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 set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
117 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
119 outparam = smb_buf(cli->outbuf);
120 outdata = outparam+this_lparam;
122 /* secondary request */
123 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
124 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
125 SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
126 SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
127 SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
128 SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
129 SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
130 SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
131 if (trans==SMBtrans2)
132 SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
133 if (this_lparam) /* param[] */
134 memcpy(outparam,param+tot_param,this_lparam);
135 if (this_ldata) /* data[] */
136 memcpy(outdata,data+tot_data,this_ldata);
137 cli_setup_bcc(cli, outdata+this_ldata);
140 * Save the mid we're using. We need this for finding
145 show_msg(cli->outbuf);
146 if (!cli_send_smb(cli)) {
147 client_set_trans_sign_state_off(cli, mid);
151 /* Ensure we use the same mid for the secondaries. */
154 tot_data += this_ldata;
155 tot_param += this_lparam;
162 /****************************************************************************
163 Receive a SMB trans or trans2 response allocating the necessary memory.
164 ****************************************************************************/
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)
170 unsigned int total_data=0;
171 unsigned int total_param=0;
172 unsigned int this_data,this_param;
176 *data_len = *param_len = 0;
178 if (!cli_receive_smb(cli)) {
182 show_msg(cli->inbuf);
185 if (CVAL(cli->inbuf,smb_com) != trans) {
186 DEBUG(0,("Expected %s response, got command 0x%02x\n",
187 trans==SMBtrans?"SMBtrans":"SMBtrans2",
188 CVAL(cli->inbuf,smb_com)));
193 * An NT RPC pipe call can return ERRDOS, ERRmoredata
194 * to a trans call. This is not an error and should not
195 * be treated as such. Note that STATUS_NO_MORE_FILES is
196 * returned when a trans2 findfirst/next finishes.
198 status = cli_nt_error(cli);
200 if (NT_STATUS_IS_ERR(status) || NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES)) {
204 /* parse out the lengths */
205 total_data = SVAL(cli->inbuf,smb_tdrcnt);
206 total_param = SVAL(cli->inbuf,smb_tprcnt);
210 *data = SMB_REALLOC(*data,total_data);
212 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
217 if (total_param!=0) {
218 *param = SMB_REALLOC(*param,total_param);
220 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
226 this_data = SVAL(cli->inbuf,smb_drcnt);
227 this_param = SVAL(cli->inbuf,smb_prcnt);
229 if (this_data + *data_len > total_data ||
230 this_param + *param_len > total_param) {
231 DEBUG(1,("Data overflow in cli_receive_trans\n"));
235 if (this_data + *data_len < this_data ||
236 this_data + *data_len < *data_len ||
237 this_param + *param_len < this_param ||
238 this_param + *param_len < *param_len) {
239 DEBUG(1,("Data overflow in cli_receive_trans\n"));
244 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
245 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
247 if (data_offset_out > total_data ||
248 data_offset_out + this_data > total_data ||
249 data_offset_out + this_data < data_offset_out ||
250 data_offset_out + this_data < this_data) {
251 DEBUG(1,("Data overflow in cli_receive_trans\n"));
254 if (data_offset_in > cli->bufsize ||
255 data_offset_in + this_data > cli->bufsize ||
256 data_offset_in + this_data < data_offset_in ||
257 data_offset_in + this_data < this_data) {
258 DEBUG(1,("Data overflow in cli_receive_trans\n"));
262 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
265 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
266 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
268 if (param_offset_out > total_param ||
269 param_offset_out + this_param > total_param ||
270 param_offset_out + this_param < param_offset_out ||
271 param_offset_out + this_param < this_param) {
272 DEBUG(1,("Param overflow in cli_receive_trans\n"));
275 if (param_offset_in > cli->bufsize ||
276 param_offset_in + this_param > cli->bufsize ||
277 param_offset_in + this_param < param_offset_in ||
278 param_offset_in + this_param < this_param) {
279 DEBUG(1,("Param overflow in cli_receive_trans\n"));
283 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
285 *data_len += this_data;
286 *param_len += this_param;
288 if (total_data <= *data_len && total_param <= *param_len) {
293 if (!cli_receive_smb(cli)) {
297 show_msg(cli->inbuf);
300 if (CVAL(cli->inbuf,smb_com) != trans) {
301 DEBUG(0,("Expected %s response, got command 0x%02x\n",
302 trans==SMBtrans?"SMBtrans":"SMBtrans2",
303 CVAL(cli->inbuf,smb_com)));
306 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
310 /* parse out the total lengths again - they can shrink! */
311 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
312 total_data = SVAL(cli->inbuf,smb_tdrcnt);
313 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
314 total_param = SVAL(cli->inbuf,smb_tprcnt);
316 if (total_data <= *data_len && total_param <= *param_len) {
324 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
328 /****************************************************************************
