source: branches/samba-3.5.x/source4/smb_server/smb/nttrans.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 22.8 KB
Line 
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 "libcli/raw/raw_proto.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*/
35struct 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 */
43static 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*/
67static 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 */
98static 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 io->ntcreatex.in.query_maximal_access = false;
137
138 req_pull_string(&req->in.bufinfo, &io->ntcreatex.in.fname,
139 params + 53,
140 MIN(fname_len+1, trans->in.params.length - 53),
141 STR_NO_RANGE_CHECK | STR_TERMINATE);
142 if (!io->ntcreatex.in.fname) {
143 return NT_STATUS_INVALID_PARAMETER;
144 }
145
146 if (sd_length > trans->in.data.length ||
147 ea_length > trans->in.data.length ||
148 (sd_length+ea_length) > trans->in.data.length) {
149 return NT_STATUS_INVALID_PARAMETER;
150 }
151
152 /* this call has an optional security descriptor */
153 if (sd_length != 0) {
154 DATA_BLOB blob;
155 blob.data = trans->in.data.data;
156 blob.length = sd_length;
157 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
158 if (io->ntcreatex.in.sec_desc == NULL) {
159 return NT_STATUS_NO_MEMORY;
160 }
161 ndr_err = ndr_pull_struct_blob(&blob, io, NULL,
162 io->ntcreatex.in.sec_desc,
163 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
164 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
165 return ndr_map_error2ntstatus(ndr_err);
166 }
167 }
168
169 /* and an optional ea_list */
170 if (ea_length > 4) {
171 DATA_BLOB blob;
172 blob.data = trans->in.data.data + sd_length;
173 blob.length = ea_length;
174 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
175 if (io->ntcreatex.in.ea_list == NULL) {
176 return NT_STATUS_NO_MEMORY;
177 }
178
179 status = ea_pull_list_chained(&blob, io,
180 &io->ntcreatex.in.ea_list->num_eas,
181 &io->ntcreatex.in.ea_list->eas);
182 if (!NT_STATUS_IS_OK(status)) {
183 return status;
184 }
185 }
186
187 op->send_fn = nttrans_create_send;
188 op->op_info = io;
189
190 return ntvfs_open(req->ntvfs, io);
191}
192
193
194/*
195 send NTTRANS_QUERY_SEC_DESC reply
196 */
197static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
198{
199 union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
200 uint8_t *params;
201 NTSTATUS status;
202 enum ndr_err_code ndr_err;
203
204 status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
205 NT_STATUS_NOT_OK_RETURN(status);
206 params = op->trans->out.params.data;
207
208 ndr_err = ndr_push_struct_blob(&op->trans->out.data, op, NULL,
209 io->query_secdesc.out.sd,
210 (ndr_push_flags_fn_t)ndr_push_security_descriptor);
211 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
212 return ndr_map_error2ntstatus(ndr_err);
213 }
214
215 SIVAL(params, 0, op->trans->out.data.length);
216
217 return NT_STATUS_OK;
218}
219
220/*
221 parse NTTRANS_QUERY_SEC_DESC request
222 */
223static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
224 struct nttrans_op *op)
225{
226 struct smb_nttrans *trans = op->trans;
227 union smb_fileinfo *io;
228
229 if (trans->in.params.length < 8) {
230 return NT_STATUS_INVALID_PARAMETER;
231 }
232
233 /* parse the request */
234 io = talloc(op, union smb_fileinfo);
235 NT_STATUS_HAVE_NO_MEMORY(io);
236
237 io->query_secdesc.level = RAW_FILEINFO_SEC_DESC;
238 io->query_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
239 io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
240
241 op->op_info = io;
242 op->send_fn = nttrans_query_sec_desc_send;
243
244 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
245 return ntvfs_qfileinfo(req->ntvfs, io);
246}
247
248
249/*
250 parse NTTRANS_SET_SEC_DESC request
251 */
252static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
253 struct nttrans_op *op)
254{
255 struct smb_nttrans *trans = op->trans;
256 union smb_setfileinfo *io;
257 enum ndr_err_code ndr_err;
258
259 if (trans->in.params.length < 8) {
260 return NT_STATUS_INVALID_PARAMETER;
