2 Unix SMB/CIFS implementation.
3 client transaction calls
4 Copyright (C) Andrew Tridgell 1994-1998
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.
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.
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.
24 /****************************************************************************
25 Send a SMB trans or trans2 request.
26 ****************************************************************************/
28 BOOL
cli_send_trans(struct cli_state
*cli
, int trans
,
29 const char *pipe_name
,
31 uint16
*setup
, unsigned int lsetup
, unsigned int msetup
,
32 const char *param
, unsigned int lparam
, unsigned int mparam
,
33 const char *data
, unsigned int ldata
, unsigned int mdata
)
36 unsigned int this_ldata
,this_lparam
;
37 unsigned int tot_data
=0,tot_param
=0;
38 char *outdata
,*outparam
;
43 this_lparam
= MIN(lparam
,cli
->max_xmit
- (500+lsetup
*2)); /* hack */
44 this_ldata
= MIN(ldata
,cli
->max_xmit
- (500+lsetup
*2+this_lparam
));
46 memset(cli
->outbuf
,'\0',smb_size
);
47 set_message(cli
->outbuf
,14+lsetup
,0,True
);
48 SCVAL(cli
->outbuf
,smb_com
,trans
);
49 SSVAL(cli
->outbuf
,smb_tid
, cli
->cnum
);
50 cli_setup_packet(cli
);
53 * Save the mid we're using. We need this for finding
60 pipe_name_len
= clistr_push(cli
, smb_buf(cli
->outbuf
), pipe_name
, -1, STR_TERMINATE
);
63 outparam
= smb_buf(cli
->outbuf
)+(trans
==SMBtrans
? pipe_name_len
: 3);
64 outdata
= outparam
+this_lparam
;
67 SSVAL(cli
->outbuf
,smb_tpscnt
,lparam
); /* tpscnt */
68 SSVAL(cli
->outbuf
,smb_tdscnt
,ldata
); /* tdscnt */
69 SSVAL(cli
->outbuf
,smb_mprcnt
,mparam
); /* mprcnt */
70 SSVAL(cli
->outbuf
,smb_mdrcnt
,mdata
); /* mdrcnt */
71 SCVAL(cli
->outbuf
,smb_msrcnt
,msetup
); /* msrcnt */
72 SSVAL(cli
->outbuf
,smb_flags
,flags
); /* flags */
73 SIVAL(cli
->outbuf
,smb_timeout
,0); /* timeout */
74 SSVAL(cli
->outbuf
,smb_pscnt
,this_lparam
); /* pscnt */
75 SSVAL(cli
->outbuf
,smb_psoff
,smb_offset(outparam
,cli
->outbuf
)); /* psoff */
76 SSVAL(cli
->outbuf
,smb_dscnt
,this_ldata
); /* dscnt */
77 SSVAL(cli
->outbuf
,smb_dsoff
,smb_offset(outdata
,cli
->outbuf
)); /* dsoff */
78 SCVAL(cli
->outbuf
,smb_suwcnt
,lsetup
); /* suwcnt */
79 for (i
=0;i
<lsetup
;i
++) /* setup[] */
80 SSVAL(cli
->outbuf
,smb_setup
+i
*2,setup
[i
]);
81 p
= smb_buf(cli
->outbuf
);
82 if (trans
!= SMBtrans
) {
83 *p
++ = 0; /* put in a null smb_name */
84 *p
++ = 'D'; *p
++ = ' '; /* observed in OS/2 */
86 if (this_lparam
) /* param[] */
87 memcpy(outparam
,param
,this_lparam
);
88 if (this_ldata
) /* data[] */
89 memcpy(outdata
,data
,this_ldata
);
90 cli_setup_bcc(cli
, outdata
+this_ldata
);
92 show_msg(cli
->outbuf
);
94 if (!cli_send_smb(cli
)) {
98 /* Note we're in a trans state. Save the sequence
99 * numbers for replies. */
100 client_set_trans_sign_state_on(cli
, mid
);
102 if (this_ldata
< ldata
|| this_lparam
< lparam
) {
103 /* receive interim response */
104 if (!cli_receive_smb(cli
) || cli_is_error(cli
)) {
105 client_set_trans_sign_state_off(cli
, mid
);
109 tot_data
= this_ldata
;
110 tot_param
= this_lparam
;
112 while (tot_data
< ldata
|| tot_param
< lparam
) {
113 this_lparam
= MIN(lparam
-tot_param
,cli
->max_xmit
- 500); /* hack */
114 this_ldata
= MIN(ldata
-tot_data
,cli
->max_xmit
- (500+this_lparam
));
116 client_set_trans_sign_state_off(cli
, mid
);
117 client_set_trans_sign_state_on(cli
, mid
);
119 set_message(cli
->outbuf
,trans
==SMBtrans
?8:9,0,True
);
120 SCVAL(cli
