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Reorder arguments to ldb_search() to match what is in Samba 4.
[Samba/ekacnet.git] / source3 / libsmb / clitrans.c
blobbaa73aeb14e199c03754d028b14af30558ed9f1b
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 /* Note we're in a trans state. Save the sequence
98 * numbers for replies. */
99 client_set_trans_sign_state_on(cli, mid);
100
101 if (this_ldata < ldata || this_lparam < lparam) {
102 /* receive interim response */
103 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
104 client_set_trans_sign_state_off(cli, mid);
105 return(False);
106 }
107
108 tot_data = this_ldata;
109 tot_param = this_lparam;
110
111 while (tot_data < ldata || tot_param < lparam) {
112 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
113 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
114
115 client_set_trans_sign_state_off(cli, mid);
116 client_set_trans_sign_state_on(cli, mid);
117
118 cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
119 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
120
121 outparam = smb_buf(cli->outbuf);
122 outdata = outparam+this_lparam;
123
124 /* secondary request */
125 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
126 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
127 SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
128 SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
129 SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
130 SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
131 SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
132 SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
133 if (trans==SMBtrans2)
134 SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
135 if (this_lparam) /* param[] */
136 memcpy(outparam,param+tot_param,this_lparam);
137 if (this_ldata) /* data[] */
138 memcpy(outdata,data+tot_data,this_ldata);
139 cli_setup_bcc(cli, outdata+this_ldata);
140
141 /*
142 * Save the mid we're using. We need this for finding
143 * signing replies.
144 */
145 mid = cli->mid;
146
147 show_msg(cli->outbuf);
148 if (!cli_send_smb(cli)) {
149 client_set_trans_sign_state_off(cli, mid);
150 return False;
151 }
152
153 /* Ensure we use the same mid for the secondaries. */
154 cli->mid = mid;
155
156 tot_data += this_ldata;
157 tot_param += this_lparam;
158 }
159 }
160
161 return(True);
162 }
163
164 /****************************************************************************
165 Receive a SMB trans or trans2 response allocating the necessary memory.
166 ****************************************************************************/
167
168 bool cli_receive_trans(struct cli_state *cli,int trans,
169 char **param, unsigned int *param_len,
170 char **data, unsigned int *data_len)
171 {
172 unsigned int total_data=0;
173 unsigned int total_param=0;
174 unsigned int this_data,this_param;
175 NTSTATUS status;
176 bool ret = False;
177
178 *data_len = *param_len = 0;
179
180 if (!cli_receive_smb(cli)) {
181 return False;
182 }
183
184 show_msg(cli->inbuf);
185
186 /* sanity check */
187 if (CVAL(cli->inbuf,smb_com) != trans) {
188 DEBUG(0,("Expected %s response, got command 0x%02x\n",
189 trans==SMBtrans?"SMBtrans":"SMBtrans2",
190 CVAL(cli->inbuf,smb_com)));
191 return False;
192 }
193
194 /*
195 * An NT RPC pipe call can return ERRDOS, ERRmoredata
196 * to a trans call. This is not an error and should not
197 * be treated as such. Note that STATUS_NO_MORE_FILES is
198 * returned when a trans2 findfirst/next finishes.
199 * When setting up an encrypted transport we can also
200 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
201 *
202 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
203 * "<share>/Users/All Users" is enumerated. This is a special pseudo
204 * folder, and the response does not have parameters (nor a parameter
205 * length).
206 */
207 status = cli_nt_error(cli);
208
209 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
210 if (NT_STATUS_IS_ERR(status) ||
211 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
212 NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
213 goto out;
214 }
215 }
216
217 /* parse out the lengths */
218 total_data = SVAL(cli->inbuf,smb_tdrcnt);
219 total_param = SVAL(cli->inbuf,smb_tprcnt);
220
221 /* allocate it */
222 if (total_data!=0) {
223 /* We know adding 2 is safe as total_data is an
224 * SVAL <= 0xFFFF. */
225 *data = (char *)SMB_REALLOC(*data,total_data+2);
226 if (!(*data)) {
227 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
228 goto out;
229 }
230 }
231
232 if (total_param!=0) {
233 /* We know adding 2 is safe as total_param is an
234 * SVAL <= 0xFFFF. */
235 *param = (char *)SMB_REALLOC(*param,total_param+2);
236 if (!(*param)) {
237 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
238 goto out;
239 }
240 }
241
242 for (;;) {
243 this_data = SVAL(cli->inbuf,smb_drcnt);
244 this_param = SVAL(cli->inbuf,smb_prcnt);
245
246 if (this_data + *data_len > total_data ||
247 this_param + *param_len > total_param) {
248 DEBUG(1,("Data overflow in cli_receive_trans\n"));
249 goto out;
250 }
251
252 if (this_data + *data_len < this_data ||
253 this_data + *data_len < *data_len ||
254 this_param + *param_len < this_param ||
255 this_param + *param_len < *param_len) {
256 DEBUG(1,("Data overflow in cli_receive_trans\n"));
257 goto out;
258 }
259
260 if (this_data) {
261 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
262 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
263
264 if (data_offset_out > total_data ||
265 data_offset_out + this_data > total_data ||
266 data_offset_out + this_data < data_offset_out ||
267 data_offset_out + this_data < this_data) {
268 DEBUG(1,("Data overflow in cli_receive_trans\n"));
269 goto out;
270 }
271 if (data_offset_in > cli->bufsize ||
272 data_offset_in + this_data > cli->bufsize ||
273 data_offset_in + this_data < data_offset_in ||
274 data_offset_in + this_data < this_data) {
275 DEBUG(1,("Data overflow in cli_receive_trans\n"));
276 goto out;
277 }
278
279 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