261 }
262
263 /* parse the request */
264 io = talloc(req, union smb_setfileinfo);
265 NT_STATUS_HAVE_NO_MEMORY(io);
266
267 io->set_secdesc.level = RAW_SFILEINFO_SEC_DESC;
268 io->set_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
269 io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
270
271 io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
272 NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
273
274 ndr_err = ndr_pull_struct_blob(&trans->in.data, req, NULL,
275 io->set_secdesc.in.sd,
276 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
277 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
278 return ndr_map_error2ntstatus(ndr_err);
279 }
280
281 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
282 return ntvfs_setfileinfo(req->ntvfs, io);
283}
284
285
286/* parse NTTRANS_RENAME request
287 */
288static NTSTATUS nttrans_rename(struct smbsrv_request *req,
289 struct nttrans_op *op)
290{
291 struct smb_nttrans *trans = op->trans;
292 union smb_rename *io;
293
294 if (trans->in.params.length < 5) {
295 return NT_STATUS_INVALID_PARAMETER;
296 }
297
298 /* parse the request */
299 io = talloc(req, union smb_rename);
300 NT_STATUS_HAVE_NO_MEMORY(io);
301
302 io->nttrans.level = RAW_RENAME_NTTRANS;
303 io->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
304 io->nttrans.in.flags = SVAL(trans->in.params.data, 2);
305
306 smbsrv_blob_pull_string(&req->in.bufinfo, &trans->in.params, 4,
307 &io->nttrans.in.new_name,
308 STR_TERMINATE);
309 if (!io->nttrans.in.new_name) {
310 return NT_STATUS_INVALID_PARAMETER;
311 }
312
313 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->nttrans.in.file.ntvfs);
314 return ntvfs_rename(req->ntvfs, io);
315}
316
317/*
318 parse NTTRANS_IOCTL send
319 */
320static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
321{
322 union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
323 NTSTATUS status;
324
325 /*
326 * we pass 0 as data_count here,
327 * because we reuse the DATA_BLOB from the smb_ioctl
328 * struct
329 */
330 status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
331 NT_STATUS_NOT_OK_RETURN(status);
332
333 op->trans->out.setup[0] = 0;
334 op->trans->out.data = info->ntioctl.out.blob;
335
336 return NT_STATUS_OK;
337}
338
339
340/*
341 parse NTTRANS_IOCTL request
342 */
343static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
344 struct nttrans_op *op)
345{
346 struct smb_nttrans *trans = op->trans;
347 union smb_ioctl *nt;
348
349 /* should have at least 4 setup words */
350 if (trans->in.setup_count != 4) {
351 return NT_STATUS_INVALID_PARAMETER;
352 }
353
354 nt = talloc(op, union smb_ioctl);
355 NT_STATUS_HAVE_NO_MEMORY(nt);
356
357 nt->ntioctl.level = RAW_IOCTL_NTIOCTL;
358 nt->ntioctl.in.function = IVAL(trans->in.setup, 0);
359 nt->ntioctl.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
360 nt->ntioctl.in.fsctl = CVAL(trans->in.setup, 6);
361 nt->ntioctl.in.filter = CVAL(trans->in.setup, 7);
362 nt->ntioctl.in.max_data = trans->in.max_data;
363 nt->ntioctl.in.blob = trans->in.data;
364
365 op->op_info = nt;
366 op->send_fn = nttrans_ioctl_send;
367
368 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
369 return ntvfs_ioctl(req->ntvfs, nt);
370}
371
372
373/*
374 send NTTRANS_NOTIFY_CHANGE reply
375 */
376static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
377{
378 union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
379 size_t size = 0;
380 int i;
381 NTSTATUS status;
382 uint8_t *p;
383#define MAX_BYTES_PER_CHAR 3
384
385 /* work out how big the reply buffer could be */
386 for (i=0;i<info->nttrans.out.num_changes;i++) {
387 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
388 }
389
390 status = nttrans_setup_reply(op, op->trans, size, 0, 0);
391 NT_STATUS_NOT_OK_RETURN(status);
392 p = op->trans->out.params.data;
393
394 /* construct the changes buffer */
395 for (i=0;i<info->nttrans.out.num_changes;i++) {
396 uint32_t ofs;
397 ssize_t len;
398
399 SIVAL(p, 4, info->nttrans.out.changes[i].action);
400 len = push_string(p + 12, info->nttrans.out.changes[i].name.s,
