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WHATSNEW: Update changed parameters.
[Samba/gbeck.git] / source3 / libsmb / clitrans.c
blob4379e1480a8dda766e17f621fe5af28b85df5940
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 "async_smb.h"
22
23 /****************************************************************************
24 Send a SMB trans or trans2 request.
25 ****************************************************************************/
26
27 bool cli_send_trans(struct cli_state *cli, int trans,
28 const char *pipe_name,
29 int fid, int flags,
30 uint16 *setup, unsigned int lsetup, unsigned int msetup,
31 const char *param, unsigned int lparam, unsigned int mparam,
32 const char *data, unsigned int ldata, unsigned int mdata)
33 {
34 unsigned int i;
35 unsigned int this_ldata,this_lparam;
36 unsigned int tot_data=0,tot_param=0;
37 char *outdata,*outparam;
38 char *p;
39 int pipe_name_len=0;
40 uint16 mid;
41
42 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
43 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
44
45 memset(cli->outbuf,'\0',smb_size);
46 cli_set_message(cli->outbuf,14+lsetup,0,True);
47 SCVAL(cli->outbuf,smb_com,trans);
48 SSVAL(cli->outbuf,smb_tid, cli->cnum);
49 cli_setup_packet(cli);
50
51 /*
52 * Save the mid we're using. We need this for finding
53 * signing replies.
54 */
55
56 mid = cli->mid;
57
58 if (pipe_name) {
59 pipe_name_len = clistr_push(cli, smb_buf(cli->outbuf), pipe_name, -1, STR_TERMINATE);
60 }
61
62 outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len : 3);
63 outdata = outparam+this_lparam;
64
65 /* primary request */
66 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
67 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
68 SSVAL(cli->outbuf,smb_mprcnt,mparam); /* mprcnt */
69 SSVAL(cli->outbuf,smb_mdrcnt,mdata); /* mdrcnt */
70 SCVAL(cli->outbuf,smb_msrcnt,msetup); /* msrcnt */
71 SSVAL(cli->outbuf,smb_flags,flags); /* flags */
72 SIVAL(cli->outbuf,smb_timeout,0); /* timeout */
73 SSVAL(cli->outbuf,smb_pscnt,this_lparam); /* pscnt */
74 SSVAL(cli->outbuf,smb_psoff,smb_offset(outparam,cli->outbuf)); /* psoff */
75 SSVAL(cli->outbuf,smb_dscnt,this_ldata); /* dscnt */
76 SSVAL(cli->outbuf,smb_dsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
77 SCVAL(cli->outbuf,smb_suwcnt,lsetup); /* suwcnt */
78 for (i=0;i<lsetup;i++) /* setup[] */
79 SSVAL(cli->outbuf,smb_setup+i*2,setup[i]);
80 p = smb_buf(cli->outbuf);
81 if (trans != SMBtrans) {
82 *p++ = 0; /* put in a null smb_name */
83 *p++ = 'D'; *p++ = ' '; /* observed in OS/2 */
84 }
85 if (this_lparam) /* param[] */
86 memcpy(outparam,param,this_lparam);
87 if (this_ldata) /* data[] */
88 memcpy(outdata,data,this_ldata);
89 cli_setup_bcc(cli, outdata+this_ldata);
90
91 show_msg(cli->outbuf);
92
93 if (!cli_send_smb(cli)) {
94 return False;
95 }
96
97 cli_state_seqnum_persistent(cli, mid);
98
99 if (this_ldata < ldata || this_lparam < lparam) {
100 /* receive interim response */
101 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
102 cli_state_seqnum_remove(cli, mid);
103 return(False);
104 }
105
106 tot_data = this_ldata;
107 tot_param = this_lparam;
108
109 while (tot_data < ldata || tot_param < lparam) {
110 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
111 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
112
113 cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
114 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
115
116 outparam = smb_buf(cli->outbuf);
117 outdata = outparam+this_lparam;
118
119 /* secondary request */
120 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
121 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
122 SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
123 SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
124 SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
125 SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
126 SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
127 SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
128 if (trans==SMBtrans2)
129 SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
130 if (this_lparam) /* param[] */
131 memcpy(outparam,param+tot_param,this_lparam);
132 if (this_ldata) /* data[] */
133 memcpy(outdata,data+tot_data,this_ldata);
134 cli_setup_bcc(cli, outdata+this_ldata);
135
136 show_msg(cli->outbuf);
137
138 cli->mid = mid;
139 if (!cli_send_smb(cli)) {
140 cli_state_seqnum_remove(cli, mid);
141 return False;
142 }
143
144 tot_data += this_ldata;
145 tot_param += this_lparam;
146 }
147 }
148
149 return(True);
150 }
151
152 /****************************************************************************
153 Receive a SMB trans or trans2 response allocating the necessary memory.
154 ****************************************************************************/
155
156 bool cli_receive_trans(struct cli_state *cli,int trans,
157 char **param, unsigned int *param_len,
158 char **data, unsigned int *data_len)
159 {
160 unsigned int total_data=0;
161 unsigned int total_param=0;
162 unsigned int this_data,this_param;
163 NTSTATUS status;
164 bool ret = False;
165 uint16_t mid;
166
167 *data_len = *param_len = 0;
168
169 mid = SVAL(cli->outbuf,smb_mid);
170
171 if (!cli_receive_smb(cli)) {
172 cli_state_seqnum_remove(cli, mid);
173 return False;
174 }
175
176 show_msg(cli->inbuf);
177
178 /* sanity check */
179 if (CVAL(cli->inbuf,smb_com) != trans) {
180 DEBUG(0,("Expected %s response, got command 0x%02x\n",
181 trans==SMBtrans?"SMBtrans":"SMBtrans2",
182 CVAL(cli->inbuf,smb_com)));
183 cli_state_seqnum_remove(cli, mid);
184 return False;
185 }
186
187 /*
188 * An NT RPC pipe call can return ERRDOS, ERRmoredata
189 * to a trans call. This is not an error and should not
190 * be treated as such. Note that STATUS_NO_MORE_FILES is
191 * returned when a trans2 findfirst/next finishes.
