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 3 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, see <http://www.gnu.org/licenses/>.
23 /****************************************************************************
24 Send a SMB trans or trans2 request.
25 ****************************************************************************/
27 bool cli_send_trans(struct cli_state *cli, int trans,
28 const char *pipe_name,
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)
35 unsigned int this_ldata,this_lparam;
36 unsigned int tot_data=0,tot_param=0;
37 char *outdata,*outparam;
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));
45 memset(cli->outbuf,'\0',smb_size);
46 cli_set_message(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);
52 * Save the mid we're using. We need this for finding
59 pipe_name_len = clistr_push(cli, smb_buf(cli->outbuf), pipe_name, -1, STR_TERMINATE);
62 outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len : 3);
63 outdata = outparam+this_lparam;
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 */
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);
91 show_msg(cli->outbuf);
93 if (!cli_send_smb(cli)) {
97 cli_state_seqnum_persistent(cli, mid);
99 if (this_ldata < ldata || this_lparam < lparam) {
100 /* receive interim response */
101 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
102 cli_state_seqnum_remove(cli, mid);
106 tot_data = this_ldata;
107 tot_param = this_lparam;
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));
113 cli_set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
114 SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
116 outparam = smb_buf(cli->outbuf);
117 outdata = outparam+this_lparam;
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);
136 show_msg(cli->outbuf);
139 if (!cli_send_smb(cli)) {
140 cli_state_seqnum_remove(cli, mid);
144 tot_data += this_ldata;
145 tot_param += this_lparam;
152 /****************************************************************************
153 Receive a SMB trans or trans2 response allocating the necessary memory.
154 ****************************************************************************/
156 bool cli_receive_trans(struct cli_state *cli,int trans,
157 char **param, unsigned int *param_len,
158 char **data, unsigned int *data_len)
160 unsigned int total_data=0;
161 unsigned int total_param=0;
162 unsigned int this_data,this_param;
167 *data_len = *param_len = 0;
169 mid = SVAL(cli->inbuf,smb_mid);
171 if (!cli_receive_smb(cli)) {
172 cli_state_seqnum_remove(cli, mid);
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)));
183 cli_state_seqnum_remove(cli, mid);
188 * An NT RPC pipe call can return ERRDOS, ERRmoredata
189 * to a trans call. This is not an error and should not
190 * be treated as such. Note that STATUS_NO_MORE_FILES is
191 * returned when a trans2 findfirst/next finishes.
192 * When setting up an encrypted transport we can also
193 * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
195 * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
196 * "<share>/Users/All Users" is enumerated. This is a special pseudo
197 * folder, and the response does not have parameters (nor a parameter
200 status = cli_nt_error(cli);
202 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
203 if (NT_STATUS_IS_ERR(status) ||
204 NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
205 NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
210 /* parse out the lengths */
211 total_data = SVAL(cli->inbuf,smb_tdrcnt);
212 total_param = SVAL(cli->inbuf,smb_tprcnt);
216 /* We know adding 2 is safe as total_data is an
218 *data = (char *)SMB_REALLOC(*data,total_data+2);
220 DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
225 if (total_param!=0) {
226 /* We know adding 2 is safe as total_param is an
228 *param = (char *)SMB_REALLOC(*param,total_param+2);
230 DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
236 this_data = SVAL(cli->inbuf,smb_drcnt);
237 this_param = SVAL(cli->inbuf,smb_prcnt);
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"));
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"));
254 unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
255 unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
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"));
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"));
272 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
275 unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
276 unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
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"));
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"));
293 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
295 *data_len += this_data;
296 *param_len += this_param;
298 if (total_data <= *data_len && total_param <= *param_len) {
303 if (!cli_receive_smb(cli)) {
307 show_msg(cli->inbuf);
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)));
316 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
317 if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
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);
328 if (total_data <= *data_len && total_param <= *param_len) {
336 cli_state_seqnum_remove(cli, mid);
339 /* Ensure the last 2 bytes of param and data are 2 null
340 * bytes. These are malloc'ed, but not included in any
341 * length counts. This allows cli_XX string reading functions
342 * to safely null terminate. */
344 SSVAL(*data,total_data,0);
347 SSVAL(*param,total_param,0);
354 /****************************************************************************
