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         enum ndr_err_code ndr_err;
 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                 ndr_err = ndr_pull_struct_blob(&blob, io,
 160                                                io->ntcreatex.in.sec_desc,
 161                                                (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 162                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 163                         return ndr_map_error2ntstatus(ndr_err);
 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         enum ndr_err_code ndr_err;
 201
 202         status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
 203         NT_STATUS_NOT_OK_RETURN(status);
 204         params = op->trans->out.params.data;
 205
 206         ndr_err = ndr_push_struct_blob(&op->trans->out.data, op,
 207                                        io->query_secdesc.out.sd,
 208                                        (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 209         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 210                 return ndr_map_error2ntstatus(ndr_err);
 211         }
 212
 213         SIVAL(params, 0, op->trans->out.data.length);
 214
 215         return NT_STATUS_OK;
 216 }
 217
 218 /*
 219    parse NTTRANS_QUERY_SEC_DESC request
 220  */
 221 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
 222                                        struct nttrans_op *op)
 223 {
 224         struct smb_nttrans *trans = op->trans;
 225         union smb_fileinfo *io;
 226
 227         if (trans->in.params.length < 8) {
 228                 return NT_STATUS_INVALID_PARAMETER;
 229         }
 230
 231         /* parse the request */
 232         io = talloc(op, union smb_fileinfo);
 233         NT_STATUS_HAVE_NO_MEMORY(io);
 234
 235         io->query_secdesc.level            = RAW_FILEINFO_SEC_DESC;
 236         io->query_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 237         io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 238
 239         op->op_info = io;
 240         op->send_fn = nttrans_query_sec_desc_send;
 241
 242         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
 243         return ntvfs_qfileinfo(req->ntvfs, io);
 244 }
 245
 246
 247 /*
 248    parse NTTRANS_SET_SEC_DESC request
 249  */
 250 static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
 251                                      struct nttrans_op *op)
 252 {
 253         struct smb_nttrans *trans = op->trans;
 254         union smb_setfileinfo *io;
 255         enum ndr_err_code ndr_err;
 256
 257         if (trans->in.params.length < 8) {
 258                 return NT_STATUS_INVALID_PARAMETER;
 259         }
 260
 261         /* parse the request */
 262         io = talloc(req, union smb_setfileinfo);
 263         NT_STATUS_HAVE_NO_MEMORY(io);
 264
 265         io->set_secdesc.level            = RAW_SFILEINFO_SEC_DESC;
 266         io->set_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 267         io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 268
 269         io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
 270         NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
 271
 272         ndr_err = ndr_pull_struct_blob(&trans->in.data, req,
 273                                        io->set_secdesc.in.sd,
 274                                        (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 275         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 276                 return ndr_map_error2ntstatus(ndr_err);
 277         }
 278
 279         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
 280         return ntvfs_setfileinfo(req->ntvfs, io);
 281 }
 282
 283
 284 /* parse NTTRANS_RENAME request
 285  */
 286 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
 287                                struct nttrans_op *op)
 288 {
 289         return NT_STATUS_NOT_IMPLEMENTED;
 290 }
 291
 292 /*
 293    parse NTTRANS_IOCTL send
 294  */
 295 static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
 296 {
 297         union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
 298         NTSTATUS status;
 299
 300         /*
 301          * we pass 0 as data_count here,
 302          * because we reuse the DATA_BLOB from the smb_ioctl
 303          * struct
 304          */
 305         status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
 306         NT_STATUS_NOT_OK_RETURN(status);
 307
 308         op->trans->out.setup[0]         = 0;
 309         op->trans->out.data             = info->ntioctl.out.blob;
 310
 311         return NT_STATUS_OK;
 312 }
 313
 314
 315 /*
 316    parse NTTRANS_IOCTL request
 317  */
 318 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
 319                               struct nttrans_op *op)
 320 {
 321         struct smb_nttrans *trans = op->trans;
 322         union smb_ioctl *nt;
 323
 324         /* should have at least 4 setup words */
 325         if (trans->in.setup_count != 4) {
 326                 return NT_STATUS_INVALID_PARAMETER;
 327         }
 328
 329         nt = talloc(op, union smb_ioctl);
 330         NT_STATUS_HAVE_NO_MEMORY(nt);
 331
 332         nt->ntioctl.level               = RAW_IOCTL_NTIOCTL;
 333         nt->ntioctl.in.function         = IVAL(trans->in.setup, 0);
 334         nt->ntioctl.in.file.ntvfs       = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 335         nt->ntioctl.in.fsctl            = CVAL(trans->in.setup, 6);
 336         nt->ntioctl.in.filter           = CVAL(trans->in.setup, 7);
 337         nt->ntioctl.in.max_data         = trans->in.max_data;
 338         nt->ntioctl.in.blob             = trans->in.data;
 339
 340         op->op_info = nt;