280 }
281 if (this_param) {
282 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
283 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
284
285 if (param_offset_out > total_param ||
286 param_offset_out + this_param > total_param ||
287 param_offset_out + this_param < param_offset_out ||
288 param_offset_out + this_param < this_param) {
289 DEBUG(1,("Param overflow in cli_receive_trans\n"));
290 goto out;
291 }
292 if (param_offset_in > cli->bufsize ||
293 param_offset_in + this_param > cli->bufsize ||
294 param_offset_in + this_param < param_offset_in ||
295 param_offset_in + this_param < this_param) {
296 DEBUG(1,("Param overflow in cli_receive_trans\n"));
297 goto out;
298 }
299
300 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
301 }
302 *data_len += this_data;
303 *param_len += this_param;
304
305 if (total_data <= *data_len && total_param <= *param_len) {
306 ret = True;
307 break;
308 }
309
310 if (!cli_receive_smb(cli)) {
311 goto out;
312 }
313
314 show_msg(cli->inbuf);
315
316 /* sanity check */
317 if (CVAL(cli->inbuf,smb_com) != trans) {
318 DEBUG(0,("Expected %s response, got command 0x%02x\n",
319 trans==SMBtrans?"SMBtrans":"SMBtrans2",
320 CVAL(cli->inbuf,smb_com)));
321 goto out;
322 }
323 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
324 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
325 goto out;
326 }
327 }
328
329 /* parse out the total lengths again - they can shrink! */
330 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
331 total_data = SVAL(cli->inbuf,smb_tdrcnt);
332 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
333 total_param = SVAL(cli->inbuf,smb_tprcnt);
334
335 if (total_data <= *data_len && total_param <= *param_len) {
336 ret = True;
337 break;
338 }
339 }
340
341 out:
342
343 if (ret) {
344 /* Ensure the last 2 bytes of param and data are 2 null
345 * bytes. These are malloc'ed, but not included in any
346 * length counts. This allows cli_XX string reading functions
347 * to safely null terminate. */
348 if (total_data) {
349 SSVAL(*data,total_data,0);
350 }
351 if (total_param) {
352 SSVAL(*param,total_param,0);
353 }
354 }
355
356 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
357 return ret;
358 }
359
360 /****************************************************************************
361 Send a SMB nttrans request.
362 ****************************************************************************/
363
364 bool cli_send_nt_trans(struct cli_state *cli,
365 int function,
366 int flags,
367 uint16 *setup, unsigned int lsetup, unsigned int msetup,
368 char *param, unsigned int lparam, unsigned int mparam,
369 char *data, unsigned int ldata, unsigned int mdata)
370 {
371 unsigned int i;
372 unsigned int this_ldata,this_lparam;
373 unsigned int tot_data=0,tot_param=0;
374 uint16 mid;
375 char *outdata,*outparam;
376
377 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
378 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
379
380 memset(cli->outbuf,'\0',smb_size);
381 cli_set_message(cli->outbuf,19+lsetup,0,True);
382 SCVAL(cli->outbuf,smb_com,SMBnttrans);
383 SSVAL(cli->outbuf,smb_tid, cli->cnum);
384 cli_setup_packet(cli);
385
386 /*
387 * Save the mid we're using. We need this for finding
388 * signing replies.
389 */
390
391 mid = cli->mid;
392
393 outparam = smb_buf(cli->outbuf)+3;
394 outdata = outparam+this_lparam;
395
396 /* primary request */
397 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
398 SCVAL(cli->outbuf,smb_nt_Flags,flags);
399 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
400 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
401 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
402 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
403 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
404 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
405 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
406 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
407 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
408 SIVAL(cli->outbuf,smb_nt_Function, function);
409 for (i=0;i<lsetup;i++) /* setup[] */
410 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
411
412 if (this_lparam) /* param[] */
413 memcpy(outparam,param,this_lparam);
414 if (this_ldata) /* data[] */
415 memcpy(outdata,data,this_ldata);
416
417 cli_setup_bcc(cli, outdata+this_ldata);
418
419 show_msg(cli->outbuf);
420 if (!cli_send_smb(cli)) {
421 return False;
422 }
423
424 /* Note we're in a trans state. Save the sequence
425 * numbers for replies. */
426 client_set_trans_sign_state_on(cli, mid);
427
428 if (this_ldata < ldata || this_lparam < lparam) {
429 /* receive interim response */
430 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
431 client_set_trans_sign_state_off(cli, mid);
432 return(False);
433 }
434
435 tot_data = this_ldata;
436 tot_param = this_lparam;
437
438 while (tot_data < ldata || tot_param < lparam) {
439 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
440 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
441
442 cli_set_message(cli->outbuf,18,0,True);
443 SCVAL(cli->outbuf,smb_com,SMBnttranss);
444
445 /* XXX - these should probably be aligned */
446 outparam = smb_buf(cli->outbuf);
447 outdata = outparam+this_lparam;
448
449 /* secondary request */
450 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
451 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
452 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
453 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
454 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
455 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
456 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
457 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
458 if (this_lparam) /* param[] */
459 memcpy(outparam,param+tot_param,this_lparam);
460 if (this_ldata) /* data[] */
461 memcpy(outdata,data+tot_data,this_ldata);
462 cli_setup_bcc(cli, outdata+this_ldata);
463
464 /*
465 * Save the mid we're using. We need this for finding
466 * signing replies.
