?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s4/build: Indicate whether Samba4 is being built against the system
[Samba/eduardoll.git] / source3 / libsmb / clitrans.c
blobec63bc3b9daefac9bc1ca0e1dfdbd88cf7417fd9
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
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
724 TALLOC_CTX *secondary_request_ctx;
725
726 struct iovec iov[4];
727 uint8_t pad[4];
728 uint16_t vwv[32];
729 };
730
731 static NTSTATUS cli_pull_trans(uint8_t *inbuf,
732 uint8_t wct, uint16_t *vwv,
733 uint16_t num_bytes, uint8_t *bytes,
734 uint8_t smb_cmd, bool expect_first_reply,
735 uint8_t *pnum_setup, uint16_t **psetup,
736 uint32_t *ptotal_param, uint32_t *pnum_param,
737 uint32_t *pparam_disp, uint8_t **pparam,
738 uint32_t *ptotal_data, uint32_t *pnum_data,
739 uint32_t *pdata_disp, uint8_t **pdata)
740 {
741 uint32_t param_ofs, data_ofs;
742
743 if (expect_first_reply) {
744 if ((wct != 0) || (num_bytes != 0)) {
745 return NT_STATUS_INVALID_NETWORK_RESPONSE;
746 }
747 return NT_STATUS_OK;
748 }
749
750 switch (smb_cmd) {
751 case SMBtrans:
752 case SMBtrans2:
753 if (wct < 10) {
754 return NT_STATUS_INVALID_NETWORK_RESPONSE;
755 }
756 *ptotal_param = SVAL(vwv + 0, 0);
757 *ptotal_data = SVAL(vwv + 1, 0);
758 *pnum_param = SVAL(vwv + 3, 0);
759 param_ofs = SVAL(vwv + 4, 0);
760 *pparam_disp = SVAL(vwv + 5, 0);
761 *pnum_data = SVAL(vwv + 6, 0);
762 data_ofs = SVAL(vwv + 7, 0);
763 *pdata_disp = SVAL(vwv + 8, 0);
764 *pnum_setup = CVAL(vwv + 9, 0);
765 if (wct < 10 + (*pnum_setup)) {
766 return NT_STATUS_INVALID_NETWORK_RESPONSE;
767 }
768 *psetup = vwv + 10;
769
770 break;
771 case SMBnttrans:
772 if (wct < 18) {
773 return NT_STATUS_INVALID_NETWORK_RESPONSE;
774 }
775 *ptotal_param = IVAL(vwv, 3);
776 *ptotal_data = IVAL(vwv, 7);
777 *pnum_param = IVAL(vwv, 11);
778 param_ofs = IVAL(vwv, 15);
779 *pparam_disp = IVAL(vwv, 19);
780 *pnum_data = IVAL(vwv, 23);
781 data_ofs = IVAL(vwv, 27);
782 *pdata_disp = IVAL(vwv, 31);
783 *pnum_setup = CVAL(vwv, 35);
784 *psetup = vwv + 18;
785 break;
786
787 default:
788 return NT_STATUS_INTERNAL_ERROR;
789 }
790
791 /*
792 * Check for buffer overflows. data_ofs needs to be checked against
793 * the incoming buffer length, data_disp against the total
794 * length. Likewise for param_ofs/param_disp.
