source4/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                                     uint32_t param_size, uint32_t data_size,
  46                                     uint8_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         NTSTATUS status;
  72
  73         status = nttrans_setup_reply(op, op->trans, 69, 0, 0);
  74         NT_STATUS_NOT_OK_RETURN(status);
  75         params = op->trans->out.params.data;
  76
  77         SSVAL(params,        0, io->ntcreatex.out.oplock_level);
  78         smbsrv_push_fnum(params, 2, io->ntcreatex.out.file.ntvfs);
  79         SIVAL(params,        4, io->ntcreatex.out.create_action);
  80         SIVAL(params,        8, 0); /* ea error offset */
  81         push_nttime(params, 12, io->ntcreatex.out.create_time);
  82         push_nttime(params, 20, io->ntcreatex.out.access_time);
  83         push_nttime(params, 28, io->ntcreatex.out.write_time);
  84         push_nttime(params, 36, io->ntcreatex.out.change_time);
  85         SIVAL(params,       44, io->ntcreatex.out.attrib);
  86         SBVAL(params,       48, io->ntcreatex.out.alloc_size);
  87         SBVAL(params,       56, io->ntcreatex.out.size);
  88         SSVAL(params,       64, io->ntcreatex.out.file_type);
  89         SSVAL(params,       66, io->ntcreatex.out.ipc_state);
  90         SCVAL(params,       68, io->ntcreatex.out.is_directory);
  91
  92         return NT_STATUS_OK;
  93 }
  94
  95 /*
  96    parse NTTRANS_CREATE request
  97  */
  98 static NTSTATUS nttrans_create(struct smbsrv_request *req,
  99                                struct nttrans_op *op)
 100 {
 101         struct smb_nttrans *trans = op->trans;
 102         union smb_open *io;
 103         uint16_t fname_len;
 104         uint32_t sd_length, ea_length;
 105         NTSTATUS status;
 106         uint8_t *params;
 107
 108         if (trans->in.params.length < 54) {
 109                 return NT_STATUS_INVALID_PARAMETER;
 110         }
 111
 112         /* parse the request */
 113         io = talloc(op, union smb_open);
 114         NT_STATUS_HAVE_NO_MEMORY(io);
 115
 116         io->ntcreatex.level = RAW_OPEN_NTTRANS_CREATE;
 117
 118         params = trans->in.params.data;
 119
 120         io->ntcreatex.in.flags            = IVAL(params,  0);
 121         io->ntcreatex.in.root_fid         = IVAL(params,  4);
 122         io->ntcreatex.in.access_mask      = IVAL(params,  8);
 123         io->ntcreatex.in.alloc_size       = BVAL(params, 12);
 124         io->ntcreatex.in.file_attr        = IVAL(params, 20);
 125         io->ntcreatex.in.share_access     = IVAL(params, 24);
 126         io->ntcreatex.in.open_disposition = IVAL(params, 28);
 127         io->ntcreatex.in.create_options   = IVAL(params, 32);
 128         sd_length                         = IVAL(params, 36);
 129         ea_length                         = IVAL(params, 40);
 130         fname_len                         = IVAL(params, 44);
 131         io->ntcreatex.in.impersonation    = IVAL(params, 48);
 132         io->ntcreatex.in.security_flags   = CVAL(params, 52);
 133         io->ntcreatex.in.sec_desc         = NULL;
 134         io->ntcreatex.in.ea_list          = NULL;
 135
 136         req_pull_string(req, &io->ntcreatex.in.fname,
 137                         params + 53,
 138                         MIN(fname_len+1, trans->in.params.length - 53),
 139                         STR_NO_RANGE_CHECK | STR_TERMINATE);
 140         if (!io->ntcreatex.in.fname) {
 141                 return NT_STATUS_INVALID_PARAMETER;
 142         }
 143
 144         if (sd_length > trans->in.data.length ||
 145             ea_length > trans->in.data.length ||
 146             (sd_length+ea_length) > trans->in.data.length) {
 147                 return NT_STATUS_INVALID_PARAMETER;
 148         }
 149
 150         /* this call has an optional security descriptor */
 151         if (sd_length != 0) {
 152                 DATA_BLOB blob;
 153                 blob.data = trans->in.data.data;
 154                 blob.length = sd_length;
 155                 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
 156                 if (io->ntcreatex.in.sec_desc == NULL) {
 157                         return NT_STATUS_NO_MEMORY;
 158                 }
 159                 status = ndr_pull_struct_blob(&blob, io,
 160                                               io->ntcreatex.in.sec_desc,
 161                                               (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 162                 if (!NT_STATUS_IS_OK(status)) {
 163                         return status;
 164                 }
 165         }
 166
 167         /* and an optional ea_list */