->outbuf
,smb_com
,(trans
==SMBtrans
? SMBtranss
: SMBtranss2
));
122 outparam
= smb_buf(cli
->outbuf
);
123 outdata
= outparam
+this_lparam
;
125 /* secondary request */
126 SSVAL(cli
->outbuf
,smb_tpscnt
,lparam
); /* tpscnt */
127 SSVAL(cli
->outbuf
,smb_tdscnt
,ldata
); /* tdscnt */
128 SSVAL(cli
->outbuf
,smb_spscnt
,this_lparam
); /* pscnt */
129 SSVAL(cli
->outbuf
,smb_spsoff
,smb_offset(outparam
,cli
->outbuf
)); /* psoff */
130 SSVAL(cli
->outbuf
,smb_spsdisp
,tot_param
); /* psdisp */
131 SSVAL(cli
->outbuf
,smb_sdscnt
,this_ldata
); /* dscnt */
132 SSVAL(cli
->outbuf
,smb_sdsoff
,smb_offset(outdata
,cli
->outbuf
)); /* dsoff */
133 SSVAL(cli
->outbuf
,smb_sdsdisp
,tot_data
); /* dsdisp */
134 if (trans
==SMBtrans2
)
135 SSVALS(cli
->outbuf
,smb_sfid
,fid
); /* fid */
136 if (this_lparam
) /* param[] */
137 memcpy(outparam
,param
+tot_param
,this_lparam
);
138 if (this_ldata
) /* data[] */
139 memcpy(outdata
,data
+tot_data
,this_ldata
);
140 cli_setup_bcc(cli
, outdata
+this_ldata
);
143 * Save the mid we're using. We need this for finding
148 show_msg(cli
->outbuf
);
149 if (!cli_send_smb(cli
)) {
150 client_set_trans_sign_state_off(cli
, mid
);
154 /* Ensure we use the same mid for the secondaries. */
157 tot_data
+= this_ldata
;
158 tot_param
+= this_lparam
;
165 /****************************************************************************
166 Receive a SMB trans or trans2 response allocating the necessary memory.
167 ****************************************************************************/
169 BOOL
cli_receive_trans(struct cli_state
*cli
,int trans
,
170 char **param
, unsigned int *param_len
,
171 char **data
, unsigned int *data_len
)
173 unsigned int total_data
=0;
174 unsigned int total_param
=0;
175 unsigned int this_data
,this_param
;
179 *data_len
= *param_len
= 0;
181 if (!cli_receive_smb(cli
)) {
185 show_msg(cli
->inbuf
);
188 if (CVAL(cli
->inbuf
,smb_com
) != trans
) {
189 DEBUG(0,("Expected %s response, got command 0x%02x\n",
190 trans
==SMBtrans
?"SMBtrans":"SMBtrans2",
191 CVAL(cli
->inbuf
,smb_com
)));
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. Note that STATUS_NO_MORE_FILES is
199 * returned when a trans2 findfirst/next finishes.
201 status
= cli_nt_error(cli
);
203 if (NT_STATUS_IS_ERR(status
) ||
204 NT_STATUS_EQUAL(status
,STATUS_NO_MORE_FILES
) ||
205 NT_STATUS_EQUAL(status
,STATUS_INACCESSIBLE_SYSTEM_SHORTCUT
)) {
209 /* parse out the lengths */
210 total_data
= SVAL(cli
->inbuf
,smb_tdrcnt
);
211 total_param
= SVAL(cli
->inbuf
,smb_tprcnt
);
215 *data
= (char *)SMB_REALLOC(*data
,total_data
);
217 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
222 if (total_param
!=0) {
223 *param
= (char *)SMB_REALLOC(*param
,total_param
);
225 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
231 this_data
= SVAL(cli
->inbuf
,smb_drcnt
);
232 this_param
= SVAL(cli
->inbuf
,smb_prcnt
);
234 if (this_data
+ *data_len
> total_data
||
235 this_param
+ *param_len
> total_param
) {
236 DEBUG(1,("Data overflow in cli_receive_trans\n"));
240 if (this_data
+ *data_len
< this_data
||
241 this_data
+ *data_len
< *data_len
||
242 this_param
+ *param_len
< this_param
||
243 this_param
+ *param_len
< *param_len
) {
244 DEBUG(1,("Data overflow in cli_receive_trans\n"));
249 unsigned int data_offset_out
= SVAL(cli
->inbuf
,smb_drdisp
);
250 unsigned int data_offset_in
= SVAL(cli
->inbuf
,smb_droff
);
252 if (data_offset_out
> total_data
||
253 data_offset_out
+ this_data
> total_data
||