467 */
468 mid = cli->mid;
469
470 show_msg(cli->outbuf);
471
472 if (!cli_send_smb(cli)) {
473 client_set_trans_sign_state_off(cli, mid);
474 return False;
475 }
476
477 /* Ensure we use the same mid for the secondaries. */
478 cli->mid = mid;
479
480 tot_data += this_ldata;
481 tot_param += this_lparam;
482 }
483 }
484
485 return(True);
486 }
487
488 /****************************************************************************
489 Receive a SMB nttrans response allocating the necessary memory.
490 ****************************************************************************/
491
492 bool cli_receive_nt_trans(struct cli_state *cli,
493 char **param, unsigned int *param_len,
494 char **data, unsigned int *data_len)
495 {
496 unsigned int total_data=0;
497 unsigned int total_param=0;
498 unsigned int this_data,this_param;
499 uint8 eclass;
500 uint32 ecode;
501 bool ret = False;
502
503 *data_len = *param_len = 0;
504
505 if (!cli_receive_smb(cli)) {
506 return False;
507 }
508
509 show_msg(cli->inbuf);
510
511 /* sanity check */
512 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
513 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
514 CVAL(cli->inbuf,smb_com)));
515 return(False);
516 }
517
518 /*
519 * An NT RPC pipe call can return ERRDOS, ERRmoredata
520 * to a trans call. This is not an error and should not
521 * be treated as such.
522 */
523 if (cli_is_dos_error(cli)) {
524 cli_dos_error(cli, &eclass, &ecode);
525 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
526 goto out;
527 }
528 }
529
530 /*
531 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
532 */
533 if (cli_is_nt_error(cli)) {
534 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
535 NT_STATUS_BUFFER_TOO_SMALL)) {
536 goto out;
537 }
538 }
539
540 /* parse out the lengths */
541 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
542 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
543 /* Only allow 16 megs. */
544 if (total_param > 16*1024*1024) {
545 DEBUG(0,("cli_receive_nt_trans: param buffer too large %d\n",
546 total_param));
547 goto out;
548 }
549 if (total_data > 16*1024*1024) {
550 DEBUG(0,("cli_receive_nt_trans: data buffer too large %d\n",
551 total_data));
552 goto out;
553 }
554
555 /* allocate it */
556 if (total_data) {
557 /* We know adding 2 is safe as total_data is less
558 * than 16mb (above). */
559 *data = (char *)SMB_REALLOC(*data,total_data+2);
560 if (!(*data)) {
561 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
562 goto out;
563 }
564 }
565
566 if (total_param) {
567 /* We know adding 2 is safe as total_param is less
568 * than 16mb (above). */
569 *param = (char *)SMB_REALLOC(*param,total_param+2);
570 if (!(*param)) {
571 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
572 goto out;
573 }
574 }
575
576 while (1) {
577 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
578 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
579
580 if (this_data + *data_len > total_data ||
581 this_param + *param_len > total_param) {
582 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
583 goto out;
584 }
585
586 if (this_data + *data_len < this_data ||
587 this_data + *data_len < *data_len ||
588 this_param + *param_len < this_param ||
589 this_param + *param_len < *param_len) {
590 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
591 goto out;
592 }
593
594 if (this_data) {
595 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
596 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
597
598 if (data_offset_out > total_data ||
599 data_offset_out + this_data > total_data ||
600 data_offset_out + this_data < data_offset_out ||
601 data_offset_out + this_data < this_data) {
602 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
603 goto out;
604 }
605 if (data_offset_in > cli->bufsize ||
606 data_offset_in + this_data > cli->bufsize ||
607 data_offset_in + this_data < data_offset_in ||
608 data_offset_in + this_data < this_data) {
609 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
610 goto out;
611 }
612
613 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
614 }
615
616 if (this_param) {
617 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
618 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
619
620 if (param_offset_out > total_param ||
621 param_offset_out + this_param > total_param ||
622 param_offset_out + this_param < param_offset_out ||
