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 if (this_ldata < ldata || this_lparam < lparam) {
99 /* receive interim response */
100 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
104 tot_data = this_ldata;
105 tot_param = this_lparam;
107 while (tot_data < ldata || tot_param < lparam) {
108 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
109 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
111 set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
112 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
114 outparam = smb_buf(cli->outbuf);
115 outdata = outparam+this_lparam;
117 /* secondary request */
118 SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
119 SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
120 SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
121 SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
122 SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
123 SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
124 SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
125 SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
126 if (trans==SMBtrans2)
127 SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
128 if (this_lparam) /* param[] */
129 memcpy(outparam,param+tot_param,this_lparam);
130 if (this_ldata) /* data[] */
131 memcpy(outdata,data+tot_data,this_ldata);
132 cli_setup_bcc(cli, outdata+this_ldata);
135 * Save the mid we're using. We need this for finding
140 show_msg(cli->outbuf);
141 if (!cli_send_smb(cli)) {
145 /* Ensure we use the same mid for the secondaries. */
148 tot_data += this_ldata;
149 tot_param += this_lparam;
156 /****************************************************************************
157 Receive a SMB trans or trans2 response allocating the necessary memory.
158 ****************************************************************************/
160 BOOL cli_receive_trans(struct cli_state *cli,int trans,
161 char **param, unsigned int *param_len,
162 char **data, unsigned int *data_len)
164 unsigned int total_data=0;
165 unsigned int total_param=0;
166 unsigned int this_data,this_param;
170 *data_len = *param_len = 0;
172 if (!cli_receive_smb(cli)) {
176 show_msg(cli->inbuf);
179 if (CVAL(cli->inbuf,smb_com) != trans) {
180 DEBUG(0,("Expected %s response, got command 0x%02x\n",
181 trans==SMBtrans?"SMBtrans":"SMBtrans2",
182 CVAL(cli->inbuf,smb_com)));
187 * An NT RPC pipe call can return ERRDOS, ERRmoredata
188 * to a trans call. This is not an error and should not
189 * be treated as such. Note that STATUS_NO_MORE_FILES is
190 * returned when a trans2 findfirst/next finishes.
192 status = cli_nt_error(cli);
194 if (NT_STATUS_IS_ERR(status) ||
195 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
196 NT_STATUS_EQUAL(status,STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
200 /* parse out the lengths */
201 total_data = SVAL(cli->inbuf,smb_tdrcnt);
202 total_param = SVAL(cli->inbuf,smb_tprcnt);
206 *data = (char *)SMB_REALLOC(*data,total_data);
208 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
213 if (total_param!=0) {
214 *param = (char *)SMB_REALLOC(*param,total_param);
216 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
222 this_data = SVAL(cli->inbuf,smb_drcnt);
223 this_param = SVAL(cli->inbuf,smb_prcnt);
225 if (this_data + *data_len > total_data ||
226 this_param + *param_len > total_param) {
227 DEBUG(1,("Data overflow in cli_receive_trans\n"));
231 if (this_data + *data_len < this_data ||
232 this_data + *data_len < *data_len ||
233 this_param + *param_len < this_param ||
234 this_param + *param_len < *param_len) {
235 DEBUG(1,("Data overflow in cli_receive_trans\n"));
240 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
241 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
243 if (data_offset_out > total_data ||
244 data_offset_out + this_data > total_data ||
245 data_offset_out + this_data < data_offset_out ||
246 data_offset_out + this_data < this_data) {
247 DEBUG(1,("Data overflow in cli_receive_trans\n"));
250 if (data_offset_in > cli->bufsize ||
251 data_offset_in + this_data > cli->bufsize ||
252 data_offset_in + this_data < data_offset_in ||
253 data_offset_in + this_data < this_data) {
254 DEBUG(1,("Data overflow in cli_receive_trans\n"));
258 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
261 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
262 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
264 if (param_offset_out > total_param ||
265 param_offset_out + this_param > total_param ||
266 param_offset_out + this_param < param_offset_out ||
267 param_offset_out + this_param < this_param) {
268 DEBUG(1,("Param overflow in cli_receive_trans\n"));
271 if (param_offset_in > cli->bufsize ||
272 param_offset_in + this_param > cli->bufsize ||
273 param_offset_in + this_param < param_offset_in ||
274 param_offset_in + this_param < this_param) {
275 DEBUG(1,("Param overflow in cli_receive_trans\n"));
279 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
281 *data_len += this_data;
282 *param_len += this_param;
284 if (total_data <= *data_len && total_param <= *param_len) {
289 if (!cli_receive_smb(cli)) {
293 show_msg(cli->inbuf);
296 if (CVAL(cli->inbuf,smb_com) != trans) {
297 DEBUG(0,("Expected %s response, got command 0x%02x\n",
298 trans==SMBtrans?"SMBtrans":"SMBtrans2",
299 CVAL(cli->inbuf,smb_com)));
302 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
306 /* parse out the total lengths again - they can shrink! */
307 if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
308 total_data = SVAL(cli->inbuf,smb_tdrcnt);
309 if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
310 total_param = SVAL(cli->inbuf,smb_tprcnt);
312 if (total_data <= *data_len && total_param <= *param_len) {
323 /****************************************************************************