192 * When setting up an encrypted transport we can also
193 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
194 *
195 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
196 * "<share>/Users/All Users" is enumerated. This is a special pseudo
197 * folder, and the response does not have parameters (nor a parameter
198 * length).
199 */
200 status = cli_nt_error(cli);
201
202 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
203 if (NT_STATUS_IS_ERR(status) ||
204 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
205 NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
206 goto out;
207 }
208 }
209
210 /* parse out the lengths */
211 total_data = SVAL(cli->inbuf,smb_tdrcnt);
212 total_param = SVAL(cli->inbuf,smb_tprcnt);
213
214 /* allocate it */
215 if (total_data!=0) {
216 /* We know adding 2 is safe as total_data is an
217 * SVAL <= 0xFFFF. */
218 *data = (char *)SMB_REALLOC(*data,total_data+2);
219 if (!(*data)) {
220 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
221 goto out;
222 }
223 }
224
225 if (total_param!=0) {
226 /* We know adding 2 is safe as total_param is an
227 * SVAL <= 0xFFFF. */
228 *param = (char *)SMB_REALLOC(*param,total_param+2);
229 if (!(*param)) {
230 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
231 goto out;
232 }
233 }
234
235 for (;;) {
236 this_data = SVAL(cli->inbuf,smb_drcnt);
237 this_param = SVAL(cli->inbuf,smb_prcnt);
238
239 if (this_data + *data_len > total_data ||
240 this_param + *param_len > total_param) {
241 DEBUG(1,("Data overflow in cli_receive_trans\n"));
242 goto out;
243 }
244
245 if (this_data + *data_len < this_data ||
246 this_data + *data_len < *data_len ||
247 this_param + *param_len < this_param ||
248 this_param + *param_len < *param_len) {
249 DEBUG(1,("Data overflow in cli_receive_trans\n"));
250 goto out;
251 }
252
253 if (this_data) {
254 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
255 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
256
257 if (data_offset_out > total_data ||
258 data_offset_out + this_data > total_data ||
259 data_offset_out + this_data < data_offset_out ||
260 data_offset_out + this_data < this_data) {
261 DEBUG(1,("Data overflow in cli_receive_trans\n"));
262 goto out;
263 }
264 if (data_offset_in > cli->bufsize ||
265 data_offset_in + this_data > cli->bufsize ||
266 data_offset_in + this_data < data_offset_in ||
267 data_offset_in + this_data < this_data) {
268 DEBUG(1,("Data overflow in cli_receive_trans\n"));
269 goto out;
270 }
271
272 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
273 }
274 if (this_param) {
275 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
276 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
277
278 if (param_offset_out > total_param ||
279 param_offset_out + this_param > total_param ||
280 param_offset_out + this_param < param_offset_out ||
281 param_offset_out + this_param < this_param) {
282 DEBUG(1,("Param overflow in cli_receive_trans\n"));
283 goto out;
284 }
285 if (param_offset_in > cli->bufsize ||
286 param_offset_in + this_param > cli->bufsize ||
287 param_offset_in + this_param < param_offset_in ||
288 param_offset_in + this_param < this_param) {
289 DEBUG(1,("Param overflow in cli_receive_trans\n"));
290 goto out;
291 }
292
293 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
294 }
295 *data_len += this_data;
296 *param_len += this_param;
297
298 if (total_data <= *data_len && total_param <= *param_len) {
299 ret = True;
300 break;
301 }
302
303 if (!cli_receive_smb(cli)) {
304 goto out;
305 }
306
307 show_msg(cli->inbuf);
308
309 /* sanity check */
310 if (CVAL(cli->inbuf,smb_com) != trans) {
311 DEBUG(0,("Expected %s response, got command 0x%02x\n",
312 trans==SMBtrans?"SMBtrans":"SMBtrans2",
313 CVAL(cli->inbuf,smb_com)));
314 goto out;
315 }
316 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
317 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
318 goto out;
319 }
320 }
321
322 /* parse out the total lengths again - they can shrink! */
323 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
324 total_data = SVAL(cli->inbuf,smb_tdrcnt);
325 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
326 total_param = SVAL(cli->inbuf,smb_tprcnt);
327
328 if (total_data <= *data_len && total_param <= *param_len) {
329 ret = True;
330 break;
331 }
332 }
333
334 out:
335
336 cli_state_seqnum_remove(cli, mid);
337
338 if (ret) {
339 /* Ensure the last 2 bytes of param and data are 2 null
340 * bytes. These are malloc'ed, but not included in any
341 * length counts. This allows cli_XX string reading functions
342 * to safely null terminate. */
343 if (total_data) {
344 SSVAL(*data,total_data,0);
345 }
346 if (total_param) {
347 SSVAL(*param,total_param,0);
348 }
349 }
350
351 return ret;
352 }
353
354 /****************************************************************************