795 */
796
797 if (trans_oob(smb_len(inbuf), param_ofs, *pnum_param)
798 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
799 || trans_oob(smb_len(inbuf), data_ofs, *pnum_data)
800 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
801 return NT_STATUS_INVALID_NETWORK_RESPONSE;
802 }
803
804 *pparam = (uint8_t *)inbuf + 4 + param_ofs;
805 *pdata = (uint8_t *)inbuf + 4 + data_ofs;
806
807 return NT_STATUS_OK;
808 }
809
810 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
811 struct trans_recvblob *blob,
812 uint32_t total, uint32_t thistime,
813 uint8_t *buf, uint32_t displacement)
814 {
815 if (blob->data == NULL) {
816 if (total > blob->max) {
817 return NT_STATUS_INVALID_NETWORK_RESPONSE;
818 }
819 blob->total = total;
820 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
821 if (blob->data == NULL) {
822 return NT_STATUS_NO_MEMORY;
823 }
824 }
825
826 if (total > blob->total) {
827 return NT_STATUS_INVALID_NETWORK_RESPONSE;
828 }
829
830 if (thistime) {
831 memcpy(blob->data + displacement, buf, thistime);
832 blob->received += thistime;
833 }
834
835 return NT_STATUS_OK;
836 }
837
838 static void cli_trans_format(struct cli_trans_state *state, uint8_t *pwct,
839 int *piov_count)
840 {
841 uint8_t wct = 0;
842 struct iovec *iov = state->iov;
843 uint8_t *pad = state->pad;
844 uint16_t *vwv = state->vwv;
845 uint16_t param_offset;
846 uint16_t this_param = 0;
847 uint16_t this_data = 0;
848 uint32_t useable_space;
849 uint8_t cmd;
850
851 cmd = state->cmd;
852
853 if ((state->param_sent != 0) || (state->data_sent != 0)) {
854 /* The secondary commands are one after the primary ones */
855 cmd += 1;
856 }
857
858 param_offset = smb_size - 4;
859
860 switch (cmd) {
861 case SMBtrans:
862 pad[0] = 0;
863 iov[0].iov_base = (void *)pad;
864 iov[0].iov_len = 1;
865 iov[1].iov_base = (void *)state->pipe_name_conv;
866 iov[1].iov_len = state->pipe_name_conv_len;
867 wct = 14 + state->num_setup;
868 param_offset += iov[0].iov_len + iov[1].iov_len;
869 iov += 2;
870 break;
871 case SMBtrans2:
872 pad[0] = 0;
873 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
874 pad[2] = ' ';
875 iov[0].iov_base = (void *)pad;
876 iov[0].iov_len = 3;
877 wct = 14 + state->num_setup;
878 param_offset += 3;
879 iov += 1;
880 break;
881 case SMBtranss:
882 wct = 8;
883 break;
884 case SMBtranss2:
885 wct = 9;
886 break;
887 case SMBnttrans:
888 wct = 19 + state->num_setup;
889 break;
890 case SMBnttranss:
891 wct = 18;
892 break;
893 }
894
895 useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
896
897 if (state->param_sent < state->num_param) {
898 this_param = MIN(state->num_param - state->param_sent,
899 useable_space);
900 iov[0].iov_base = (void *)(state->param + state->param_sent);
901 iov[0].iov_len = this_param;
902 iov += 1;
903 }
904
905 if (state->data_sent < state->num_data) {
906 this_data = MIN(state->num_data - state->data_sent,
907 useable_space - this_param);
908 iov[0].iov_base = (void *)(state->data + state->data_sent);
909 iov[0].iov_len = this_data;
910 iov += 1;
911 }
912
913 param_offset += wct * sizeof(uint16_t);
914
915 DEBUG(10, ("num_setup=%u, max_setup=%u, "
916 "param_total=%u, this_param=%u, max_param=%u, "
917 "data_total=%u, this_data=%u, max_data=%u, "
918 "param_offset=%u, param_disp=%u, data_disp=%u\n",
919 (unsigned)state->num_setup, (unsigned)state->max_setup,
920 (unsigned)state->num_param, (unsigned)this_param,
921 (unsigned)state->rparam.max,
922 (unsigned)state->num_data, (unsigned)this_data,
923 (unsigned)state->rdata.max,
924 (unsigned)param_offset,
925 (unsigned)state->param_sent, (unsigned)state->data_sent));
926
927 switch (cmd) {