 341         op->send_fn = nttrans_ioctl_send;
 342
 343         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
 344         return ntvfs_ioctl(req->ntvfs, nt);
 345 }
 346
 347
 348 /*
 349    send NTTRANS_NOTIFY_CHANGE reply
 350  */
 351 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
 352 {
 353         union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
 354         size_t size = 0;
 355         int i;
 356         NTSTATUS status;
 357         uint8_t *p;
 358 #define MAX_BYTES_PER_CHAR 3
 359
 360         /* work out how big the reply buffer could be */
 361         for (i=0;i<info->nttrans.out.num_changes;i++) {
 362                 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
 363         }
 364
 365         status = nttrans_setup_reply(op, op->trans, size, 0, 0);
 366         NT_STATUS_NOT_OK_RETURN(status);
 367         p = op->trans->out.params.data;
 368
 369         /* construct the changes buffer */
 370         for (i=0;i<info->nttrans.out.num_changes;i++) {
 371                 uint32_t ofs;
 372                 ssize_t len;
 373
 374                 SIVAL(p, 4, info->nttrans.out.changes[i].action);
 375                 len = push_string(global_smb_iconv_convenience, p + 12, info->nttrans.out.changes[i].name.s,
 376                                   op->trans->out.params.length -
 377                                   (p+12 - op->trans->out.params.data), STR_UNICODE);
 378                 SIVAL(p, 8, len);
 379
 380                 ofs = len + 12;
 381
 382                 if (ofs & 3) {
 383                         int pad = 4 - (ofs & 3);
 384                         memset(p+ofs, 0, pad);
 385                         ofs += pad;
 386                 }
 387
 388                 if (i == info->nttrans.out.num_changes-1) {
 389                         SIVAL(p, 0, 0);
 390                 } else {
 391                         SIVAL(p, 0, ofs);
 392                 }
 393
 394                 p += ofs;
 395         }
 396
 397         op->trans->out.params.length = p - op->trans->out.params.data;
 398
 399         return NT_STATUS_OK;
 400 }
 401
 402 /*
 403    parse NTTRANS_NOTIFY_CHANGE request
 404  */
 405 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
 406                                       struct nttrans_op *op)
 407 {
 408         struct smb_nttrans *trans = op->trans;
 409         union smb_notify *info;
 410
 411         /* should have at least 4 setup words */
 412         if (trans->in.setup_count != 4) {
 413                 return NT_STATUS_INVALID_PARAMETER;
 414         }
 415
 416         info = talloc(op, union smb_notify);
 417         NT_STATUS_HAVE_NO_MEMORY(info);
 418
 419         info->nttrans.level                     = RAW_NOTIFY_NTTRANS;
 420         info->nttrans.in.completion_filter      = IVAL(trans->in.setup, 0);
 421         info->nttrans.in.file.ntvfs             = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 422         info->nttrans.in.recursive              = SVAL(trans->in.setup, 6);
 423         info->nttrans.in.buffer_size            = trans->in.max_param;
 424
 425         op->op_info = info;
 426         op->send_fn = nttrans_notify_change_send;
 427
 428         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
 429         return ntvfs_notify(req->ntvfs, info);
 430 }
 431
 432 /*
 433   backend for nttrans requests
 434 */
 435 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
 436                                 struct nttrans_op *op)
 437 {
 438         /* the nttrans command is in function */
 439         switch (op->trans->in.function) {
 440         case NT_TRANSACT_CREATE:
 441                 return nttrans_create(req, op);
 442         case NT_TRANSACT_IOCTL:
 443                 return nttrans_ioctl(req, op);
 444         case NT_TRANSACT_RENAME:
 445                 return nttrans_rename(req, op);
 446         case NT_TRANSACT_QUERY_SECURITY_DESC:
 447                 return nttrans_query_sec_desc(req, op);
 448         case NT_TRANSACT_SET_SECURITY_DESC:
 449                 return nttrans_set_sec_desc(req, op);
 450         case NT_TRANSACT_NOTIFY_CHANGE:
 451                 return nttrans_notify_change(req, op);
 452         }
 453
 454         /* an unknown nttrans command */
 455         return NT_STATUS_DOS(ERRSRV, ERRerror);
 456 }
 457
 458
 459 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
 460 {
 461         struct smbsrv_request *req;
 462         uint16_t params_left, data_left;
 463         uint8_t *params, *data;
 464         struct smb_nttrans *trans;
 465         struct nttrans_op *op;
 466
 467         SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
 468
 469         trans = op->trans;
 470
 471         /* if this function needs work to form the nttrans reply buffer, then
 472            call that now */
 473         if (op->send_fn != NULL) {
 474                 NTSTATUS status;
 475                 status = op->send_fn(op);
 476                 if (!NT_STATUS_IS_OK(status)) {
 477                         smbsrv_send_error(req, status);
 478                         return;
 479                 }
 480         }
 481
 482         smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
 483
 484         /* note that we don't check the max_setup count (matching w2k3
 485            behaviour) */
 486
 487         if (trans->out.params.length > trans->in.max_param) {
 488                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 489                 trans->out.params.length = trans->in.max_param;
 490         }
 491         if (trans->out.data.length > trans->in.max_data) {
 492                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 493                 trans->out.data.length = trans->in.max_data;
