source: trunk/server/source3/libsmb/clitrans.c@ 745

Last change on this file since 745 was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 20.4 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 client transaction calls
4 Copyright (C) Andrew Tridgell 1994-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19
20#include "includes.h"
21#include "libsmb/libsmb.h"
22#include "../lib/util/tevent_ntstatus.h"
23#include "async_smb.h"
24
25struct trans_recvblob {
26 uint8_t *data;
27 uint32_t max, total, received;
28};
29
30struct cli_trans_state {
31 struct cli_state *cli;
32 struct event_context *ev;
33 uint8_t cmd;
34 uint16_t mid;
35 const char *pipe_name;
36 uint8_t *pipe_name_conv;
37 size_t pipe_name_conv_len;
38 uint16_t fid;
39 uint16_t function;
40 int flags;
41 uint16_t *setup;
42 uint8_t num_setup, max_setup;
43 uint8_t *param;
44 uint32_t num_param, param_sent;
45 uint8_t *data;
46 uint32_t num_data, data_sent;
47
48 uint8_t num_rsetup;
49 uint16_t *rsetup;
50 struct trans_recvblob rparam;
51 struct trans_recvblob rdata;
52 uint16_t recv_flags2;
53
54 struct iovec iov[6];
55 uint8_t pad[4];
56 uint8_t zero_pad[4];
57 uint16_t vwv[32];
58
59 struct tevent_req *primary_subreq;
60};
61
62static void cli_trans_cleanup_primary(struct cli_trans_state *state)
63{
64 if (state->primary_subreq) {
65 cli_smb_req_set_mid(state->primary_subreq, 0);
66 cli_smb_req_unset_pending(state->primary_subreq);
67 TALLOC_FREE(state->primary_subreq);
68 }
69}
70
71static int cli_trans_state_destructor(struct cli_trans_state *state)
72{
73 cli_trans_cleanup_primary(state);
74 return 0;
75}
76
77static NTSTATUS cli_pull_trans(uint8_t *inbuf,
78 uint8_t wct, uint16_t *vwv,
79 uint16_t num_bytes, uint8_t *bytes,
80 uint8_t smb_cmd, bool expect_first_reply,
81 uint8_t *pnum_setup, uint16_t **psetup,
82 uint32_t *ptotal_param, uint32_t *pnum_param,
83 uint32_t *pparam_disp, uint8_t **pparam,
84 uint32_t *ptotal_data, uint32_t *pnum_data,
85 uint32_t *pdata_disp, uint8_t **pdata)
86{
87 uint32_t param_ofs, data_ofs;
88
89 if (expect_first_reply) {
90 if ((wct != 0) || (num_bytes != 0)) {
91 return NT_STATUS_INVALID_NETWORK_RESPONSE;
92 }
93 return NT_STATUS_OK;
94 }
95
96 switch (smb_cmd) {
97 case SMBtrans:
98 case SMBtrans2:
99 if (wct < 10) {
100 return NT_STATUS_INVALID_NETWORK_RESPONSE;
101 }
102 *ptotal_param = SVAL(vwv + 0, 0);
103 *ptotal_data = SVAL(vwv + 1, 0);
104 *pnum_param = SVAL(vwv + 3, 0);
105 param_ofs = SVAL(vwv + 4, 0);
106 *pparam_disp = SVAL(vwv + 5, 0);
107 *pnum_data = SVAL(vwv + 6, 0);
108 data_ofs = SVAL(vwv + 7, 0);
109 *pdata_disp = SVAL(vwv + 8, 0);
110 *pnum_setup = CVAL(vwv + 9, 0);
111 if (wct < 10 + (*pnum_setup)) {
112 return NT_STATUS_INVALID_NETWORK_RESPONSE;
113 }
114 *psetup = vwv + 10;
115
116 break;
117 case SMBnttrans:
118 if (wct < 18) {
119 return NT_STATUS_INVALID_NETWORK_RESPONSE;
120 }
121 *ptotal_param = IVAL(vwv, 3);
122 *ptotal_data = IVAL(vwv, 7);
123 *pnum_param = IVAL(vwv, 11);
124 param_ofs = IVAL(vwv, 15);
125 *pparam_disp = IVAL(vwv, 19);
126 *pnum_data = IVAL(vwv, 23);
127 data_ofs = IVAL(vwv, 27);
128 *pdata_disp = IVAL(vwv, 31);
129 *pnum_setup = CVAL(vwv, 35);
130 *psetup = vwv + 18;
131 break;
132
133 default:
134 return NT_STATUS_INTERNAL_ERROR;
135 }
136
137 /*
138 * Check for buffer overflows. data_ofs needs to be checked against
139 * the incoming buffer length, data_disp against the total
140 * length. Likewise for param_ofs/param_disp.