401 op->trans->out.params.length -
402 (p+12 - op->trans->out.params.data), STR_UNICODE);
403 SIVAL(p, 8, len);
404
405 ofs = len + 12;
406
407 if (ofs & 3) {
408 int pad = 4 - (ofs & 3);
409 memset(p+ofs, 0, pad);
410 ofs += pad;
411 }
412
413 if (i == info->nttrans.out.num_changes-1) {
414 SIVAL(p, 0, 0);
415 } else {
416 SIVAL(p, 0, ofs);
417 }
418
419 p += ofs;
420 }
421
422 op->trans->out.params.length = p - op->trans->out.params.data;
423
424 return NT_STATUS_OK;
425}
426
427/*
428 parse NTTRANS_NOTIFY_CHANGE request
429 */
430static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
431 struct nttrans_op *op)
432{
433 struct smb_nttrans *trans = op->trans;
434 union smb_notify *info;
435
436 /* should have at least 4 setup words */
437 if (trans->in.setup_count != 4) {
438 return NT_STATUS_INVALID_PARAMETER;
439 }
440
441 info = talloc(op, union smb_notify);
442 NT_STATUS_HAVE_NO_MEMORY(info);
443
444 info->nttrans.level = RAW_NOTIFY_NTTRANS;
445 info->nttrans.in.completion_filter = IVAL(trans->in.setup, 0);
446 info->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
447 info->nttrans.in.recursive = SVAL(trans->in.setup, 6);
448 info->nttrans.in.buffer_size = trans->in.max_param;
449
450 op->op_info = info;
451 op->send_fn = nttrans_notify_change_send;
452
453 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
454 return ntvfs_notify(req->ntvfs, info);
455}
456
457/*
458 backend for nttrans requests
459*/
460static NTSTATUS nttrans_backend(struct smbsrv_request *req,
461 struct nttrans_op *op)
462{
463 /* the nttrans command is in function */
464 switch (op->trans->in.function) {
465 case NT_TRANSACT_CREATE:
466 return nttrans_create(req, op);
467 case NT_TRANSACT_IOCTL:
468 return nttrans_ioctl(req, op);
469 case NT_TRANSACT_RENAME:
470 return nttrans_rename(req, op);
471 case NT_TRANSACT_QUERY_SECURITY_DESC:
472 return nttrans_query_sec_desc(req, op);
473 case NT_TRANSACT_SET_SECURITY_DESC:
474 return nttrans_set_sec_desc(req, op);
475 case NT_TRANSACT_NOTIFY_CHANGE:
476 return nttrans_notify_change(req, op);
477 }
478
479 /* an unknown nttrans command */
480 return NT_STATUS_DOS(ERRSRV, ERRerror);
481}
482
483
484static void reply_nttrans_send(struct ntvfs_request *ntvfs)
485{
486 struct smbsrv_request *req;
487 uint32_t params_left, data_left;
488 uint8_t *params, *data;
489 struct smb_nttrans *trans;
490 struct nttrans_op *op;
491
492 SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
493
494 trans = op->trans;
495
496 /* if this function needs work to form the nttrans reply buffer, then
497 call that now */
498 if (op->send_fn != NULL) {
499 NTSTATUS status;
500 status = op->send_fn(op);
501 if (!NT_STATUS_IS_OK(status)) {
502 smbsrv_send_error(req, status);
503 return;
504 }
505 }
506
507 smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
508
509 /* note that we don't check the max_setup count (matching w2k3
510 behaviour) */
511
512 if (trans->out.params.length > trans->in.max_param) {
513 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
514 trans->out.params.length = trans->in.max_param;
515 }
516 if (trans->out.data.length > trans->in.max_data) {
517 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
518 trans->out.data.length = trans->in.max_data;
519 }
520
521 params_left = trans->out.params.length;
522 data_left = trans->out.data.length;
523 params = trans->out.params.data;
524 data = trans->out.data.data;
525
526 /* we need to divide up the reply into chunks that fit into
527 the negotiated buffer size */
528 do {
529 uint32_t this_data, this_param, max_bytes;
530 uint_t align1 = 1, align2 = (params_left ? 2 : 0);
531 struct smbsrv_request *this_req;
532
533 max_bytes = req_max_data(req) - (align1 + align2);
534
535 this_param = params_left;
536 if (this_param > max_bytes) {
537 this_param = max_bytes;
538 }
539 max_bytes -= this_param;
540
541 this_data = data_left;
542 if (this_data > max_bytes) {
543 this_data = max_bytes;
544 }
545
546 /* don't destroy unless this is the last chunk */
547 if (params_left - this_param != 0 ||
