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r23784: use the GPLv3 boilerplate as recommended by the FSF and the license text
[Samba/bb.git] / source / libsmb / clitrans.c
blob752983377cac3ca315044d0ea86ca52d8819f9f2
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 set_message(NULL,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 set_message(NULL,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 /*
139 * Save the mid we're using. We need this for finding
140 * signing replies.
141 */
142 mid = cli->mid;
143
144 show_msg(cli->outbuf);
145 if (!cli_send_smb(cli)) {
146 client_set_trans_sign_state_off(cli, mid);
147 return False;
148 }
149
150 /* Ensure we use the same mid for the secondaries. */
151 cli->mid = mid;
152
153 tot_data += this_ldata;
154 tot_param += this_lparam;
155 }
156 }
157
158 return(True);
159 }
160
161 /****************************************************************************
162 Receive a SMB trans or trans2 response allocating the necessary memory.
163 ****************************************************************************/
164
165 BOOL cli_receive_trans(struct cli_state *cli,int trans,
166 char **param, unsigned int *param_len,
167 char **data, unsigned int *data_len)
168 {
169 unsigned int total_data=0;
170 unsigned int total_param=0;
171 unsigned int this_data,this_param;
172 NTSTATUS status;
173 BOOL ret = False;
174
175 *data_len = *param_len = 0;
176
177 if (!cli_receive_smb(cli)) {
178 return False;
179 }
180
181 show_msg(cli->inbuf);
182
183 /* sanity check */
184 if (CVAL(cli->inbuf,smb_com) != trans) {
185 DEBUG(0,("Expected %s response, got command 0x%02x\n",
186 trans==SMBtrans?"SMBtrans":"SMBtrans2",
187 CVAL(cli->inbuf,smb_com)));
188 return False;
189 }
190
191 /*
192 * An NT RPC pipe call can return ERRDOS, ERRmoredata
193 * to a trans call. This is not an error and should not
194 * be treated as such. Note that STATUS_NO_MORE_FILES is
195 * returned when a trans2 findfirst/next finishes.
196 * When setting up an encrypted transport we can also
197 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
198 *
199 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
200 * "<share>/Users/All Users" is enumerated. This is a special pseudo
201 * folder, and the response does not have parameters (nor a parameter
202 * length).
203 */
204 status = cli_nt_error(cli);
205
206 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
207 if (NT_STATUS_IS_ERR(status) ||
208 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
209 NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
210 goto out;
211 }
212 }
213
214 /* parse out the lengths */
215 total_data = SVAL(cli->inbuf,smb_tdrcnt);
216 total_param = SVAL(cli->inbuf,smb_tprcnt);
217
218 /* allocate it */
219 if (total_data!=0) {
220 *data = (char *)SMB_REALLOC(*data,total_data);
221 if (!(*data)) {
222 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
223 goto out;
224 }
225 }
226
227 if (total_param!=0) {
228 *param = (char *)SMB_REALLOC(*param,total_param);
229 if (!(*param)) {
230 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
231 goto out;
232 }
233 }
234
235 for (;;) {
236 this_data = SVAL(cli->inbuf,smb_drcnt);
237 this_param = SVAL(cli->inbuf,smb_prcnt);
238
239 if (this_data + *data_len > total_data ||
240 this_param + *param_len > total_param) {
241 DEBUG(1,("Data overflow in cli_receive_trans\n"));
242 goto out;
243 }
244
245 if (this_data + *data_len < this_data ||
246 this_data + *data_len < *data_len ||
247 this_param + *param_len < this_param ||
248 this_param + *param_len < *param_len) {
249 DEBUG(1,("Data overflow in cli_receive_trans\n"));
250 goto out;
251 }
252
253 if (this_data) {
254 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
255 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
256
257 if (data_offset_out > total_data ||
258 data_offset_out + this_data > total_data ||
259 data_offset_out + this_data < data_offset_out ||
260 data_offset_out + this_data < this_data) {
261 DEBUG(1,("Data overflow in cli_receive_trans\n"));
262 goto out;
263 }
264 if (data_offset_in > cli->bufsize ||
265 data_offset_in + this_data > cli->bufsize ||
266 data_offset_in + this_data < data_offset_in ||
267 data_offset_in + this_data < this_data) {
268 DEBUG(1,("Data overflow in cli_receive_trans\n"));
269 goto out;
270 }
271
272 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
273 }
274 if (this_param) {
275 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
276 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
277
278 if (param_offset_out > total_param ||
279 param_offset_out + this_param > total_param ||
280 param_offset_out + this_param < param_offset_out ||
281 param_offset_out + this_param < this_param) {
282 DEBUG(1,("Param overflow in cli_receive_trans\n"));
283 goto out;
284 }
285 if (param_offset_in > cli->bufsize ||
286 param_offset_in + this_param > cli->bufsize ||
287 param_offset_in + this_param < param_offset_in ||
288 param_offset_in + this_param < this_param) {
289 DEBUG(1,("Param overflow in cli_receive_trans\n"));
