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s3/docs: Remove superfluous bracket.
[Samba/gbeck.git] / source4 / smb_server / smb / nttrans.c
blobcfef9d18a42f4fe84f9fb8aaa776bc09dd73081b
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 */
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.ntvfs = smbsrv_pull_fnum(req, 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 io->ntcreatex.in.private_flags = 0;
138
139 req_pull_string(&req->in.bufinfo, &io->ntcreatex.in.fname,
140 params + 53,
141 MIN(fname_len+1, trans->in.params.length - 53),
142 STR_NO_RANGE_CHECK | STR_TERMINATE);
143 if (!io->ntcreatex.in.fname) {
144 return NT_STATUS_INVALID_PARAMETER;
145 }
146
147 if (sd_length > trans->in.data.length ||
148 ea_length > trans->in.data.length ||
149 (sd_length+ea_length) > trans->in.data.length) {
150 return NT_STATUS_INVALID_PARAMETER;
151 }
152
153 /* this call has an optional security descriptor */
154 if (sd_length != 0) {
155 DATA_BLOB blob;
156 blob.data = trans->in.data.data;
157 blob.length = sd_length;
158 io->ntcreatex.in.sec_desc = talloc(io, struct security_descriptor);
159 if (io->ntcreatex.in.sec_desc == NULL) {
160 return NT_STATUS_NO_MEMORY;
161 }
162 ndr_err = ndr_pull_struct_blob(&blob, io,
163 io->ntcreatex.in.sec_desc,
164 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
165 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
166 return ndr_map_error2ntstatus(ndr_err);
167 }
168 }
169
170 /* and an optional ea_list */
171 if (ea_length > 4) {
172 DATA_BLOB blob;
173 blob.data = trans->in.data.data + sd_length;
174 blob.length = ea_length;
175 io->ntcreatex.in.ea_list = talloc(io, struct smb_ea_list);
176 if (io->ntcreatex.in.ea_list == NULL) {
177 return NT_STATUS_NO_MEMORY;
178 }
179
180 status = ea_pull_list_chained(&blob, io,
181 &io->ntcreatex.in.ea_list->num_eas,
182 &io->ntcreatex.in.ea_list->eas);
183 if (!NT_STATUS_IS_OK(status)) {
184 return status;
185 }
186 }
187
188 op->send_fn = nttrans_create_send;
189 op->op_info = io;
190
191 return ntvfs_open(req->ntvfs, io);
192 }
193
194
195 /*
196 send NTTRANS_QUERY_SEC_DESC reply
197 */
198 static NTSTATUS nttrans_query_sec_desc_send(struct nttrans_op *op)
199 {
200 union smb_fileinfo *io = talloc_get_type(op->op_info, union smb_fileinfo);
201 uint8_t *params;
202 NTSTATUS status;
203 enum ndr_err_code ndr_err;
204
205 status = nttrans_setup_reply(op, op->trans, 4, 0, 0);
206 NT_STATUS_NOT_OK_RETURN(status);
207 params = op->trans->out.params.data;
208
209 ndr_err = ndr_push_struct_blob(&op->trans->out.data, op,
210 io->query_secdesc.out.sd,
211 (ndr_push_flags_fn_t)ndr_push_security_descriptor);
212 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
213 return ndr_map_error2ntstatus(ndr_err);
214 }
215
216 SIVAL(params, 0, op->trans->out.data.length);
217
218 return NT_STATUS_OK;
219 }
220
221 /*
222 parse NTTRANS_QUERY_SEC_DESC request
223 */
224 static NTSTATUS nttrans_query_sec_desc(struct smbsrv_request *req,
225 struct nttrans_op *op)
226 {
227 struct smb_nttrans *trans = op->trans;
228 union smb_fileinfo *io;
229
230 if (trans->in.params.length < 8) {
231 return NT_STATUS_INVALID_PARAMETER;
232 }
233
234 /* parse the request */
235 io = talloc(op, union smb_fileinfo);
236 NT_STATUS_HAVE_NO_MEMORY(io);
237
238 io->query_secdesc.level = RAW_FILEINFO_SEC_DESC;
239 io->query_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
240 io->query_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
