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r4904: sync up with 3.0 for 3.0.11pre2
[Samba.git] / source / libsmb / clitrans.c
blob3f1afa75d69e01f4cb63ce66ccd597259306d908
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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #define NO_SYSLOG
22
23 #include "includes.h"
24
25
26 /****************************************************************************
27 Send a SMB trans or trans2 request.
28 ****************************************************************************/
29
30 BOOL cli_send_trans(struct cli_state *cli, int trans,
31 const char *pipe_name,
32 int fid, int flags,
33 uint16 *setup, unsigned int lsetup, unsigned int msetup,
34 const char *param, unsigned int lparam, unsigned int mparam,
35 const char *data, unsigned int ldata, unsigned int mdata)
36 {
37 unsigned int i;
38 unsigned int this_ldata,this_lparam;
39 unsigned int tot_data=0,tot_param=0;
40 char *outdata,*outparam;
41 char *p;
42 int pipe_name_len=0;
43 uint16 mid;
44
45 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
46 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
47
48 memset(cli->outbuf,'\0',smb_size);
49 set_message(cli->outbuf,14+lsetup,0,True);
50 SCVAL(cli->outbuf,smb_com,trans);
51 SSVAL(cli->outbuf,smb_tid, cli->cnum);
52 cli_setup_packet(cli);
53
54 /*
55 * Save the mid we're using. We need this for finding
56 * signing replies.
57 */
58
59 mid = cli->mid;
60
61 if (pipe_name) {
62 pipe_name_len = clistr_push(cli, smb_buf(cli->outbuf), pipe_name, -1, STR_TERMINATE);
63 }
64
65 outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len : 3);
66 outdata = outparam+this_lparam;
67
68 /* primary request */
69 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
70 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
71 SSVAL(cli->outbuf,smb_mprcnt,mparam); /* mprcnt */
72 SSVAL(cli->outbuf,smb_mdrcnt,mdata); /* mdrcnt */
73 SCVAL(cli->outbuf,smb_msrcnt,msetup); /* msrcnt */
74 SSVAL(cli->outbuf,smb_flags,flags); /* flags */
75 SIVAL(cli->outbuf,smb_timeout,0); /* timeout */
76 SSVAL(cli->outbuf,smb_pscnt,this_lparam); /* pscnt */
77 SSVAL(cli->outbuf,smb_psoff,smb_offset(outparam,cli->outbuf)); /* psoff */
78 SSVAL(cli->outbuf,smb_dscnt,this_ldata); /* dscnt */
79 SSVAL(cli->outbuf,smb_dsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
80 SCVAL(cli->outbuf,smb_suwcnt,lsetup); /* suwcnt */
81 for (i=0;i<lsetup;i++) /* setup[] */
82 SSVAL(cli->outbuf,smb_setup+i*2,setup[i]);
83 p = smb_buf(cli->outbuf);
84 if (trans != SMBtrans) {
85 *p++ = 0; /* put in a null smb_name */
86 *p++ = 'D'; *p++ = ' '; /* observed in OS/2 */
87 }
88 if (this_lparam) /* param[] */
89 memcpy(outparam,param,this_lparam);
90 if (this_ldata) /* data[] */
91 memcpy(outdata,data,this_ldata);
92 cli_setup_bcc(cli, outdata+this_ldata);
93
94 show_msg(cli->outbuf);
95
96 if (!cli_send_smb(cli)) {
97 return False;
98 }
99
100 if (this_ldata < ldata || this_lparam < lparam) {
101 /* receive interim response */
102 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
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 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 /*
137 * Save the mid we're using. We need this for finding
138 * signing replies.
139 */
140 mid = cli->mid;
141
142 show_msg(cli->outbuf);
143 if (!cli_send_smb(cli)) {
144 return False;
145 }
146
147 /* Ensure we use the same mid for the secondaries. */
148 cli->mid = mid;
149
150 tot_data += this_ldata;
151 tot_param += this_lparam;
152 }
153 }
154
155 /* Note we're in a trans state. Save the sequence
156 * numbers for replies. */
157
158 cli_signing_trans_start(cli, mid);
159 return(True);
160 }
161
162 /****************************************************************************
163 Receive a SMB trans or trans2 response allocating the necessary memory.
164 ****************************************************************************/
165
166 BOOL cli_receive_trans(struct cli_state *cli,int trans,
167 char **param, unsigned int *param_len,
168 char **data, unsigned int *data_len)
169 {
170 unsigned int total_data=0;
171 unsigned int total_param=0;
172 unsigned int this_data,this_param;
173 NTSTATUS status;
174 char *tdata;
175 char *tparam;
176
177 *data_len = *param_len = 0;
178
179 if (!cli_receive_smb(cli)) {
180 cli_signing_trans_stop(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 cli_signing_trans_stop(cli);
192 return(False);
193 }
194
195 /*
196 * An NT RPC pipe call can return ERRDOS, ERRmoredata
197 * to a trans call. This is not an error and should not
198 * be treated as such.