355 Send a SMB nttrans request.
356 ****************************************************************************/
358 bool cli_send_nt_trans(struct cli_state *cli,
361 uint16 *setup, unsigned int lsetup, unsigned int msetup,
362 char *param, unsigned int lparam, unsigned int mparam,
363 char *data, unsigned int ldata, unsigned int mdata)
366 unsigned int this_ldata,this_lparam;
367 unsigned int tot_data=0,tot_param=0;
369 char *outdata,*outparam;
371 this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
372 this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
374 memset(cli->outbuf,'\0',smb_size);
375 cli_set_message(cli->outbuf,19+lsetup,0,True);
376 SCVAL(cli->outbuf,smb_com,SMBnttrans);
377 SSVAL(cli->outbuf,smb_tid, cli->cnum);
378 cli_setup_packet(cli);
381 * Save the mid we're using. We need this for finding
387 outparam = smb_buf(cli->outbuf)+3;
388 outdata = outparam+this_lparam;
390 /* primary request */
391 SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
392 SCVAL(cli->outbuf,smb_nt_Flags,flags);
393 SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
394 SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
395 SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
396 SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
397 SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
398 SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
399 SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
400 SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
401 SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
402 SIVAL(cli->outbuf,smb_nt_Function, function);
403 for (i=0;i<lsetup;i++) /* setup[] */
404 SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
406 if (this_lparam) /* param[] */
407 memcpy(outparam,param,this_lparam);
408 if (this_ldata) /* data[] */
409 memcpy(outdata,data,this_ldata);
411 cli_setup_bcc(cli, outdata+this_ldata);
413 show_msg(cli->outbuf);
414 if (!cli_send_smb(cli)) {
418 cli_state_seqnum_persistent(cli, mid);
420 if (this_ldata < ldata || this_lparam < lparam) {
421 /* receive interim response */
422 if (!cli_receive_smb(cli) || cli_is_error(cli)) {
423 cli_state_seqnum_remove(cli, mid);
427 tot_data = this_ldata;
428 tot_param = this_lparam;
430 while (tot_data < ldata || tot_param < lparam) {
431 this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
432 this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
434 cli_set_message(cli->outbuf,18,0,True);
435 SCVAL(cli->outbuf,smb_com,SMBnttranss);
437 /* XXX - these should probably be aligned */
438 outparam = smb_buf(cli->outbuf);
439 outdata = outparam+this_lparam;
441 /* secondary request */
442 SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
443 SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
444 SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
445 SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
446 SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
447 SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
448 SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
449 SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
450 if (this_lparam) /* param[] */
451 memcpy(outparam,param+tot_param,this_lparam);
452 if (this_ldata) /* data[] */
453 memcpy(outdata,data+tot_data,this_ldata);
454 cli_setup_bcc(cli, outdata+this_ldata);
456 show_msg(cli->outbuf);
459 if (!cli_send_smb(cli)) {
460 cli_state_seqnum_remove(cli, mid);
464 tot_data += this_ldata;
465 tot_param += this_lparam;
472 /****************************************************************************
473 Receive a SMB nttrans response allocating the necessary memory.
474 ****************************************************************************/
476 bool cli_receive_nt_trans(struct cli_state *cli,
477 char **param, unsigned int *param_len,
478 char **data, unsigned int *data_len)
480 unsigned int total_data=0;
481 unsigned int total_param=0;
482 unsigned int this_data,this_param;
488 *data_len = *param_len = 0;
490 mid = SVAL(cli->inbuf,smb_mid);
492 if (!cli_receive_smb(cli)) {
493 cli_state_seqnum_remove(cli, mid);
497 show_msg(cli->inbuf);
500 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
501 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
502 CVAL(cli->inbuf,smb_com)));
503 cli_state_seqnum_remove(cli, mid);
508 * An NT RPC pipe call can return ERRDOS, ERRmoredata
509 * to a trans call. This is not an error and should not
510 * be treated as such.