355 Send a SMB nttrans request.
356 ****************************************************************************/
357
358 bool cli_send_nt_trans(struct cli_state *cli,
359 int function,
360 int flags,
361 uint16 *setup, unsigned int lsetup, unsigned int msetup,
362 char *param, unsigned int lparam, unsigned int mparam,
363 char *data, unsigned int ldata, unsigned int mdata)
364 {
365 unsigned int i;
366 unsigned int this_ldata,this_lparam;
367 unsigned int tot_data=0,tot_param=0;
368 uint16 mid;
369 char *outdata,*outparam;
370
371 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
372 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
373
374 memset(cli->outbuf,'\0',smb_size);
375 cli_set_message(cli->outbuf,19+lsetup,0,True);
376 SCVAL(cli->outbuf,smb_com,SMBnttrans);
377 SSVAL(cli->outbuf,smb_tid, cli->cnum);
378 cli_setup_packet(cli);
379
380 /*
381 * Save the mid we're using. We need this for finding
382 * signing replies.
383 */
384
385 mid = cli->mid;
386
387 outparam = smb_buf(cli->outbuf)+3;
388 outdata = outparam+this_lparam;
389
390 /* primary request */
391 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
392 SCVAL(cli->outbuf,smb_nt_Flags,flags);
393 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
394 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
395 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
396 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
397 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
398 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
399 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
400 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
401 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
402 SIVAL(cli->outbuf,smb_nt_Function, function);
403 for (i=0;i<lsetup;i++) /* setup[] */
404 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
405
406 if (this_lparam) /* param[] */
407 memcpy(outparam,param,this_lparam);
408 if (this_ldata) /* data[] */
409 memcpy(outdata,data,this_ldata);
410
411 cli_setup_bcc(cli, outdata+this_ldata);
412
413 show_msg(cli->outbuf);
414 if (!cli_send_smb(cli)) {
415 return False;
416 }
417
418 cli_state_seqnum_persistent(cli, mid);
419
420 if (this_ldata < ldata || this_lparam < lparam) {
421 /* receive interim response */
422 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
423 cli_state_seqnum_remove(cli, mid);
424 return(False);
425 }
426
427 tot_data = this_ldata;
428 tot_param = this_lparam;
429
430 while (tot_data < ldata || tot_param < lparam) {
431 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
432 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
433
434 cli_set_message(cli->outbuf,18,0,True);
435 SCVAL(cli->outbuf,smb_com,SMBnttranss);
436
437 /* XXX - these should probably be aligned */
438 outparam = smb_buf(cli->outbuf);
439 outdata = outparam+this_lparam;
440
441 /* secondary request */
442 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
443 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
444 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
445 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
446 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
447 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
448 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
449 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
450 if (this_lparam) /* param[] */
451 memcpy(outparam,param+tot_param,this_lparam);
452 if (this_ldata) /* data[] */
453 memcpy(outdata,data+tot_data,this_ldata);
454 cli_setup_bcc(cli, outdata+this_ldata);
455
456 show_msg(cli->outbuf);
457
458 cli->mid = mid;
459 if (!cli_send_smb(cli)) {
460 cli_state_seqnum_remove(cli, mid);
461 return False;
462 }
463
464 tot_data += this_ldata;
465 tot_param += this_lparam;
466 }
467 }
468
469 return(True);
470 }
471
472 /****************************************************************************
473 Receive a SMB nttrans response allocating the necessary memory.
474 ****************************************************************************/
475
476 bool cli_receive_nt_trans(struct cli_state *cli,
477 char **param, unsigned int *param_len,
478 char **data, unsigned int *data_len)
479 {
480 unsigned int total_data=0;
481 unsigned int total_param=0;
482 unsigned int this_data,this_param;
483 uint8 eclass;
484 uint32 ecode;
485 bool ret = False;
486 uint16_t mid;
487
488 *data_len = *param_len = 0;
489
490 mid = SVAL(cli->outbuf,smb_mid);
491
492 if (!cli_receive_smb(cli)) {
493 cli_state_seqnum_remove(cli, mid);
494 return False;
495 }
496
497 show_msg(cli->inbuf);
498
499 /* sanity check */
500 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
501 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
502 CVAL(cli->inbuf,smb_com)));
503 cli_state_seqnum_remove(cli, mid);
504 return(False);
505 }
506
507 /*
508 * An NT RPC pipe call can return ERRDOS, ERRmoredata
509 * to a trans call. This is not an error and should not
510 * be treated as such.