623 param_offset_out + this_param < this_param) {
624 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
625 goto out;
626 }
627 if (param_offset_in > cli->bufsize ||
628 param_offset_in + this_param > cli->bufsize ||
629 param_offset_in + this_param < param_offset_in ||
630 param_offset_in + this_param < this_param) {
631 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
632 goto out;
633 }
634
635 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
636 }
637
638 *data_len += this_data;
639 *param_len += this_param;
640
641 if (total_data <= *data_len && total_param <= *param_len) {
642 ret = True;
643 break;
644 }
645
646 if (!cli_receive_smb(cli)) {
647 goto out;
648 }
649
650 show_msg(cli->inbuf);
651
652 /* sanity check */
653 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
654 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
655 CVAL(cli->inbuf,smb_com)));
656 goto out;
657 }
658 if (cli_is_dos_error(cli)) {
659 cli_dos_error(cli, &eclass, &ecode);
660 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
661 goto out;
662 }
663 }
664 /*
665 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
666 */
667 if (cli_is_nt_error(cli)) {
668 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
669 NT_STATUS_BUFFER_TOO_SMALL)) {
670 goto out;
671 }
672 }
673
674 /* parse out the total lengths again - they can shrink! */
675 if (IVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
676 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
677 if (IVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
678 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
679
680 if (total_data <= *data_len && total_param <= *param_len) {
681 ret = True;
682 break;
683 }
684 }
685
686 out:
687
688 if (ret) {
689 /* Ensure the last 2 bytes of param and data are 2 null
690 * bytes. These are malloc'ed, but not included in any
691 * length counts. This allows cli_XX string reading functions
692 * to safely null terminate. */
693 if (total_data) {
694 SSVAL(*data,total_data,0);
695 }
696 if (total_param) {
697 SSVAL(*param,total_param,0);
698 }
699 }
700
701 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
702 return ret;
703 }
704
705 struct trans_recvblob {
706 uint8_t *data;
707 uint32_t max, total, received;
708 };
709
710 struct cli_trans_state {
711 struct cli_state *cli;
712 struct event_context *ev;
713 uint8_t cmd;
714 uint16_t mid;
715 const char *pipe_name;
716 uint16_t fid;
717 uint16_t function;
718 int flags;
719 uint16_t *setup;
720 uint8_t num_setup, max_setup;
721 uint8_t *param;
722 uint32_t num_param, param_sent;
723 uint8_t *data;
724 uint32_t num_data, data_sent;
725
726 uint8_t num_rsetup;
727 uint16_t *rsetup;
728 struct trans_recvblob rparam;
729 struct trans_recvblob rdata;
730
731 TALLOC_CTX *secondary_request_ctx;
732 };
733
734 static void cli_trans_recv_helper(struct async_req *req);
735
736 static struct async_req *cli_ship_trans(TALLOC_CTX *mem_ctx,
737 struct cli_trans_state *state)
738 {
739 TALLOC_CTX *frame;
740 struct async_req *result = NULL;
741 struct cli_request *cli_req;
742 uint8_t wct;
743 uint16_t *vwv;
744 uint8_t *bytes = NULL;
745 uint16_t param_offset;
746 uint16_t this_param = 0;
747 uint16_t this_data = 0;
748 uint32_t useable_space;
749 uint8_t cmd;
750
751 frame = talloc_stackframe();
752
753 cmd = state->cmd;
754
755 if ((state->param_sent != 0) || (state->data_sent != 0)) {
756 /* The secondary commands are one after the primary ones */
757 cmd += 1;
758 }
759
760 param_offset = smb_size - 4;
761
762 switch (cmd) {
763 case SMBtrans:
764 bytes = TALLOC_ZERO_P(talloc_tos(), uint8_t); /* padding */
765 if (bytes == NULL) {
766 goto fail;
767 }
768 bytes = smb_bytes_push_str(
769 bytes, (state->cli->capabilities & CAP_UNICODE) != 0,
770 state->pipe_name);
771 if (bytes == NULL) {
772 goto fail;
773 }
774 wct = 14 + state->num_setup;
775 param_offset += talloc_get_size(bytes);
776 break;
777 case SMBtrans2:
778 bytes = TALLOC_ARRAY(talloc_tos(), uint8_t, 3); /* padding */
779 if (bytes == NULL) {
780 goto fail;
781 }
782 bytes[0] = 0;
783 bytes[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
784 bytes[2] = ' ';
785 wct = 14 + state->num_setup;
786 param_offset += talloc_get_size(bytes);
787 break;
788 case SMBtranss:
789 wct = 8;
790 break;
791 case SMBtranss2:
792 wct = 9;
793 break;
794 case SMBnttrans:
795 wct = 19 + state->num_setup;
796 break;
797 case SMBnttranss:
798 wct = 18;
799 break;
800 default:
801 goto fail;
802 }
803
804 useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
805
806 if (state->param_sent < state->num_param) {
807 this_param = MIN(state->num_param - state->param_sent,
808 useable_space);
809 }
810
811 if (state->data_sent < state->num_data) {
812 this_data = MIN(state->num_data - state->data_sent,
813 useable_space - this_param);
814 }
815
816 vwv = TALLOC_ARRAY(talloc_tos(), uint16_t, wct);
817 if (vwv == NULL) {
818 goto fail;
819 }
820 param_offset += wct * sizeof(uint16_t);
821
822 DEBUG(10, ("num_setup=%u, max_setup=%u, "
823 "param_total=%u, this_param=%u, max_param=%u, "
824 "data_total=%u, this_data=%u, max_data=%u, "
825 "param_offset=%u, param_disp=%u, data_disp=%u\n",
826 (unsigned)state->num_setup, (unsigned)state->max_setup,
827 (unsigned)state->num_param, (unsigned)this_param,
828 (unsigned)state->rparam.max,
829 (unsigned)state->num_data, (unsigned)this_data,
830 (unsigned)state->rdata.max,
831 (unsigned)param_offset,
832 (unsigned)state->param_sent, (unsigned)state->data_sent));
833
834 switch (cmd) {
835 case SMBtrans:
836 case SMBtrans2:
837 SSVAL(vwv + 0, 0, state->num_param);
838 SSVAL(vwv + 1, 0, state->num_data);
839 SSVAL(vwv + 2, 0, state->rparam.max);
840 SSVAL(vwv + 3, 0, state->rdata.max);
841 SCVAL(vwv + 4, 0, state->max_setup);
842 SCVAL(vwv + 4, 1, 0); /* reserved */
843 SSVAL(vwv + 5, 0, state->flags);
844 SIVAL(vwv + 6, 0, 0); /* timeout */
845 SSVAL(vwv + 8, 0, 0); /* reserved */
846 SSVAL(vwv + 9, 0, this_param);
847 SSVAL(vwv +10, 0, param_offset);
848 SSVAL(vwv +11, 0, this_data);
849 SSVAL(vwv +12, 0, param_offset + this_param);
850 SCVAL(vwv +13, 0, state->num_setup);
851 SCVAL(vwv +13, 1, 0); /* reserved */
852 memcpy(vwv + 14, state->setup,
853 sizeof(uint16_t) * state->num_setup);
854 break;
855 case SMBtranss:
856 case SMBtranss2:
857 SSVAL(vwv + 0, 0, state->num_param);
858 SSVAL(vwv + 1, 0, state->num_data);
859 SSVAL(vwv + 2, 0, this_param);
860 SSVAL(vwv + 3, 0, param_offset);
861 SSVAL(vwv + 4, 0, state->param_sent);
862 SSVAL(vwv + 5, 0, this_data);
863 SSVAL(vwv + 6, 0, param_offset + this_param);
864 SSVAL(vwv + 7, 0, state->data_sent);
865 if (cmd == SMBtranss2) {
866 SSVAL(vwv + 8, 0, state->fid);
867 }
868 break;
869 case SMBnttrans:
870 SCVAL(vwv, 0, state->max_setup);
871 SSVAL(vwv, 1, 0); /* reserved */
872 SIVAL(vwv, 3, state->num_param);
873 SIVAL(vwv, 7, state->num_data);
874 SIVAL(vwv, 11, state->rparam.max);
875 SIVAL(vwv, 15, state->rdata.max);
876 SIVAL(vwv, 19, this_param);
877 SIVAL(vwv, 23, param_offset);
878 SIVAL(vwv, 27, this_data);
879 SIVAL(vwv, 31, param_offset + this_param);
880 SCVAL(vwv, 35, state->num_setup);
881 SSVAL(vwv, 36, state->function);
882 memcpy(vwv + 19, state->setup,
883 sizeof(uint16_t) * state->num_setup);
884 break;
885 case SMBnttranss:
886 SSVAL(vwv, 0, 0); /* reserved */
887 SCVAL(vwv, 2, 0); /* reserved */
888 SIVAL(vwv, 3, state->num_param);
889 SIVAL(vwv, 7, state->num_data);
890 SIVAL(vwv, 11, this_param);
891 SIVAL(vwv, 15, param_offset);
892 SIVAL(vwv, 19, state->param_sent);
893 SIVAL(vwv, 23, this_data);
894 SIVAL(vwv, 27, param_offset + this_param);
895 SIVAL(vwv, 31, state->data_sent);
896 SCVAL(vwv, 35, 0); /* reserved */
897 break;
898 }
899
900 bytes = (uint8_t *)talloc_append_blob(
901 talloc_tos(), bytes,
902 data_blob_const(state->param + state->param_sent, this_param));
903 if (bytes == NULL) {
904 goto fail;
905 }
906 state->param_sent += this_param;
907
908 bytes = (uint8_t *)talloc_append_blob(
909 talloc_tos(), bytes,
910 data_blob_const(state->data + state->data_sent, this_data));
911 if (bytes == NULL) {
912 goto fail;
913 }
914 state->data_sent += this_data;
915
916 if ((cmd == SMBtrans) || (cmd == SMBtrans2) || (cmd == SMBnttrans)) {
917 /*
918 * Primary request, retrieve our mid
919 */
920 result = cli_request_send(mem_ctx, state->ev, state->cli,
921 cmd, 0, wct, vwv, 0,
922 talloc_get_size(bytes), bytes);
923 if (result == NULL) {
924 goto fail;
925 }
926 cli_req = talloc_get_type_abort(result->private_data,
927 struct cli_request);
928 state->mid = cli_req->mid;
929 } else {
930 uint16_t num_bytes = talloc_get_size(bytes);
931 /*
932 * Secondary request, we have to fix up the mid. Thus we do
933 * the chain_cork/chain/uncork ourselves.