329 Send a SMB nttrans request.
330 ****************************************************************************/
332 BOOL cli_send_nt_trans(struct cli_state *cli,
335 uint16 *setup, unsigned int lsetup, unsigned int msetup,
336 char *param, unsigned int lparam, unsigned int mparam,
337 char *data, unsigned int ldata, unsigned int mdata)
340 unsigned int this_ldata,this_lparam;
341 unsigned int tot_data=0,tot_param=0;
343 char *outdata,*outparam;
345 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
346 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
348 memset(cli->outbuf,'\0',smb_size);
349 set_message(cli->outbuf,19+lsetup,0,True);
350 SCVAL(cli->outbuf,smb_com,SMBnttrans);
351 SSVAL(cli->outbuf,smb_tid, cli->cnum);
352 cli_setup_packet(cli);
355 * Save the mid we're using. We need this for finding
361 outparam = smb_buf(cli->outbuf)+3;
362 outdata = outparam+this_lparam;
364 /* primary request */
365 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
366 SCVAL(cli->outbuf,smb_nt_Flags,flags);
367 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
368 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
369 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
370 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
371 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
372 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
373 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
374 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
375 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
376 SIVAL(cli->outbuf,smb_nt_Function, function);
377 for (i=0;i<lsetup;i++) /* setup[] */
378 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
380 if (this_lparam) /* param[] */
381 memcpy(outparam,param,this_lparam);
382 if (this_ldata) /* data[] */
383 memcpy(outdata,data,this_ldata);
385 cli_setup_bcc(cli, outdata+this_ldata);
387 show_msg(cli->outbuf);
388 if (!cli_send_smb(cli)) {
392 /* Note we're in a trans state. Save the sequence
393 * numbers for replies. */
394 client_set_trans_sign_state_on(cli, mid);
396 if (this_ldata < ldata || this_lparam < lparam) {
397 /* receive interim response */
398 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
399 client_set_trans_sign_state_off(cli, mid);
403 tot_data = this_ldata;
404 tot_param = this_lparam;
406 while (tot_data < ldata || tot_param < lparam) {
407 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
408 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
410 set_message(cli->outbuf,18,0,True);
411 SCVAL(cli->outbuf,smb_com,SMBnttranss);
413 /* XXX - these should probably be aligned */
414 outparam = smb_buf(cli->outbuf);
415 outdata = outparam+this_lparam;
417 /* secondary request */
418 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
419 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
420 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
421 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
422 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
423 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
424 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
425 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
426 if (this_lparam) /* param[] */
427 memcpy(outparam,param+tot_param,this_lparam);
428 if (this_ldata) /* data[] */
429 memcpy(outdata,data+tot_data,this_ldata);
430 cli_setup_bcc(cli, outdata+this_ldata);
433 * Save the mid we're using. We need this for finding
438 show_msg(cli->outbuf);
440 if (!cli_send_smb(cli)) {
441 client_set_trans_sign_state_off(cli, mid);
445 /* Ensure we use the same mid for the secondaries. */
448 tot_data += this_ldata;
449 tot_param += this_lparam;
456 /****************************************************************************
457 Receive a SMB nttrans response allocating the necessary memory.
458 ****************************************************************************/
460 BOOL cli_receive_nt_trans(struct cli_state *cli,
461 char **param, unsigned int *param_len,
462 char **data, unsigned int *data_len)
464 unsigned int total_data=0;
465 unsigned int total_param=0;
466 unsigned int this_data,this_param;
471 *data_len = *param_len = 0;
473 if (!cli_receive_smb(cli)) {
477 show_msg(cli->inbuf);
480 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
481 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
482 CVAL(cli->inbuf,smb_com)));
487 * An NT RPC pipe call can return ERRDOS, ERRmoredata
488 * to a trans call. This is not an error and should not
489 * be treated as such.
491 if (cli_is_dos_error(cli)) {
492 cli_dos_error(cli, &eclass, &ecode);
493 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
499 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
501 if (cli_is_nt_error(cli)) {
502 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
503 NT_STATUS_BUFFER_TOO_SMALL)) {
508 /* parse out the lengths */
509 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
510 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
514 *data = SMB_REALLOC(*data,total_data);
516 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
522 *param = SMB_REALLOC(*param,total_param);
524 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
530 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
531 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
533 if (this_data + *data_len > total_data ||
534 this_param + *param_len > total_param) {
535 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
539 if (this_data + *data_len < this_data ||
540 this_data + *data_len < *data_len ||
541 this_param + *param_len < this_param ||
542 this_param + *param_len < *param_len) {
543 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
548 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
549 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
551 if (data_offset_out > total_data ||
552 data_offset_out + this_data > total_data ||
553 data_offset_out + this_data < data_offset_out ||
554 data_offset_out + this_data < this_data) {
555 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
558 if (data_offset_in > cli->bufsize ||
559 data_offset_in + this_data > cli->bufsize ||
560 data_offset_in + this_data < data_offset_in ||
561 data_offset_in + this_data < this_data) {
562 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
566 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
570 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
571 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
573 if (param_offset_out > total_param ||
574 param_offset_out + this_param > total_param ||
575 param_offset_out + this_param < param_offset_out ||
576 param_offset_out + this_param < this_param) {
577 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
580 if (param_offset_in > cli->bufsize ||
581 param_offset_in + this_param > cli->bufsize ||
582 param_offset_in + this_param < param_offset_in ||
583 param_offset_in + this_param < this_param) {
584 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
588 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
591 *data_len += this_data;
592 *param_len += this_param;
594 if (total_data <= *data_len && total_param <= *param_len) {
599 if (!cli_receive_smb(cli)) {
603 show_msg(cli->inbuf);
606 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
607 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
608 CVAL(cli->inbuf,smb_com)));
611 if (cli_is_dos_error(cli)) {
612 cli_dos_error(cli, &eclass, &ecode);
613 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
618 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
620 if (cli_is_nt_error(cli)) {
621 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
622 NT_STATUS_BUFFER_TOO_SMALL)) {
627 /* parse out the total lengths again - they can shrink! */
628 if (SVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
629 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
630 if (SVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
631 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
633 if (total_data <= *data_len && total_param <= *param_len) {
641 client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));