512 if (cli_is_dos_error(cli)) {
513 cli_dos_error(cli, &eclass, &ecode);
514 if (!(eclass == ERRDOS && ecode == ERRmoredata)) {
520 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
522 if (cli_is_nt_error(cli)) {
523 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
524 NT_STATUS_BUFFER_TOO_SMALL)) {
529 /* parse out the lengths */
530 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
531 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
532 /* Only allow 16 megs. */
533 if (total_param > 16*1024*1024) {
534 DEBUG(0,("cli_receive_nt_trans: param buffer too large %d\n",
538 if (total_data > 16*1024*1024) {
539 DEBUG(0,("cli_receive_nt_trans: data buffer too large %d\n",
546 /* We know adding 2 is safe as total_data is less
547 * than 16mb (above). */
548 *data = (char *)SMB_REALLOC(*data,total_data+2);
550 DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
556 /* We know adding 2 is safe as total_param is less
557 * than 16mb (above). */
558 *param = (char *)SMB_REALLOC(*param,total_param+2);
560 DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
566 this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
567 this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
569 if (this_data + *data_len > total_data ||
570 this_param + *param_len > total_param) {
571 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
575 if (this_data + *data_len < this_data ||
576 this_data + *data_len < *data_len ||
577 this_param + *param_len < this_param ||
578 this_param + *param_len < *param_len) {
579 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
584 unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
585 unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
587 if (data_offset_out > total_data ||
588 data_offset_out + this_data > total_data ||
589 data_offset_out + this_data < data_offset_out ||
590 data_offset_out + this_data < this_data) {
591 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
594 if (data_offset_in > cli->bufsize ||
595 data_offset_in + this_data > cli->bufsize ||
596 data_offset_in + this_data < data_offset_in ||
597 data_offset_in + this_data < this_data) {
598 DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
602 memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
606 unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
607 unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
609 if (param_offset_out > total_param ||
610 param_offset_out + this_param > total_param ||
611 param_offset_out + this_param < param_offset_out ||
612 param_offset_out + this_param < this_param) {
613 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
616 if (param_offset_in > cli->bufsize ||
617 param_offset_in + this_param > cli->bufsize ||
618 param_offset_in + this_param < param_offset_in ||
619 param_offset_in + this_param < this_param) {
620 DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
624 memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
627 *data_len += this_data;
628 *param_len += this_param;
630 if (total_data <= *data_len && total_param <= *param_len) {
635 if (!cli_receive_smb(cli)) {
639 show_msg(cli->inbuf);
642 if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
643 DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
644 CVAL(cli->inbuf,smb_com)));
647 if (cli_is_dos_error(cli)) {
648 cli_dos_error(cli, &eclass, &ecode);
649 if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
654 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
656 if (cli_is_nt_error(cli)) {
657 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
658 NT_STATUS_BUFFER_TOO_SMALL)) {
663 /* parse out the total lengths again - they can shrink! */
664 if (IVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