 168         if (ea_length > 4) {
 169                 DATA_BLOB blob;
 170                 blob.data = trans->in.data.data + sd_length;
 171                 blob.length = ea_length;
 172                 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
 173                 if (io->ntcreatex.in.ea_list == NULL) {
 174                         return NT_STATUS_NO_MEMORY;
 175                 }
 176
 177                 status = ea_pull_list_chained(&blob, io,
 178                                               &io->ntcreatex.in.ea_list->num_eas,
 179                                               &io->ntcreatex.in.ea_list->eas);
 180                 if (!NT_STATUS_IS_OK(status)) {
 181                         return status;
 182                 }
 183         }
 184
 185         op->send_fn = nttrans_create_send;
 186         op->op_info = io;
 187
 188         return ntvfs_open(req->ntvfs, io);
 189 }
 190
 191
 192 /*
 193    send NTTRANS_QUERY_SEC_DESC reply
 194  */
 195 static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
 196 {
 197         union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
 198         uint8_t *params;
 199         NTSTATUS status;
 200
 201         status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
 202         NT_STATUS_NOT_OK_RETURN(status);
 203         params = op->trans->out.params.data;
 204
 205         status = ndr_push_struct_blob(&op->trans->out.data, op,
 206                                       io->query_secdesc.out.sd,
 207                                       (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 208         NT_STATUS_NOT_OK_RETURN(status);
 209
 210         SIVAL(params, 0, op->trans->out.data.length);
 211
 212         return NT_STATUS_OK;
 213 }
 214
 215 /*
 216    parse NTTRANS_QUERY_SEC_DESC request
 217  */
 218 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
 219                                        struct nttrans_op *op)
 220 {
 221         struct smb_nttrans *trans = op->trans;
 222         union smb_fileinfo *io;
 223
 224         if (trans->in.params.length < 8) {
 225                 return NT_STATUS_INVALID_PARAMETER;
 226         }
 227
 228         /* parse the request */
 229         io = talloc(op, union smb_fileinfo);
 230         NT_STATUS_HAVE_NO_MEMORY(io);
 231
 232         io->query_secdesc.level            = RAW_FILEINFO_SEC_DESC;
 233         io->query_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 234         io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 235
 236         op->op_info = io;
 237         op->send_fn = nttrans_query_sec_desc_send;
 238
 239         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
 240         return ntvfs_qfileinfo(req->ntvfs, io);
 241 }
 242
 243
 244 /*
 245    parse NTTRANS_SET_SEC_DESC request
 246  */
 247 static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
 248                                      struct nttrans_op *op)
 249 {
 250         struct smb_nttrans *trans = op->trans;
 251         union smb_setfileinfo *io;
 252         NTSTATUS status;
 253
 254         if (trans->in.params.length < 8) {
 255                 return NT_STATUS_INVALID_PARAMETER;
 256         }
 257
 258         /* parse the request */
 259         io = talloc(req, union smb_setfileinfo);
 260         NT_STATUS_HAVE_NO_MEMORY(io);
 261
 262         io->set_secdesc.level            = RAW_SFILEINFO_SEC_DESC;
 263         io->set_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 264         io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 265
 266         io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
 267         NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
 268
 269         status = ndr_pull_struct_blob(&trans->in.data, req,
 270                                       io->set_secdesc.in.sd,
 271                                       (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 272         NT_STATUS_NOT_OK_RETURN(status);
 273
 274         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
 275         return ntvfs_setfileinfo(req->ntvfs, io);
 276 }
 277
 278
 279 /* parse NTTRANS_RENAME request
 280  */
 281 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
 282                                struct nttrans_op *op)
 283 {
 284         return NT_STATUS_NOT_IMPLEMENTED;
 285 }
 286
 287 /*
 288    parse NTTRANS_IOCTL send
 289  */
 290 static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
 291 {
 292         union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
 293         NTSTATUS status;
 294
 295         /*
 296          * we pass 0 as data_count here,
 297          * because we reuse the DATA_BLOB from the smb_ioctl
