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s3: Add an async smbsock_connect
[Samba.git] / source3 / libsmb / clitrans.c
blob0266c0307e5a296139cd58b5fcb1f7007a11f0b0
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 cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
116 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
117
118 outparam = smb_buf(cli->outbuf);
119 outdata = outparam+this_lparam;
120
121 /* secondary request */
122 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
123 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
124 SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
125 SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
126 SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
127 SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
128 SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
129 SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
130 if (trans==SMBtrans2)
131 SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
132 if (this_lparam) /* param[] */
133 memcpy(outparam,param+tot_param,this_lparam);
134 if (this_ldata) /* data[] */
135 memcpy(outdata,data+tot_data,this_ldata);
136 cli_setup_bcc(cli, outdata+this_ldata);
137
138 show_msg(cli->outbuf);
139
140 client_set_trans_sign_state_off(cli, mid);
141 cli->mid = mid;
142 if (!cli_send_smb(cli)) {
143 return False;
144 }
145 client_set_trans_sign_state_on(cli, mid);
146
147 tot_data += this_ldata;
148 tot_param += this_lparam;
149 }
150 }
151
152 return(True);
153 }
154
155 /****************************************************************************
156 Receive a SMB trans or trans2 response allocating the necessary memory.
157 ****************************************************************************/
158
159 bool cli_receive_trans(struct cli_state *cli,int trans,
160 char **param, unsigned int *param_len,
161 char **data, unsigned int *data_len)
162 {
163 unsigned int total_data=0;
164 unsigned int total_param=0;
165 unsigned int this_data,this_param;
166 NTSTATUS status;
167 bool ret = False;
168
169 *data_len = *param_len = 0;
170
171 if (!cli_receive_smb(cli)) {
172 return False;
173 }
174
175 show_msg(cli->inbuf);
176
177 /* sanity check */
178 if (CVAL(cli->inbuf,smb_com) != trans) {
179 DEBUG(0,("Expected %s response, got command 0x%02x\n",
180 trans==SMBtrans?"SMBtrans":"SMBtrans2",
181 CVAL(cli->inbuf,smb_com)));
182 return False;
183 }
184
185 /*
186 * An NT RPC pipe call can return ERRDOS, ERRmoredata
187 * to a trans call. This is not an error and should not
188 * be treated as such. Note that STATUS_NO_MORE_FILES is
189 * returned when a trans2 findfirst/next finishes.
190 * When setting up an encrypted transport we can also
191 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
192 *
193 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
194 * "<share>/Users/All Users" is enumerated. This is a special pseudo
195 * folder, and the response does not have parameters (nor a parameter
196 * length).
197 */
198 status = cli_nt_error(cli);
199
200 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
201 if (NT_STATUS_IS_ERR(status) ||
202 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
203 NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
204 goto out;
205 }
206 }
207
208 /* parse out the lengths */
209 total_data = SVAL(cli->inbuf,smb_tdrcnt);
210 total_param = SVAL(cli->inbuf,smb_tprcnt);
211
212 /* allocate it */
213 if (total_data!=0) {
214 /* We know adding 2 is safe as total_data is an
215 * SVAL <= 0xFFFF. */
216 *data = (char *)SMB_REALLOC(*data,total_data+2);
217 if (!(*data)) {
218 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
219 goto out;
220 }
221 }
222
223 if (total_param!=0) {
224 /* We know adding 2 is safe as total_param is an
225 * SVAL <= 0xFFFF. */
226 *param = (char *)SMB_REALLOC(*param,total_param+2);
227 if (!(*param)) {
228 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
229 goto out;
230 }
231 }
232
233 for (;;) {
234 this_data = SVAL(cli->inbuf,smb_drcnt);
235 this_param = SVAL(cli->inbuf,smb_prcnt);
236
237 if (this_data + *data_len > total_data ||
238 this_param + *param_len > total_param) {
239 DEBUG(1,("Data overflow in cli_receive_trans\n"));
240 goto out;
241 }
242
243 if (this_data + *data_len < this_data ||
244 this_data + *data_len < *data_len ||
245 this_param + *param_len < this_param ||
246 this_param + *param_len < *param_len) {
247 DEBUG(1,("Data overflow in cli_receive_trans\n"));
248 goto out;
249 }
250
251 if (this_data) {
252 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
253 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
254
255 if (data_offset_out > total_data ||
256 data_offset_out + this_data > total_data ||
257 data_offset_out + this_data < data_offset_out ||
258 data_offset_out + this_data < this_data) {
259 DEBUG(1,("Data overflow in cli_receive_trans\n"));
260 goto out;
261 }
262 if (data_offset_in > cli->bufsize ||
263 data_offset_in + this_data > cli->bufsize ||
264 data_offset_in + this_data < data_offset_in ||
265 data_offset_in + this_data < this_data) {
266 DEBUG(1,("Data overflow in cli_receive_trans\n"));
267 goto out;
268 }
269
270 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
271 }
272 if (this_param) {
273 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
274 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
275
276 if (param_offset_out > total_param ||
277 param_offset_out + this_param > total_param ||
278 param_offset_out + this_param < param_offset_out ||
279 param_offset_out + this_param < this_param) {
280 DEBUG(1,("Param overflow in cli_receive_trans\n"));
281 goto out;
282 }
283 if (param_offset_in > cli->bufsize ||
284 param_offset_in + this_param > cli->bufsize ||
285 param_offset_in + this_param < param_offset_in ||
286 param_offset_in + this_param < this_param) {
287 DEBUG(1,("Param overflow in cli_receive_trans\n"));
288 goto out;
289 }
290
291 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