934 */
935 if (!cli_chain_cork(state->cli, state->ev,
936 wct * sizeof(uint16_t) + num_bytes + 3)) {
937 goto fail;
938 }
939 result = cli_request_send(mem_ctx, state->ev, state->cli, cmd,
940 0, wct, vwv, 0, num_bytes, bytes);
941 if (result == NULL) {
942 goto fail;
943 }
944 cli_req = talloc_get_type_abort(result->private_data,
945 struct cli_request);
946 cli_req->recv_helper.fn = cli_trans_recv_helper;
947 cli_req->recv_helper.priv = state;
948 cli_req->mid = state->mid;
949 client_set_trans_sign_state_off(state->cli, state->mid);
950 cli_chain_uncork(state->cli);
951 }
952
953 client_set_trans_sign_state_on(state->cli, state->mid);
954
955 fail:
956 TALLOC_FREE(frame);
957 return result;
958 }
959
960 static void cli_trans_ship_rest(struct async_req *req,
961 struct cli_trans_state *state)
962 {
963 state->secondary_request_ctx = talloc_new(state);
964 if (state->secondary_request_ctx == NULL) {
965 async_req_error(req, NT_STATUS_NO_MEMORY);
966 return;
967 }
968
969 while ((state->param_sent < state->num_param)
970 || (state->data_sent < state->num_data)) {
971 struct async_req *cli_req;
972
973 cli_req = cli_ship_trans(state->secondary_request_ctx, state);
974 if (cli_req == NULL) {
975 async_req_error(req, NT_STATUS_NO_MEMORY);
976 return;
977 }
978 }
979 }
980
981 static NTSTATUS cli_pull_trans(struct async_req *req,
982 struct cli_request *cli_req,
983 uint8_t smb_cmd, bool expect_first_reply,
984 uint8_t *pnum_setup, uint16_t **psetup,
985 uint32_t *ptotal_param, uint32_t *pnum_param,
986 uint32_t *pparam_disp, uint8_t **pparam,
987 uint32_t *ptotal_data, uint32_t *pnum_data,
988 uint32_t *pdata_disp, uint8_t **pdata)
989 {
990 uint32_t param_ofs, data_ofs;
991 uint8_t wct;
992 uint16_t *vwv;
993 uint16_t num_bytes;
994 uint8_t *bytes;
995 NTSTATUS status;
996
997 status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
998
999 /*
1000 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1001 * !NT_STATUS_IS_OK(status) here.
1002 */
1003
1004 if (NT_STATUS_IS_ERR(status)) {
1005 return status;
1006 }
1007
1008 if (expect_first_reply) {
1009 if ((wct != 0) || (num_bytes != 0)) {
1010 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1011 }
1012 return NT_STATUS_OK;
1013 }
1014
1015 switch (smb_cmd) {
1016 case SMBtrans:
1017 case SMBtrans2:
1018 if (wct < 10) {
1019 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1020 }
1021 *ptotal_param = SVAL(vwv + 0, 0);
1022 *ptotal_data = SVAL(vwv + 1, 0);
1023 *pnum_param = SVAL(vwv + 3, 0);
1024 param_ofs = SVAL(vwv + 4, 0);
1025 *pparam_disp = SVAL(vwv + 5, 0);
1026 *pnum_data = SVAL(vwv + 6, 0);
1027 data_ofs = SVAL(vwv + 7, 0);
1028 *pdata_disp = SVAL(vwv + 8, 0);
1029 *pnum_setup = CVAL(vwv + 9, 0);
1030 if (wct < 10 + (*pnum_setup)) {
1031 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1032 }
1033 *psetup = vwv + 10;
1034
1035 break;
1036 case SMBnttrans:
1037 if (wct < 18) {
1038 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1039 }
1040 *ptotal_param = IVAL(vwv, 3);
1041 *ptotal_data = IVAL(vwv, 7);
1042 *pnum_param = IVAL(vwv, 11);
1043 param_ofs = IVAL(vwv, 15);
1044 *pparam_disp = IVAL(vwv, 19);
1045 *pnum_data = IVAL(vwv, 23);
1046 data_ofs = IVAL(vwv, 27);
1047 *pdata_disp = IVAL(vwv, 31);
1048 *pnum_setup = CVAL(vwv, 35);
1049 *psetup = vwv + 18;
1050 break;
1051
1052 default:
1053 return NT_STATUS_INTERNAL_ERROR;
1054 }
1055
1056 /*
1057 * Check for buffer overflows. data_ofs needs to be checked against
1058 * the incoming buffer length, data_disp against the total
1059 * length. Likewise for param_ofs/param_disp.