199 */
200 status = cli_nt_error(cli);
201
202 if (NT_STATUS_IS_ERR(status)) {
203 cli_signing_trans_stop(cli);
204 return False;
205 }
206
207 /* parse out the lengths */
208 total_data = SVAL(cli->inbuf,smb_tdrcnt);
209 total_param = SVAL(cli->inbuf,smb_tprcnt);
210
211 /* allocate it */
212 if (total_data!=0) {
213 tdata = SMB_REALLOC(*data,total_data);
214 if (!tdata) {
215 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
216 cli_signing_trans_stop(cli);
217 return False;
218 }
219 else
220 *data = tdata;
221 }
222
223 if (total_param!=0) {
224 tparam = SMB_REALLOC(*param,total_param);
225 if (!tparam) {
226 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
227 cli_signing_trans_stop(cli);
228 return False;
229 }
230 else
231 *param = tparam;
232 }
233
234 for (;;) {
235 this_data = SVAL(cli->inbuf,smb_drcnt);
236 this_param = SVAL(cli->inbuf,smb_prcnt);
237
238 if (this_data + *data_len > total_data ||
239 this_param + *param_len > total_param) {
240 DEBUG(1,("Data overflow in cli_receive_trans\n"));
241 cli_signing_trans_stop(cli);
242 return False;
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 cli_signing_trans_stop(cli);
251 return False;
252 }
253
254 if (this_data) {
255 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
256 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
257
258 if (data_offset_out > total_data ||
259 data_offset_out + this_data > total_data ||
260 data_offset_out + this_data < data_offset_out ||
261 data_offset_out + this_data < this_data) {
262 DEBUG(1,("Data overflow in cli_receive_trans\n"));
263 cli_signing_trans_stop(cli);
264 return False;
265 }
266 if (data_offset_in > cli->bufsize ||
267 data_offset_in + this_data > cli->bufsize ||
268 data_offset_in + this_data < data_offset_in ||
269 data_offset_in + this_data < this_data) {
270 DEBUG(1,("Data overflow in cli_receive_trans\n"));
271 cli_signing_trans_stop(cli);
272 return False;
273 }
274
275 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
276 }
277 if (this_param) {
278 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
279 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
280
281 if (param_offset_out > total_param ||
282 param_offset_out + this_param > total_param ||
283 param_offset_out + this_param < param_offset_out ||
284 param_offset_out + this_param < this_param) {
285 DEBUG(1,("Param overflow in cli_receive_trans\n"));
286 cli_signing_trans_stop(cli);
287 return False;
288 }
289 if (param_offset_in > cli->bufsize ||
290 param_offset_in + this_param > cli->bufsize ||
291 param_offset_in + this_param < param_offset_in ||
292 param_offset_in + this_param < this_param) {
293 DEBUG(1,("Param overflow in cli_receive_trans\n"));
294 cli_signing_trans_stop(cli);
295 return False;
296 }
297
298 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
299 }
300 *data_len += this_data;
301 *param_len += this_param;
302
303 if (total_data <= *data_len && total_param <= *param_len)
304 break;
305
306 if (!cli_receive_smb(cli)) {
307 cli_signing_trans_stop(cli);
308 return False;
309 }
310
311 show_msg(cli->inbuf);
312
313 /* sanity check */
314 if (CVAL(cli->inbuf,smb_com) != trans) {
315 DEBUG(0,("Expected %s response, got command 0x%02x\n",
316 trans==SMBtrans?"SMBtrans":"SMBtrans2",
317 CVAL(cli->inbuf,smb_com)));
318 cli_signing_trans_stop(cli);
319 return(False);
320 }
321 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
322 cli_signing_trans_stop(cli);
323 return(False);
324 }
325
326 /* parse out the total lengths again - they can shrink! */
327 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
328 total_data = SVAL(cli->inbuf,smb_tdrcnt);
329 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
330 total_param = SVAL(cli->inbuf,smb_tprcnt);
331
332 if (total_data <= *data_len && total_param <= *param_len)
333 break;
334
335 }
336
337 cli_signing_trans_stop(cli);
338 return(True);
339 }
340
341 /****************************************************************************