 298          * struct
 299          */
 300         status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
 301         NT_STATUS_NOT_OK_RETURN(status);
 302
 303         op->trans->out.setup[0]         = 0;
 304         op->trans->out.data             = info->ntioctl.out.blob;
 305
 306         return NT_STATUS_OK;
 307 }
 308
 309
 310 /*
 311    parse NTTRANS_IOCTL request
 312  */
 313 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
 314                               struct nttrans_op *op)
 315 {
 316         struct smb_nttrans *trans = op->trans;
 317         union smb_ioctl *nt;
 318
 319         /* should have at least 4 setup words */
 320         if (trans->in.setup_count != 4) {
 321                 return NT_STATUS_INVALID_PARAMETER;
 322         }
 323
 324         nt = talloc(op, union smb_ioctl);
 325         NT_STATUS_HAVE_NO_MEMORY(nt);
 326
 327         nt->ntioctl.level               = RAW_IOCTL_NTIOCTL;
 328         nt->ntioctl.in.function         = IVAL(trans->in.setup, 0);
 329         nt->ntioctl.in.file.ntvfs       = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 330         nt->ntioctl.in.fsctl            = CVAL(trans->in.setup, 6);
 331         nt->ntioctl.in.filter           = CVAL(trans->in.setup, 7);
 332         nt->ntioctl.in.max_data         = trans->in.max_data;
 333         nt->ntioctl.in.blob             = trans->in.data;
 334
 335         op->op_info = nt;
 336         op->send_fn = nttrans_ioctl_send;
 337
 338         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
 339         return ntvfs_ioctl(req->ntvfs, nt);
 340 }
 341
 342
 343 /*
 344    send NTTRANS_NOTIFY_CHANGE reply
 345  */
 346 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
 347 {
 348         union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
 349         size_t size = 0;
 350         int i;
 351         NTSTATUS status;
 352         uint8_t *p;
 353 #define MAX_BYTES_PER_CHAR 3
 354
 355         /* work out how big the reply buffer could be */
 356         for (i=0;i<info->nttrans.out.num_changes;i++) {
 357                 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
 358         }
 359
 360         status = nttrans_setup_reply(op, op->trans, size, 0, 0);
 361         NT_STATUS_NOT_OK_RETURN(status);
 362         p = op->trans->out.params.data;
 363
 364         /* construct the changes buffer */
 365         for (i=0;i<info->nttrans.out.num_changes;i++) {
 366                 uint32_t ofs;
 367                 ssize_t len;
 368
 369                 SIVAL(p, 4, info->nttrans.out.changes[i].action);
 370                 len = push_string(p + 12, info->nttrans.out.changes[i].name.s,
 371                                   op->trans->out.params.length -
 372                                   (p+12 - op->trans->out.params.data), STR_UNICODE);
 373                 SIVAL(p, 8, len);
 374
 375                 ofs = len + 12;
 376
 377                 if (ofs & 3) {
 378                         int pad = 4 - (ofs & 3);
 379                         memset(p+ofs, 0, pad);
 380                         ofs += pad;
 381                 }
 382
 383                 if (i == info->nttrans.out.num_changes-1) {
 384                         SIVAL(p, 0, 0);
 385                 } else {
 386                         SIVAL(p, 0, ofs);
 387                 }
 388
 389                 p += ofs;
 390         }
 391
 392         op->trans->out.params.length = p - op->trans->out.params.data;
 393
 394         return NT_STATUS_OK;
 395 }
 396
 397 /*
 398    parse NTTRANS_NOTIFY_CHANGE request
 399  */
 400 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
 401                                       struct nttrans_op *op)
 402 {
 403         struct smb_nttrans *trans = op->trans;
 404         union smb_notify *info;
 405
 406         /* should have at least 4 setup words */
 407         if (trans->in.setup_count != 4) {
 408                 return NT_STATUS_INVALID_PARAMETER;
 409         }
 410
 411         info = talloc(op, union smb_notify);
 412         NT_STATUS_HAVE_NO_MEMORY(info);
 413
 414         info->nttrans.level                     = RAW_NOTIFY_NTTRANS;
 415         info->nttrans.in.completion_filter      = IVAL(trans->in.setup, 0);
 416         info->nttrans.in.file.ntvfs             = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 417         info->nttrans.in.recursive              = SVAL(trans->in.setup, 6);
 418         info->nttrans.in.buffer_size            = trans->in.max_param;
 419
 420         op->op_info = info;
 421         op->send_fn = nttrans_notify_change_send;
 422
 423         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
 424         return ntvfs_notify(req->ntvfs, info);
