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 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 #include "param/param.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, uint8_t, setup_count*2);
  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         enum ndr_err_code ndr_err;
 108
 109         if (trans->in.params.length < 54) {
 110                 return NT_STATUS_INVALID_PARAMETER;
 111         }
 112
 113         /* parse the request */
 114         io = talloc(op, union smb_open);
 115         NT_STATUS_HAVE_NO_MEMORY(io);
 116
 117         io->ntcreatex.level = RAW_OPEN_NTTRANS_CREATE;
 118
 119         params = trans->in.params.data;
 120
 121         io->ntcreatex.in.flags            = IVAL(params,  0);
 122         io->ntcreatex.in.root_fid         = IVAL(params,  4);
 123         io->ntcreatex.in.access_mask      = IVAL(params,  8);
 124         io->ntcreatex.in.alloc_size       = BVAL(params, 12);
 125         io->ntcreatex.in.file_attr        = IVAL(params, 20);
 126         io->ntcreatex.in.share_access     = IVAL(params, 24);
 127         io->ntcreatex.in.open_disposition = IVAL(params, 28);
 128         io->ntcreatex.in.create_options   = IVAL(params, 32);
 129         sd_length                         = IVAL(params, 36);
 130         ea_length                         = IVAL(params, 40);
 131         fname_len                         = IVAL(params, 44);
 132         io->ntcreatex.in.impersonation    = IVAL(params, 48);
 133         io->ntcreatex.in.security_flags   = CVAL(params, 52);
 134         io->ntcreatex.in.sec_desc         = NULL;
 135         io->ntcreatex.in.ea_list          = NULL;
 136
 137         req_pull_string(req, &io->ntcreatex.in.fname,
 138                         params + 53,
 139                         MIN(fname_len+1, trans->in.params.length - 53),
 140                         STR_NO_RANGE_CHECK | STR_TERMINATE);
 141         if (!io->ntcreatex.in.fname) {
 142                 return NT_STATUS_INVALID_PARAMETER;
 143         }
 144
 145         if (sd_length > trans->in.data.length ||
 146             ea_length > trans->in.data.length ||
 147             (sd_length+ea_length) > trans->in.data.length) {
 148                 return NT_STATUS_INVALID_PARAMETER;
 149         }
 150
 151         /* this call has an optional security descriptor */
 152         if (sd_length != 0) {
 153                 DATA_BLOB blob;
 154                 blob.data = trans->in.data.data;
 155                 blob.length = sd_length;
 156                 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
 157                 if (io->ntcreatex.in.sec_desc == NULL) {
 158                         return NT_STATUS_NO_MEMORY;
 159                 }
 160                 ndr_err = ndr_pull_struct_blob(&blob, io,
 161                                                io->ntcreatex.in.sec_desc,
 162                                                (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 163                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 164                         return ndr_map_error2ntstatus(ndr_err);
 165                 }
 166         }
 167
 168         /* and an optional ea_list */
 169         if (ea_length > 4) {
 170                 DATA_BLOB blob;
 171                 blob.data = trans->in.data.data + sd_length;
 172                 blob.length = ea_length;
 173                 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
 174                 if (io->ntcreatex.in.ea_list == NULL) {
 175                         return NT_STATUS_NO_MEMORY;
 176                 }
 177
 178                 status = ea_pull_list_chained(&blob, io,
 179                                               &io->ntcreatex.in.ea_list->num_eas,
 180                                               &io->ntcreatex.in.ea_list->eas);
 181                 if (!NT_STATUS_IS_OK(status)) {
 182                         return status;
 183                 }
 184         }
 185
 186         op->send_fn = nttrans_create_send;
 187         op->op_info = io;
 188
 189         return ntvfs_open(req->ntvfs, io);
 190 }
 191
 192
 193 /*
 194    send NTTRANS_QUERY_SEC_DESC reply
 195  */
 196 static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
 197 {
 198         union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
 199         uint8_t *params;
 200         NTSTATUS status;
 201         enum ndr_err_code ndr_err;
 202
 203         status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
 204         NT_STATUS_NOT_OK_RETURN(status);
 205         params = op->trans->out.params.data;
 206
 207         ndr_err = ndr_push_struct_blob(&op->trans->out.data, op, NULL,
 208                                        io->query_secdesc.out.sd,
 209                                        (ndr_push_flags_fn_t)ndr_push_security_descriptor);
 210         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 211                 return ndr_map_error2ntstatus(ndr_err);
 212         }
 213
 214         SIVAL(params, 0, op->trans->out.data.length);
 215
 216         return NT_STATUS_OK;
 217 }
 218
 219 /*
 220    parse NTTRANS_QUERY_SEC_DESC request
 221  */
 222 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
 223                                        struct nttrans_op *op)
 224 {