511 */
512 if (cli_is_dos_error(cli)) {
513 cli_dos_error(cli, &eclass, &ecode);
514 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
515 goto out;
516 }
517 }
518
519 /*
520 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
521 */
522 if (cli_is_nt_error(cli)) {
523 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
524 NT_STATUS_BUFFER_TOO_SMALL)) {
525 goto out;
526 }
527 }
528
529 /* parse out the lengths */
530 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
531 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
532 /* Only allow 16 megs. */
533 if (total_param > 16*1024*1024) {
534 DEBUG(0,("cli_receive_nt_trans: param buffer too large %d\n",
535 total_param));
536 goto out;
537 }
538 if (total_data > 16*1024*1024) {
539 DEBUG(0,("cli_receive_nt_trans: data buffer too large %d\n",
540 total_data));
541 goto out;
542 }
543
544 /* allocate it */
545 if (total_data) {
546 /* We know adding 2 is safe as total_data is less
547 * than 16mb (above). */
548 *data = (char *)SMB_REALLOC(*data,total_data+2);
549 if (!(*data)) {
550 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
551 goto out;
552 }
553 }
554
555 if (total_param) {
556 /* We know adding 2 is safe as total_param is less
557 * than 16mb (above). */
558 *param = (char *)SMB_REALLOC(*param,total_param+2);
559 if (!(*param)) {
560 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
561 goto out;
562 }
563 }
564
565 while (1) {
566 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
567 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
568
569 if (this_data + *data_len > total_data ||
570 this_param + *param_len > total_param) {
571 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
572 goto out;
573 }
574
575 if (this_data + *data_len < this_data ||
576 this_data + *data_len < *data_len ||
577 this_param + *param_len < this_param ||
578 this_param + *param_len < *param_len) {
579 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
580 goto out;
581 }
582
583 if (this_data) {
584 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
585 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
586
587 if (data_offset_out > total_data ||
588 data_offset_out + this_data > total_data ||
589 data_offset_out + this_data < data_offset_out ||
590 data_offset_out + this_data < this_data) {
591 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
592 goto out;
593 }
594 if (data_offset_in > cli->bufsize ||
595 data_offset_in + this_data > cli->bufsize ||
596 data_offset_in + this_data < data_offset_in ||
597 data_offset_in + this_data < this_data) {
598 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
599 goto out;
600 }
601
602 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
603 }
604
605 if (this_param) {
606 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
607 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
608
609 if (param_offset_out > total_param ||
610 param_offset_out + this_param > total_param ||
611 param_offset_out + this_param < param_offset_out ||
612 param_offset_out + this_param < this_param) {
613 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
614 goto out;
615 }
616 if (param_offset_in > cli->bufsize ||
617 param_offset_in + this_param > cli->bufsize ||
618 param_offset_in + this_param < param_offset_in ||
619 param_offset_in + this_param < this_param) {
620 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
621 goto out;
622 }
623
624 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
625 }
626
627 *data_len += this_data;
628 *param_len += this_param;
629
630 if (total_data <= *data_len && total_param <= *param_len) {
631 ret = True;
632 break;
633 }
634
635 if (!cli_receive_smb(cli)) {
636 goto out;
637 }
638
639 show_msg(cli->inbuf);
640
641 /* sanity check */
642 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
643 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
644 CVAL(cli->inbuf,smb_com)));
645 goto out;
646 }
647 if (cli_is_dos_error(cli)) {
648 cli_dos_error(cli, &eclass, &ecode);
649 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
650 goto out;
651 }
652 }
653 /*
654 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
655 */
656 if (cli_is_nt_error(cli)) {
657 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
658 NT_STATUS_BUFFER_TOO_SMALL)) {
659 goto out;
660 }
661 }
662
663 /* parse out the total lengths again - they can shrink! */
664 if (IVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
665 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
666 if (IVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
667 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
668
669 if (total_data <= *data_len && total_param <= *param_len) {
670 ret = True;
671 break;
672 }
673 }
674
675 out:
676
677 cli_state_seqnum_remove(cli, mid);
678
679 if (ret) {
680 /* Ensure the last 2 bytes of param and data are 2 null
681 * bytes. These are malloc'ed, but not included in any
682 * length counts. This allows cli_XX string reading functions
683 * to safely null terminate. */
684 if (total_data) {