548 data_left - this_data != 0) {
549 this_req = smbsrv_setup_secondary_request(req);
550 } else {
551 this_req = req;
552 }
553
554 req_grow_data(this_req, this_param + this_data + (align1 + align2));
555
556 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
557 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
558 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
559 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
560
561 SIVAL(this_req->out.vwv, 11, this_param);
562 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
563 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
564
565 SIVAL(this_req->out.vwv, 23, this_data);
566 SIVAL(this_req->out.vwv, 27, align1 + align2 +
567 PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
568 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
569
570 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
571 memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup,
572 sizeof(uint16_t) * trans->out.setup_count);
573 memset(this_req->out.data, 0, align1);
574 if (this_param != 0) {
575 memcpy(this_req->out.data + align1, params, this_param);
576 }
577 memset(this_req->out.data+this_param+align1, 0, align2);
578 if (this_data != 0) {
579 memcpy(this_req->out.data+this_param+align1+align2,
580 data, this_data);
581 }
582
583 params_left -= this_param;
584 data_left -= this_data;
585 params += this_param;
586 data += this_data;
587
588 smbsrv_send_reply(this_req);
589 } while (params_left != 0 || data_left != 0);
590}
591
592/*
593 send a continue request
594*/
595static void reply_nttrans_continue(struct smbsrv_request *req, struct smb_nttrans *trans)
596{
597 struct smbsrv_request *req2;
598 struct smbsrv_trans_partial *tp;
599 int count;
600
601 /* make sure they don't flood us */
602 for (count=0,tp=req->smb_conn->trans_partial;tp;tp=tp->next) count++;
603 if (count > 100) {
604 smbsrv_send_error(req, NT_STATUS_INSUFFICIENT_RESOURCES);
605 return;
606 }
607
608 tp = talloc(req, struct smbsrv_trans_partial);
609
610 tp->req = req;
611 tp->u.nttrans = trans;
612 tp->command = SMBnttrans;
613
614 DLIST_ADD(req->smb_conn->trans_partial, tp);
615 talloc_set_destructor(tp, smbsrv_trans_partial_destructor);
616
617 req2 = smbsrv_setup_secondary_request(req);
618
619 /* send a 'please continue' reply */
620 smbsrv_setup_reply(req2, 0, 0);
621 smbsrv_send_reply(req2);
622}
623
624
625/*
626 answer a reconstructed trans request
627*/
628static void reply_nttrans_complete(struct smbsrv_request *req, struct smb_nttrans *trans)
629{
630 struct nttrans_op *op;
631
632 SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
633 SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
634
635 op->trans = trans;
636 op->op_info = NULL;
637 op->send_fn = NULL;
638
639 /* its a full request, give it to the backend */
640 ZERO_STRUCT(trans->out);
641 SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
642}
643
644
645/****************************************************************************
646 Reply to an SMBnttrans request
647****************************************************************************/
648void smbsrv_reply_nttrans(struct smbsrv_request *req)
649{
650 struct smb_nttrans *trans;
651 uint32_t param_ofs, data_ofs;
652 uint32_t param_count, data_count;
653 uint32_t param_total, data_total;
654
655 /* parse request */
656 if (req->in.wct < 19) {
657 smbsrv_send_error(req, NT_STATUS_FOOBAR);
658 return;
659 }
660
661 trans = talloc(req, struct smb_nttrans);
662 if (trans == NULL) {
663 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
664 return;
665 }
666
667 trans->in.max_setup = CVAL(req->in.vwv, 0);
668 param_total = IVAL(req->in.vwv, 3);
669 data_total = IVAL(req->in.vwv, 7);
670 trans->in.max_param = IVAL(req->in.vwv, 11);
671 trans->in.max_data = IVAL(req->in.vwv, 15);
672 param_count = IVAL(req->in.vwv, 19);
673 param_ofs = IVAL(req->in.vwv, 23);
674 data_count = IVAL(req->in.vwv, 27);
675 data_ofs = IVAL(req->in.vwv, 31);
676 trans->in.setup_count= CVAL(req->in.vwv, 35);
677 trans->in.function = SVAL(req->in.vwv, 36);