 225         struct smb_nttrans *trans = op->trans;
 226         union smb_fileinfo *io;
 227
 228         if (trans->in.params.length < 8) {
 229                 return NT_STATUS_INVALID_PARAMETER;
 230         }
 231
 232         /* parse the request */
 233         io = talloc(op, union smb_fileinfo);
 234         NT_STATUS_HAVE_NO_MEMORY(io);
 235
 236         io->query_secdesc.level            = RAW_FILEINFO_SEC_DESC;
 237         io->query_secdesc.in.file.ntvfs    = smbsrv_pull_fnum(req, trans->in.params.data, 0);
 238         io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
 239
 240         op->op_info = io;
 241         op->send_fn = nttrans_query_sec_desc_send;
 242
 243         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
 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         enum ndr_err_code ndr_err;
 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.ntvfs    = smbsrv_pull_fnum(req, 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         ndr_err = 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         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 277                 return ndr_map_error2ntstatus(ndr_err);
 278         }
 279
 280         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
 281         return ntvfs_setfileinfo(req->ntvfs, io);
 282 }
 283
 284
 285 /* parse NTTRANS_RENAME request
 286  */
 287 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
 288                                struct nttrans_op *op)
 289 {
 290         return NT_STATUS_NOT_IMPLEMENTED;
 291 }
 292
 293 /*
 294    parse NTTRANS_IOCTL send
 295  */
 296 static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
 297 {
 298         union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
 299         NTSTATUS status;
 300
 301         /*
 302          * we pass 0 as data_count here,
 303          * because we reuse the DATA_BLOB from the smb_ioctl
 304          * struct
 305          */
 306         status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
 307         NT_STATUS_NOT_OK_RETURN(status);
 308
 309         op->trans->out.setup[0]         = 0;
 310         op->trans->out.data             = info->ntioctl.out.blob;
 311
 312         return NT_STATUS_OK;
 313 }
 314
 315
 316 /*
 317    parse NTTRANS_IOCTL request
 318  */
 319 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
 320                               struct nttrans_op *op)
 321 {
 322         struct smb_nttrans *trans = op->trans;
 323         union smb_ioctl *nt;
 324
 325         /* should have at least 4 setup words */
 326         if (trans->in.setup_count != 4) {
 327                 return NT_STATUS_INVALID_PARAMETER;
 328         }
 329
 330         nt = talloc(op, union smb_ioctl);
 331         NT_STATUS_HAVE_NO_MEMORY(nt);
 332
 333         nt->ntioctl.level               = RAW_IOCTL_NTIOCTL;
 334         nt->ntioctl.in.function         = IVAL(trans->in.setup, 0);
 335         nt->ntioctl.in.file.ntvfs       = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 336         nt->ntioctl.in.fsctl            = CVAL(trans->in.setup, 6);
 337         nt->ntioctl.in.filter           = CVAL(trans->in.setup, 7);
 338         nt->ntioctl.in.max_data         = trans->in.max_data;
 339         nt->ntioctl.in.blob             = trans->in.data;
 340
 341         op->op_info = nt;
 342         op->send_fn = nttrans_ioctl_send;
 343
 344         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
 345         return ntvfs_ioctl(req->ntvfs, nt);
 346 }
 347
 348
 349 /*
 350    send NTTRANS_NOTIFY_CHANGE reply
 351  */
 352 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
 353 {
 354         union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
 355         size_t size = 0;
 356         int i;
 357         NTSTATUS status;
 358         uint8_t *p;
 359 #define MAX_BYTES_PER_CHAR 3
 360
 361         /* work out how big the reply buffer could be */
 362         for (i=0;i<info->nttrans.out.num_changes;i++) {
 363                 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
 364         }
 365
 366         status = nttrans_setup_reply(op, op->trans, size, 0, 0);
 367         NT_STATUS_NOT_OK_RETURN(status);
 368         p = op->trans->out.params.data;
 369
 370         /* construct the changes buffer */
 371         for (i=0;i<info->nttrans.out.num_changes;i++) {
 372                 uint32_t ofs;
 373                 ssize_t len;
 374
 375                 SIVAL(p, 4, info->nttrans.out.changes[i].action);
 376                 len = push_string(lp_iconv_convenience(global_loadparm), p + 12, info->nttrans.out.changes[i].name.s,
 377                                   op->trans->out.params.length -
 378                                   (p+12 - op->trans->out.params.data), STR_UNICODE);
 379                 SIVAL(p, 8, len);
 380
 381                 ofs = len + 12;
 382
 383                 if (ofs & 3) {
 384                         int pad = 4 - (ofs & 3);
 385                         memset(p+ofs, 0, pad);
 386                         ofs += pad;
 387                 }
 388
 389                 if (i == info->nttrans.out.num_changes-1) {
 390                         SIVAL(p, 0, 0);
 391                 } else {
 392                         SIVAL(p, 0, ofs);
 393                 }
 394
 395                 p += ofs;