241
242 op->op_info = io;
243 op->send_fn = nttrans_query_sec_desc_send;
244
245 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->query_secdesc.in.file.ntvfs);
246 return ntvfs_qfileinfo(req->ntvfs, io);
247 }
248
249
250 /*
251 parse NTTRANS_SET_SEC_DESC request
252 */
253 static NTSTATUS nttrans_set_sec_desc(struct smbsrv_request *req,
254 struct nttrans_op *op)
255 {
256 struct smb_nttrans *trans = op->trans;
257 union smb_setfileinfo *io;
258 enum ndr_err_code ndr_err;
259
260 if (trans->in.params.length < 8) {
261 return NT_STATUS_INVALID_PARAMETER;
262 }
263
264 /* parse the request */
265 io = talloc(req, union smb_setfileinfo);
266 NT_STATUS_HAVE_NO_MEMORY(io);
267
268 io->set_secdesc.level = RAW_SFILEINFO_SEC_DESC;
269 io->set_secdesc.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
270 io->set_secdesc.in.secinfo_flags = IVAL(trans->in.params.data, 4);
271
272 io->set_secdesc.in.sd = talloc(io, struct security_descriptor);
273 NT_STATUS_HAVE_NO_MEMORY(io->set_secdesc.in.sd);
274
275 ndr_err = ndr_pull_struct_blob(&trans->in.data, req,
276 io->set_secdesc.in.sd,
277 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
278 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
279 return ndr_map_error2ntstatus(ndr_err);
280 }
281
282 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->set_secdesc.in.file.ntvfs);
283 return ntvfs_setfileinfo(req->ntvfs, io);
284 }
285
286
287 /* parse NTTRANS_RENAME request
288 */
289 static NTSTATUS nttrans_rename(struct smbsrv_request *req,
290 struct nttrans_op *op)
291 {
292 struct smb_nttrans *trans = op->trans;
293 union smb_rename *io;
294
295 if (trans->in.params.length < 5) {
296 return NT_STATUS_INVALID_PARAMETER;
297 }
298
299 /* parse the request */
300 io = talloc(req, union smb_rename);
301 NT_STATUS_HAVE_NO_MEMORY(io);
302
303 io->nttrans.level = RAW_RENAME_NTTRANS;
304 io->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, trans->in.params.data, 0);
305 io->nttrans.in.flags = SVAL(trans->in.params.data, 2);
306
307 smbsrv_blob_pull_string(&req->in.bufinfo, &trans->in.params, 4,
308 &io->nttrans.in.new_name,
309 STR_TERMINATE);
310 if (!io->nttrans.in.new_name) {
311 return NT_STATUS_INVALID_PARAMETER;
312 }
313
314 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(io->nttrans.in.file.ntvfs);
315 return ntvfs_rename(req->ntvfs, io);
316 }
317
318 /*
319 parse NTTRANS_IOCTL send
320 */
321 static NTSTATUS nttrans_ioctl_send(struct nttrans_op *op)
322 {
323 union smb_ioctl *info = talloc_get_type(op->op_info, union smb_ioctl);
324 NTSTATUS status;
325
326 /*
327 * we pass 0 as data_count here,
328 * because we reuse the DATA_BLOB from the smb_ioctl
329 * struct
330 */
331 status = nttrans_setup_reply(op, op->trans, 0, 0, 1);
332 NT_STATUS_NOT_OK_RETURN(status);
333
334 op->trans->out.setup[0] = 0;
335 op->trans->out.data = info->ntioctl.out.blob;
336
337 return NT_STATUS_OK;
338 }
339
340
341 /*
342 parse NTTRANS_IOCTL request
343 */
344 static NTSTATUS nttrans_ioctl(struct smbsrv_request *req,
345 struct nttrans_op *op)
346 {
347 struct smb_nttrans *trans = op->trans;
348 union smb_ioctl *nt;
349
350 /* should have at least 4 setup words */
351 if (trans->in.setup_count != 4) {
352 return NT_STATUS_INVALID_PARAMETER;
353 }
354
355 nt = talloc(op, union smb_ioctl);
356 NT_STATUS_HAVE_NO_MEMORY(nt);
357
358 nt->ntioctl.level = RAW_IOCTL_NTIOCTL;
359 nt->ntioctl.in.function = IVAL(trans->in.setup, 0);