292 }
293 *data_len += this_data;
294 *param_len += this_param;
295
296 if (total_data <= *data_len && total_param <= *param_len) {
297 ret = True;
298 break;
299 }
300
301 if (!cli_receive_smb(cli)) {
302 goto out;
303 }
304
305 show_msg(cli->inbuf);
306
307 /* sanity check */
308 if (CVAL(cli->inbuf,smb_com) != trans) {
309 DEBUG(0,("Expected %s response, got command 0x%02x\n",
310 trans==SMBtrans?"SMBtrans":"SMBtrans2",
311 CVAL(cli->inbuf,smb_com)));
312 goto out;
313 }
314 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
315 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
316 goto out;
317 }
318 }
319
320 /* parse out the total lengths again - they can shrink! */
321 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
322 total_data = SVAL(cli->inbuf,smb_tdrcnt);
323 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
324 total_param = SVAL(cli->inbuf,smb_tprcnt);
325
326 if (total_data <= *data_len && total_param <= *param_len) {
327 ret = True;
328 break;
329 }
330 }
331
332 out:
333
334 if (ret) {
335 /* Ensure the last 2 bytes of param and data are 2 null
336 * bytes. These are malloc'ed, but not included in any
337 * length counts. This allows cli_XX string reading functions
338 * to safely null terminate. */
339 if (total_data) {
340 SSVAL(*data,total_data,0);
341 }
342 if (total_param) {
343 SSVAL(*param,total_param,0);
344 }
345 }
346
347 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
348 return ret;
349 }
350
351 /****************************************************************************
352 Send a SMB nttrans request.
353 ****************************************************************************/
354
355 bool cli_send_nt_trans(struct cli_state *cli,
356 int function,
357 int flags,
358 uint16 *setup, unsigned int lsetup, unsigned int msetup,
359 char *param, unsigned int lparam, unsigned int mparam,
360 char *data, unsigned int ldata, unsigned int mdata)
361 {
362 unsigned int i;
363 unsigned int this_ldata,this_lparam;
364 unsigned int tot_data=0,tot_param=0;
365 uint16 mid;
366 char *outdata,*outparam;
367
368 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
369 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
370
371 memset(cli->outbuf,'\0',smb_size);
372 cli_set_message(cli->outbuf,19+lsetup,0,True);
373 SCVAL(cli->outbuf,smb_com,SMBnttrans);
374 SSVAL(cli->outbuf,smb_tid, cli->cnum);
375 cli_setup_packet(cli);
376
377 /*
378 * Save the mid we're using. We need this for finding
379 * signing replies.
380 */
381
382 mid = cli->mid;
383
384 outparam = smb_buf(cli->outbuf)+3;
385 outdata = outparam+this_lparam;
386
387 /* primary request */
388 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
389 SCVAL(cli->outbuf,smb_nt_Flags,flags);
390 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
391 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
392 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
393 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
394 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
395 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
396 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
397 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
398 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
399 SIVAL(cli->outbuf,smb_nt_Function, function);
400 for (i=0;i<lsetup;i++) /* setup[] */
401 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
402
403 if (this_lparam) /* param[] */
404 memcpy(outparam,param,this_lparam);
405 if (this_ldata) /* data[] */
406 memcpy(outdata,data,this_ldata);
407
408 cli_setup_bcc(cli, outdata+this_ldata);
409
410 show_msg(cli->outbuf);
411 if (!cli_send_smb(cli)) {
412 return False;
413 }
414
415 /* Note we're in a trans state. Save the sequence
416 * numbers for replies. */
417 client_set_trans_sign_state_on(cli, mid);
418
419 if (this_ldata < ldata || this_lparam < lparam) {
420 /* receive interim response */
421 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
422 client_set_trans_sign_state_off(cli, mid);
423 return(False);
424 }
425
426 tot_data = this_ldata;
427 tot_param = this_lparam;
428
429 while (tot_data < ldata || tot_param < lparam) {
430 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
431 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
432
433 cli_set_message(cli->outbuf,18,0,True);
434 SCVAL(cli->outbuf,smb_com,SMBnttranss);
435
436 /* XXX - these should probably be aligned */
437 outparam = smb_buf(cli->outbuf);
438 outdata = outparam+this_lparam;
439
440 /* secondary request */
441 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
442 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
443 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
444 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
445 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
446 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
447 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
448 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
449 if (this_lparam) /* param[] */
450 memcpy(outparam,param+tot_param,this_lparam);
451 if (this_ldata) /* data[] */
452 memcpy(outdata,data+tot_data,this_ldata);
453 cli_setup_bcc(cli, outdata+this_ldata);
454
455 show_msg(cli->outbuf);
456
457 client_set_trans_sign_state_off(cli, mid);
458 cli->mid = mid;
459 if (!cli_send_smb(cli)) {
460 return False;
461 }
462 client_set_trans_sign_state_on(cli, mid);
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
487 *data_len = *param_len = 0;
488
489 if (!cli_receive_smb(cli)) {
490 return False;
491 }
492
493 show_msg(cli->inbuf);
494
495 /* sanity check */
496 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
497 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
498 CVAL(cli->inbuf,smb_com)));
499 return(False);
500 }
501
502 /*
503 * An NT RPC pipe call can return ERRDOS, ERRmoredata
504 * to a trans call. This is not an error and should not
505 * be treated as such.