141 */
142
143 if (trans_oob(smb_len(inbuf), param_ofs, *pnum_param)
144 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
145 || trans_oob(smb_len(inbuf), data_ofs, *pnum_data)
146 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
147 return NT_STATUS_INVALID_NETWORK_RESPONSE;
148 }
149
150 *pparam = (uint8_t *)inbuf + 4 + param_ofs;
151 *pdata = (uint8_t *)inbuf + 4 + data_ofs;
152
153 return NT_STATUS_OK;
154}
155
156static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
157 struct trans_recvblob *blob,
158 uint32_t total, uint32_t thistime,
159 uint8_t *buf, uint32_t displacement)
160{
161 if (blob->data == NULL) {
162 if (total > blob->max) {
163 return NT_STATUS_INVALID_NETWORK_RESPONSE;
164 }
165 blob->total = total;
166 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
167 if (blob->data == NULL) {
168 return NT_STATUS_NO_MEMORY;
169 }
170 }
171
172 if (total > blob->total) {
173 return NT_STATUS_INVALID_NETWORK_RESPONSE;
174 }
175
176 if (thistime) {
177 memcpy(blob->data + displacement, buf, thistime);
178 blob->received += thistime;
179 }
180
181 return NT_STATUS_OK;
182}
183
184static void cli_trans_format(struct cli_trans_state *state, uint8_t *pwct,
185 int *piov_count)
186{
187 uint8_t wct = 0;
188 struct iovec *iov = state->iov;
189 uint8_t *pad = state->pad;
190 uint16_t *vwv = state->vwv;
191 uint32_t param_offset;
192 uint32_t this_param = 0;
193 uint32_t param_pad;
194 uint32_t data_offset;
195 uint32_t this_data = 0;
196 uint32_t data_pad;
197 uint32_t useable_space;
198 uint8_t cmd;
199
200 cmd = state->cmd;
201
202 if ((state->param_sent != 0) || (state->data_sent != 0)) {
203 /* The secondary commands are one after the primary ones */
204 cmd += 1;
205 }
206
207 param_offset = smb_size - 4;
208
209 switch (cmd) {
210 case SMBtrans:
211 pad[0] = 0;
212 iov[0].iov_base = (void *)pad;
213 iov[0].iov_len = 1;
214 iov[1].iov_base = (void *)state->pipe_name_conv;
215 iov[1].iov_len = state->pipe_name_conv_len;
216 wct = 14 + state->num_setup;
217 param_offset += iov[0].iov_len + iov[1].iov_len;
218 iov += 2;
219 break;
220 case SMBtrans2:
221 pad[0] = 0;
222 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
223 pad[2] = ' ';
224 iov[0].iov_base = (void *)pad;
225 iov[0].iov_len = 3;
226 wct = 14 + state->num_setup;
227 param_offset += 3;
228 iov += 1;
229 break;
230 case SMBtranss:
231 wct = 8;
232 break;
233 case SMBtranss2:
234 wct = 9;
235 break;
236 case SMBnttrans:
237 wct = 19 + state->num_setup;
238 break;
239 case SMBnttranss:
240 wct = 18;
241 break;
242 }
243
244 param_offset += wct * sizeof(uint16_t);
245 useable_space = state->cli->max_xmit - param_offset;
246
247 param_pad = param_offset % 4;
248 if (param_pad > 0) {
249 param_pad = MIN(param_pad, useable_space);
250 iov[0].iov_base = (void *)state->zero_pad;
251 iov[0].iov_len = param_pad;
252 iov += 1;
253 param_offset += param_pad;
254 }
255 useable_space = state->cli->max_xmit - param_offset;
256
257 if (state->param_sent < state->num_param) {
258 this_param = MIN(state->num_param - state->param_sent,
259 useable_space);
260 iov[0].iov_base = (void *)(state->param + state->param_sent);
261 iov[0].iov_len = this_param;
262 iov += 1;
263 }
264
265 data_offset = param_offset + this_param;
266 useable_space = state->cli->max_xmit - data_offset;
267