254 data_offset_out
+ this_data
< data_offset_out
||
255 data_offset_out
+ this_data
< this_data
) {
256 DEBUG(1,("Data overflow in cli_receive_trans\n"));
259 if (data_offset_in
> cli
->bufsize
||
260 data_offset_in
+ this_data
> cli
->bufsize
||
261 data_offset_in
+ this_data
< data_offset_in
||
262 data_offset_in
+ this_data
< this_data
) {
263 DEBUG(1,("Data overflow in cli_receive_trans\n"));
267 memcpy(*data
+ data_offset_out
, smb_base(cli
->inbuf
) + data_offset_in
, this_data
);
270 unsigned int param_offset_out
= SVAL(cli
->inbuf
,smb_prdisp
);
271 unsigned int param_offset_in
= SVAL(cli
->inbuf
,smb_proff
);
273 if (param_offset_out
> total_param
||
274 param_offset_out
+ this_param
> total_param
||
275 param_offset_out
+ this_param
< param_offset_out
||
276 param_offset_out
+ this_param
< this_param
) {
277 DEBUG(1,("Param overflow in cli_receive_trans\n"));
280 if (param_offset_in
> cli
->bufsize
||
281 param_offset_in
+ this_param
> cli
->bufsize
||
282 param_offset_in
+ this_param
< param_offset_in
||
283 param_offset_in
+ this_param
< this_param
) {
284 DEBUG(1,("Param overflow in cli_receive_trans\n"));
288 memcpy(*param
+ param_offset_out
, smb_base(cli
->inbuf
) + param_offset_in
, this_param
);
290 *data_len
+= this_data
;
291 *param_len
+= this_param
;
293 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
298 if (!cli_receive_smb(cli
)) {
302 show_msg(cli
->inbuf
);
305 if (CVAL(cli
->inbuf
,smb_com
) != trans
) {
306 DEBUG(0,("Expected %s response, got command 0x%02x\n",
307 trans
==SMBtrans
?"SMBtrans":"SMBtrans2",
308 CVAL(cli
->inbuf
,smb_com
)));
311 if (NT_STATUS_IS_ERR(cli_nt_error(cli
))) {
315 /* parse out the total lengths again - they can shrink! */
316 if (SVAL(cli
->inbuf
,smb_tdrcnt
) < total_data
)
317 total_data
= SVAL(cli
->inbuf
,smb_tdrcnt
);
318 if (SVAL(cli
->inbuf
,smb_tprcnt
) < total_param
)
319 total_param
= SVAL(cli
->inbuf
,smb_tprcnt
);
321 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
329 client_set_trans_sign_state_off(cli
, SVAL(cli
->inbuf
,smb_mid
));
333 /****************************************************************************
334 Send a SMB nttrans request.
335 ****************************************************************************/
337 BOOL
cli_send_nt_trans(struct cli_state
*cli
,
340 uint16
*setup
, unsigned int lsetup
, unsigned int msetup
,
341 char *param
, unsigned int lparam
, unsigned int mparam
,
342 char *data
, unsigned int ldata
, unsigned int mdata
)
345 unsigned int this_ldata
,this_lparam
;
346 unsigned int tot_data
=0,tot_param
=0;
348 char *outdata
,*outparam
;
350 this_lparam
= MIN(lparam
,cli
->max_xmit
- (500+lsetup
*2)); /* hack */
351 this_ldata
= MIN(ldata
,cli
->max_xmit
- (500+lsetup
*2+this_lparam
));
353 memset(cli
->outbuf
,'\0',smb_size
);
354 set_message(cli
->outbuf
,19+lsetup
,0,True
);
355 SCVAL(cli
->outbuf
,smb_com
,SMBnttrans
);
356 SSVAL(cli
->outbuf
,smb_tid
, cli
->cnum
);
357 cli_setup_packet(cli
);
360 * Save the mid we're using. We need this for finding
366 outparam
= smb_buf(cli
->outbuf
)+3;
367 outdata
= outparam
+this_lparam
;
369 /* primary request */
370 SCVAL(cli
->outbuf
,smb_nt_MaxSetupCount
,msetup
);
371 SCVAL(cli
->outbuf
,smb_nt_Flags
,flags
);
372 SIVAL(cli
->outbuf
,smb_nt_TotalParameterCount
, lparam
);
373 SIVAL(cli
->outbuf
,smb_nt_TotalDataCount
, ldata
);
374 SIVAL(cli
->outbuf
,smb_nt_MaxParameterCount
, mparam
);
375 SIVAL(cli
->outbuf
,smb_nt_MaxDataCount
, mdata
);
376 SIVAL(cli