506 */
507 if (cli_is_dos_error(cli)) {
508 cli_dos_error(cli, &eclass, &ecode);
509 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
510 goto out;
511 }
512 }
513
514 /*
515 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
516 */
517 if (cli_is_nt_error(cli)) {
518 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
519 NT_STATUS_BUFFER_TOO_SMALL)) {
520 goto out;
521 }
522 }
523
524 /* parse out the lengths */
525 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
526 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
527 /* Only allow 16 megs. */
528 if (total_param > 16*1024*1024) {
529 DEBUG(0,("cli_receive_nt_trans: param buffer too large %d\n",
530 total_param));
531 goto out;
532 }
533 if (total_data > 16*1024*1024) {
534 DEBUG(0,("cli_receive_nt_trans: data buffer too large %d\n",
535 total_data));
536 goto out;
537 }
538
539 /* allocate it */
540 if (total_data) {
541 /* We know adding 2 is safe as total_data is less
542 * than 16mb (above). */
543 *data = (char *)SMB_REALLOC(*data,total_data+2);
544 if (!(*data)) {
545 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
546 goto out;
547 }
548 }
549
550 if (total_param) {
551 /* We know adding 2 is safe as total_param is less
552 * than 16mb (above). */
553 *param = (char *)SMB_REALLOC(*param,total_param+2);
554 if (!(*param)) {
555 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
556 goto out;
557 }
558 }
559
560 while (1) {
561 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
562 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
563
564 if (this_data + *data_len > total_data ||
565 this_param + *param_len > total_param) {
566 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
567 goto out;
568 }
569
570 if (this_data + *data_len < this_data ||
571 this_data + *data_len < *data_len ||
572 this_param + *param_len < this_param ||
573 this_param + *param_len < *param_len) {
574 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
575 goto out;
576 }
577
578 if (this_data) {
579 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
580 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
581
582 if (data_offset_out > total_data ||
583 data_offset_out + this_data > total_data ||
584 data_offset_out + this_data < data_offset_out ||
585 data_offset_out + this_data < this_data) {
586 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
587 goto out;
588 }
589 if (data_offset_in > cli->bufsize ||
590 data_offset_in + this_data > cli->bufsize ||
591 data_offset_in + this_data < data_offset_in ||
592 data_offset_in + this_data < this_data) {
593 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
594 goto out;
595 }
596
597 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
598 }
599
600 if (this_param) {
601 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
602 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
603
604 if (param_offset_out > total_param ||
605 param_offset_out + this_param > total_param ||
606 param_offset_out + this_param < param_offset_out ||
607 param_offset_out + this_param < this_param) {
608 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
609 goto out;
610 }
611 if (param_offset_in > cli->bufsize ||
612 param_offset_in + this_param > cli->bufsize ||
613 param_offset_in + this_param < param_offset_in ||
614 param_offset_in + this_param < this_param) {
615 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
616 goto out;
617 }
618
619 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
620 }
621
622 *data_len += this_data;
623 *param_len += this_param;
624
625 if (total_data <= *data_len && total_param <= *param_len) {
626 ret = True;
627 break;
628 }
629
630 if (!cli_receive_smb(cli)) {
631 goto out;
632 }
633
634 show_msg(cli->inbuf);
635
636 /* sanity check */
637 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
638 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
639 CVAL(cli->inbuf,smb_com)));
640 goto out;
641 }
642 if (cli_is_dos_error(cli)) {
