = op->trans;
 403         union smb_notify *info;
 404
 405         /* should have at least 4 setup words */
 406         if (trans->in.setup_count != 4) {
 407                 return NT_STATUS_INVALID_PARAMETER;
 408         }
 409
 410         info = talloc(op, union smb_notify);
 411         NT_STATUS_HAVE_NO_MEMORY(info);
 412
 413         info->nttrans.level                     = RAW_NOTIFY_NTTRANS;
 414         info->nttrans.in.completion_filter      = IVAL(trans->in.setup, 0);
 415         info->nttrans.in.file.ntvfs             = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 416         info->nttrans.in.recursive              = SVAL(trans->in.setup, 6);
 417         info->nttrans.in.buffer_size            = trans->in.max_param;
 418
 419         op->op_info = info;
 420         op->send_fn = nttrans_notify_change_send;
 421
 422         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
 423         return ntvfs_notify(req->ntvfs, info);
 424 }
 425
 426 /*
 427   backend for nttrans requests
 428 */
 429 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
 430                                 struct nttrans_op *op)
 431 {
 432         /* the nttrans command is in function */
 433         switch (op->trans->in.function) {
 434         case NT_TRANSACT_CREATE:
 435                 return nttrans_create(req, op);
 436         case NT_TRANSACT_IOCTL:
 437                 return nttrans_ioctl(req, op);
 438         case NT_TRANSACT_RENAME:
 439                 return nttrans_rename(req, op);
 440         case NT_TRANSACT_QUERY_SECURITY_DESC:
 441                 return nttrans_query_sec_desc(req, op);
 442         case NT_TRANSACT_SET_SECURITY_DESC:
 443                 return nttrans_set_sec_desc(req, op);
 444         case NT_TRANSACT_NOTIFY_CHANGE:
 445                 return nttrans_notify_change(req, op);
 446         }
 447
 448         /* an unknown nttrans command */
 449         return NT_STATUS_DOS(ERRSRV, ERRerror);
 450 }
 451
 452
 453 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
 454 {
 455         struct smbsrv_request *req;
 456         uint16_t params_left, data_left;
 457         uint8_t *params, *data;
 458         struct smb_nttrans *trans;
 459         struct nttrans_op *op;
 460
 461         SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
 462
 463         trans = op->trans;
 464
 465         /* if this function needs work to form the nttrans reply buffer, then
 466            call that now */
 467         if (op->send_fn != NULL) {
 468                 NTSTATUS status;
 469                 status = op->send_fn(op);
 470                 if (!NT_STATUS_IS_OK(status)) {
 471                         smbsrv_send_error(req, status);
 472                         return;
 473                 }
 474         }
 475
 476         smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
 477
 478         /* note that we don't check the max_setup count (matching w2k3
 479            behaviour) */
 480
 481         if (trans->out.params.length > trans->in.max_param) {
 482                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 483                 trans->out.params.length = trans->in.max_param;
 484         }
 485         if (trans->out.data.length > trans->in.max_data) {
 486                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 487                 trans->out.data.length = trans->in.max_data;
 488         }
 489
 490         params_left = trans->out.params.length;
 491         data_left   = trans->out.data.length;
 492         params      = trans->out.params.data;
 493         data        = trans->out.data.data;
 494
 495         /* we need to divide up the reply into chunks that fit into
 496            the negotiated buffer size */
 497         do {
 498                 uint16_t this_data, this_param, max_bytes;
 499                 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
 500                 struct smbsrv_request *this_req;
 501
 502                 max_bytes = req_max_data(req) - (align1 + align2);
 503
 504                 this_param = params_left;
 505                 if (this_param > max_bytes) {
 506                         this_param = max_bytes;
 507                 }
 508                 max_bytes -= this_param;
 509
 510                 this_data = data_left;
 511                 if (this_data > max_bytes) {
 512                         this_data = max_bytes;
 513                 }
 514
 515                 /* don't destroy unless this is the last chunk */
 516                 if (params_left - this_param != 0 ||
 517                     data_left - this_data != 0) {
 518                         this_req = smbsrv_setup_secondary_request(req);
 519                 } else {
 520                         this_req = req;
 521                 }
 522
 523                 req_grow_data(req, this_param + this_data + (align1 + align2));
 524
 525                 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
 526                 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
 527                 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
 528                 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
 529
 530                 SIVAL(this_req->out.vwv, 11, this_param);
 531                 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
 532                 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
 533
 534                 SIVAL(this_req->out.vwv, 23, this_data);
 535                 SIVAL(this_req->out.vwv, 27, align1 + align2 +
 536                       PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
 537                 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
 538
 539                 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
 540                 memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup,
 541                        sizeof(uint16_t) * trans->out.setup_count);
 542                 memset(this_req->out.data, 0, align1);
 543                 if (this_param != 0) {
 544                         memcpy(this_req->out.data + align1, params, this_param);
 545                 }
 546                 memset(this_req->out.data+this_param+align1, 0, align2);
 547                 if (this_data != 0) {
 548                         memcpy(this_req->out.data+this_param+align1+align2,
 549                                data, this_data);
 550                 }
 551
 552                 params_left -= this_param;
 553                 data_left -= this_data;
 554                 params += this_param;
 555                 data += this_data;
 556
 557                 smbsrv_send_reply(this_req);
 558         } while (params_left != 0 || data_left != 0);
 559 }
 560
 561
 562 /****************************************************************************
 563  Reply to an SMBnttrans request
 564 ****************************************************************************/
 565 void smbsrv_reply_nttrans(struct smbsrv_request *req)
 566 {
 567         struct nttrans_op *op;
 568         struct smb_nttrans *trans;
 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, uint8_t, trans->in.setup_count*2);
 611         if (!trans->in.setup) {
 612                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 613                 return;
 614         }
 615         memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19),
 616                sizeof(uint16_t) * trans->in.setup_count);
 617
 618         if (!req_pull_blob(req, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
 619             !req_pull_blob(req, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
 620                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 621                 return;
 622         }
 623
 624         /* is it a partial request? if so, then send a 'send more' message */
 625         if (param_total > param_count ||
 626             data_total > data_count) {
 627                 DEBUG(0,("REWRITE: not handling partial nttrans requests!\n"));
 628                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 629                 return;
 630         }
 631
 632         ZERO_STRUCT(trans->out);
 633         SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
 634 }
 635
 636
 637 /****************************************************************************
 638  Reply to an SMBnttranss request
 639 ****************************************************************************/
 640 void smbsrv_reply_nttranss(struct smbsrv_request *req)
 641 {
 642         smbsrv_send_error(req, NT_STATUS_FOOBAR);
 643 }