->outbuf
,smb_nt_ParameterCount
, this_lparam
);
377 SIVAL(cli
->outbuf
,smb_nt_ParameterOffset
, smb_offset(outparam
,cli
->outbuf
));
378 SIVAL(cli
->outbuf
,smb_nt_DataCount
, this_ldata
);
379 SIVAL(cli
->outbuf
,smb_nt_DataOffset
, smb_offset(outdata
,cli
->outbuf
));
380 SIVAL(cli
->outbuf
,smb_nt_SetupCount
, lsetup
);
381 SIVAL(cli
->outbuf
,smb_nt_Function
, function
);
382 for (i
=0;i
<lsetup
;i
++) /* setup[] */
383 SSVAL(cli
->outbuf
,smb_nt_SetupStart
+i
*2,setup
[i
]);
385 if (this_lparam
) /* param[] */
386 memcpy(outparam
,param
,this_lparam
);
387 if (this_ldata
) /* data[] */
388 memcpy(outdata
,data
,this_ldata
);
390 cli_setup_bcc(cli
, outdata
+this_ldata
);
392 show_msg(cli
->outbuf
);
393 if (!cli_send_smb(cli
)) {
397 /* Note we're in a trans state. Save the sequence
398 * numbers for replies. */
399 client_set_trans_sign_state_on(cli
, mid
);
401 if (this_ldata
< ldata
|| this_lparam
< lparam
) {
402 /* receive interim response */
403 if (!cli_receive_smb(cli
) || cli_is_error(cli
)) {
404 client_set_trans_sign_state_off(cli
, mid
);
408 tot_data
= this_ldata
;
409 tot_param
= this_lparam
;
411 while (tot_data
< ldata
|| tot_param
< lparam
) {
412 this_lparam
= MIN(lparam
-tot_param
,cli
->max_xmit
- 500); /* hack */
413 this_ldata
= MIN(ldata
-tot_data
,cli
->max_xmit
- (500+this_lparam
));
415 set_message(cli
->outbuf
,18,0,True
);
416 SCVAL(cli
->outbuf
,smb_com
,SMBnttranss
);
418 /* XXX - these should probably be aligned */
419 outparam
= smb_buf(cli
->outbuf
);
420 outdata
= outparam
+this_lparam
;
422 /* secondary request */
423 SIVAL(cli
->outbuf
,smb_nts_TotalParameterCount
,lparam
);
424 SIVAL(cli
->outbuf
,smb_nts_TotalDataCount
,ldata
);
425 SIVAL(cli
->outbuf
,smb_nts_ParameterCount
,this_lparam
);
426 SIVAL(cli
->outbuf
,smb_nts_ParameterOffset
,smb_offset(outparam
,cli
->outbuf
));
427 SIVAL(cli
->outbuf
,smb_nts_ParameterDisplacement
,tot_param
);
428 SIVAL(cli
->outbuf
,smb_nts_DataCount
,this_ldata
);
429 SIVAL(cli
->outbuf
,smb_nts_DataOffset
,smb_offset(outdata
,cli
->outbuf
));
430 SIVAL(cli
->outbuf
,smb_nts_DataDisplacement
,tot_data
);
431 if (this_lparam
) /* param[] */
432 memcpy(outparam
,param
+tot_param
,this_lparam
);
433 if (this_ldata
) /* data[] */
434 memcpy(outdata
,data
+tot_data
,this_ldata
);
435 cli_setup_bcc(cli
, outdata
+this_ldata
);
438 * Save the mid we're using. We need this for finding
443 show_msg(cli
->outbuf
);
445 if (!cli_send_smb(cli
)) {
446 client_set_trans_sign_state_off(cli
, mid
);
450 /* Ensure we use the same mid for the secondaries. */
453 tot_data
+= this_ldata
;
454 tot_param
+= this_lparam
;
461 /****************************************************************************
462 Receive a SMB nttrans response allocating the necessary memory.
463 ****************************************************************************/
465 BOOL
cli_receive_nt_trans(struct cli_state
*cli
,
466 char **param
, unsigned int *param_len
,
467 char **data
, unsigned int *data_len
)
469 unsigned int total_data
=0;
470 unsigned int total_param
=0;
471 unsigned int this_data
,this_param
;
476 *data_len
= *param_len
= 0;
478 if (!cli_receive_smb(cli
)) {
482 show_msg(cli
->inbuf
);
485 if (CVAL(cli
->inbuf
,smb_com
) != SMBnttrans
) {
486 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
487 CVAL(cli
->inbuf
,smb_com
)));
492 * An NT RPC pipe call can return ERRDOS, ERRmoredata
493 * to a trans call. This is not an error and should not
494 * be treated as such.