268 data_pad = data_offset % 4;
269 if (data_pad > 0) {
270 data_pad = MIN(data_pad, useable_space);
271 iov[0].iov_base = (void *)state->zero_pad;
272 iov[0].iov_len = data_pad;
273 iov += 1;
274 data_offset += data_pad;
275 }
276 useable_space = state->cli->max_xmit - data_offset;
277
278 if (state->data_sent < state->num_data) {
279 this_data = MIN(state->num_data - state->data_sent,
280 useable_space);
281 iov[0].iov_base = (void *)(state->data + state->data_sent);
282 iov[0].iov_len = this_data;
283 iov += 1;
284 }
285
286 DEBUG(10, ("num_setup=%u, max_setup=%u, "
287 "param_total=%u, this_param=%u, max_param=%u, "
288 "data_total=%u, this_data=%u, max_data=%u, "
289 "param_offset=%u, param_pad=%u, param_disp=%u, "
290 "data_offset=%u, data_pad=%u, data_disp=%u\n",
291 (unsigned)state->num_setup, (unsigned)state->max_setup,
292 (unsigned)state->num_param, (unsigned)this_param,
293 (unsigned)state->rparam.max,
294 (unsigned)state->num_data, (unsigned)this_data,
295 (unsigned)state->rdata.max,
296 (unsigned)param_offset, (unsigned)param_pad,
297 (unsigned)state->param_sent,
298 (unsigned)data_offset, (unsigned)data_pad,
299 (unsigned)state->data_sent));
300
301 switch (cmd) {
302 case SMBtrans:
303 case SMBtrans2:
304 SSVAL(vwv + 0, 0, state->num_param);
305 SSVAL(vwv + 1, 0, state->num_data);
306 SSVAL(vwv + 2, 0, state->rparam.max);
307 SSVAL(vwv + 3, 0, state->rdata.max);
308 SCVAL(vwv + 4, 0, state->max_setup);
309 SCVAL(vwv + 4, 1, 0); /* reserved */
310 SSVAL(vwv + 5, 0, state->flags);
311 SIVAL(vwv + 6, 0, 0); /* timeout */
312 SSVAL(vwv + 8, 0, 0); /* reserved */
313 SSVAL(vwv + 9, 0, this_param);
314 SSVAL(vwv +10, 0, param_offset);
315 SSVAL(vwv +11, 0, this_data);
316 SSVAL(vwv +12, 0, data_offset);
317 SCVAL(vwv +13, 0, state->num_setup);
318 SCVAL(vwv +13, 1, 0); /* reserved */
319 memcpy(vwv + 14, state->setup,
320 sizeof(uint16_t) * state->num_setup);
321 break;
322 case SMBtranss:
323 case SMBtranss2:
324 SSVAL(vwv + 0, 0, state->num_param);
325 SSVAL(vwv + 1, 0, state->num_data);
326 SSVAL(vwv + 2, 0, this_param);
327 SSVAL(vwv + 3, 0, param_offset);
328 SSVAL(vwv + 4, 0, state->param_sent);
329 SSVAL(vwv + 5, 0, this_data);
330 SSVAL(vwv + 6, 0, data_offset);
331 SSVAL(vwv + 7, 0, state->data_sent);
332 if (cmd == SMBtranss2) {
333 SSVAL(vwv + 8, 0, state->fid);
334 }
335 break;
336 case SMBnttrans:
337 SCVAL(vwv + 0, 0, state->max_setup);
338 SSVAL(vwv + 0, 1, 0); /* reserved */
339 SIVAL(vwv + 1, 1, state->num_param);
340 SIVAL(vwv + 3, 1, state->num_data);
341 SIVAL(vwv + 5, 1, state->rparam.max);
342 SIVAL(vwv + 7, 1, state->rdata.max);
343 SIVAL(vwv + 9, 1, this_param);
344 SIVAL(vwv +11, 1, param_offset);
345 SIVAL(vwv +13, 1, this_data);
346 SIVAL(vwv +15, 1, data_offset);
347 SCVAL(vwv +17, 1, state->num_setup);
348 SSVAL(vwv +18, 0, state->function);
349 memcpy(vwv + 19, state->setup,
350 sizeof(uint16_t) * state->num_setup);
351 break;
352 case SMBnttranss:
353 SSVAL(vwv + 0, 0, 0); /* reserved */
354 SCVAL(vwv + 1, 0, 0); /* reserved */
355 SIVAL(vwv + 1, 1, state->num_param);
356 SIVAL(vwv + 3, 1, state->num_data);
357 SIVAL(vwv + 5, 1, this_param);
358 SIVAL(vwv + 7, 1, param_offset);
359 SIVAL(vwv + 9, 1, state->param_sent);
360 SIVAL(vwv +11, 1, this_data);
361 SIVAL(vwv +13, 1, data_offset);
362 SIVAL(vwv +15, 1, state->data_sent);