290 goto out;
291 }
292
293 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
294 }
295 *data_len += this_data;
296 *param_len += this_param;
297
298 if (total_data <= *data_len && total_param <= *param_len) {
299 ret = True;
300 break;
301 }
302
303 if (!cli_receive_smb(cli)) {
304 goto out;
305 }
306
307 show_msg(cli->inbuf);
308
309 /* sanity check */
310 if (CVAL(cli->inbuf,smb_com) != trans) {
311 DEBUG(0,("Expected %s response, got command 0x%02x\n",
312 trans==SMBtrans?"SMBtrans":"SMBtrans2",
313 CVAL(cli->inbuf,smb_com)));
314 goto out;
315 }
316 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
317 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
318 goto out;
319 }
320 }
321
322 /* parse out the total lengths again - they can shrink! */
323 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
324 total_data = SVAL(cli->inbuf,smb_tdrcnt);
325 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
326 total_param = SVAL(cli->inbuf,smb_tprcnt);
327
328 if (total_data <= *data_len && total_param <= *param_len) {
329 ret = True;
330 break;
331 }
332 }
333
334 out:
335
336 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
337 return ret;
338 }
339
340 /****************************************************************************
341 Send a SMB nttrans request.
342 ****************************************************************************/
343
344 BOOL cli_send_nt_trans(struct cli_state *cli,
345 int function,
346 int flags,
347 uint16 *setup, unsigned int lsetup, unsigned int msetup,
348 char *param, unsigned int lparam, unsigned int mparam,
349 char *data, unsigned int ldata, unsigned int mdata)
350 {
351 unsigned int i;
352 unsigned int this_ldata,this_lparam;
353 unsigned int tot_data=0,tot_param=0;
354 uint16 mid;
355 char *outdata,*outparam;
356
357 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
358 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
359
360 memset(cli->outbuf,'\0',smb_size);
361 set_message(NULL,cli->outbuf,19+lsetup,0,True);
362 SCVAL(cli->outbuf,smb_com,SMBnttrans);
363 SSVAL(cli->outbuf,smb_tid, cli->cnum);
364 cli_setup_packet(cli);
365
366 /*
367 * Save the mid we're using. We need this for finding
368 * signing replies.
369 */
370
371 mid = cli->mid;
372
373 outparam = smb_buf(cli->outbuf)+3;
374 outdata = outparam+this_lparam;
375
376 /* primary request */
377 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
378 SCVAL(cli->outbuf,smb_nt_Flags,flags);
379 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
380 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
381 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
382 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
383 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
384 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
385 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
386 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
387 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
388 SIVAL(cli->outbuf,smb_nt_Function, function);
389 for (i=0;i<lsetup;i++) /* setup[] */
390 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
391
392 if (this_lparam) /* param[] */
393 memcpy(outparam,param,this_lparam);
394 if (this_ldata) /* data[] */
395 memcpy(outdata,data,this_ldata);
396
397 cli_setup_bcc(cli, outdata+this_ldata);
398
399 show_msg(cli->outbuf);
400 if (!cli_send_smb(cli)) {
401 return False;
402 }
403
404 /* Note we're in a trans state. Save the sequence
405 * numbers for replies. */
406 client_set_trans_sign_state_on(cli, mid);
407
408 if (this_ldata < ldata || this_lparam < lparam) {
409 /* receive interim response */
410 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
411 client_set_trans_sign_state_off(cli, mid);
412 return(False);
413 }
414
415 tot_data = this_ldata;
416 tot_param = this_lparam;
417
418 while (tot_data < ldata || tot_param < lparam) {
419 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
420 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
421
422 set_message(NULL,cli->outbuf,18,0,True);
423 SCVAL(cli->outbuf,smb_com,SMBnttranss);
424
425 /* XXX - these should probably be aligned */
426 outparam = smb_buf(cli->outbuf);
427 outdata = outparam+this_lparam;
428
429 /* secondary request */
430 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
431 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
432 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
433 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
434 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
435 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
436 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
437 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
438 if (this_lparam) /* param[] */
439 memcpy(outparam,param+tot_param,this_lparam);
440 if (this_ldata) /* data[] */
441 memcpy(outdata,data+tot_data,this_ldata);
442 cli_setup_bcc(cli, outdata+this_ldata);
443
444 /*
445 * Save the mid we're using. We need this for finding
446 * signing replies.