360 nt->ntioctl.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
361 nt->ntioctl.in.fsctl = CVAL(trans->in.setup, 6);
362 nt->ntioctl.in.filter = CVAL(trans->in.setup, 7);
363 nt->ntioctl.in.max_data = trans->in.max_data;
364 nt->ntioctl.in.blob = trans->in.data;
365
366 op->op_info = nt;
367 op->send_fn = nttrans_ioctl_send;
368
369 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(nt->ntioctl.in.file.ntvfs);
370 return ntvfs_ioctl(req->ntvfs, nt);
371 }
372
373
374 /*
375 send NTTRANS_NOTIFY_CHANGE reply
376 */
377 static NTSTATUS nttrans_notify_change_send(struct nttrans_op *op)
378 {
379 union smb_notify *info = talloc_get_type(op->op_info, union smb_notify);
380 size_t size = 0;
381 int i;
382 NTSTATUS status;
383 uint8_t *p;
384 #define MAX_BYTES_PER_CHAR 3
385
386 /* work out how big the reply buffer could be */
387 for (i=0;i<info->nttrans.out.num_changes;i++) {
388 size += 12 + 3 + (1+strlen(info->nttrans.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
389 }
390
391 status = nttrans_setup_reply(op, op->trans, size, 0, 0);
392 NT_STATUS_NOT_OK_RETURN(status);
393 p = op->trans->out.params.data;
394
395 /* construct the changes buffer */
396 for (i=0;i<info->nttrans.out.num_changes;i++) {
397 uint32_t ofs;
398 ssize_t len;
399
400 SIVAL(p, 4, info->nttrans.out.changes[i].action);
401 len = push_string(p + 12, info->nttrans.out.changes[i].name.s,
402 op->trans->out.params.length -
403 (p+12 - op->trans->out.params.data), STR_UNICODE);
404 SIVAL(p, 8, len);
405
406 ofs = len + 12;
407
408 if (ofs & 3) {
409 int pad = 4 - (ofs & 3);
410 memset(p+ofs, 0, pad);
411 ofs += pad;
412 }
413
414 if (i == info->nttrans.out.num_changes-1) {
415 SIVAL(p, 0, 0);
416 } else {
417 SIVAL(p, 0, ofs);
418 }
419
420 p += ofs;
421 }
422
423 op->trans->out.params.length = p - op->trans->out.params.data;
424
425 return NT_STATUS_OK;
426 }
427
428 /*
429 parse NTTRANS_NOTIFY_CHANGE request
430 */
431 static NTSTATUS nttrans_notify_change(struct smbsrv_request *req,
432 struct nttrans_op *op)
433 {
434 struct smb_nttrans *trans = op->trans;
435 union smb_notify *info;
436
437 /* should have at least 4 setup words */
438 if (trans->in.setup_count != 4) {
439 return NT_STATUS_INVALID_PARAMETER;
440 }
441
442 info = talloc(op, union smb_notify);
443 NT_STATUS_HAVE_NO_MEMORY(info);
444
445 info->nttrans.level = RAW_NOTIFY_NTTRANS;
446 info->nttrans.in.completion_filter = IVAL(trans->in.setup, 0);
447 info->nttrans.in.file.ntvfs = smbsrv_pull_fnum(req, (uint8_t *)trans->in.setup, 4);
448 info->nttrans.in.recursive = SVAL(trans->in.setup, 6);
449 info->nttrans.in.buffer_size = trans->in.max_param;
450
451 op->op_info = info;
452 op->send_fn = nttrans_notify_change_send;
453
454 SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(info->nttrans.in.file.ntvfs);
455 return ntvfs_notify(req->ntvfs, info);
456 }
457
458 /*
459 backend for nttrans requests
460 */
461 static NTSTATUS nttrans_backend(struct smbsrv_request *req,
462 struct nttrans_op *op)
463 {
464 /* the nttrans command is in function */
465 switch (op->trans->in.function) {
466 case NT_TRANSACT_CREATE:
467 return nttrans_create(req, op);
468 case NT_TRANSACT_IOCTL:
469 return nttrans_ioctl(req, op);
470 case NT_TRANSACT_RENAME:
471 return nttrans_rename(req, op);
472 case NT_TRANSACT_QUERY_SECURITY_DESC:
473 return nttrans_query_sec_desc(req, op);
474 case NT_TRANSACT_SET_SECURITY_DESC:
475 return nttrans_set_sec_desc(req, op);