363 SCVAL(vwv +17, 1, 0); /* reserved */
364 break;
365 }
366
367 state->param_sent += this_param;
368 state->data_sent += this_data;
369
370 *pwct = wct;
371 *piov_count = iov - state->iov;
372}
373
374static void cli_trans_done(struct tevent_req *subreq);
375
376struct tevent_req *cli_trans_send(
377 TALLOC_CTX *mem_ctx, struct event_context *ev,
378 struct cli_state *cli, uint8_t cmd,
379 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
380 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
381 uint8_t *param, uint32_t num_param, uint32_t max_param,
382 uint8_t *data, uint32_t num_data, uint32_t max_data)
383{
384 struct tevent_req *req, *subreq;
385 struct cli_trans_state *state;
386 int iov_count;
387 uint8_t wct;
388 NTSTATUS status;
389
390 req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
391 if (req == NULL) {
392 return NULL;
393 }
394
395 if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
396 if ((num_param > 0xffff) || (max_param > 0xffff)
397 || (num_data > 0xffff) || (max_data > 0xffff)) {
398 DEBUG(3, ("Attempt to send invalid trans2 request "
399 "(setup %u, params %u/%u, data %u/%u)\n",
400 (unsigned)num_setup,
401 (unsigned)num_param, (unsigned)max_param,
402 (unsigned)num_data, (unsigned)max_data));
403 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
404 return tevent_req_post(req, ev);
405 }
406 }
407
408 /*
409 * The largest wct will be for nttrans (19+num_setup). Make sure we
410 * don't overflow state->vwv in cli_trans_format.
411 */
412
413 if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
414 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
415 return tevent_req_post(req, ev);
416 }
417
418 state->cli = cli;
419 state->ev = ev;
420 state->cmd = cmd;
421 state->flags = flags;
422 state->num_rsetup = 0;
423 state->rsetup = NULL;
424 ZERO_STRUCT(state->rparam);
425 ZERO_STRUCT(state->rdata);
426
427 if ((pipe_name != NULL)
428 && (!convert_string_talloc(state, CH_UNIX,
429 cli_ucs2(cli) ? CH_UTF16LE : CH_DOS,
430 pipe_name, strlen(pipe_name) + 1,
431 &state->pipe_name_conv,
432 &state->pipe_name_conv_len, true))) {
433 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
434 return tevent_req_post(req, ev);
435 }
436 state->fid = fid; /* trans2 */
437 state->function = function; /* nttrans */
438
439 state->setup = setup;
440 state->num_setup = num_setup;
441 state->max_setup = max_setup;
442
443 state->param = param;
444 state->num_param = num_param;
445 state->param_sent = 0;
446 state->rparam.max = max_param;
447
448 state->data = data;
449 state->num_data = num_data;
450 state->data_sent = 0;
451 state->rdata.max = max_data;
452
453 cli_trans_format(state, &wct, &iov_count);
454
455 subreq = cli_smb_req_create(state, ev, cli, cmd, 0, wct, state->vwv,
456 iov_count, state->iov);
457 if (tevent_req_nomem(subreq, req)) {
458 return tevent_req_post(req, ev);
459 }
460 status = cli_smb_req_send(subreq);
461 if (!NT_STATUS_IS_OK(status)) {
462 tevent_req_nterror(req, status);
463 return tevent_req_post(req, state->ev);
464 }
465 tevent_req_set_callback(subreq, cli_trans_done, req);
466
467 /*
468 * Now get the MID of the primary request
469 * and mark it as persistent. This means
470 * we will able to send and receive multiple
471 * SMB pdus using this MID in both directions
472 * (including correct SMB signing).