 396         }
 397
 398         op->trans->out.params.length = p - op->trans->out.params.data;
 399
 400         return NT_STATUS_OK;
 401 }
 402
 403 /*
 404    parse NTTRANS_NOTIFY_CHANGE request
 405  */
 406 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
 407                                       struct nttrans_op *op)
 408 {
 409         struct smb_nttrans *trans = op->trans;
 410         union smb_notify *info;
 411
 412         /* should have at least 4 setup words */
 413         if (trans->in.setup_count != 4) {
 414                 return NT_STATUS_INVALID_PARAMETER;
 415         }
 416
 417         info = talloc(op, union smb_notify);
 418         NT_STATUS_HAVE_NO_MEMORY(info);
 419
 420         info->nttrans.level                     = RAW_NOTIFY_NTTRANS;
 421         info->nttrans.in.completion_filter      = IVAL(trans->in.setup, 0);
 422         info->nttrans.in.file.ntvfs             = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
 423         info->nttrans.in.recursive              = SVAL(trans->in.setup, 6);
 424         info->nttrans.in.buffer_size            = trans->in.max_param;
 425
 426         op->op_info = info;
 427         op->send_fn = nttrans_notify_change_send;
 428
 429         SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
 430         return ntvfs_notify(req->ntvfs, info);
 431 }
 432
 433 /*
 434   backend for nttrans requests
 435 */
 436 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
 437                                 struct nttrans_op *op)
 438 {
 439         /* the nttrans command is in function */
 440         switch (op->trans->in.function) {
 441         case NT_TRANSACT_CREATE:
 442                 return nttrans_create(req, op);
 443         case NT_TRANSACT_IOCTL:
 444                 return nttrans_ioctl(req, op);
 445         case NT_TRANSACT_RENAME:
 446                 return nttrans_rename(req, op);
 447         case NT_TRANSACT_QUERY_SECURITY_DESC:
 448                 return nttrans_query_sec_desc(req, op);
 449         case NT_TRANSACT_SET_SECURITY_DESC:
 450                 return nttrans_set_sec_desc(req, op);
 451         case NT_TRANSACT_NOTIFY_CHANGE:
 452                 return nttrans_notify_change(req, op);
 453         }
 454
 455         /* an unknown nttrans command */
 456         return NT_STATUS_DOS(ERRSRV, ERRerror);
 457 }
 458
 459
 460 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
 461 {
 462         struct smbsrv_request *req;
 463         uint16_t params_left, data_left;
 464         uint8_t *params, *data;
 465         struct smb_nttrans *trans;
 466         struct nttrans_op *op;
 467
 468         SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
 469
 470         trans = op->trans;
 471
 472         /* if this function needs work to form the nttrans reply buffer, then
 473            call that now */
 474         if (op->send_fn != NULL) {
 475                 NTSTATUS status;
 476                 status = op->send_fn(op);
 477                 if (!NT_STATUS_IS_OK(status)) {
 478                         smbsrv_send_error(req, status);
 479                         return;
 480                 }
 481         }
 482
 483         smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
 484
 485         /* note that we don't check the max_setup count (matching w2k3
 486            behaviour) */
 487
 488         if (trans->out.params.length > trans->in.max_param) {
 489                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 490                 trans->out.params.length = trans->in.max_param;
 491         }
 492         if (trans->out.data.length > trans->in.max_data) {
 493                 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
 494                 trans->out.data.length = trans->in.max_data;
 495         }
 496
 497         params_left = trans->out.params.length;
 498         data_left   = trans->out.data.length;
 499         params      = trans->out.params.data;
 500         data        = trans->out.data.data;
 501
 502         /* we need to divide up the reply into chunks that fit into
 503            the negotiated buffer size */
 504         do {
 505                 uint16_t this_data, this_param, max_bytes;
 506                 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
 507                 struct smbsrv_request *this_req;
 508
 509                 max_bytes = req_max_data(req) - (align1 + align2);
 510
 511                 this_param = params_left;
 512                 if (this_param > max_bytes) {
 513                         this_param = max_bytes;
 514                 }
 515                 max_bytes -= this_param;
 516
 517                 this_data = data_left;
 518                 if (this_data > max_bytes) {
 519                         this_data = max_bytes;
 520                 }
 521
 522                 /* don't destroy unless this is the last chunk */
 523                 if (params_left - this_param != 0 ||
 524                     data_left - this_data != 0) {
 525                         this_req = smbsrv_setup_secondary_request(req);
 526                 } else {
 527                         this_req = req;
 528                 }
 529
 530                 req_grow_data(req, this_param + this_data + (align1 + align2));
 531