685 SSVAL(*data,total_data,0);
686 }
687 if (total_param) {
688 SSVAL(*param,total_param,0);
689 }
690 }
691
692 return ret;
693 }
694
695 struct trans_recvblob {
696 uint8_t *data;
697 uint32_t max, total, received;
698 };
699
700 struct cli_trans_state {
701 struct cli_state *cli;
702 struct event_context *ev;
703 uint8_t cmd;
704 uint16_t mid;
705 uint32_t seqnum;
706 const char *pipe_name;
707 uint8_t *pipe_name_conv;
708 size_t pipe_name_conv_len;
709 uint16_t fid;
710 uint16_t function;
711 int flags;
712 uint16_t *setup;
713 uint8_t num_setup, max_setup;
714 uint8_t *param;
715 uint32_t num_param, param_sent;
716 uint8_t *data;
717 uint32_t num_data, data_sent;
718
719 uint8_t num_rsetup;
720 uint16_t *rsetup;
721 struct trans_recvblob rparam;
722 struct trans_recvblob rdata;
723 uint16_t recv_flags2;
724
725 TALLOC_CTX *secondary_request_ctx;
726
727 struct iovec iov[4];
728 uint8_t pad[4];
729 uint16_t vwv[32];
730 };
731
732 static NTSTATUS cli_pull_trans(uint8_t *inbuf,
733 uint8_t wct, uint16_t *vwv,
734 uint16_t num_bytes, uint8_t *bytes,
735 uint8_t smb_cmd, bool expect_first_reply,
736 uint8_t *pnum_setup, uint16_t **psetup,
737 uint32_t *ptotal_param, uint32_t *pnum_param,
738 uint32_t *pparam_disp, uint8_t **pparam,
739 uint32_t *ptotal_data, uint32_t *pnum_data,
740 uint32_t *pdata_disp, uint8_t **pdata)
741 {
742 uint32_t param_ofs, data_ofs;
743
744 if (expect_first_reply) {
745 if ((wct != 0) || (num_bytes != 0)) {
746 return NT_STATUS_INVALID_NETWORK_RESPONSE;
747 }
748 return NT_STATUS_OK;
749 }
750
751 switch (smb_cmd) {
752 case SMBtrans:
753 case SMBtrans2:
754 if (wct < 10) {
755 return NT_STATUS_INVALID_NETWORK_RESPONSE;
756 }
757 *ptotal_param = SVAL(vwv + 0, 0);
758 *ptotal_data = SVAL(vwv + 1, 0);
759 *pnum_param = SVAL(vwv + 3, 0);
760 param_ofs = SVAL(vwv + 4, 0);
761 *pparam_disp = SVAL(vwv + 5, 0);
762 *pnum_data = SVAL(vwv + 6, 0);
763 data_ofs = SVAL(vwv + 7, 0);
764 *pdata_disp = SVAL(vwv + 8, 0);
765 *pnum_setup = CVAL(vwv + 9, 0);
766 if (wct < 10 + (*pnum_setup)) {
767 return NT_STATUS_INVALID_NETWORK_RESPONSE;
768 }
769 *psetup = vwv + 10;
770
771 break;
772 case SMBnttrans:
773 if (wct < 18) {
774 return NT_STATUS_INVALID_NETWORK_RESPONSE;
775 }
776 *ptotal_param = IVAL(vwv, 3);
777 *ptotal_data = IVAL(vwv, 7);
778 *pnum_param = IVAL(vwv, 11);
779 param_ofs = IVAL(vwv, 15);
780 *pparam_disp = IVAL(vwv, 19);
781 *pnum_data = IVAL(vwv, 23);
782 data_ofs = IVAL(vwv, 27);
783 *pdata_disp = IVAL(vwv, 31);
784 *pnum_setup = CVAL(vwv, 35);
785 *psetup = vwv + 18;
786 break;
787
788 default:
789 return NT_STATUS_INTERNAL_ERROR;
790 }
791
792 /*
793 * Check for buffer overflows. data_ofs needs to be checked against
794 * the incoming buffer length, data_disp against the total
795 * length. Likewise for param_ofs/param_disp.
796 */
797
798 if (trans_oob(smb_len(inbuf), param_ofs, *pnum_param)
799 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
800 || trans_oob(smb_len(inbuf), data_ofs, *pnum_data)
801 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
802 return NT_STATUS_INVALID_NETWORK_RESPONSE;
803 }
804
805 *pparam = (uint8_t *)inbuf + 4 + param_ofs;
806 *pdata = (uint8_t *)inbuf + 4 + data_ofs;
807
808 return NT_STATUS_OK;
809 }
810
811 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
812 struct trans_recvblob *blob,
813 uint32_t total, uint32_t thistime,
814 uint8_t *buf, uint32_t displacement)
815 {
816 if (blob->data == NULL) {
817 if (total > blob->max) {
818 return NT_STATUS_INVALID_NETWORK_RESPONSE;
819 }
820 blob->total = total;
821 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
822 if (blob->data == NULL) {
823 return NT_STATUS_NO_MEMORY;
824 }
825 }
826
827 if (total > blob->total) {
828 return NT_STATUS_INVALID_NETWORK_RESPONSE;
829 }
830
831 if (thistime) {
832 memcpy(blob->data + displacement, buf, thistime);
833 blob->received += thistime;
834 }
835
836 return NT_STATUS_OK;
837 }
838
839 static void cli_trans_format(struct cli_trans_state *state, uint8_t *pwct,
840 int *piov_count)
841 {
842 uint8_t wct = 0;
843 struct iovec *iov = state->iov;
844 uint8_t *pad = state->pad;
845 uint16_t *vwv = state->vwv;
846 uint16_t param_offset;
847 uint16_t this_param = 0;
848 uint16_t this_data = 0;
849 uint32_t useable_space;
850 uint8_t cmd;
851
852 cmd = state->cmd;
853
854 if ((state->param_sent != 0) || (state->data_sent != 0)) {
855 /* The secondary commands are one after the primary ones */
856 cmd += 1;
857 }
858
859 param_offset = smb_size - 4;
860
861 switch (cmd) {
862 case SMBtrans:
863 pad[0] = 0;
864 iov[0].iov_base = (void *)pad;
865 iov[0].iov_len = 1;
866 iov[1].iov_base = (void *)state->pipe_name_conv;
867 iov[1].iov_len = state->pipe_name_conv_len;
868 wct = 14 + state->num_setup;
869 param_offset += iov[0].iov_len + iov[1].iov_len;
870 iov += 2;
871 break;
872 case SMBtrans2:
873 pad[0] = 0;
874 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
875 pad[2] = ' ';
876 iov[0].iov_base = (void *)pad;
877 iov[0].iov_len = 3;
878 wct = 14 + state->num_setup;
879 param_offset += 3;