473 */
474 state->mid = cli_smb_req_mid(subreq);
475 cli_smb_req_set_mid(subreq, state->mid);
476 state->primary_subreq = subreq;
477 talloc_set_destructor(state, cli_trans_state_destructor);
478
479 return req;
480}
481
482static void cli_trans_done2(struct tevent_req *subreq);
483
484static void cli_trans_done(struct tevent_req *subreq)
485{
486 struct tevent_req *req = tevent_req_callback_data(
487 subreq, struct tevent_req);
488 struct cli_trans_state *state = tevent_req_data(
489 req, struct cli_trans_state);
490 NTSTATUS status;
491 bool sent_all;
492 uint8_t wct;
493 uint16_t *vwv;
494 uint32_t num_bytes;
495 uint8_t *bytes;
496 uint8_t *inbuf;
497 uint8_t num_setup = 0;
498 uint16_t *setup = NULL;
499 uint32_t total_param = 0;
500 uint32_t num_param = 0;
501 uint32_t param_disp = 0;
502 uint32_t total_data = 0;
503 uint32_t num_data = 0;
504 uint32_t data_disp = 0;
505 uint8_t *param = NULL;
506 uint8_t *data = NULL;
507
508 status = cli_smb_recv(subreq, state, &inbuf, 0, &wct, &vwv,
509 &num_bytes, &bytes);
510 /*
511 * Do not TALLOC_FREE(subreq) here, we might receive more than
512 * one response for the same mid.
513 */
514
515 /*
516 * We can receive something like STATUS_MORE_ENTRIES, so don't use
517 * !NT_STATUS_IS_OK(status) here.
518 */
519
520 if (NT_STATUS_IS_ERR(status)) {
521 goto fail;
522 }
523
524 sent_all = ((state->param_sent == state->num_param)
525 && (state->data_sent == state->num_data));
526
527 status = cli_pull_trans(
528 inbuf, wct, vwv, num_bytes, bytes,
529 state->cmd, !sent_all, &num_setup, &setup,
530 &total_param, &num_param, &param_disp, &param,
531 &total_data, &num_data, &data_disp, &data);
532
533 if (!NT_STATUS_IS_OK(status)) {
534 goto fail;
535 }
536
537 if (!sent_all) {
538 int iov_count;
539 struct tevent_req *subreq2;
540
541 cli_trans_format(state, &wct, &iov_count);
542
543 subreq2 = cli_smb_req_create(state, state->ev, state->cli,
544 state->cmd + 1, 0, wct, state->vwv,
545 iov_count, state->iov);
546 if (tevent_req_nomem(subreq2, req)) {
547 return;
548 }
549 cli_smb_req_set_mid(subreq2, state->mid);
550
551 status = cli_smb_req_send(subreq2);
552
553 if (!NT_STATUS_IS_OK(status)) {
554 goto fail;
555 }
556 tevent_req_set_callback(subreq2, cli_trans_done2, req);
557
558 return;
559 }
560
561 status = cli_trans_pull_blob(
562 state, &state->rparam, total_param, num_param, param,
563 param_disp);
564
565 if (!NT_STATUS_IS_OK(status)) {
566 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
567 goto fail;
568 }
569
570 status = cli_trans_pull_blob(
571 state, &state->rdata, total_data, num_data, data,
572 data_disp);
573
574 if (!NT_STATUS_IS_OK(status)) {
575 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
576 goto fail;
577 }
578
579 if ((state->rparam.total == state->rparam.received)
580 && (state->rdata.total == state->rdata.received)) {
581 state->recv_flags2 = SVAL(inbuf, smb_flg2);
582 cli_trans_cleanup_primary(state);
583 tevent_req_done(req);
584 return;
585 }
586
587 TALLOC_FREE(inbuf);
588
589 return;
590
591 fail:
592 cli_trans_cleanup_primary(state);
593 tevent_req_nterror(req, status);
594}
595
596static void cli_trans_done2(struct tevent_req *subreq2)
597{
598 struct tevent_req *req = tevent_req_callback_data(
599 subreq2, struct tevent_req);
600 struct cli_trans_state *state = tevent_req_data(
601 req, struct cli_trans_state);
602 NTSTATUS status;
603 bool sent_all;
604 uint8_t wct;
605 uint32_t seqnum;
606
607 /*
608 * First backup the seqnum of the secondary request
609 * and attach it to the primary request.