476 case NT_TRANSACT_NOTIFY_CHANGE:
477 return nttrans_notify_change(req, op);
478 }
479
480 /* an unknown nttrans command */
481 return NT_STATUS_DOS(ERRSRV, ERRerror);
482 }
483
484
485 static void reply_nttrans_send(struct ntvfs_request *ntvfs)
486 {
487 struct smbsrv_request *req;
488 uint32_t params_left, data_left;
489 uint8_t *params, *data;
490 struct smb_nttrans *trans;
491 struct nttrans_op *op;
492
493 SMBSRV_CHECK_ASYNC_STATUS(op, struct nttrans_op);
494
495 trans = op->trans;
496
497 /* if this function needs work to form the nttrans reply buffer, then
498 call that now */
499 if (op->send_fn != NULL) {
500 NTSTATUS status;
501 status = op->send_fn(op);
502 if (!NT_STATUS_IS_OK(status)) {
503 smbsrv_send_error(req, status);
504 return;
505 }
506 }
507
508 smbsrv_setup_reply(req, 18 + trans->out.setup_count, 0);
509
510 /* note that we don't check the max_setup count (matching w2k3
511 behaviour) */
512
513 if (trans->out.params.length > trans->in.max_param) {
514 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
515 trans->out.params.length = trans->in.max_param;
516 }
517 if (trans->out.data.length > trans->in.max_data) {
518 smbsrv_setup_error(req, NT_STATUS_BUFFER_TOO_SMALL);
519 trans->out.data.length = trans->in.max_data;
520 }
521
522 params_left = trans->out.params.length;
523 data_left = trans->out.data.length;
524 params = trans->out.params.data;
525 data = trans->out.data.data;
526
527 /* we need to divide up the reply into chunks that fit into
528 the negotiated buffer size */
529 do {
530 uint32_t this_data, this_param, max_bytes;
531 unsigned int align1 = 1, align2 = (params_left ? 2 : 0);
532 struct smbsrv_request *this_req;
533
534 max_bytes = req_max_data(req) - (align1 + align2);
535
536 this_param = params_left;
537 if (this_param > max_bytes) {
538 this_param = max_bytes;
539 }
540 max_bytes -= this_param;
541
542 this_data = data_left;
543 if (this_data > max_bytes) {
544 this_data = max_bytes;
545 }
546
547 /* don't destroy unless this is the last chunk */
548 if (params_left - this_param != 0 ||
549 data_left - this_data != 0) {
550 this_req = smbsrv_setup_secondary_request(req);
551 } else {
552 this_req = req;
553 }
554
555 req_grow_data(this_req, this_param + this_data + (align1 + align2));
556
557 SSVAL(this_req->out.vwv, 0, 0); /* reserved */
558 SCVAL(this_req->out.vwv, 2, 0); /* reserved */
559 SIVAL(this_req->out.vwv, 3, trans->out.params.length);
560 SIVAL(this_req->out.vwv, 7, trans->out.data.length);
561
562 SIVAL(this_req->out.vwv, 11, this_param);
563 SIVAL(this_req->out.vwv, 15, align1 + PTR_DIFF(this_req->out.data, this_req->out.hdr));
564 SIVAL(this_req->out.vwv, 19, PTR_DIFF(params, trans->out.params.data));
565
566 SIVAL(this_req->out.vwv, 23, this_data);
567 SIVAL(this_req->out.vwv, 27, align1 + align2 +
568 PTR_DIFF(this_req->out.data + this_param, this_req->out.hdr));
569 SIVAL(this_req->out.vwv, 31, PTR_DIFF(data, trans->out.data.data));
570
571 SCVAL(this_req->out.vwv, 35, trans->out.setup_count);
572 memcpy((char *)(this_req->out.vwv) + VWV(18), trans->out.setup,
573 sizeof(uint16_t) * trans->out.setup_count);
574 memset(this_req->out.data, 0, align1);
575 if (this_param != 0) {
576 memcpy(this_req->out.data + align1, params, this_param);
577 }
578 memset(this_req->out.data+this_param+align1, 0, align2);
579 if (this_data != 0) {
580 memcpy(this_req->out.data+this_param+align1+align2,
581 data, this_data);