 532                 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
 533                 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
 534                 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
 535                 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
 536
 537                 SIVAL(this_req->out.vwv, 11, this_param);
 538                 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
 539                 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
 540
 541                 SIVAL(this_req->out.vwv, 23, this_data);
 542                 SIVAL(this_req->out.vwv, 27, align1 + align2 +
 543                       PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
 544                 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
 545
 546                 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
 547                 memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup,
 548                        sizeof(uint16_t) * trans->out.setup_count);
 549                 memset(this_req->out.data, 0, align1);
 550                 if (this_param != 0) {
 551                         memcpy(this_req->out.data + align1, params, this_param);
 552                 }
 553                 memset(this_req->out.data+this_param+align1, 0, align2);
 554                 if (this_data != 0) {
 555                         memcpy(this_req->out.data+this_param+align1+align2,
 556                                data, this_data);
 557                 }
 558
 559                 params_left -= this_param;
 560                 data_left -= this_data;
 561                 params += this_param;
 562                 data += this_data;
 563
 564                 smbsrv_send_reply(this_req);
 565         } while (params_left != 0 || data_left != 0);
 566 }
 567
 568
 569 /****************************************************************************
 570  Reply to an SMBnttrans request
 571 ****************************************************************************/
 572 void smbsrv_reply_nttrans(struct smbsrv_request *req)
 573 {
 574         struct nttrans_op *op;
 575         struct smb_nttrans *trans;
 576         uint16_t param_ofs, data_ofs;
 577         uint16_t param_count, data_count;
 578         uint16_t param_total, data_total;
 579
 580         /* parse request */
 581         if (req->in.wct < 19) {
 582                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 583                 return;
 584         }
 585
 586         SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
 587         SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
 588
 589         trans = talloc(op, struct smb_nttrans);
 590         if (trans == NULL) {
 591                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 592                 return;
 593         }
 594
 595         op->trans = trans;
 596         op->op_info = NULL;
 597         op->send_fn = NULL;
 598
 599         trans->in.max_setup  = CVAL(req->in.vwv, 0);
 600         param_total          = IVAL(req->in.vwv, 3);
 601         data_total           = IVAL(req->in.vwv, 7);
 602         trans->in.max_param  = IVAL(req->in.vwv, 11);
 603         trans->in.max_data   = IVAL(req->in.vwv, 15);
 604         param_count          = IVAL(req->in.vwv, 19);
 605         param_ofs            = IVAL(req->in.vwv, 23);
 606         data_count           = IVAL(req->in.vwv, 27);
 607         data_ofs             = IVAL(req->in.vwv, 31);
 608         trans->in.setup_count= CVAL(req->in.vwv, 35);
 609         trans->in.function   = SVAL(req->in.vwv, 36);
 610
 611         if (req->in.wct != 19 + trans->in.setup_count) {
 612                 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
 613                 return;
 614         }
 615
 616         /* parse out the setup words */
 617         trans->in.setup = talloc_array(req, uint8_t, trans->in.setup_count*2);
 618         if (!trans->in.setup) {
 619                 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
 620                 return;
 621         }
 622         memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19),
 623                sizeof(uint16_t) * trans->in.setup_count);
 624
 625         if (!req_pull_blob(req, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
 626             !req_pull_blob(req, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
 627                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 628                 return;
 629         }
 630
 631         /* is it a partial request? if so, then send a 'send more' message */
 632         if (param_total > param_count ||
 633             data_total > data_count) {
 634                 DEBUG(0,("REWRITE: not handling partial nttrans requests!\n"));
 635                 smbsrv_send_error(req, NT_STATUS_FOOBAR);
 636                 return;
 637         }
 638
 639         ZERO_STRUCT(trans->out);
 640         SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
 641 }
 642
 643
 644 /****************************************************************************
 645  Reply to an SMBnttranss request
 646 ****************************************************************************/
 647 void smbsrv_reply_nttranss(struct smbsrv_request *req)
 648 {
 649         smbsrv_send_error(req, NT_STATUS_FOOBAR);
 650 }