610 */
611 seqnum = cli_smb_req_seqnum(subreq2);
612 cli_smb_req_set_seqnum(state->primary_subreq, seqnum);
613
614 status = cli_smb_recv(subreq2, state, NULL, 0, &wct, NULL,
615 NULL, NULL);
616 TALLOC_FREE(subreq2);
617
618 if (!NT_STATUS_IS_OK(status)) {
619 goto fail;
620 }
621
622 if (wct != 0) {
623 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
624 goto fail;
625 }
626
627 sent_all = ((state->param_sent == state->num_param)
628 && (state->data_sent == state->num_data));
629
630 if (!sent_all) {
631 int iov_count;
632
633 cli_trans_format(state, &wct, &iov_count);
634
635 subreq2 = cli_smb_req_create(state, state->ev, state->cli,
636 state->cmd + 1, 0, wct, state->vwv,
637 iov_count, state->iov);
638 if (tevent_req_nomem(subreq2, req)) {
639 return;
640 }
641 cli_smb_req_set_mid(subreq2, state->mid);
642
643 status = cli_smb_req_send(subreq2);
644
645 if (!NT_STATUS_IS_OK(status)) {
646 goto fail;
647 }
648 tevent_req_set_callback(subreq2, cli_trans_done2, req);
649 return;
650 }
651
652 return;
653
654 fail:
655 cli_trans_cleanup_primary(state);
656 tevent_req_nterror(req, status);
657}
658
659NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
660 uint16_t *recv_flags2,
661 uint16_t **setup, uint8_t min_setup,
662 uint8_t *num_setup,
663 uint8_t **param, uint32_t min_param,
664 uint32_t *num_param,
665 uint8_t **data, uint32_t min_data,
666 uint32_t *num_data)
667{
668 struct cli_trans_state *state = tevent_req_data(
669 req, struct cli_trans_state);
670 NTSTATUS status;
671
672 cli_trans_cleanup_primary(state);
673
674 if (tevent_req_is_nterror(req, &status)) {
675 return status;
676 }
677
678 if ((state->num_rsetup < min_setup)
679 || (state->rparam.total < min_param)
680 || (state->rdata.total < min_data)) {
681 return NT_STATUS_INVALID_NETWORK_RESPONSE;
682 }
683
684 if (recv_flags2 != NULL) {
685 *recv_flags2 = state->recv_flags2;
686 }
687
688 if (setup != NULL) {
689 *setup = talloc_move(mem_ctx, &state->rsetup);
690 *num_setup = state->num_rsetup;
691 } else {
692 TALLOC_FREE(state->rsetup);
693 }
694
695 if (param != NULL) {
696 *param = talloc_move(mem_ctx, &state->rparam.data);
697 *num_param = state->rparam.total;
698 } else {
699 TALLOC_FREE(state->rparam.data);
700 }
701
702 if (data != NULL) {
703 *data = talloc_move(mem_ctx, &state->rdata.data);
704 *num_data = state->rdata.total;
705 } else {
706 TALLOC_FREE(state->rdata.data);
707 }
708
709 return NT_STATUS_OK;
710}
711
712NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
713 uint8_t trans_cmd,
714 const char *pipe_name, uint16_t fid, uint16_t function,
715 int flags,
716 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
717 uint8_t *param, uint32_t num_param, uint32_t max_param,
718 uint8_t *data, uint32_t num_data, uint32_t max_data,
719 uint16_t *recv_flags2,
720 uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
721 uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
722 uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
723{
724 TALLOC_CTX *frame = talloc_stackframe();
725 struct event_context *ev;
726 struct tevent_req *req;
727 NTSTATUS status = NT_STATUS_OK;
728
729 if (cli_has_async_calls(cli)) {
730 /*
731 * Can't use sync call while an async call is in flight
732 */
733 status = NT_STATUS_INVALID_PARAMETER;
734 goto fail;
735 }
736
737 ev = event_context_init(frame);
738 if (ev == NULL) {
739 status = NT_STATUS_NO_MEMORY;
740 goto fail;
741 }
742
743 req = cli_trans_send(frame, ev, cli, trans_cmd,
744 pipe_name, fid, function, flags,
745 setup, num_setup, max_setup,
746 param, num_param, max_param,
747 data, num_data, max_data);
748 if (req == NULL) {
749 status = NT_STATUS_NO_MEMORY;
750 goto fail;
751 }
752
753 if (!tevent_req_poll(req, ev)) {
754 status = map_nt_error_from_unix(errno);
755 goto fail;
756 }
757
758 status = cli_trans_recv(req, mem_ctx, recv_flags2,
759 rsetup, min_rsetup, num_rsetup,
760 rparam, min_rparam, num_rparam,
761 rdata, min_rdata, num_rdata);
762 fail:
763 TALLOC_FREE(frame);
764 if (!NT_STATUS_IS_OK(status)) {
765 cli_set_error(cli, status);
766 }
767 return status;
768}
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