880 iov += 1;
881 break;
882 case SMBtranss:
883 wct = 8;
884 break;
885 case SMBtranss2:
886 wct = 9;
887 break;
888 case SMBnttrans:
889 wct = 19 + state->num_setup;
890 break;
891 case SMBnttranss:
892 wct = 18;
893 break;
894 }
895
896 useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
897
898 if (state->param_sent < state->num_param) {
899 this_param = MIN(state->num_param - state->param_sent,
900 useable_space);
901 iov[0].iov_base = (void *)(state->param + state->param_sent);
902 iov[0].iov_len = this_param;
903 iov += 1;
904 }
905
906 if (state->data_sent < state->num_data) {
907 this_data = MIN(state->num_data - state->data_sent,
908 useable_space - this_param);
909 iov[0].iov_base = (void *)(state->data + state->data_sent);
910 iov[0].iov_len = this_data;
911 iov += 1;
912 }
913
914 param_offset += wct * sizeof(uint16_t);
915
916 DEBUG(10, ("num_setup=%u, max_setup=%u, "
917 "param_total=%u, this_param=%u, max_param=%u, "
918 "data_total=%u, this_data=%u, max_data=%u, "
919 "param_offset=%u, param_disp=%u, data_disp=%u\n",
920 (unsigned)state->num_setup, (unsigned)state->max_setup,
921 (unsigned)state->num_param, (unsigned)this_param,
922 (unsigned)state->rparam.max,
923 (unsigned)state->num_data, (unsigned)this_data,
924 (unsigned)state->rdata.max,
925 (unsigned)param_offset,
926 (unsigned)state->param_sent, (unsigned)state->data_sent));
927
928 switch (cmd) {
929 case SMBtrans:
930 case SMBtrans2:
931 SSVAL(vwv + 0, 0, state->num_param);
932 SSVAL(vwv + 1, 0, state->num_data);
933 SSVAL(vwv + 2, 0, state->rparam.max);
934 SSVAL(vwv + 3, 0, state->rdata.max);
935 SCVAL(vwv + 4, 0, state->max_setup);
936 SCVAL(vwv + 4, 1, 0); /* reserved */
937 SSVAL(vwv + 5, 0, state->flags);
938 SIVAL(vwv + 6, 0, 0); /* timeout */
939 SSVAL(vwv + 8, 0, 0); /* reserved */
940 SSVAL(vwv + 9, 0, this_param);
941 SSVAL(vwv +10, 0, param_offset);
942 SSVAL(vwv +11, 0, this_data);
943 SSVAL(vwv +12, 0, param_offset + this_param);
944 SCVAL(vwv +13, 0, state->num_setup);
945 SCVAL(vwv +13, 1, 0); /* reserved */
946 memcpy(vwv + 14, state->setup,
947 sizeof(uint16_t) * state->num_setup);
948 break;
949 case SMBtranss:
950 case SMBtranss2:
951 SSVAL(vwv + 0, 0, state->num_param);
952 SSVAL(vwv + 1, 0, state->num_data);
953 SSVAL(vwv + 2, 0, this_param);
954 SSVAL(vwv + 3, 0, param_offset);
955 SSVAL(vwv + 4, 0, state->param_sent);
956 SSVAL(vwv + 5, 0, this_data);
957 SSVAL(vwv + 6, 0, param_offset + this_param);
958 SSVAL(vwv + 7, 0, state->data_sent);
959 if (cmd == SMBtranss2) {
960 SSVAL(vwv + 8, 0, state->fid);
961 }
962 break;
963 case SMBnttrans:
964 SCVAL(vwv, 0, state->max_setup);
965 SSVAL(vwv, 1, 0); /* reserved */
966 SIVAL(vwv, 3, state->num_param);
967 SIVAL(vwv, 7, state->num_data);
968 SIVAL(vwv, 11, state->rparam.max);
969 SIVAL(vwv, 15, state->rdata.max);
970 SIVAL(vwv, 19, this_param);
971 SIVAL(vwv, 23, param_offset);
972 SIVAL(vwv, 27, this_data);
973 SIVAL(vwv, 31, param_offset + this_param);
974 SCVAL(vwv, 35, state->num_setup);
975 SSVAL(vwv, 36, state->function);
976 memcpy(vwv + 19, state->setup,
977 sizeof(uint16_t) * state->num_setup);
978 break;
979 case SMBnttranss:
980 SSVAL(vwv, 0, 0); /* reserved */
981 SCVAL(vwv, 2, 0); /* reserved */
982 SIVAL(vwv, 3, state->num_param);
983 SIVAL(vwv, 7, state->num_data);
984 SIVAL(vwv, 11, this_param);
985 SIVAL(vwv, 15, param_offset);
986 SIVAL(vwv, 19, state->param_sent);
987 SIVAL(vwv, 23, this_data);
988 SIVAL(vwv, 27, param_offset + this_param);
989 SIVAL(vwv, 31, state->data_sent);
990 SCVAL(vwv, 35, 0); /* reserved */
991 break;
992 }
993
994 state->param_sent += this_param;
995 state->data_sent += this_data;
996
997 *pwct = wct;
998 *piov_count = iov - state->iov;
999 }
1000
1001 static void cli_trans_done(struct tevent_req *subreq);
1002
1003 struct tevent_req *cli_trans_send(
1004 TALLOC_CTX *mem_ctx, struct event_context *ev,
1005 struct cli_state *cli, uint8_t cmd,
1006 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
1007 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1008 uint8_t *param, uint32_t num_param, uint32_t max_param,
1009 uint8_t *data, uint32_t num_data, uint32_t max_data)
1010 {
1011 struct tevent_req *req, *subreq;
1012 struct cli_trans_state *state;
1013 int iov_count;
1014 uint8_t wct;
1015 NTSTATUS status;
1016
1017 req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
1018 if (req == NULL) {
1019 return NULL;
1020 }
1021
1022 if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
1023 if ((num_param > 0xffff) || (max_param > 0xffff)
1024 || (num_data > 0xffff) || (max_data > 0xffff)) {
1025 DEBUG(3, ("Attempt to send invalid trans2 request "
1026 "(setup %u, params %u/%u, data %u/%u)\n",
1027 (unsigned)num_setup,
1028 (unsigned)num_param, (unsigned)max_param,
1029 (unsigned)num_data, (unsigned)max_data));
1030 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1031 return tevent_req_post(req, ev);
1032 }
1033 }
1034
1035 /*
1036 * The largest wct will be for nttrans (19+num_setup). Make sure we
1037 * don't overflow state->vwv in cli_trans_format.