643 cli_dos_error(cli, &eclass, &ecode);
644 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
645 goto out;
646 }
647 }
648 /*
649 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
650 */
651 if (cli_is_nt_error(cli)) {
652 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
653 NT_STATUS_BUFFER_TOO_SMALL)) {
654 goto out;
655 }
656 }
657
658 /* parse out the total lengths again - they can shrink! */
659 if (IVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
660 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
661 if (IVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
662 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
663
664 if (total_data <= *data_len && total_param <= *param_len) {
665 ret = True;
666 break;
667 }
668 }
669
670 out:
671
672 if (ret) {
673 /* Ensure the last 2 bytes of param and data are 2 null
674 * bytes. These are malloc'ed, but not included in any
675 * length counts. This allows cli_XX string reading functions
676 * to safely null terminate. */
677 if (total_data) {
678 SSVAL(*data,total_data,0);
679 }
680 if (total_param) {
681 SSVAL(*param,total_param,0);
682 }
683 }
684
685 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
686 return ret;
687 }
688
689 struct trans_recvblob {
690 uint8_t *data;
691 uint32_t max, total, received;
692 };
693
694 struct cli_trans_state {
695 struct cli_state *cli;
696 struct event_context *ev;
697 uint8_t cmd;
698 uint16_t mid;
699 const char *pipe_name;
700 uint16_t fid;
701 uint16_t function;
702 int flags;
703 uint16_t *setup;
704 uint8_t num_setup, max_setup;
705 uint8_t *param;
706 uint32_t num_param, param_sent;
707 uint8_t *data;
708 uint32_t num_data, data_sent;
709
710 uint8_t num_rsetup;
711 uint16_t *rsetup;
712 struct trans_recvblob rparam;
713 struct trans_recvblob rdata;
714
715 TALLOC_CTX *secondary_request_ctx;
716 };
717
718 static void cli_trans_recv_helper(struct async_req *req);
719
720 static struct async_req *cli_ship_trans(TALLOC_CTX *mem_ctx,
721 struct cli_trans_state *state)
722 {
723 TALLOC_CTX *frame;
724 struct async_req *result = NULL;
725 struct cli_request *cli_req;
726 uint8_t wct;
727 uint16_t *vwv;
728 uint8_t *bytes = NULL;
729 uint16_t param_offset;
730 uint16_t this_param = 0;
731 uint16_t this_data = 0;
732 uint32_t useable_space;
733 uint8_t cmd;
734 uint8_t pad[3];
735
736 frame = talloc_stackframe();
737
738 cmd = state->cmd;
739
740 if ((state->param_sent != 0) || (state->data_sent != 0)) {
741 /* The secondary commands are one after the primary ones */
742 cmd += 1;
743 }
744
745 param_offset = smb_size - 4;
746
747 bytes = TALLOC_ARRAY(talloc_tos(), uint8_t, 0); /* padding */
748 if (bytes == NULL) {
749 goto fail;
750 }
751
752 switch (cmd) {
753 case SMBtrans:
754 pad[0] = 0;
755 bytes = (uint8_t *)talloc_append_blob(talloc_tos(), bytes,
756 data_blob_const(pad, 1));
757 if (bytes == NULL) {
758 goto fail;
759 }
760 bytes = smb_bytes_push_str(bytes, cli_ucs2(state->cli),
761 state->pipe_name,
762 strlen(state->pipe_name)+1, NULL);
763 if (bytes == NULL) {
764 goto fail;
765 }
766 wct = 14 + state->num_setup;
767 param_offset += talloc_get_size(bytes);
768 break;
769 case SMBtrans2:
770 pad[0] = 0;
771 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
772 pad[2] = ' ';
773 bytes = (uint8_t *)talloc_append_blob(talloc_tos(), bytes,
774 data_blob_const(pad, 3));
775 if (bytes == NULL) {
776 goto fail;
777 }
778 wct = 14 + state->num_setup;
779 param_offset += talloc_get_size(bytes);
780 break;
781 case SMBtranss:
782 wct = 8;
783 break;
784 case SMBtranss2:
785 wct = 9;
786 break;
787 case SMBnttrans:
788 wct = 19 + state->num_setup;
789 break;
790 case SMBnttranss:
791 wct = 18;
792 break;
793 default:
794 goto fail;
795 }
796
797 useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
798
799 if (state->param_sent < state->num_param) {
800 this_param = MIN(state->num_param - state->param_sent,
801 useable_space);
802 }
803
804 if (state->data_sent < state->num_data) {