678
679 if (req->in.wct != 19 + trans->in.setup_count) {
680 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
681 return;
682 }
683
684 /* parse out the setup words */
685 trans->in.setup = talloc_array(req, uint8_t, trans->in.setup_count*2);
686 if (!trans->in.setup) {
687 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
688 return;
689 }
690 memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19),
691 sizeof(uint16_t) * trans->in.setup_count);
692
693 if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
694 !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
695 smbsrv_send_error(req, NT_STATUS_FOOBAR);
696 return;
697 }
698
699 /* is it a partial request? if so, then send a 'send more' message */
700 if (param_total > param_count || data_total > data_count) {
701 reply_nttrans_continue(req, trans);
702 return;
703 }
704
705 reply_nttrans_complete(req, trans);
706}
707
708
709/****************************************************************************
710 Reply to an SMBnttranss request
711****************************************************************************/
712void smbsrv_reply_nttranss(struct smbsrv_request *req)
713{
714 struct smbsrv_trans_partial *tp;
715 struct smb_nttrans *trans = NULL;
716 uint32_t param_ofs, data_ofs;
717 uint32_t param_count, data_count;
718 uint32_t param_disp, data_disp;
719 uint32_t param_total, data_total;
720 DATA_BLOB params, data;
721
722 /* parse request */
723 if (req->in.wct != 18) {
724 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
725 return;
726 }
727
728 for (tp=req->smb_conn->trans_partial;tp;tp=tp->next) {
729 if (tp->command == SMBnttrans &&
730 SVAL(tp->req->in.hdr, HDR_MID) == SVAL(req->in.hdr, HDR_MID)) {
731/* TODO: check the VUID, PID and TID too? */
732 break;
733 }
734 }
735
736 if (tp == NULL) {
737 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
738 return;
739 }
740
741 trans = tp->u.nttrans;
742
743 param_total = IVAL(req->in.vwv, 3);
744 data_total = IVAL(req->in.vwv, 7);
745 param_count = IVAL(req->in.vwv, 11);
746 param_ofs = IVAL(req->in.vwv, 15);
747 param_disp = IVAL(req->in.vwv, 19);
748 data_count = IVAL(req->in.vwv, 23);
749 data_ofs = IVAL(req->in.vwv, 27);
750 data_disp = IVAL(req->in.vwv, 31);
751
752 if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, &params) ||
753 !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &data)) {
754 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
755 return;
756 }
757
758 /* only allow contiguous requests */
759 if ((param_count != 0 &&
760 param_disp != trans->in.params.length) ||
761 (data_count != 0 &&
762 data_disp != trans->in.data.length)) {
763 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
764 return;
765 }
766
767 /* add to the existing request */
768 if (param_count != 0) {
769 trans->in.params.data = talloc_realloc(trans,
770 trans->in.params.data,
771 uint8_t,
772 param_disp + param_count);
773 if (trans->in.params.data == NULL) {
774 smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY);
775 return;
776 }
777 trans->in.params.length = param_disp + param_count;
778 }
779
780 if (data_count != 0) {
781 trans->in.data.data = talloc_realloc(trans,
782 trans->in.data.data,
783 uint8_t,
784 data_disp + data_count);
785 if (trans->in.data.data == NULL) {
786 smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY);
787 return;
788 }
789 trans->in.data.length = data_disp + data_count;
790 }
791
792 memcpy(trans->in.params.data + param_disp, params.data, params.length);
793 memcpy(trans->in.data.data + data_disp, data.data, data.length);
794
795 /* the sequence number of the reply is taken from the last secondary
796 response */
797 tp->req->seq_num = req->seq_num;
798
799 /* we don't reply to Transs2 requests */
800 talloc_free(req);
801
802 if (trans->in.params.length == param_total &&
803 trans->in.data.length == data_total) {
804 /* its now complete */
805 req = tp->req;
806 talloc_free(tp);
807 reply_nttrans_complete(req, trans);
808 }
809 return;
810}
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