665 total_data = IVAL(cli->inbuf,smb_ntr_TotalDataCount);
666 if (IVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
667 total_param = IVAL(cli->inbuf,smb_ntr_TotalParameterCount);
669 if (total_data <= *data_len && total_param <= *param_len) {
677 cli_state_seqnum_remove(cli, mid);
680 /* Ensure the last 2 bytes of param and data are 2 null
681 * bytes. These are malloc'ed, but not included in any
682 * length counts. This allows cli_XX string reading functions
683 * to safely null terminate. */
685 SSVAL(*data,total_data,0);
688 SSVAL(*param,total_param,0);
695 struct trans_recvblob {
697 uint32_t max, total, received;
700 struct cli_trans_state {
701 struct cli_state *cli;
702 struct event_context *ev;
706 const char *pipe_name;
711 uint8_t num_setup, max_setup;
713 uint32_t num_param, param_sent;
715 uint32_t num_data, data_sent;
719 struct trans_recvblob rparam;
720 struct trans_recvblob rdata;
722 TALLOC_CTX *secondary_request_ctx;
725 static void cli_trans_recv_helper(struct async_req *req);
727 static struct async_req *cli_ship_trans(TALLOC_CTX *mem_ctx,
728 struct cli_trans_state *state)
731 struct async_req *result = NULL;
732 struct cli_request *cli_req;
735 uint8_t *bytes = NULL;
736 uint16_t param_offset;
737 uint16_t this_param = 0;
738 uint16_t this_data = 0;
739 uint32_t useable_space;
743 frame = talloc_stackframe();
747 if ((state->param_sent != 0) || (state->data_sent != 0)) {
748 /* The secondary commands are one after the primary ones */
752 param_offset = smb_size - 4;
754 bytes = TALLOC_ARRAY(talloc_tos(), uint8_t, 0); /* padding */
762 bytes = (uint8_t *)talloc_append_blob(talloc_tos(), bytes,
763 data_blob_const(pad, 1));
767 bytes = smb_bytes_push_str(bytes, cli_ucs2(state->cli),
769 strlen(state->pipe_name)+1, NULL);
773 wct = 14 + state->num_setup;
774 param_offset += talloc_get_size(bytes);
778 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
780 bytes = (uint8_t *)talloc_append_blob(talloc_tos(), bytes,
781 data_blob_const(pad, 3));
785 wct = 14 + state->num_setup;
786 param_offset += talloc_get_size(bytes);
795 wct = 19 + state->num_setup;
804 useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
806 if (state->param_sent < state->num_param) {
807 this_param = MIN(state->num_param - state->param_sent,
811 if (state->data_sent < state->num_data) {
812 this_data = MIN(state->num_data - state->data_sent,
813 useable_space - this_param);
816 vwv = TALLOC_ARRAY(talloc_tos(), uint16_t, wct);
820 param_offset += wct * sizeof(uint16_t);
822 DEBUG(10, ("num_setup=%u, max_setup=%u, "
823 "param_total=%u, this_param=%u, max_param=%u, "
824 "data_total=%u, this_data=%u, max_data=%u, "
825 "param_offset=%u, param_disp=%u, data_disp=%u\n",
826 (unsigned)state->num_setup, (unsigned)state->max_setup,
827 (unsigned)state->num_param, (unsigned)this_param,
828 (unsigned)state->rparam.max,
829 (unsigned)state->num_data, (unsigned)this_data,
830 (unsigned)state->rdata.max,
831 (unsigned)param_offset,
832 (unsigned)state->param_sent, (unsigned)state->data_sent));
837 SSVAL(vwv + 0, 0, state->num_param);
838 SSVAL(vwv + 1, 0, state->num_data);
839 SSVAL(vwv + 2, 0, state->rparam.max);
840 SSVAL(vwv + 3, 0, state->rdata.max);
841 SCVAL(vwv + 4, 0, state->max_setup);
842 SCVAL(vwv + 4, 1, 0); /* reserved */
843 SSVAL(vwv + 5, 0, state->flags);
844 SIVAL(vwv + 6, 0, 0); /* timeout */
845 SSVAL(vwv + 8, 0, 0); /* reserved */
846 SSVAL(vwv + 9, 0, this_param);
847 SSVAL(vwv +10, 0, param_offset);
848 SSVAL(vwv +11, 0, this_data);
849 SSVAL(vwv +12, 0, param_offset + this_param);
850 SCVAL(vwv +13, 0, state->num_setup);
851 SCVAL(vwv +13, 1, 0); /* reserved */
852 memcpy(vwv + 14, state->setup,
853 sizeof(uint16_t) * state->num_setup);
857 SSVAL(vwv + 0, 0, state->num_param);