805 this_data = MIN(state->num_data - state->data_sent,
806 useable_space - this_param);
807 }
808
809 vwv = TALLOC_ARRAY(talloc_tos(), uint16_t, wct);
810 if (vwv == NULL) {
811 goto fail;
812 }
813 param_offset += wct * sizeof(uint16_t);
814
815 DEBUG(10, ("num_setup=%u, max_setup=%u, "
816 "param_total=%u, this_param=%u, max_param=%u, "
817 "data_total=%u, this_data=%u, max_data=%u, "
818 "param_offset=%u, param_disp=%u, data_disp=%u\n",
819 (unsigned)state->num_setup, (unsigned)state->max_setup,
820 (unsigned)state->num_param, (unsigned)this_param,
821 (unsigned)state->rparam.max,
822 (unsigned)state->num_data, (unsigned)this_data,
823 (unsigned)state->rdata.max,
824 (unsigned)param_offset,
825 (unsigned)state->param_sent, (unsigned)state->data_sent));
826
827 switch (cmd) {
828 case SMBtrans:
829 case SMBtrans2:
830 SSVAL(vwv + 0, 0, state->num_param);
831 SSVAL(vwv + 1, 0, state->num_data);
832 SSVAL(vwv + 2, 0, state->rparam.max);
833 SSVAL(vwv + 3, 0, state->rdata.max);
834 SCVAL(vwv + 4, 0, state->max_setup);
835 SCVAL(vwv + 4, 1, 0); /* reserved */
836 SSVAL(vwv + 5, 0, state->flags);
837 SIVAL(vwv + 6, 0, 0); /* timeout */
838 SSVAL(vwv + 8, 0, 0); /* reserved */
839 SSVAL(vwv + 9, 0, this_param);
840 SSVAL(vwv +10, 0, param_offset);
841 SSVAL(vwv +11, 0, this_data);
842 SSVAL(vwv +12, 0, param_offset + this_param);
843 SCVAL(vwv +13, 0, state->num_setup);
844 SCVAL(vwv +13, 1, 0); /* reserved */
845 memcpy(vwv + 14, state->setup,
846 sizeof(uint16_t) * state->num_setup);
847 break;
848 case SMBtranss:
849 case SMBtranss2:
850 SSVAL(vwv + 0, 0, state->num_param);
851 SSVAL(vwv + 1, 0, state->num_data);
852 SSVAL(vwv + 2, 0, this_param);
853 SSVAL(vwv + 3, 0, param_offset);
854 SSVAL(vwv + 4, 0, state->param_sent);
855 SSVAL(vwv + 5, 0, this_data);
856 SSVAL(vwv + 6, 0, param_offset + this_param);
857 SSVAL(vwv + 7, 0, state->data_sent);
858 if (cmd == SMBtranss2) {
859 SSVAL(vwv + 8, 0, state->fid);
860 }
861 break;
862 case SMBnttrans:
863 SCVAL(vwv, 0, state->max_setup);
864 SSVAL(vwv, 1, 0); /* reserved */
865 SIVAL(vwv, 3, state->num_param);
866 SIVAL(vwv, 7, state->num_data);
867 SIVAL(vwv, 11, state->rparam.max);
868 SIVAL(vwv, 15, state->rdata.max);
869 SIVAL(vwv, 19, this_param);
870 SIVAL(vwv, 23, param_offset);
871 SIVAL(vwv, 27, this_data);
872 SIVAL(vwv, 31, param_offset + this_param);
873 SCVAL(vwv, 35, state->num_setup);
874 SSVAL(vwv, 36, state->function);
875 memcpy(vwv + 19, state->setup,
876 sizeof(uint16_t) * state->num_setup);
877 break;
878 case SMBnttranss:
879 SSVAL(vwv, 0, 0); /* reserved */
880 SCVAL(vwv, 2, 0); /* reserved */
881 SIVAL(vwv, 3, state->num_param);
882 SIVAL(vwv, 7, state->num_data);
883 SIVAL(vwv, 11, this_param);
884 SIVAL(vwv, 15, param_offset);
885 SIVAL(vwv, 19, state->param_sent);
886 SIVAL(vwv, 23, this_data);
887 SIVAL(vwv, 27, param_offset + this_param);
888 SIVAL(vwv, 31, state->data_sent);
889 SCVAL(vwv, 35, 0); /* reserved */
890 break;
891 }
892
893 bytes = (uint8_t *)talloc_append_blob(
894 talloc_tos(), bytes,
895 data_blob_const(state->param + state->param_sent, this_param));
896 if (bytes == NULL) {
897 goto fail;
898 }
899 state->param_sent += this_param;
900
901 bytes = (uint8_t *)talloc_append_blob(
902 talloc_tos(), bytes,
903 data_blob_const(state->data + state->data_sent, this_data));
904 if (bytes == NULL) {
905 goto fail;
906 }
907 state->data_sent += this_data;
908
909 if ((cmd == SMBtrans) || (cmd == SMBtrans2) || (cmd == SMBnttrans)) {
910 /*
911 * Primary request, retrieve our mid
912 */
913 result = cli_request_send(mem_ctx, state->ev, state->cli,
914 cmd, 0, wct, vwv, 0,
915 talloc_get_size(bytes), bytes);
916 if (result == NULL) {
917 goto fail;
918 }
919 cli_req = talloc_get_type_abort(result->private_data,
920 struct cli_request);
921 state->mid = cli_req->mid;
922 } else {
923 uint16_t num_bytes = talloc_get_size(bytes);
924 /*
925 * Secondary request, we have to fix up the mid. Thus we do
926 * the chain_cork/chain/uncork ourselves.