582 }
583
584 params_left -= this_param;
585 data_left -= this_data;
586 params += this_param;
587 data += this_data;
588
589 smbsrv_send_reply(this_req);
590 } while (params_left != 0 || data_left != 0);
591 }
592
593 /*
594 send a continue request
595 */
596 static void reply_nttrans_continue(struct smbsrv_request *req, struct smb_nttrans *trans)
597 {
598 struct smbsrv_request *req2;
599 struct smbsrv_trans_partial *tp;
600 int count;
601
602 /* make sure they don't flood us */
603 for (count=0,tp=req->smb_conn->trans_partial;tp;tp=tp->next) count++;
604 if (count > 100) {
605 smbsrv_send_error(req, NT_STATUS_INSUFFICIENT_RESOURCES);
606 return;
607 }
608
609 tp = talloc(req, struct smbsrv_trans_partial);
610
611 tp->req = req;
612 tp->u.nttrans = trans;
613 tp->command = SMBnttrans;
614
615 DLIST_ADD(req->smb_conn->trans_partial, tp);
616 talloc_set_destructor(tp, smbsrv_trans_partial_destructor);
617
618 req2 = smbsrv_setup_secondary_request(req);
619
620 /* send a 'please continue' reply */
621 smbsrv_setup_reply(req2, 0, 0);
622 smbsrv_send_reply(req2);
623 }
624
625
626 /*
627 answer a reconstructed trans request
628 */
629 static void reply_nttrans_complete(struct smbsrv_request *req, struct smb_nttrans *trans)
630 {
631 struct nttrans_op *op;
632
633 SMBSRV_TALLOC_IO_PTR(op, struct nttrans_op);
634 SMBSRV_SETUP_NTVFS_REQUEST(reply_nttrans_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
635
636 op->trans = trans;
637 op->op_info = NULL;
638 op->send_fn = NULL;
639
640 /* its a full request, give it to the backend */
641 ZERO_STRUCT(trans->out);
642 SMBSRV_CALL_NTVFS_BACKEND(nttrans_backend(req, op));
643 }
644
645
646 /****************************************************************************
647 Reply to an SMBnttrans request
648 ****************************************************************************/
649 void smbsrv_reply_nttrans(struct smbsrv_request *req)
650 {
651 struct smb_nttrans *trans;
652 uint32_t param_ofs, data_ofs;
653 uint32_t param_count, data_count;
654 uint32_t param_total, data_total;
655
656 /* parse request */
657 if (req->in.wct < 19) {
658 smbsrv_send_error(req, NT_STATUS_FOOBAR);
659 return;
660 }
661
662 trans = talloc(req, struct smb_nttrans);
663 if (trans == NULL) {
664 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
665 return;
666 }
667
668 trans->in.max_setup = CVAL(req->in.vwv, 0);
669 param_total = IVAL(req->in.vwv, 3);
670 data_total = IVAL(req->in.vwv, 7);
671 trans->in.max_param = IVAL(req->in.vwv, 11);
672 trans->in.max_data = IVAL(req->in.vwv, 15);
673 param_count = IVAL(req->in.vwv, 19);
674 param_ofs = IVAL(req->in.vwv, 23);
675 data_count = IVAL(req->in.vwv, 27);
676 data_ofs = IVAL(req->in.vwv, 31);
677 trans->in.setup_count= CVAL(req->in.vwv, 35);
678 trans->in.function = SVAL(req->in.vwv, 36);
679
680 if (req->in.wct != 19 + trans->in.setup_count) {
681 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
682 return;
683 }
684
685 /* parse out the setup words */
686 trans->in.setup = talloc_array(req, uint8_t, trans->in.setup_count*2);
687 if (!trans->in.setup) {
688 smbsrv_send_error(req, NT_STATUS_NO_MEMORY);
689 return;
690 }
691 memcpy(trans->in.setup, (char *)(req->in.vwv) + VWV(19),
692 sizeof(uint16_t) * trans->in.setup_count);
693
694 if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, &trans->in.params) ||
695 !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &trans->in.data)) {