 494         }
 495
 496         params_left = trans->out.params.length;
 497         data_left   = trans->out.data.length;
 498         params      = trans->out.params.data;
 499         data        = trans->out.data.data;
 500
 501         /* we need to divide up the reply into chunks that fit into
 502            the negotiated buffer size */
 503         do {
 504                 uint16_t this_data, this_param, max_bytes;
 505                 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
 506                 struct smbsrv_request *this_req;
 507
 508                 max_bytes = req_max_data(req) - (align1 + align2);
 509
 510                 this_param = params_left;
 511                 if (this_param > max_bytes) {
 512                         this_param = max_bytes;
 513                 }
 514                 max_bytes -= this_param;
 515
 516                 this_data = data_left;
 517                 if (this_data > max_bytes) {
 518                         this_data = max_bytes;
 519                 }
 520
 521                 /* don't destroy unless this is the last chunk */
 522                 if (params_left - this_param != 0 ||
 523                     data_left - this_data != 0) {
 524                         this_req = smbsrv_setup_secondary_request(req);
 525                 } else {
 526                         this_req = req;
 527                 }
 528
 529                 req_grow_data(req, this_param + this_data + (align1 + align2));
 530
 531                 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
 532                 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
 533                 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
 534                 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
 535
 536                 SIVAL(this_req->out.vwv, 11, this_param);
 537                 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
 538                 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
 539
 540                 SIVAL(this_req->out.vwv, 23, this_data);
 541                 SIVAL(this_req->out.vwv, 27, align1 + align2 +
 542                       PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
 543                 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
 544
 545                 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
 546                 memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup,
 547                        sizeof(uint16_t) * trans->out.setup_count);
 548                 memset(this_req->out.data, 0, align1);
 549                 if (this_param != 0) {
 550                         memcpy(this_req->out.data + align1, params, this_param);
 551                 }
 552                 memset(this_req->out.data+this_param+align1, 0, align2);
 553                 if (this_data != 0) {
 554                         memcpy(this_req->out.data+this_param+align1+align2,
 555                                data, this_data);
 556                 }
 557
 558                 params_left -= this_param;
 559                 data_left -= this_data;
 560                 params += this_param;
 561                 data += this_data;
 562
 563                 smbsrv_send_reply(this_req);
 564         } while (params_left != 0 || data_left != 0);
 565 }
 566
 567
 568 /****************************************************************************
 569  Reply to an SMBnttrans request
 570 ****************************************************************************/
 571 void smbsrv_reply_nttrans(struct smbsrv_request *req)
 572 {
 573         struct nttrans_op *op;
 574         struct smb_nttrans *trans;
 575         uint16_t param_ofs, data_ofs;
 576         uint16_t param_count, data_count;
 577         uint16_t param_total, data_total;
 578
 579         /* parse request */
 580         if (req->in.wct < 19) {
 581                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 582                 return;
 583         }
 584
 585         SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
 586         SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
 587
 588         trans = talloc(op, struct smb_nttrans);
 589         if (trans == NULL) {
 590                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 591                 return;
 592         }
 593
 594         op->trans = trans;
 595         op->op_info = NULL;
 596         op->send_fn = NULL;
 597
 598         trans->in.max_setup  = CVAL(req->in.vwv, 0);
 599         param_total          = IVAL(req->in.vwv, 3);
 600         data_total           = IVAL(req->in.vwv, 7);
 601         trans->in.max_param  = IVAL(req->in.vwv, 11);
 602         trans->in.max_data   = IVAL(req->in.vwv, 15);
 603         param_count          = IVAL(req->in.vwv, 19);
 604         param_ofs            = IVAL(req->in.vwv, 23);
 605         data_count           = IVAL(req->in.vwv, 27);
 606         data_ofs             = IVAL(req->in.vwv, 31);
 607         trans->in.setup_count= CVAL(req->in.vwv, 35);
 608         trans->in.function   = SVAL(req->in.vwv, 36);
 609
 610         if (req->in.wct != 19 + trans->in.setup_count) {
 611                 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
 612                 return;
 613         }
 614
 615         /* parse out the setup words */
 616         trans->in.setup = talloc_array(req, uint8_t, trans->in.setup_count*2);
 617         if (!trans->in.setup) {
 618                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 619                 return;
 620         }
 621         memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19),
 622                sizeof(uint16_t) * trans->in.setup_count);
 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 }