342 Send a SMB nttrans request.
343 ****************************************************************************/
344
345 BOOL cli_send_nt_trans(struct cli_state *cli,
346 int function,
347 int flags,
348 uint16 *setup, unsigned int lsetup, unsigned int msetup,
349 char *param, unsigned int lparam, unsigned int mparam,
350 char *data, unsigned int ldata, unsigned int mdata)
351 {
352 unsigned int i;
353 unsigned int this_ldata,this_lparam;
354 unsigned int tot_data=0,tot_param=0;
355 uint16 mid;
356 char *outdata,*outparam;
357
358 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
359 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
360
361 memset(cli->outbuf,'\0',smb_size);
362 set_message(cli->outbuf,19+lsetup,0,True);
363 SCVAL(cli->outbuf,smb_com,SMBnttrans);
364 SSVAL(cli->outbuf,smb_tid, cli->cnum);
365 cli_setup_packet(cli);
366
367 /*
368 * Save the mid we're using. We need this for finding
369 * signing replies.
370 */
371
372 mid = cli->mid;
373
374 outparam = smb_buf(cli->outbuf)+3;
375 outdata = outparam+this_lparam;
376
377 /* primary request */
378 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
379 SCVAL(cli->outbuf,smb_nt_Flags,flags);
380 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
381 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
382 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
383 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
384 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
385 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
386 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
387 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
388 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
389 SIVAL(cli->outbuf,smb_nt_Function, function);
390 for (i=0;i<lsetup;i++) /* setup[] */
391 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
392
393 if (this_lparam) /* param[] */
394 memcpy(outparam,param,this_lparam);
395 if (this_ldata) /* data[] */
396 memcpy(outdata,data,this_ldata);
397
398 cli_setup_bcc(cli, outdata+this_ldata);
399
400 show_msg(cli->outbuf);
401 if (!cli_send_smb(cli)) {
402 return False;
403 }
404
405 if (this_ldata < ldata || this_lparam < lparam) {
406 /* receive interim response */
407 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
408 return(False);
409 }
410
411 tot_data = this_ldata;
412 tot_param = this_lparam;
413
414 while (tot_data < ldata || tot_param < lparam) {
415 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
416 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
417
418 set_message(cli->outbuf,18,0,True);
419 SCVAL(cli->outbuf,smb_com,SMBnttranss);
420
421 /* XXX - these should probably be aligned */
422 outparam = smb_buf(cli->outbuf);
423 outdata = outparam+this_lparam;
424
425 /* secondary request */
426 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
427 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
428 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
429 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
430 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
431 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
432 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
433 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
434 if (this_lparam) /* param[] */
435 memcpy(outparam,param+tot_param,this_lparam);
436 if (this_ldata) /* data[] */
437 memcpy(outdata,data+tot_data,this_ldata);
438 cli_setup_bcc(cli, outdata+this_ldata);
439
440 /*
441 * Save the mid we're using. We need this for finding
442 * signing replies.
443 */
444 mid = cli->mid;
445
446 show_msg(cli->outbuf);
447
448 if (!cli_send_smb(cli)) {
449 return False;
450 }
451
452 /* Ensure we use the same mid for the secondaries. */
453 cli->mid = mid;
454
455 tot_data += this_ldata;
456 tot_param += this_lparam;
457 }
458 }
459
460 /* Note we're in a trans state. Save the sequence
461 * numbers for replies. */
462
463 cli_signing_trans_start(cli, mid);
464 return(True);
465 }
466
467 /****************************************************************************
468 receive a SMB nttrans response allocating the necessary memory
469 ****************************************************************************/
470
471 BOOL cli_receive_nt_trans(struct cli_state *cli,
472 char **param, unsigned int *param_len,
473 char **data, unsigned int *data_len)
474 {
475 unsigned int total_data=0;
476 unsigned int total_param=0;
477 unsigned int this_data,this_param;
478 uint8 eclass;
479 uint32 ecode;
480 char *tdata;
481 char *tparam;
482
483 *data_len = *param_len = 0;
484
485 if (!cli_receive_smb(cli)) {
486 cli_signing_trans_stop(cli);
487 return False;
488 }
489
490 show_msg(cli->inbuf);
491
492 /* sanity check */
493 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
494 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
495 CVAL(cli->inbuf,smb_com)));
496 cli_signing_trans_stop(cli);
497 return(False);
498 }
499
500 /*
501 * An NT RPC pipe call can return ERRDOS, ERRmoredata
502 * to a trans call. This is not an error and should not
503 * be treated as such.