928 case SMBtrans:
929 case SMBtrans2:
930 SSVAL(vwv + 0, 0, state->num_param);
931 SSVAL(vwv + 1, 0, state->num_data);
932 SSVAL(vwv + 2, 0, state->rparam.max);
933 SSVAL(vwv + 3, 0, state->rdata.max);
934 SCVAL(vwv + 4, 0, state->max_setup);
935 SCVAL(vwv + 4, 1, 0); /* reserved */
936 SSVAL(vwv + 5, 0, state->flags);
937 SIVAL(vwv + 6, 0, 0); /* timeout */
938 SSVAL(vwv + 8, 0, 0); /* reserved */
939 SSVAL(vwv + 9, 0, this_param);
940 SSVAL(vwv +10, 0, param_offset);
941 SSVAL(vwv +11, 0, this_data);
942 SSVAL(vwv +12, 0, param_offset + this_param);
943 SCVAL(vwv +13, 0, state->num_setup);
944 SCVAL(vwv +13, 1, 0); /* reserved */
945 memcpy(vwv + 14, state->setup,
946 sizeof(uint16_t) * state->num_setup);
947 break;
948 case SMBtranss:
949 case SMBtranss2:
950 SSVAL(vwv + 0, 0, state->num_param);
951 SSVAL(vwv + 1, 0, state->num_data);
952 SSVAL(vwv + 2, 0, this_param);
953 SSVAL(vwv + 3, 0, param_offset);
954 SSVAL(vwv + 4, 0, state->param_sent);
955 SSVAL(vwv + 5, 0, this_data);
956 SSVAL(vwv + 6, 0, param_offset + this_param);
957 SSVAL(vwv + 7, 0, state->data_sent);
958 if (cmd == SMBtranss2) {
959 SSVAL(vwv + 8, 0, state->fid);
960 }
961 break;
962 case SMBnttrans:
963 SCVAL(vwv, 0, state->max_setup);
964 SSVAL(vwv, 1, 0); /* reserved */
965 SIVAL(vwv, 3, state->num_param);
966 SIVAL(vwv, 7, state->num_data);
967 SIVAL(vwv, 11, state->rparam.max);
968 SIVAL(vwv, 15, state->rdata.max);
969 SIVAL(vwv, 19, this_param);
970 SIVAL(vwv, 23, param_offset);
971 SIVAL(vwv, 27, this_data);
972 SIVAL(vwv, 31, param_offset + this_param);
973 SCVAL(vwv, 35, state->num_setup);
974 SSVAL(vwv, 36, state->function);
975 memcpy(vwv + 19, state->setup,
976 sizeof(uint16_t) * state->num_setup);
977 break;
978 case SMBnttranss:
979 SSVAL(vwv, 0, 0); /* reserved */
980 SCVAL(vwv, 2, 0); /* reserved */
981 SIVAL(vwv, 3, state->num_param);
982 SIVAL(vwv, 7, state->num_data);
983 SIVAL(vwv, 11, this_param);
984 SIVAL(vwv, 15, param_offset);
985 SIVAL(vwv, 19, state->param_sent);
986 SIVAL(vwv, 23, this_data);
987 SIVAL(vwv, 27, param_offset + this_param);
988 SIVAL(vwv, 31, state->data_sent);
989 SCVAL(vwv, 35, 0); /* reserved */
990 break;
991 }
992
993 state->param_sent += this_param;
994 state->data_sent += this_data;
995
996 *pwct = wct;
997 *piov_count = iov - state->iov;
998 }
999
1000 static void cli_trans_done(struct tevent_req *subreq);
1001
1002 struct tevent_req *cli_trans_send(
1003 TALLOC_CTX *mem_ctx, struct event_context *ev,
1004 struct cli_state *cli, uint8_t cmd,
1005 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
1006 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1007 uint8_t *param, uint32_t num_param, uint32_t max_param,
1008 uint8_t *data, uint32_t num_data, uint32_t max_data)
1009 {
1010 struct tevent_req *req, *subreq;
1011 struct cli_trans_state *state;
1012 int iov_count;
1013 uint8_t wct;
1014 NTSTATUS status;
1015
1016 req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
1017 if (req == NULL) {
1018 return NULL;
1019 }
1020
1021 if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
1022 if ((num_param > 0xffff) || (max_param > 0xffff)
1023 || (num_data > 0xffff) || (max_data > 0xffff)) {
1024 DEBUG(3, ("Attempt to send invalid trans2 request "
1025 "(setup %u, params %u/%u, data %u/%u)\n",
1026 (unsigned)num_setup,
1027 (unsigned)num_param, (unsigned)max_param,
1028 (unsigned)num_data, (unsigned)max_data));
1029 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1030 return tevent_req_post(req, ev);
1031 }
1032 }
1033
1034 /*
1035 * The largest wct will be for nttrans (19+num_setup). Make sure we
1036 * don't overflow state->vwv in cli_trans_format.