1038 */
1039
1040 if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
1041 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1042 return tevent_req_post(req, ev);
1043 }
1044
1045 state->cli = cli;
1046 state->ev = ev;
1047 state->cmd = cmd;
1048 state->flags = flags;
1049 state->num_rsetup = 0;
1050 state->rsetup = NULL;
1051 ZERO_STRUCT(state->rparam);
1052 ZERO_STRUCT(state->rdata);
1053
1054 if ((pipe_name != NULL)
1055 && (!convert_string_talloc(state, CH_UNIX,
1056 cli_ucs2(cli) ? CH_UTF16LE : CH_DOS,
1057 pipe_name, strlen(pipe_name) + 1,
1058 &state->pipe_name_conv,
1059 &state->pipe_name_conv_len, true))) {
1060 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1061 return tevent_req_post(req, ev);
1062 }
1063 state->fid = fid; /* trans2 */
1064 state->function = function; /* nttrans */
1065
1066 state->setup = setup;
1067 state->num_setup = num_setup;
1068 state->max_setup = max_setup;
1069
1070 state->param = param;
1071 state->num_param = num_param;
1072 state->param_sent = 0;
1073 state->rparam.max = max_param;
1074
1075 state->data = data;
1076 state->num_data = num_data;
1077 state->data_sent = 0;
1078 state->rdata.max = max_data;
1079
1080 cli_trans_format(state, &wct, &iov_count);
1081
1082 subreq = cli_smb_req_create(state, ev, cli, cmd, 0, wct, state->vwv,
1083 iov_count, state->iov);
1084 if (tevent_req_nomem(subreq, req)) {
1085 return tevent_req_post(req, ev);
1086 }
1087 state->mid = cli_smb_req_mid(subreq);
1088 status = cli_smb_req_send(subreq);
1089 if (!NT_STATUS_IS_OK(status)) {
1090 tevent_req_nterror(req, status);
1091 return tevent_req_post(req, state->ev);
1092 }
1093 cli_state_seqnum_persistent(cli, state->mid);
1094 tevent_req_set_callback(subreq, cli_trans_done, req);
1095 return req;
1096 }
1097
1098 static void cli_trans_done(struct tevent_req *subreq)
1099 {
1100 struct tevent_req *req = tevent_req_callback_data(
1101 subreq, struct tevent_req);
1102 struct cli_trans_state *state = tevent_req_data(
1103 req, struct cli_trans_state);
1104 NTSTATUS status;
1105 bool sent_all;
1106 uint8_t wct;
1107 uint16_t *vwv;
1108 uint32_t num_bytes;
1109 uint8_t *bytes;
1110 uint8_t *inbuf;
1111 uint8_t num_setup = 0;
1112 uint16_t *setup = NULL;
1113 uint32_t total_param = 0;
1114 uint32_t num_param = 0;
1115 uint32_t param_disp = 0;
1116 uint32_t total_data = 0;
1117 uint32_t num_data = 0;
1118 uint32_t data_disp = 0;
1119 uint8_t *param = NULL;
1120 uint8_t *data = NULL;
1121
1122 status = cli_smb_recv(subreq, state, &inbuf, 0, &wct, &vwv,
1123 &num_bytes, &bytes);
1124 /*
1125 * Do not TALLOC_FREE(subreq) here, we might receive more than
1126 * one response for the same mid.
1127 */
1128
1129 /*
1130 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1131 * !NT_STATUS_IS_OK(status) here.