696 smbsrv_send_error(req, NT_STATUS_FOOBAR);
697 return;
698 }
699
700 /* is it a partial request? if so, then send a 'send more' message */
701 if (param_total > param_count || data_total > data_count) {
702 reply_nttrans_continue(req, trans);
703 return;
704 }
705
706 reply_nttrans_complete(req, trans);
707 }
708
709
710 /****************************************************************************
711 Reply to an SMBnttranss request
712 ****************************************************************************/
713 void smbsrv_reply_nttranss(struct smbsrv_request *req)
714 {
715 struct smbsrv_trans_partial *tp;
716 struct smb_nttrans *trans = NULL;
717 uint32_t param_ofs, data_ofs;
718 uint32_t param_count, data_count;
719 uint32_t param_disp, data_disp;
720 uint32_t param_total, data_total;
721 DATA_BLOB params, data;
722
723 /* parse request */
724 if (req->in.wct != 18) {
725 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror));
726 return;
727 }
728
729 for (tp=req->smb_conn->trans_partial;tp;tp=tp->next) {
730 if (tp->command == SMBnttrans &&
731 SVAL(tp->req->in.hdr, HDR_MID) == SVAL(req->in.hdr, HDR_MID)) {
732 /* TODO: check the VUID, PID and TID too? */
733 break;
734 }
735 }
736
737 if (tp == NULL) {
738 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
739 return;
740 }
741
742 trans = tp->u.nttrans;
743
744 param_total = IVAL(req->in.vwv, 3);
745 data_total = IVAL(req->in.vwv, 7);
746 param_count = IVAL(req->in.vwv, 11);
747 param_ofs = IVAL(req->in.vwv, 15);
748 param_disp = IVAL(req->in.vwv, 19);
749 data_count = IVAL(req->in.vwv, 23);
750 data_ofs = IVAL(req->in.vwv, 27);
751 data_disp = IVAL(req->in.vwv, 31);
752
753 if (!req_pull_blob(&req->in.bufinfo, req->in.hdr + param_ofs, param_count, &params) ||
754 !req_pull_blob(&req->in.bufinfo, req->in.hdr + data_ofs, data_count, &data)) {
755 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
756 return;
757 }
758
759 /* only allow contiguous requests */
760 if ((param_count != 0 &&
761 param_disp != trans->in.params.length) ||
762 (data_count != 0 &&
763 data_disp != trans->in.data.length)) {
764 smbsrv_send_error(req, NT_STATUS_INVALID_PARAMETER);
765 return;
766 }
767
768 /* add to the existing request */
769 if (param_count != 0) {
770 trans->in.params.data = talloc_realloc(trans,
771 trans->in.params.data,
772 uint8_t,
773 param_disp + param_count);
774 if (trans->in.params.data == NULL) {
775 smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY);
776 return;
777 }
778 trans->in.params.length = param_disp + param_count;
779 }
780
781 if (data_count != 0) {
782 trans->in.data.data = talloc_realloc(trans,
783 trans->in.data.data,
784 uint8_t,
785 data_disp + data_count);
786 if (trans->in.data.data == NULL) {
787 smbsrv_send_error(tp->req, NT_STATUS_NO_MEMORY);
788 return;
789 }
790 trans->in.data.length = data_disp + data_count;
791 }
792
793 memcpy(trans->in.params.data + param_disp, params.data, params.length);
794 memcpy(trans->in.data.data + data_disp, data.data, data.length);
795
796 /* the sequence number of the reply is taken from the last secondary
797 response */
798 tp->req->seq_num = req->seq_num;
799
800 /* we don't reply to Transs2 requests */
801 talloc_free(req);
802
803 if (trans->in.params.length == param_total &&
804 trans->in.data.length == data_total) {
805 /* its now complete */
806 req = tp->req;
807 talloc_free(tp);
808 reply_nttrans_complete(req, trans);
809 }
810 return;
811 }
WIP