858 SSVAL(vwv + 1, 0, state->num_data);
859 SSVAL(vwv + 2, 0, this_param);
860 SSVAL(vwv + 3, 0, param_offset);
861 SSVAL(vwv + 4, 0, state->param_sent);
862 SSVAL(vwv + 5, 0, this_data);
863 SSVAL(vwv + 6, 0, param_offset + this_param);
864 SSVAL(vwv + 7, 0, state->data_sent);
865 if (cmd == SMBtranss2) {
866 SSVAL(vwv + 8, 0, state->fid);
870 SCVAL(vwv, 0, state->max_setup);
871 SSVAL(vwv, 1, 0); /* reserved */
872 SIVAL(vwv, 3, state->num_param);
873 SIVAL(vwv, 7, state->num_data);
874 SIVAL(vwv, 11, state->rparam.max);
875 SIVAL(vwv, 15, state->rdata.max);
876 SIVAL(vwv, 19, this_param);
877 SIVAL(vwv, 23, param_offset);
878 SIVAL(vwv, 27, this_data);
879 SIVAL(vwv, 31, param_offset + this_param);
880 SCVAL(vwv, 35, state->num_setup);
881 SSVAL(vwv, 36, state->function);
882 memcpy(vwv + 19, state->setup,
883 sizeof(uint16_t) * state->num_setup);
886 SSVAL(vwv, 0, 0); /* reserved */
887 SCVAL(vwv, 2, 0); /* reserved */
888 SIVAL(vwv, 3, state->num_param);
889 SIVAL(vwv, 7, state->num_data);
890 SIVAL(vwv, 11, this_param);
891 SIVAL(vwv, 15, param_offset);
892 SIVAL(vwv, 19, state->param_sent);
893 SIVAL(vwv, 23, this_data);
894 SIVAL(vwv, 27, param_offset + this_param);
895 SIVAL(vwv, 31, state->data_sent);
896 SCVAL(vwv, 35, 0); /* reserved */
900 bytes = (uint8_t *)talloc_append_blob(
902 data_blob_const(state->param + state->param_sent, this_param));
906 state->param_sent += this_param;
908 bytes = (uint8_t *)talloc_append_blob(
910 data_blob_const(state->data + state->data_sent, this_data));
914 state->data_sent += this_data;
916 if ((cmd == SMBtrans) || (cmd == SMBtrans2) || (cmd == SMBnttrans)) {
918 * Primary request, retrieve our mid
920 result = cli_request_send(mem_ctx, state->ev, state->cli,
922 talloc_get_size(bytes), bytes);
923 if (result == NULL) {
926 cli_req = talloc_get_type_abort(result->private_data,
928 state->mid = cli_req->mid;
929 state->seqnum = cli_req->seqnum;
931 uint16_t num_bytes = talloc_get_size(bytes);
933 * Secondary request, we have to fix up the mid. Thus we do
934 * the chain_cork/chain/uncork ourselves.
936 if (!cli_chain_cork(state->cli, state->ev,
937 wct * sizeof(uint16_t) + num_bytes + 3)) {
940 result = cli_request_send(mem_ctx, state->ev, state->cli, cmd,
941 0, wct, vwv, 0, num_bytes, bytes);
942 if (result == NULL) {
945 cli_req = talloc_get_type_abort(result->private_data,
947 cli_req->recv_helper.fn = cli_trans_recv_helper;
948 cli_req->recv_helper.priv = state;
949 cli_req->mid = state->mid;
950 cli_chain_uncork(state->cli);
951 state->seqnum = cli_req->seqnum;
959 static void cli_trans_ship_rest(struct async_req *req,
960 struct cli_trans_state *state)
962 struct cli_request *cli_req;
964 state->secondary_request_ctx = talloc_new(state);
965 if (state->secondary_request_ctx == NULL) {
966 async_req_nterror(req, NT_STATUS_NO_MEMORY);
970 while ((state->param_sent < state->num_param)
971 || (state->data_sent < state->num_data)) {
972 struct async_req *subreq;
974 subreq = cli_ship_trans(state->secondary_request_ctx, state);
975 if (subreq == NULL) {
976 async_req_nterror(req, NT_STATUS_NO_MEMORY);
981 cli_req = talloc_get_type_abort(req->private_data,
984 cli_req->seqnum = state->seqnum;
987 static NTSTATUS cli_pull_trans(struct async_req *req,
988 struct cli_request *cli_req,
989 uint8_t smb_cmd, bool expect_first_reply,
990 uint8_t *pnum_setup, uint16_t **psetup,
991 uint32_t *ptotal_param, uint32_t *pnum_param,
992 uint32_t *pparam_disp, uint8_t **pparam,
993 uint32_t *ptotal_data, uint32_t *pnum_data,
994 uint32_t *pdata_disp, uint8_t **pdata)
996 uint32_t param_ofs, data_ofs;
1003 status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
1006 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1007 * !NT_STATUS_IS_OK(status) here.