504 */
505 if (cli_is_dos_error(cli)) {
506 cli_dos_error(cli, &eclass, &ecode);
507 if (cli->nt_pipe_fnum[cli->pipe_idx] == 0 || !(eclass == ERRDOS && ecode == ERRmoredata)) {
508 cli_signing_trans_stop(cli);
509 return(False);
510 }
511 }
512
513 /*
514 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
515 */
516 if (cli_is_nt_error(cli)) {
517 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
518 NT_STATUS_BUFFER_TOO_SMALL)) {
519 cli_signing_trans_stop(cli);
520 return(False);
521 }
522 }
523
524 /* parse out the lengths */
525 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
526 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
527
528 /* allocate it */
529 if (total_data) {
530 tdata = SMB_REALLOC(*data,total_data);
531 if (!tdata) {
532 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
533 cli_signing_trans_stop(cli);
534 return False;
535 } else {
536 *data = tdata;
537 }
538 }
539
540 if (total_param) {
541 tparam = SMB_REALLOC(*param,total_param);
542 if (!tparam) {
543 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
544 cli_signing_trans_stop(cli);
545 return False;
546 } else {
547 *param = tparam;
548 }
549 }
550
551 while (1) {
552 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
553 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
554
555 if (this_data + *data_len > total_data ||
556 this_param + *param_len > total_param) {
557 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
558 cli_signing_trans_stop(cli);
559 return False;
560 }
561
562 if (this_data + *data_len < this_data ||
563 this_data + *data_len < *data_len ||
564 this_param + *param_len < this_param ||
565 this_param + *param_len < *param_len) {
566 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
567 cli_signing_trans_stop(cli);
568 return False;
569 }
570
571 if (this_data) {
572 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
573 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
574
575 if (data_offset_out > total_data ||
576 data_offset_out + this_data > total_data ||
577 data_offset_out + this_data < data_offset_out ||
578 data_offset_out + this_data < this_data) {
579 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
580 cli_signing_trans_stop(cli);
581 return False;
582 }
583 if (data_offset_in > cli->bufsize ||
584 data_offset_in + this_data > cli->bufsize ||
585 data_offset_in + this_data < data_offset_in ||
586 data_offset_in + this_data < this_data) {
587 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
588 cli_signing_trans_stop(cli);
589 return False;
590 }
591
592 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
593 }
594
595 if (this_param) {
596 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
597 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
598
599 if (param_offset_out > total_param ||
600 param_offset_out + this_param > total_param ||
601 param_offset_out + this_param < param_offset_out ||
602 param_offset_out + this_param < this_param) {
603 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
604 cli_signing_trans_stop(cli);
605 return False;
606 }
607 if (param_offset_in > cli->bufsize ||
608 param_offset_in + this_param > cli->bufsize ||
609 param_offset_in + this_param < param_offset_in ||
610 param_offset_in + this_param < this_param) {
611 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
612 cli_signing_trans_stop(cli);
613 return False;
614 }
615
616 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
617 }
618
619 *data_len += this_data;
620 *param_len += this_param;
621
622 if (total_data <= *data_len && total_param <= *param_len)
623 break;
624
625 if (!cli_receive_smb(cli)) {
626 cli_signing_trans_stop(cli);
627 return False;
628 }
629
630 show_msg(cli->inbuf);
631
632 /* sanity check */
633 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
634 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
635 CVAL(cli->inbuf,smb_com)));
636 cli_signing_trans_stop(cli);
637 return(False);
638 }
639 if (cli_is_dos_error(cli)) {
640 cli_dos_error(cli, &eclass, &ecode);
641 if(cli->nt_pipe_fnum[cli->pipe_idx] == 0 || !(eclass == ERRDOS && ecode == ERRmoredata)) {
642 cli_signing_trans_stop(cli);
643 return(False);
644 }
645 }
646 /* parse out the total lengths again - they can shrink! */
647 if (SVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
648 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
649 if (SVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
650 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
651
652 if (total_data <= *data_len && total_param <= *param_len)
653 break;
654 }
655
656 cli_signing_trans_stop(cli);
657 return(True);
658 }
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