1037 */
1038
1039 if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
1040 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1041 return tevent_req_post(req, ev);
1042 }
1043
1044 state->cli = cli;
1045 state->ev = ev;
1046 state->cmd = cmd;
1047 state->flags = flags;
1048 state->num_rsetup = 0;
1049 state->rsetup = NULL;
1050 ZERO_STRUCT(state->rparam);
1051 ZERO_STRUCT(state->rdata);
1052
1053 if ((pipe_name != NULL)
1054 && (!convert_string_talloc(state, CH_UNIX,
1055 cli_ucs2(cli) ? CH_UTF16LE : CH_DOS,
1056 pipe_name, strlen(pipe_name) + 1,
1057 &state->pipe_name_conv,
1058 &state->pipe_name_conv_len, true))) {
1059 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1060 return tevent_req_post(req, ev);
1061 }
1062 state->fid = fid; /* trans2 */
1063 state->function = function; /* nttrans */
1064
1065 state->setup = setup;
1066 state->num_setup = num_setup;
1067 state->max_setup = max_setup;
1068
1069 state->param = param;
1070 state->num_param = num_param;
1071 state->param_sent = 0;
1072 state->rparam.max = max_param;
1073
1074 state->data = data;
1075 state->num_data = num_data;
1076 state->data_sent = 0;
1077 state->rdata.max = max_data;
1078
1079 cli_trans_format(state, &wct, &iov_count);
1080
1081 subreq = cli_smb_req_create(state, ev, cli, cmd, 0, wct, state->vwv,
1082 iov_count, state->iov);
1083 if (tevent_req_nomem(subreq, req)) {
1084 return tevent_req_post(req, ev);
1085 }
1086 state->mid = cli_smb_req_mid(subreq);
1087 status = cli_smb_req_send(subreq);
1088 if (!NT_STATUS_IS_OK(status)) {
1089 tevent_req_nterror(req, status);
1090 return tevent_req_post(req, state->ev);
1091 }
1092 cli_state_seqnum_persistent(cli, state->mid);
1093 tevent_req_set_callback(subreq, cli_trans_done, req);
1094 return req;
1095 }
1096
1097 static void cli_trans_done(struct tevent_req *subreq)
1098 {
1099 struct tevent_req *req = tevent_req_callback_data(
1100 subreq, struct tevent_req);
1101 struct cli_trans_state *state = tevent_req_data(
1102 req, struct cli_trans_state);
1103 NTSTATUS status;
1104 bool sent_all;
1105 uint8_t wct;
1106 uint16_t *vwv;
1107 uint32_t num_bytes;
1108 uint8_t *bytes;
1109 uint8_t num_setup = 0;
1110 uint16_t *setup = NULL;
1111 uint32_t total_param = 0;
1112 uint32_t num_param = 0;
1113 uint32_t param_disp = 0;
1114 uint32_t total_data = 0;
1115 uint32_t num_data = 0;
1116 uint32_t data_disp = 0;
1117 uint8_t *param = NULL;
1118 uint8_t *data = NULL;
1119
1120 status = cli_smb_recv(subreq, 0, &wct, &vwv, &num_bytes, &bytes);
1121
1122 /*
1123 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1124 * !NT_STATUS_IS_OK(status) here.
1125 */
1126
1127 if (NT_STATUS_IS_ERR(status)) {
1128 goto fail;
1129 }
1130
1131 sent_all = ((state->param_sent == state->num_param)
1132 && (state->data_sent == state->num_data));
1133
1134 status = cli_pull_trans(
1135 cli_smb_inbuf(subreq), wct, vwv, num_bytes, bytes,
1136 state->cmd, !sent_all, &num_setup, &setup,
1137 &total_param, &num_param, &param_disp, &param,
1138 &total_data, &num_data, &data_disp, &data);
1139
1140 if (!NT_STATUS_IS_OK(status)) {
1141 goto fail;
1142 }
1143
1144 if (!sent_all) {
1145 int iov_count;
1146
1147 TALLOC_FREE(subreq);
1148
1149 cli_trans_format(state, &wct, &iov_count);
1150
1151 subreq = cli_smb_req_create(state, state->ev, state->cli,
1152 state->cmd + 1, 0, wct, state->vwv,
1153 iov_count, state->iov);
1154 if (tevent_req_nomem(subreq, req)) {
1155 return;
1156 }
1157 cli_smb_req_set_mid(subreq, state->mid);
1158
1159 status = cli_smb_req_send(subreq);
1160
1161 if (!NT_STATUS_IS_OK(status)) {
1162 goto fail;
1163 }
1164 tevent_req_set_callback(subreq, cli_trans_done, req);
1165 return;
1166 }
1167
1168 status = cli_trans_pull_blob(
1169 state, &state->rparam, total_param, num_param, param,
1170 param_disp);