1010 if (NT_STATUS_IS_ERR(status)) {
1014 if (expect_first_reply) {
1015 if ((wct != 0) || (num_bytes != 0)) {
1016 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1018 return NT_STATUS_OK;
1025 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1027 *ptotal_param = SVAL(vwv + 0, 0);
1028 *ptotal_data = SVAL(vwv + 1, 0);
1029 *pnum_param = SVAL(vwv + 3, 0);
1030 param_ofs = SVAL(vwv + 4, 0);
1031 *pparam_disp = SVAL(vwv + 5, 0);
1032 *pnum_data = SVAL(vwv + 6, 0);
1033 data_ofs = SVAL(vwv + 7, 0);
1034 *pdata_disp = SVAL(vwv + 8, 0);
1035 *pnum_setup = CVAL(vwv + 9, 0);
1036 if (wct < 10 + (*pnum_setup)) {
1037 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1044 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1046 *ptotal_param = IVAL(vwv, 3);
1047 *ptotal_data = IVAL(vwv, 7);
1048 *pnum_param = IVAL(vwv, 11);
1049 param_ofs = IVAL(vwv, 15);
1050 *pparam_disp = IVAL(vwv, 19);
1051 *pnum_data = IVAL(vwv, 23);
1052 data_ofs = IVAL(vwv, 27);
1053 *pdata_disp = IVAL(vwv, 31);
1054 *pnum_setup = CVAL(vwv, 35);
1059 return NT_STATUS_INTERNAL_ERROR;
1063 * Check for buffer overflows. data_ofs needs to be checked against
1064 * the incoming buffer length, data_disp against the total
1065 * length. Likewise for param_ofs/param_disp.
1068 if (trans_oob(smb_len(cli_req->inbuf), param_ofs, *pnum_param)
1069 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
1070 || trans_oob(smb_len(cli_req->inbuf), data_ofs, *pnum_data)
1071 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
1072 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1075 *pparam = (uint8_t *)cli_req->inbuf + 4 + param_ofs;
1076 *pdata = (uint8_t *)cli_req->inbuf + 4 + data_ofs;
1078 return NT_STATUS_OK;
1081 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
1082 struct trans_recvblob *blob,
1083 uint32_t total, uint32_t thistime,
1084 uint8_t *buf, uint32_t displacement)
1086 if (blob->data == NULL) {
1087 if (total > blob->max) {
1088 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1090 blob->total = total;
1091 blob->data = TALLOC_ARRAY(mem_ctx, uint8_t, total);
1092 if (blob->data == NULL) {
1093 return NT_STATUS_NO_MEMORY;
1097 if (total > blob->total) {
1098 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1102 memcpy(blob->data + displacement, buf, thistime);
1103 blob->received += thistime;
1106 return NT_STATUS_OK;
1109 static void cli_trans_recv_helper(struct async_req *req)
1111 struct cli_request *cli_req = talloc_get_type_abort(
1112 req->private_data, struct cli_request);
1113 struct cli_trans_state *state = talloc_get_type_abort(
1114 cli_req->recv_helper.priv, struct cli_trans_state);
1115 uint8_t num_setup = 0;
1116 uint16_t *setup = NULL;
1117 uint32_t total_param = 0;
1118 uint32_t num_param = 0;
1119 uint32_t param_disp = 0;
1120 uint32_t total_data = 0;
1121 uint32_t num_data = 0;
1122 uint32_t data_disp = 0;
1123 uint8_t *param = NULL;
1124 uint8_t *data = NULL;
1128 sent_all = (state->param_sent == state->num_param)
1129 && (state->data_sent == state->num_data);
1131 status = cli_pull_trans(
1132 req, cli_req, state->cmd, !sent_all, &num_setup, &setup,
1133 &total_param, &num_param, ¶m_disp, ¶m,
1134 &total_data, &num_data, &data_disp, &data);
1137 * We can receive something like STATUS_MORE_ENTRIES, so don't use
1138 * !NT_STATUS_IS_OK(status) here.