1060 */
1061
1062 if (trans_oob(smb_len(cli_req->inbuf), param_ofs, *pnum_param)
1063 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
1064 || trans_oob(smb_len(cli_req->inbuf), data_ofs, *pnum_data)
1065 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
1066 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1067 }
1068
1069 *pparam = (uint8_t *)cli_req->inbuf + 4 + param_ofs;
1070 *pdata = (uint8_t *)cli_req->inbuf + 4 + data_ofs;
1071
1072 return NT_STATUS_OK;
1073 }
1074
1075 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
1076 struct trans_recvblob *blob,
1077 uint32_t total, uint32_t thistime,
1078 uint8_t *buf, uint32_t displacement)
1079 {
1080 if (blob->data == NULL) {
1081 if (total > blob->max) {
1082 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1083 }
1084 blob->total = total;
1085 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
1086 if (blob->data == NULL) {
1087 return NT_STATUS_NO_MEMORY;
1088 }
1089 }
1090
1091 if (total > blob->total) {
1092 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1093 }
1094
1095 if (thistime) {
1096 memcpy(blob->data + displacement, buf, thistime);
1097 blob->received += thistime;
1098 }
1099
1100 return NT_STATUS_OK;
1101 }
1102
1103 static void cli_trans_recv_helper(struct async_req *req)
1104 {
1105 struct cli_request *cli_req = talloc_get_type_abort(
1106 req->private_data, struct cli_request);
1107 struct cli_trans_state *state = talloc_get_type_abort(
1108 cli_req->recv_helper.priv, struct cli_trans_state);
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 bool sent_all;
1120 NTSTATUS status;
1121
1122 sent_all = (state->param_sent == state->num_param)
1123 && (state->data_sent == state->num_data);
1124
1125 status = cli_pull_trans(
1126 req, cli_req, state->cmd, !sent_all, &num_setup, &setup,
1127 &total_param, &num_param, &param_disp, &param,
1128 &total_data, &num_data, &data_disp, &data);
1129
1130 /*
1131 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1132 * !NT_STATUS_IS_OK(status) here.
1133 */
1134
1135 if (NT_STATUS_IS_ERR(status)) {
1136 async_req_error(req, status);
1137 return;
1138 }
1139
1140 if (!sent_all) {
1141 cli_trans_ship_rest(req, state);
1142 return;
1143 }
1144
1145 /*
1146 * We've just received a real response. This means that we don't need
1147 * the secondary cli_request structures anymore, they have all been
1148 * shipped to the server.
1149 */
1150 TALLOC_FREE(state->secondary_request_ctx);
1151
1152 if (num_setup != 0) {
1153 TALLOC_FREE(state->rsetup);
1154 state->rsetup = (uint16_t *)TALLOC_MEMDUP(
1155 state, setup, sizeof(uint16_t) * num_setup);
1156 if (state->rsetup == NULL) {
1157 async_req_error(req, NT_STATUS_NO_MEMORY);
1158 return;
1159 }
1160 }
1161
1162 status = cli_trans_pull_blob(
1163 state, &state->rparam, total_param, num_param, param,
1164 param_disp);
1165
1166 if (!NT_STATUS_IS_OK(status)) {
1167 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
1168 async_req_error(req, status);
1169 return;
1170 }
1171
1172 status = cli_trans_pull_blob(
1173 state, &state->rdata, total_data, num_data, data,
1174 data_disp);
1175
1176 if (!NT_STATUS_IS_OK(status)) {
1177 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
1178 async_req_error(req, status);
1179 return;
1180 }
1181
1182 if ((state->rparam.total == state->rparam.received)
1183 && (state->rdata.total == state->rdata.received)) {
1184 client_set_trans_sign_state_off(state->cli, state->mid);
1185 async_req_done(req);
1186 }
1187 }
1188
1189 struct async_req *cli_trans_send(
1190 TALLOC_CTX *mem_ctx, struct event_context *ev,
1191 struct cli_state *cli, uint8_t trans_cmd,
1192 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
1193 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1194 uint8_t *param, uint32_t num_param, uint32_t max_param,
1195 uint8_t *data, uint32_t num_data, uint32_t max_data)
1196 {
1197 struct async_req *req;
1198 struct cli_request *cli_req;
1199 struct cli_trans_state *state;
1200
1201 /*
1202 * We can't use it in a chained request chain, we'd get the offset
1203 * calculations wrong.