1171
1172 if (!NT_STATUS_IS_OK(status)) {
1173 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
1174 goto fail;
1175 }
1176
1177 status = cli_trans_pull_blob(
1178 state, &state->rdata, total_data, num_data, data,
1179 data_disp);
1180
1181 if (!NT_STATUS_IS_OK(status)) {
1182 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
1183 goto fail;
1184 }
1185
1186 if ((state->rparam.total == state->rparam.received)
1187 && (state->rdata.total == state->rdata.received)) {
1188 TALLOC_FREE(subreq);
1189 cli_state_seqnum_remove(state->cli, state->mid);
1190 tevent_req_done(req);
1191 return;
1192 }
1193
1194 if (!cli_smb_req_set_pending(subreq)) {
1195 status = NT_STATUS_NO_MEMORY;
1196 goto fail;
1197 }
1198 return;
1199
1200 fail:
1201 cli_state_seqnum_remove(state->cli, state->mid);
1202 TALLOC_FREE(subreq);
1203 tevent_req_nterror(req, status);
1204 }
1205
1206 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1207 uint16_t **setup, uint8_t min_setup,
1208 uint8_t *num_setup,
1209 uint8_t **param, uint32_t min_param,
1210 uint32_t *num_param,
1211 uint8_t **data, uint32_t min_data,
1212 uint32_t *num_data)
1213 {
1214 struct cli_trans_state *state = tevent_req_data(
1215 req, struct cli_trans_state);
1216 NTSTATUS status;
1217
1218 if (tevent_req_is_nterror(req, &status)) {
1219 return status;
1220 }
1221
1222 if ((state->num_rsetup < min_setup)
1223 || (state->rparam.total < min_param)
1224 || (state->rdata.total < min_data)) {
1225 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1226 }
1227
1228 if (setup != NULL) {
1229 *setup = talloc_move(mem_ctx, &state->rsetup);
1230 *num_setup = state->num_rsetup;
1231 } else {
1232 TALLOC_FREE(state->rsetup);
1233 }
1234
1235 if (param != NULL) {
1236 *param = talloc_move(mem_ctx, &state->rparam.data);
1237 *num_param = state->rparam.total;
1238 } else {
1239 TALLOC_FREE(state->rparam.data);
1240 }
1241
1242 if (data != NULL) {
1243 *data = talloc_move(mem_ctx, &state->rdata.data);
1244 *num_data = state->rdata.total;
1245 } else {
1246 TALLOC_FREE(state->rdata.data);
1247 }
1248
1249 return NT_STATUS_OK;
1250 }
1251
1252 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
1253 uint8_t trans_cmd,
1254 const char *pipe_name, uint16_t fid, uint16_t function,
1255 int flags,
1256 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1257 uint8_t *param, uint32_t num_param, uint32_t max_param,
1258 uint8_t *data, uint32_t num_data, uint32_t max_data,
1259 uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
1260 uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
1261 uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
1262 {
1263 TALLOC_CTX *frame = talloc_stackframe();
1264 struct event_context *ev;
1265 struct tevent_req *req;
1266 NTSTATUS status = NT_STATUS_OK;
1267
1268 if (cli_has_async_calls(cli)) {
1269 /*
1270 * Can't use sync call while an async call is in flight
1271 */
1272 status = NT_STATUS_INVALID_PARAMETER;
1273 goto fail;
1274 }
1275
1276 ev = event_context_init(frame);
1277 if (ev == NULL) {
1278 status = NT_STATUS_NO_MEMORY;
1279 goto fail;
1280 }
1281
1282 req = cli_trans_send(frame, ev, cli, trans_cmd,
1283 pipe_name, fid, function, flags,
1284 setup, num_setup, max_setup,
1285 param, num_param, max_param,
1286 data, num_data, max_data);
1287 if (req == NULL) {
1288 status = NT_STATUS_NO_MEMORY;
1289 goto fail;
1290 }
1291
1292 if (!tevent_req_poll(req, ev)) {
1293 status = map_nt_error_from_unix(errno);
1294 goto fail;
1295 }
1296
1297 status = cli_trans_recv(req, mem_ctx, rsetup, min_rsetup, num_rsetup,
1298 rparam, min_rparam, num_rparam,
1299 rdata, min_rdata, num_rdata);
1300 fail:
1301 TALLOC_FREE(frame);
1302 if (!NT_STATUS_IS_OK(status)) {
1303 cli_set_error(cli, status);
1304 }
1305 return status;
1306 }
Eduardo's samba4 branches