927 */
928 if (!cli_chain_cork(state->cli, state->ev,
929 wct * sizeof(uint16_t) + num_bytes + 3)) {
930 goto fail;
931 }
932 result = cli_request_send(mem_ctx, state->ev, state->cli, cmd,
933 0, wct, vwv, 0, num_bytes, bytes);
934 if (result == NULL) {
935 goto fail;
936 }
937 cli_req = talloc_get_type_abort(result->private_data,
938 struct cli_request);
939 cli_req->recv_helper.fn = cli_trans_recv_helper;
940 cli_req->recv_helper.priv = state;
941 cli_req->mid = state->mid;
942 client_set_trans_sign_state_off(state->cli, state->mid);
943 cli_chain_uncork(state->cli);
944 }
945
946 client_set_trans_sign_state_on(state->cli, state->mid);
947
948 fail:
949 TALLOC_FREE(frame);
950 return result;
951 }
952
953 static void cli_trans_ship_rest(struct async_req *req,
954 struct cli_trans_state *state)
955 {
956 state->secondary_request_ctx = talloc_new(state);
957 if (state->secondary_request_ctx == NULL) {
958 async_req_nterror(req, NT_STATUS_NO_MEMORY);
959 return;
960 }
961
962 while ((state->param_sent < state->num_param)
963 || (state->data_sent < state->num_data)) {
964 struct async_req *cli_req;
965
966 cli_req = cli_ship_trans(state->secondary_request_ctx, state);
967 if (cli_req == NULL) {
968 async_req_nterror(req, NT_STATUS_NO_MEMORY);
969 return;
970 }
971 }
972 }
973
974 static NTSTATUS cli_pull_trans(struct async_req *req,
975 struct cli_request *cli_req,
976 uint8_t smb_cmd, bool expect_first_reply,
977 uint8_t *pnum_setup, uint16_t **psetup,
978 uint32_t *ptotal_param, uint32_t *pnum_param,
979 uint32_t *pparam_disp, uint8_t **pparam,
980 uint32_t *ptotal_data, uint32_t *pnum_data,
981 uint32_t *pdata_disp, uint8_t **pdata)
982 {
983 uint32_t param_ofs, data_ofs;
984 uint8_t wct;
985 uint16_t *vwv;
986 uint16_t num_bytes;
987 uint8_t *bytes;
988 NTSTATUS status;
989
990 status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
991
992 /*
993 * We can receive something like STATUS_MORE_ENTRIES, so don't use
994 * !NT_STATUS_IS_OK(status) here.
995 */
996
997 if (NT_STATUS_IS_ERR(status)) {
998 return status;
999 }
1000
1001 if (expect_first_reply) {
1002 if ((wct != 0) || (num_bytes != 0)) {
1003 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1004 }
1005 return NT_STATUS_OK;
1006 }
1007
1008 switch (smb_cmd) {
1009 case SMBtrans:
1010 case SMBtrans2:
1011 if (wct < 10) {
1012 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1013 }
1014 *ptotal_param = SVAL(vwv + 0, 0);
1015 *ptotal_data = SVAL(vwv + 1, 0);
1016 *pnum_param = SVAL(vwv + 3, 0);
1017 param_ofs = SVAL(vwv + 4, 0);
1018 *pparam_disp = SVAL(vwv + 5, 0);
1019 *pnum_data = SVAL(vwv + 6, 0);
1020 data_ofs = SVAL(vwv + 7, 0);
1021 *pdata_disp = SVAL(vwv + 8, 0);
1022 *pnum_setup = CVAL(vwv + 9, 0);
1023 if (wct < 10 + (*pnum_setup)) {
1024 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1025 }
1026 *psetup = vwv + 10;
1027
1028 break;
1029 case SMBnttrans:
1030 if (wct < 18) {
1031 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1032 }
1033 *ptotal_param = IVAL(vwv, 3);
1034 *ptotal_data = IVAL(vwv, 7);
1035 *pnum_param = IVAL(vwv, 11);
1036 param_ofs = IVAL(vwv, 15);
1037 *pparam_disp = IVAL(vwv, 19);
1038 *pnum_data = IVAL(vwv, 23);
1039 data_ofs = IVAL(vwv, 27);
1040 *pdata_disp = IVAL(vwv, 31);
1041 *pnum_setup = CVAL(vwv, 35);
1042 *psetup = vwv + 18;
1043 break;
1044
1045 default:
1046 return NT_STATUS_INTERNAL_ERROR;
1047 }
1048
1049 /*
1050 * Check for buffer overflows. data_ofs needs to be checked against
1051 * the incoming buffer length, data_disp against the total
1052 * length. Likewise for param_ofs/param_disp.