1132 */
1133
1134 if (NT_STATUS_IS_ERR(status)) {
1135 goto fail;
1136 }
1137
1138 sent_all = ((state->param_sent == state->num_param)
1139 && (state->data_sent == state->num_data));
1140
1141 status = cli_pull_trans(
1142 inbuf, wct, vwv, num_bytes, bytes,
1143 state->cmd, !sent_all, &num_setup, &setup,
1144 &total_param, &num_param, &param_disp, &param,
1145 &total_data, &num_data, &data_disp, &data);
1146
1147 if (!NT_STATUS_IS_OK(status)) {
1148 goto fail;
1149 }
1150
1151 if (!sent_all) {
1152 int iov_count;
1153
1154 TALLOC_FREE(subreq);
1155
1156 cli_trans_format(state, &wct, &iov_count);
1157
1158 subreq = cli_smb_req_create(state, state->ev, state->cli,
1159 state->cmd + 1, 0, wct, state->vwv,
1160 iov_count, state->iov);
1161 if (tevent_req_nomem(subreq, req)) {
1162 return;
1163 }
1164 cli_smb_req_set_mid(subreq, state->mid);
1165
1166 status = cli_smb_req_send(subreq);
1167
1168 if (!NT_STATUS_IS_OK(status)) {
1169 goto fail;
1170 }
1171 tevent_req_set_callback(subreq, cli_trans_done, req);
1172 return;
1173 }
1174
1175 status = cli_trans_pull_blob(
1176 state, &state->rparam, total_param, num_param, param,
1177 param_disp);
1178
1179 if (!NT_STATUS_IS_OK(status)) {
1180 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
1181 goto fail;
1182 }
1183
1184 status = cli_trans_pull_blob(
1185 state, &state->rdata, total_data, num_data, data,
1186 data_disp);
1187
1188 if (!NT_STATUS_IS_OK(status)) {
1189 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
1190 goto fail;
1191 }
1192
1193 if ((state->rparam.total == state->rparam.received)
1194 && (state->rdata.total == state->rdata.received)) {
1195 state->recv_flags2 = SVAL(inbuf, smb_flg2);
1196 TALLOC_FREE(subreq);
1197 cli_state_seqnum_remove(state->cli, state->mid);
1198 tevent_req_done(req);
1199 return;
1200 }
1201
1202 TALLOC_FREE(inbuf);
1203
1204 if (!cli_smb_req_set_pending(subreq)) {
1205 status = NT_STATUS_NO_MEMORY;
1206 goto fail;
1207 }
1208 return;
1209
1210 fail:
1211 cli_state_seqnum_remove(state->cli, state->mid);
1212 TALLOC_FREE(subreq);
1213 tevent_req_nterror(req, status);
1214 }
1215
1216 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1217 uint16_t *recv_flags2,
1218 uint16_t **setup, uint8_t min_setup,
1219 uint8_t *num_setup,
1220 uint8_t **param, uint32_t min_param,
1221 uint32_t *num_param,
1222 uint8_t **data, uint32_t min_data,
1223 uint32_t *num_data)
1224 {
1225 struct cli_trans_state *state = tevent_req_data(
1226 req, struct cli_trans_state);
1227 NTSTATUS status;
1228
1229 if (tevent_req_is_nterror(req, &status)) {
1230 return status;
1231 }
1232
1233 if ((state->num_rsetup < min_setup)
1234 || (state->rparam.total < min_param)
1235 || (state->rdata.total < min_data)) {
1236 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1237 }
1238
1239 if (recv_flags2 != NULL) {
1240 *recv_flags2 = state->recv_flags2;
1241 }
1242
1243 if (setup != NULL) {
1244 *setup = talloc_move(mem_ctx, &state->rsetup);
1245 *num_setup = state->num_rsetup;
1246 } else {
1247 TALLOC_FREE(state->rsetup);
1248 }
1249
1250 if (param != NULL) {
1251 *param = talloc_move(mem_ctx, &state->rparam.data);
1252 *num_param = state->rparam.total;
1253 } else {
1254 TALLOC_FREE(state->rparam.data);
1255 }
1256
1257 if (data != NULL) {
1258 *data = talloc_move(mem_ctx, &state->rdata.data);
1259 *num_data = state->rdata.total;
1260 } else {
1261 TALLOC_FREE(state->rdata.data);
1262 }
1263
1264 return NT_STATUS_OK;
1265 }
1266
1267 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
1268 uint8_t trans_cmd,
1269 const char *pipe_name, uint16_t fid, uint16_t function,
1270 int flags,
1271 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1272 uint8_t *param, uint32_t num_param, uint32_t max_param,
1273 uint8_t *data, uint32_t num_data, uint32_t max_data,
1274 uint16_t *recv_flags2,
1275 uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
1276 uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
1277 uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
1278 {
1279 TALLOC_CTX *frame = talloc_stackframe();
1280 struct event_context *ev;
1281 struct tevent_req *req;
1282 NTSTATUS status = NT_STATUS_OK;
1283
1284 if (cli_has_async_calls(cli)) {
1285 /*
1286 * Can't use sync call while an async call is in flight
1287 */
1288 status = NT_STATUS_INVALID_PARAMETER;
1289 goto fail;
1290 }
1291
1292 ev = event_context_init(frame);
1293 if (ev == NULL) {
1294 status = NT_STATUS_NO_MEMORY;
1295 goto fail;
1296 }
1297
1298 req = cli_trans_send(frame, ev, cli, trans_cmd,
1299 pipe_name, fid, function, flags,
1300 setup, num_setup, max_setup,
1301 param, num_param, max_param,
1302 data, num_data, max_data);
1303 if (req == NULL) {
1304 status = NT_STATUS_NO_MEMORY;
1305 goto fail;
1306 }
1307
1308 if (!tevent_req_poll(req, ev)) {
1309 status = map_nt_error_from_unix(errno);
1310 goto fail;
1311 }
1312
1313 status = cli_trans_recv(req, mem_ctx, recv_flags2,
1314 rsetup, min_rsetup, num_rsetup,
1315 rparam, min_rparam, num_rparam,
1316 rdata, min_rdata, num_rdata);
1317 fail:
1318 TALLOC_FREE(frame);
1319 if (!NT_STATUS_IS_OK(status)) {
1320 cli_set_error(cli, status);
1321 }
1322 return status;
1323 }
WIP