496 if (cli_is_dos_error(cli
)) {
497 cli_dos_error(cli
, &eclass
, &ecode
);
498 if (!(eclass
== ERRDOS
&& ecode
== ERRmoredata
)) {
504 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
506 if (cli_is_nt_error(cli
)) {
507 if (!NT_STATUS_EQUAL(cli_nt_error(cli
),
508 NT_STATUS_BUFFER_TOO_SMALL
)) {
513 /* parse out the lengths */
514 total_data
= SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
);
515 total_param
= SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
);
519 *data
= (char *)SMB_REALLOC(*data
,total_data
);
521 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data
));
527 *param
= (char *)SMB_REALLOC(*param
,total_param
);
529 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param
));
535 this_data
= SVAL(cli
->inbuf
,smb_ntr_DataCount
);
536 this_param
= SVAL(cli
->inbuf
,smb_ntr_ParameterCount
);
538 if (this_data
+ *data_len
> total_data
||
539 this_param
+ *param_len
> total_param
) {
540 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
544 if (this_data
+ *data_len
< this_data
||
545 this_data
+ *data_len
< *data_len
||
546 this_param
+ *param_len
< this_param
||
547 this_param
+ *param_len
< *param_len
) {
548 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
553 unsigned int data_offset_out
= SVAL(cli
->inbuf
,smb_ntr_DataDisplacement
);
554 unsigned int data_offset_in
= SVAL(cli
->inbuf
,smb_ntr_DataOffset
);
556 if (data_offset_out
> total_data
||
557 data_offset_out
+ this_data
> total_data
||
558 data_offset_out
+ this_data
< data_offset_out
||
559 data_offset_out
+ this_data
< this_data
) {
560 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
563 if (data_offset_in
> cli
->bufsize
||
564 data_offset_in
+ this_data
> cli
->bufsize
||
565 data_offset_in
+ this_data
< data_offset_in
||
566 data_offset_in
+ this_data
< this_data
) {
567 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
571 memcpy(*data
+ data_offset_out
, smb_base(cli
->inbuf
) + data_offset_in
, this_data
);
575 unsigned int param_offset_out
= SVAL(cli
->inbuf
,smb_ntr_ParameterDisplacement
);
576 unsigned int param_offset_in
= SVAL(cli
->inbuf
,smb_ntr_ParameterOffset
);
578 if (param_offset_out
> total_param
||
579 param_offset_out
+ this_param
> total_param
||
580 param_offset_out
+ this_param
< param_offset_out
||
581 param_offset_out
+ this_param
< this_param
) {
582 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
585 if (param_offset_in
> cli
->bufsize
||
586 param_offset_in
+ this_param
> cli
->bufsize
||
587 param_offset_in
+ this_param
< param_offset_in
||
588 param_offset_in
+ this_param
< this_param
) {
589 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
593 memcpy(*param
+ param_offset_out
, smb_base(cli
->inbuf
) + param_offset_in
, this_param
);
596 *data_len
+= this_data
;
597 *param_len
+= this_param
;
599 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
604 if (!cli_receive_smb(cli
)) {
608 show_msg(cli
->inbuf
);
611 if (CVAL(cli
->inbuf
,smb_com
) != SMBnttrans
) {
612 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
613 CVAL(cli
->inbuf
,smb_com
)));
616 if (cli_is_dos_error(cli
)) {
617 cli_dos_error(cli
, &eclass
, &ecode
);
618 if(!(eclass
== ERRDOS
&& ecode
== ERRmoredata
)) {
623 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
625 if (cli_is_nt_error(cli
)) {
626 if (!NT_STATUS_EQUAL(cli_nt_error(cli
),
627 NT_STATUS_BUFFER_TOO_SMALL
)) {
632 /* parse out the total lengths again - they can shrink! */
633 if (SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
) < total_data
)
634 total_data
= SVAL(cli
->inbuf
,smb_ntr_TotalDataCount
);
635 if (SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
) < total_param
)
636 total_param
= SVAL(cli
->inbuf
,smb_ntr_TotalParameterCount
);
638 if (total_data
<= *data_len
&& total_param
<= *param_len
) {
646 client_set_trans_sign_state_off(cli
, SVAL(cli
->inbuf
,smb_mid
));