 425 }
 426
 427 /*
 428   backend for nttrans requests
 429 */
 430 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
 431                                 struct nttrans_op *op)
 432 {
 433         /* the nttrans command is in function */
 434         switch (op->trans->in.function) {
 435         case NT_TRANSACT_CREATE:
 436                 return nttrans_create(req, op);
 437         case NT_TRANSACT_IOCTL:
 438                 return nttrans_ioctl(req, op);
 439         case NT_TRANSACT_RENAME:
 440                 return nttrans_rename(req, op);
 441         case NT_TRANSACT_QUERY_SECURITY_DESC:
 442                 return nttrans_query_sec_desc(req, op);
 443         case NT_TRANSACT_SET_SECURITY_DESC:
 444                 return nttrans_set_sec_desc(req, op);
 445         case NT_TRANSACT_NOTIFY_CHANGE:
 446                 return nttrans_notify_change(req, op);
 447         }
 448
 449         /* an unknown nttrans command */
 450         return NT_STATUS_DOS(ERRSRV, ERRerror);
 451 }
 452
 453
 454 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
 455 {
 456         struct smbsrv_request *req;
 457         uint16_t params_left, data_left;
 458         uint8_t *params, *data;
 459         struct smb_nttrans *trans;
 460         struct nttrans_op *op;
 461
 462         SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
 463
 464         trans = op->trans;
 465
 466         /* if this function needs work to form the nttrans reply buffer, then
 467            call that now */
 468         if (op->send_fn != NULL) {
 469                 NTSTATUS status;
 470                 status = op->send_fn(op);
 471                 if (!NT_STATUS_IS_OK(status)) {
 472                         smbsrv_send_error(req, status);
 473                         return;
 474                 }
 475         }
 476
 477         smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
 478
 479         /* note that we don't check the max_setup count (matching w2k3
 480            behaviour) */
 481
 482         if (trans->out.params.length > trans->in.max_param) {
 483                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 484                 trans->out.params.length = trans->in.max_param;
 485         }
 486         if (trans->out.data.length > trans->in.max_data) {
 487                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 488                 trans->out.data.length = trans->in.max_data;
 489         }
 490
 491         params_left = trans->out.params.length;
 492         data_left   = trans->out.data.length;
 493         params      = trans->out.params.data;
 494         data        = trans->out.data.data;
 495
 496         /* we need to divide up the reply into chunks that fit into
 497            the negotiated buffer size */
 498         do {
 499                 uint16_t this_data, this_param, max_bytes;
 500                 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
 501                 struct smbsrv_request *this_req;
 502                 int i;
 503
 504                 max_bytes = req_max_data(req) - (align1 + align2);
 505
 506                 this_param = params_left;
 507                 if (this_param > max_bytes) {
 508                         this_param = max_bytes;
 509                 }
 510                 max_bytes -= this_param;
 511
 512                 this_data = data_left;
 513                 if (this_data > max_bytes) {
 514                         this_data = max_bytes;
 515                 }
 516
 517                 /* don't destroy unless this is the last chunk */
 518                 if (params_left - this_param != 0 ||
 519                     data_left - this_data != 0) {
 520                         this_req = smbsrv_setup_secondary_request(req);
 521                 } else {
 522                         this_req = req;
 523                 }
 524
 525                 req_grow_data(req, this_param + this_data + (align1 + align2));
 526
 527                 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
 528                 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
 529                 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
 530                 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
 531
 532                 SIVAL(this_req->out.vwv, 11, this_param);
 533                 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
 534                 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
 535
 536                 SIVAL(this_req->out.vwv, 23, this_data);
 537                 SIVAL(this_req->out.vwv, 27, align1 + align2 +
 538                       PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