1204 */
1205
1206 if (cli_in_chain(cli)) {
1207 return NULL;
1208 }
1209
1210 if ((trans_cmd == SMBtrans) || (trans_cmd == SMBtrans2)) {
1211 if ((num_param > 0xffff) || (max_param > 0xffff)
1212 || (num_data > 0xffff) || (max_data > 0xffff)) {
1213 DEBUG(3, ("Attempt to send invalid trans2 request "
1214 "(setup %u, params %u/%u, data %u/%u)\n",
1215 (unsigned)num_setup,
1216 (unsigned)num_param, (unsigned)max_param,
1217 (unsigned)num_data, (unsigned)max_data));
1218 return NULL;
1219 }
1220 }
1221
1222 state = talloc(mem_ctx, struct cli_trans_state);
1223 if (state == NULL) {
1224 goto nomem;
1225 }
1226
1227 state->cli = cli;
1228 state->ev = ev;
1229 state->cmd = trans_cmd;
1230 state->num_rsetup = 0;
1231 state->rsetup = NULL;
1232 ZERO_STRUCT(state->rparam);
1233 ZERO_STRUCT(state->rdata);
1234 state->secondary_request_ctx = NULL;
1235
1236 if (trans_cmd == SMBtrans) {
1237 state->pipe_name = talloc_strdup(state, pipe_name);
1238 if (state->pipe_name == NULL) {
1239 goto nomem;
1240 }
1241 }
1242 if (trans_cmd == SMBtrans2) {
1243 state->fid = fid;
1244 }
1245 if (trans_cmd == SMBnttrans) {
1246 state->function = function;
1247 }
1248
1249 state->flags = flags;
1250
1251 if (setup != NULL) {
1252 state->setup = (uint16_t *)TALLOC_MEMDUP(
1253 state, setup, sizeof(*setup) * num_setup);
1254 if (state->setup == NULL) {
1255 goto nomem;
1256 }
1257 state->num_setup = num_setup;
1258 } else {
1259 state->setup = NULL;
1260 state->num_setup = 0;
1261 }
1262
1263 state->max_setup = max_setup;
1264
1265 if (param != NULL) {
1266 state->param = (uint8_t *)TALLOC_MEMDUP(state, param,
1267 num_param);
1268 if (state->param == NULL) {
1269 goto nomem;
1270 }
1271 state->num_param = num_param;
1272 } else {
1273 state->param = NULL;
1274 state->num_param = 0;
1275 }
1276
1277 state->param_sent = 0;
1278 state->rparam.max = max_param;
1279
1280 if (data != NULL) {
1281 state->data = (uint8_t *)TALLOC_MEMDUP(state, data, num_data);
1282 if (state->data == NULL) {
1283 goto nomem;
1284 }
1285 state->num_data = num_data;
1286 } else {
1287 state->data = NULL;
1288 state->num_data = 0;
1289 }
1290
1291 state->data_sent = 0;
1292 state->rdata.max = max_data;
1293
1294 req = cli_ship_trans(state, state);
1295 if (req == NULL) {
1296 goto nomem;
1297 }
1298
1299 cli_req = talloc_get_type_abort(req->private_data, struct cli_request);
1300 cli_req->recv_helper.fn = cli_trans_recv_helper;
1301 cli_req->recv_helper.priv = state;
1302
1303 return req;
1304
1305 nomem:
1306 TALLOC_FREE(state);
1307 return NULL;
1308 }
1309
1310 NTSTATUS cli_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
1311 uint16_t **setup, uint8_t *num_setup,
1312 uint8_t **param, uint32_t *num_param,
1313 uint8_t **data, uint32_t *num_data)
1314 {
1315 struct cli_request *cli_req = talloc_get_type_abort(
1316 req->private_data, struct cli_request);
1317 struct cli_trans_state *state = talloc_get_type_abort(
1318 cli_req->recv_helper.priv, struct cli_trans_state);
1319 NTSTATUS status;
1320
1321 if (async_req_is_error(req, &status)) {
1322 return status;
1323 }
1324
1325 if (setup != NULL) {
1326 *setup = talloc_move(mem_ctx, &state->rsetup);
1327 *num_setup = state->num_rsetup;
1328 } else {
1329 TALLOC_FREE(state->rsetup);
1330 }
1331
1332 if (param != NULL) {
1333 *param = talloc_move(mem_ctx, &state->rparam.data);
1334 *num_param = state->rparam.total;
1335 } else {
1336 TALLOC_FREE(state->rparam.data);
1337 }
1338
1339 if (data != NULL) {
1340 *data = talloc_move(mem_ctx, &state->rdata.data);
1341 *num_data = state->rdata.total;
1342 } else {
1343 TALLOC_FREE(state->rdata.data);
1344 }
1345
1346 return NT_STATUS_OK;
1347 }
1348
1349 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
1350 uint8_t trans_cmd,
1351 const char *pipe_name, uint16_t fid, uint16_t function,
1352 int flags,
1353 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1354 uint8_t *param, uint32_t num_param, uint32_t max_param,
1355 uint8_t *data, uint32_t num_data, uint32_t max_data,
1356 uint16_t **rsetup, uint8_t *num_rsetup,
1357 uint8_t **rparam, uint32_t *num_rparam,
1358 uint8_t **rdata, uint32_t *num_rdata)
1359 {
1360 TALLOC_CTX *frame = talloc_stackframe();
1361 struct event_context *ev;
1362 struct async_req *req;
1363 NTSTATUS status = NT_STATUS_NO_MEMORY;
1364
1365 if (cli->fd_event != NULL) {
1366 /*
1367 * Can't use sync call while an async call is in flight
1368 */
1369 cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
1370 goto fail;
1371 }
1372
1373 ev = event_context_init(frame);
1374 if (ev == NULL) {
1375 goto fail;
1376 }
1377
1378 req = cli_trans_send(frame, ev, cli, trans_cmd,
1379 pipe_name, fid, function, flags,
1380 setup, num_setup, max_setup,
1381 param, num_param, max_param,
1382 data, num_data, max_data);
1383 if (req == NULL) {
1384 goto fail;
1385 }
1386
1387 while (req->state < ASYNC_REQ_DONE) {
1388 event_loop_once(ev);
1389 }
1390
1391 status = cli_trans_recv(req, mem_ctx, rsetup, num_rsetup,
1392 rparam, num_rparam, rdata, num_rdata);
1393 fail:
1394 TALLOC_FREE(frame);
1395 return status;
1396 }