1053 */
1054
1055 if (trans_oob(smb_len(cli_req->inbuf), param_ofs, *pnum_param)
1056 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
1057 || trans_oob(smb_len(cli_req->inbuf), data_ofs, *pnum_data)
1058 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
1059 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1060 }
1061
1062 *pparam = (uint8_t *)cli_req->inbuf + 4 + param_ofs;
1063 *pdata = (uint8_t *)cli_req->inbuf + 4 + data_ofs;
1064
1065 return NT_STATUS_OK;
1066 }
1067
1068 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
1069 struct trans_recvblob *blob,
1070 uint32_t total, uint32_t thistime,
1071 uint8_t *buf, uint32_t displacement)
1072 {
1073 if (blob->data == NULL) {
1074 if (total > blob->max) {
1075 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1076 }
1077 blob->total = total;
1078 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
1079 if (blob->data == NULL) {
1080 return NT_STATUS_NO_MEMORY;
1081 }
1082 }
1083
1084 if (total > blob->total) {
1085 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1086 }
1087
1088 if (thistime) {
1089 memcpy(blob->data + displacement, buf, thistime);
1090 blob->received += thistime;
1091 }
1092
1093 return NT_STATUS_OK;
1094 }
1095
1096 static void cli_trans_recv_helper(struct async_req *req)
1097 {
1098 struct cli_request *cli_req = talloc_get_type_abort(
1099 req->private_data, struct cli_request);
1100 struct cli_trans_state *state = talloc_get_type_abort(
1101 cli_req->recv_helper.priv, struct cli_trans_state);
1102 uint8_t num_setup = 0;
1103 uint16_t *setup = NULL;
1104 uint32_t total_param = 0;
1105 uint32_t num_param = 0;
1106 uint32_t param_disp = 0;
1107 uint32_t total_data = 0;
1108 uint32_t num_data = 0;
1109 uint32_t data_disp = 0;
1110 uint8_t *param = NULL;
1111 uint8_t *data = NULL;
1112 bool sent_all;
1113 NTSTATUS status;
1114
1115 sent_all = (state->param_sent == state->num_param)
1116 && (state->data_sent == state->num_data);
1117
1118 status = cli_pull_trans(
1119 req, cli_req, state->cmd, !sent_all, &num_setup, &setup,
1120 &total_param, &num_param, &param_disp, &param,
1121 &total_data, &num_data, &data_disp, &data);
1122
1123 /*
1124 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1125 * !NT_STATUS_IS_OK(status) here.
1126 */
1127
1128 if (NT_STATUS_IS_ERR(status)) {
1129 async_req_nterror(req, status);
1130 return;
1131 }
1132
1133 if (!sent_all) {
1134 cli_trans_ship_rest(req, state);
1135 return;
1136 }
1137
1138 /*
1139 * We've just received a real response. This means that we don't need
1140 * the secondary cli_request structures anymore, they have all been
1141 * shipped to the server.
1142 */
1143 TALLOC_FREE(state->secondary_request_ctx);
1144
1145 if (num_setup != 0) {
1146 TALLOC_FREE(state->rsetup);
1147 state->rsetup = (uint16_t *)TALLOC_MEMDUP(
1148 state, setup, sizeof(uint16_t) * num_setup);
1149 if (state->rsetup == NULL) {
1150 async_req_nterror(req, NT_STATUS_NO_MEMORY);
1151 return;
1152 }
1153 }
1154
1155 status = cli_trans_pull_blob(
1156 state, &state->rparam, total_param, num_param, param,
1157 param_disp);
1158
1159 if (!NT_STATUS_IS_OK(status)) {
1160 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
1161 async_req_nterror(req, status);
1162 return;
1163 }
1164
1165 status = cli_trans_pull_blob(
1166 state, &state->rdata, total_data, num_data, data,
1167 data_disp);
1168
1169 if (!NT_STATUS_IS_OK(status)) {
1170 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
1171 async_req_nterror(req, status);
1172 return;
1173 }
1174
1175 if ((state->rparam.total == state->rparam.received)
1176 && (state->rdata.total == state->rdata.received)) {
1177 client_set_trans_sign_state_off(state->cli, state->mid);
1178 async_req_done(req);
1179 }
1180 }
1181
1182 struct async_req *cli_trans_send(
1183 TALLOC_CTX *mem_ctx, struct event_context *ev,
1184 struct cli_state *cli, uint8_t trans_cmd,
1185 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
1186 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1187 uint8_t *param, uint32_t num_param, uint32_t max_param,
1188 uint8_t *data, uint32_t num_data, uint32_t max_data)
1189 {
1190 struct async_req *req;
1191 struct cli_request *cli_req;
1192 struct cli_trans_state *state;
1193
1194 /*
1195 * We can't use it in a chained request chain, we'd get the offset
1196 * calculations wrong.