447 */
448 mid = cli->mid;
449
450 show_msg(cli->outbuf);
451
452 if (!cli_send_smb(cli)) {
453 client_set_trans_sign_state_off(cli, mid);
454 return False;
455 }
456
457 /* Ensure we use the same mid for the secondaries. */
458 cli->mid = mid;
459
460 tot_data += this_ldata;
461 tot_param += this_lparam;
462 }
463 }
464
465 return(True);
466 }
467
468 /****************************************************************************
469 Receive a SMB nttrans response allocating the necessary memory.
470 ****************************************************************************/
471
472 BOOL cli_receive_nt_trans(struct cli_state *cli,
473 char **param, unsigned int *param_len,
474 char **data, unsigned int *data_len)
475 {
476 unsigned int total_data=0;
477 unsigned int total_param=0;
478 unsigned int this_data,this_param;
479 uint8 eclass;
480 uint32 ecode;
481 BOOL ret = False;
482
483 *data_len = *param_len = 0;
484
485 if (!cli_receive_smb(cli)) {
486 return False;
487 }
488
489 show_msg(cli->inbuf);
490
491 /* sanity check */
492 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
493 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
494 CVAL(cli->inbuf,smb_com)));
495 return(False);
496 }
497
498 /*
499 * An NT RPC pipe call can return ERRDOS, ERRmoredata
500 * to a trans call. This is not an error and should not
501 * be treated as such.
502 */
503 if (cli_is_dos_error(cli)) {
504 cli_dos_error(cli, &eclass, &ecode);
505 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
506 goto out;
507 }
508 }
509
510 /*
511 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
512 */
513 if (cli_is_nt_error(cli)) {
514 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
515 NT_STATUS_BUFFER_TOO_SMALL)) {
516 goto out;
517 }
518 }
519
520 /* parse out the lengths */
521 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
522 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
523
524 /* allocate it */
525 if (total_data) {
526 *data = (char *)SMB_REALLOC(*data,total_data);
527 if (!(*data)) {
528 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
529 goto out;
530 }
531 }
532
533 if (total_param) {
534 *param = (char *)SMB_REALLOC(*param,total_param);
535 if (!(*param)) {
536 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
537 goto out;
538 }
539 }
540
541 while (1) {
542 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
543 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
544
545 if (this_data + *data_len > total_data ||
546 this_param + *param_len > total_param) {
547 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
548 goto out;
549 }
550
551 if (this_data + *data_len < this_data ||
552 this_data + *data_len < *data_len ||
553 this_param + *param_len < this_param ||
554 this_param + *param_len < *param_len) {
555 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
556 goto out;
557 }
558
559 if (this_data) {
560 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
561 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
562
563 if (data_offset_out > total_data ||
564 data_offset_out + this_data > total_data ||
565 data_offset_out + this_data < data_offset_out ||
566 data_offset_out + this_data < this_data) {
567 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
568 goto out;
569 }
570 if (data_offset_in > cli->bufsize ||
571 data_offset_in + this_data > cli->bufsize ||
572 data_offset_in + this_data < data_offset_in ||
573 data_offset_in + this_data < this_data) {
574 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
575 goto out;
576 }
577
578 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
579 }
580
581 if (this_param) {
582 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
583 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
584
585 if (param_offset_out > total_param ||
586 param_offset_out + this_param > total_param ||
587 param_offset_out + this_param < param_offset_out ||
588 param_offset_out + this_param < this_param) {
589 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
590 goto out;
591 }
592 if (param_offset_in > cli->bufsize ||
593 param_offset_in + this_param > cli->bufsize ||
594 param_offset_in + this_param < param_offset_in ||
595 param_offset_in + this_param < this_param) {
596 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
597 goto out;
598 }
599
600 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
601 }
602
603 *data_len += this_data;
604 *param_len += this_param;
605
606 if (total_data <= *data_len && total_param <= *param_len) {
607 ret = True;
608 break;
609 }
610
611 if (!cli_receive_smb(cli)) {
612 goto out;
613 }
614
615 show_msg(cli->inbuf);
616
617 /* sanity check */
618 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
619 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
620 CVAL(cli->inbuf,smb_com)));
621 goto out;
622 }
623 if (cli_is_dos_error(cli)) {
624 cli_dos_error(cli, &eclass, &ecode);
625 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
626 goto out;
627 }
628 }
629 /*
630 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
631 */
632 if (cli_is_nt_error(cli)) {
633 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
634 NT_STATUS_BUFFER_TOO_SMALL)) {
635 goto out;
636 }
637 }
638
639 /* parse out the total lengths again - they can shrink! */
640 if (SVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
641 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
642 if (SVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
643 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
644
645 if (total_data <= *data_len && total_param <= *param_len) {
646 ret = True;
647 break;
648 }
649 }
650
651 out:
652
653 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
654 return ret;
655 }