324 Send a SMB nttrans request.
325 ****************************************************************************/
327 BOOL cli_send_nt_trans(struct cli_state *cli,
330 uint16 *setup, unsigned int lsetup, unsigned int msetup,
331 char *param, unsigned int lparam, unsigned int mparam,
332 char *data, unsigned int ldata, unsigned int mdata)
335 unsigned int this_ldata,this_lparam;
336 unsigned int tot_data=0,tot_param=0;
338 char *outdata,*outparam;
340 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
341 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
343 memset(cli->outbuf,'\0',smb_size);
344 set_message(cli->outbuf,19+lsetup,0,True);
345 SCVAL(cli->outbuf,smb_com,SMBnttrans);
346 SSVAL(cli->outbuf,smb_tid, cli->cnum);
347 cli_setup_packet(cli);
350 * Save the mid we're using. We need this for finding
356 outparam = smb_buf(cli->outbuf)+3;
357 outdata = outparam+this_lparam;
359 /* primary request */
360 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
361 SCVAL(cli->outbuf,smb_nt_Flags,flags);
362 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
363 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
364 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
365 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
366 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
367 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
368 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
369 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
370 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
371 SIVAL(cli->outbuf,smb_nt_Function, function);
372 for (i=0;i<lsetup;i++) /* setup[] */
373 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
375 if (this_lparam) /* param[] */
376 memcpy(outparam,param,this_lparam);
377 if (this_ldata) /* data[] */
378 memcpy(outdata,data,this_ldata);
380 cli_setup_bcc(cli, outdata+this_ldata);
382 show_msg(cli->outbuf);
383 if (!cli_send_smb(cli)) {
387 if (this_ldata < ldata || this_lparam < lparam) {
388 /* receive interim response */
389 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
393 tot_data = this_ldata;
394 tot_param = this_lparam;
396 while (tot_data < ldata || tot_param < lparam) {
397 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
398 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
400 set_message(cli->outbuf,18,0,True);
401 SCVAL(cli->outbuf,smb_com,SMBnttranss);
403 /* XXX - these should probably be aligned */
404 outparam = smb_buf(cli->outbuf);
405 outdata = outparam+this_lparam;
407 /* secondary request */
408 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
409 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
410 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
411 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
412 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
413 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
414 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
415 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
416 if (this_lparam) /* param[] */
417 memcpy(outparam,param+tot_param,this_lparam);
418 if (this_ldata) /* data[] */
419 memcpy(outdata,data+tot_data,this_ldata);
420 cli_setup_bcc(cli, outdata+this_ldata);
423 * Save the mid we're using. We need this for finding
428 show_msg(cli->outbuf);
430 if (!cli_send_smb(cli)) {
434 /* Ensure we use the same mid for the secondaries. */
437 tot_data += this_ldata;
438 tot_param += this_lparam;
445 /****************************************************************************
446 Receive a SMB nttrans response allocating the necessary memory.
447 ****************************************************************************/
449 BOOL cli_receive_nt_trans(struct cli_state *cli,
450 char **param, unsigned int *param_len,
451 char **data, unsigned int *data_len)
453 unsigned int total_data=0;
454 unsigned int total_param=0;
455 unsigned int this_data,this_param;
460 *data_len = *param_len = 0;
462 if (!cli_receive_smb(cli)) {
466 show_msg(cli->inbuf);
469 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
470 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
471 CVAL(cli->inbuf,smb_com)));
476 * An NT RPC pipe call can return ERRDOS, ERRmoredata
477 * to a trans call. This is not an error and should not
478 * be treated as such.
480 if (cli_is_dos_error(cli)) {
481 cli_dos_error(cli, &eclass, &ecode);
482 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
488 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
490 if (cli_is_nt_error(cli)) {
491 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
492 NT_STATUS_BUFFER_TOO_SMALL)) {
497 /* parse out the lengths */
498 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
499 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
503 *data = (char *)SMB_REALLOC(*data,total_data);
505 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
511 *param = (char *)SMB_REALLOC(*param,total_param);
513 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
519 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
520 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
522 if (this_data + *data_len > total_data ||
523 this_param + *param_len > total_param) {
524 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
528 if (this_data + *data_len < this_data ||
529 this_data + *data_len < *data_len ||
530 this_param + *param_len < this_param ||
531 this_param + *param_len < *param_len) {
532 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
537 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
538 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
540 if (data_offset_out > total_data ||
541 data_offset_out + this_data > total_data ||
542 data_offset_out + this_data < data_offset_out ||
543 data_offset_out + this_data < this_data) {
544 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
547 if (data_offset_in > cli->bufsize ||
548 data_offset_in + this_data > cli->bufsize ||
549 data_offset_in + this_data < data_offset_in ||
550 data_offset_in + this_data < this_data) {
551 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
555 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
559 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
560 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
562 if (param_offset_out > total_param ||
563 param_offset_out + this_param > total_param ||
564 param_offset_out + this_param < param_offset_out ||
565 param_offset_out + this_param < this_param) {
566 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
569 if (param_offset_in > cli->bufsize ||
570 param_offset_in + this_param > cli->bufsize ||
571 param_offset_in + this_param < param_offset_in ||
572 param_offset_in + this_param < this_param) {
573 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
577 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
580 *data_len += this_data;
581 *param_len += this_param;
583 if (total_data <= *data_len && total_param <= *param_len) {
588 if (!cli_receive_smb(cli)) {
592 show_msg(cli->inbuf);
595 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
596 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
597 CVAL(cli->inbuf,smb_com)));
600 if (cli_is_dos_error(cli)) {
601 cli_dos_error(cli, &eclass, &ecode);
602 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
607 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
609 if (cli_is_nt_error(cli)) {
610 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
611 NT_STATUS_BUFFER_TOO_SMALL)) {
616 /* parse out the total lengths again - they can shrink! */
617 if (SVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
618 total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
619 if (SVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
620 total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
622 if (total_data <= *data_len && total_param <= *param_len) {