1197 */
1198
1199 if (cli_in_chain(cli)) {
1200 return NULL;
1201 }
1202
1203 if ((trans_cmd == SMBtrans) || (trans_cmd == SMBtrans2)) {
1204 if ((num_param > 0xffff) || (max_param > 0xffff)
1205 || (num_data > 0xffff) || (max_data > 0xffff)) {
1206 DEBUG(3, ("Attempt to send invalid trans2 request "
1207 "(setup %u, params %u/%u, data %u/%u)\n",
1208 (unsigned)num_setup,
1209 (unsigned)num_param, (unsigned)max_param,
1210 (unsigned)num_data, (unsigned)max_data));
1211 return NULL;
1212 }
1213 }
1214
1215 state = talloc(mem_ctx, struct cli_trans_state);
1216 if (state == NULL) {
1217 goto nomem;
1218 }
1219
1220 state->cli = cli;
1221 state->ev = ev;
1222 state->cmd = trans_cmd;
1223 state->num_rsetup = 0;
1224 state->rsetup = NULL;
1225 ZERO_STRUCT(state->rparam);
1226 ZERO_STRUCT(state->rdata);
1227 state->secondary_request_ctx = NULL;
1228
1229 if (trans_cmd == SMBtrans) {
1230 state->pipe_name = talloc_strdup(state, pipe_name);
1231 if (state->pipe_name == NULL) {
1232 goto nomem;
1233 }
1234 }
1235 if (trans_cmd == SMBtrans2) {
1236 state->fid = fid;
1237 }
1238 if (trans_cmd == SMBnttrans) {
1239 state->function = function;
1240 }
1241
1242 state->flags = flags;
1243
1244 if (setup != NULL) {
1245 state->setup = (uint16_t *)TALLOC_MEMDUP(
1246 state, setup, sizeof(*setup) * num_setup);
1247 if (state->setup == NULL) {
1248 goto nomem;
1249 }
1250 state->num_setup = num_setup;
1251 } else {
1252 state->setup = NULL;
1253 state->num_setup = 0;
1254 }
1255
1256 state->max_setup = max_setup;
1257
1258 if (param != NULL) {
1259 state->param = (uint8_t *)TALLOC_MEMDUP(state, param,
1260 num_param);
1261 if (state->param == NULL) {
1262 goto nomem;
1263 }
1264 state->num_param = num_param;
1265 } else {
1266 state->param = NULL;
1267 state->num_param = 0;
1268 }
1269
1270 state->param_sent = 0;
1271 state->rparam.max = max_param;
1272
1273 if (data != NULL) {
1274 state->data = (uint8_t *)TALLOC_MEMDUP(state, data, num_data);
1275 if (state->data == NULL) {
1276 goto nomem;
1277 }
1278 state->num_data = num_data;
1279 } else {
1280 state->data = NULL;
1281 state->num_data = 0;
1282 }
1283
1284 state->data_sent = 0;
1285 state->rdata.max = max_data;
1286
1287 req = cli_ship_trans(state, state);
1288 if (req == NULL) {
1289 goto nomem;
1290 }
1291
1292 cli_req = talloc_get_type_abort(req->private_data, struct cli_request);
1293 cli_req->recv_helper.fn = cli_trans_recv_helper;
1294 cli_req->recv_helper.priv = state;
1295
1296 return req;
1297
1298 nomem:
1299 TALLOC_FREE(state);
1300 return NULL;
1301 }
1302
1303 NTSTATUS cli_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
1304 uint16_t **setup, uint8_t *num_setup,
1305 uint8_t **param, uint32_t *num_param,
1306 uint8_t **data, uint32_t *num_data)
1307 {
1308 struct cli_request *cli_req = talloc_get_type_abort(
1309 req->private_data, struct cli_request);
1310 struct cli_trans_state *state = talloc_get_type_abort(
1311 cli_req->recv_helper.priv, struct cli_trans_state);
1312 NTSTATUS status;
1313
1314 if (async_req_is_nterror(req, &status)) {
1315 return status;
1316 }
1317
1318 if (setup != NULL) {
1319 *setup = talloc_move(mem_ctx, &state->rsetup);
1320 *num_setup = state->num_rsetup;
1321 } else {
1322 TALLOC_FREE(state->rsetup);
1323 }
1324
1325 if (param != NULL) {
1326 *param = talloc_move(mem_ctx, &state->rparam.data);
1327 *num_param = state->rparam.total;
1328 } else {
1329 TALLOC_FREE(state->rparam.data);
1330 }
1331
1332 if (data != NULL) {
1333 *data = talloc_move(mem_ctx, &state->rdata.data);
1334 *num_data = state->rdata.total;
1335 } else {
1336 TALLOC_FREE(state->rdata.data);
1337 }
1338
1339 return NT_STATUS_OK;
1340 }
1341
1342 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
1343 uint8_t trans_cmd,
1344 const char *pipe_name, uint16_t fid, uint16_t function,
1345 int flags,
1346 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1347 uint8_t *param, uint32_t num_param, uint32_t max_param,
1348 uint8_t *data, uint32_t num_data, uint32_t max_data,
1349 uint16_t **rsetup, uint8_t *num_rsetup,
1350 uint8_t **rparam, uint32_t *num_rparam,
1351 uint8_t **rdata, uint32_t *num_rdata)
1352 {
1353 TALLOC_CTX *frame = talloc_stackframe();
1354 struct event_context *ev;
1355 struct async_req *req;
1356 NTSTATUS status = NT_STATUS_NO_MEMORY;
1357
1358 if (cli->fd_event != NULL) {
1359 /*
1360 * Can't use sync call while an async call is in flight
1361 */
1362 cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
1363 goto fail;
1364 }
1365
1366 ev = event_context_init(frame);
1367 if (ev == NULL) {
1368 goto fail;
1369 }
1370
1371 req = cli_trans_send(frame, ev, cli, trans_cmd,
1372 pipe_name, fid, function, flags,
1373 setup, num_setup, max_setup,
1374 param, num_param, max_param,
1375 data, num_data, max_data);
1376 if (req == NULL) {
1377 goto fail;
1378 }
1379
1380 while (req->state < ASYNC_REQ_DONE) {
1381 event_loop_once(ev);
1382 }
1383
1384 status = cli_trans_recv(req, mem_ctx, rsetup, num_rsetup,
1385 rparam, num_rparam, rdata, num_rdata);
1386 fail:
1387 TALLOC_FREE(frame);
1388 return status;
1389 }
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