 539                 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
 540
 541                 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
 542                 for (i=0;i<trans->out.setup_count;i++) {
 543                         SSVAL(this_req->out.vwv, VWV(18+i), trans->out.setup[i]);
 544                 }
 545
 546                 memset(this_req->out.data, 0, align1);
 547                 if (this_param != 0) {
 548                         memcpy(this_req->out.data + align1, params, this_param);
 549                 }
 550                 memset(this_req->out.data+this_param+align1, 0, align2);
 551                 if (this_data != 0) {
 552                         memcpy(this_req->out.data+this_param+align1+align2,
 553                                data, this_data);
 554                 }
 555
 556                 params_left -= this_param;
 557                 data_left -= this_data;
 558                 params += this_param;
 559                 data += this_data;
 560
 561                 smbsrv_send_reply(this_req);
 562         } while (params_left != 0 || data_left != 0);
 563 }
 564
 565
 566 /****************************************************************************
 567  Reply to an SMBnttrans request
 568 ****************************************************************************/
 569 void smbsrv_reply_nttrans(struct smbsrv_request *req)
 570 {
 571         struct nttrans_op *op;
 572         struct smb_nttrans *trans;
 573         int i;
 574         uint16_t param_ofs, data_ofs;
 575         uint16_t param_count, data_count;
 576         uint16_t param_total, data_total;
 577
 578         /* parse request */
 579         if (req->in.wct < 19) {
 580                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 581                 return;
 582         }
 583
 584         SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
 585         SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
 586
 587         trans = talloc(op, struct smb_nttrans);
 588         if (trans == NULL) {
 589                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 590                 return;
 591         }
 592
 593         op->trans = trans;
 594         op->op_info = NULL;
 595         op->send_fn = NULL;
 596
 597         trans->in.max_setup  = CVAL(req->in.vwv, 0);
 598         param_total          = IVAL(req->in.vwv, 3);
 599         data_total           = IVAL(req->in.vwv, 7);
 600         trans->in.max_param  = IVAL(req->in.vwv, 11);
 601         trans->in.max_data   = IVAL(req->in.vwv, 15);
 602         param_count          = IVAL(req->in.vwv, 19);
 603         param_ofs            = IVAL(req->in.vwv, 23);
 604         data_count           = IVAL(req->in.vwv, 27);
 605         data_ofs             = IVAL(req->in.vwv, 31);
 606         trans->in.setup_count= CVAL(req->in.vwv, 35);
 607         trans->in.function   = SVAL(req->in.vwv, 36);
 608
 609         if (req->in.wct != 19 + trans->in.setup_count) {
 610                 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
 611                 return;
 612         }
 613
 614         /* parse out the setup words */
 615         trans->in.setup = talloc_array(req, uint16_t, trans->in.setup_count);
 616         if (!trans->in.setup) {
 617                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 618                 return;
 619         }
 620         for (i=0;i<trans->in.setup_count;i++) {
 621                 trans->in.setup[i] = SVAL(req->in.vwv, VWV(19+i));
 622         }
 623
 624         if (!req_pull_blob(req, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
 625             !req_pull_blob(req, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
 626                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 627                 return;
 628         }
 629
 630         /* is it a partial request? if so, then send a 'send more' message */
 631         if (param_total > param_count ||
 632             data_total > data_count) {
 633                 DEBUG(0,("REWRITE: not handling partial nttrans requests!\n"));
 634                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 635                 return;
 636         }
 637
 638         ZERO_STRUCT(trans->out);
 639         SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
 640 }
 641
 642
 643 /****************************************************************************
 644  Reply to an SMBnttranss request
 645 ****************************************************************************/
 646 void smbsrv_reply_nttranss(struct smbsrv_request *req)
 647 {
 648         smbsrv_send_error(req, NT_STATUS_FOOBAR);
 649 }