1141 if (NT_STATUS_IS_ERR(status)) {
1142 async_req_nterror(req, status);
1147 cli_trans_ship_rest(req, state);
1152 * We've just received a real response. This means that we don't need
1153 * the secondary cli_request structures anymore, they have all been
1154 * shipped to the server.
1156 TALLOC_FREE(state->secondary_request_ctx);
1158 if (num_setup != 0) {
1159 TALLOC_FREE(state->rsetup);
1160 state->rsetup = (uint16_t *)TALLOC_MEMDUP(
1161 state, setup, sizeof(uint16_t) * num_setup);
1162 if (state->rsetup == NULL) {
1163 async_req_nterror(req, NT_STATUS_NO_MEMORY);
1168 status = cli_trans_pull_blob(
1169 state, &state->rparam, total_param, num_param, param,
1172 if (!NT_STATUS_IS_OK(status)) {
1173 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
1174 async_req_nterror(req, status);
1178 status = cli_trans_pull_blob(
1179 state, &state->rdata, total_data, num_data, data,
1182 if (!NT_STATUS_IS_OK(status)) {
1183 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
1184 async_req_nterror(req, status);
1188 if ((state->rparam.total == state->rparam.received)
1189 && (state->rdata.total == state->rdata.received)) {
1190 async_req_done(req);
1194 struct async_req *cli_trans_send(
1195 TALLOC_CTX *mem_ctx, struct event_context *ev,
1196 struct cli_state *cli, uint8_t trans_cmd,
1197 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
1198 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1199 uint8_t *param, uint32_t num_param, uint32_t max_param,
1200 uint8_t *data, uint32_t num_data, uint32_t max_data)
1202 struct async_req *req;
1203 struct cli_request *cli_req;
1204 struct cli_trans_state *state;
1207 * We can't use it in a chained request chain, we'd get the offset
1208 * calculations wrong.
1211 if (cli_in_chain(cli)) {
1215 if ((trans_cmd == SMBtrans) || (trans_cmd == SMBtrans2)) {
1216 if ((num_param > 0xffff) || (max_param > 0xffff)
1217 || (num_data > 0xffff) || (max_data > 0xffff)) {
1218 DEBUG(3, ("Attempt to send invalid trans2 request "
1219 "(setup %u, params %u/%u, data %u/%u)\n",
1220 (unsigned)num_setup,
1221 (unsigned)num_param, (unsigned)max_param,
1222 (unsigned)num_data, (unsigned)max_data));
1227 state = talloc(mem_ctx, struct cli_trans_state);
1228 if (state == NULL) {
1234 state->cmd = trans_cmd;
1235 state->num_rsetup = 0;
1236 state->rsetup = NULL;
1237 ZERO_STRUCT(state->rparam);
1238 ZERO_STRUCT(state->rdata);
1239 state->secondary_request_ctx = NULL;
1241 if (trans_cmd == SMBtrans) {
1242 state->pipe_name = talloc_strdup(state, pipe_name);
1243 if (state->pipe_name == NULL) {
1247 if (trans_cmd == SMBtrans2) {
1250 if (trans_cmd == SMBnttrans) {
1251 state->function = function;
1254 state->flags = flags;
1256 if (setup != NULL) {
1257 state->setup = (uint16_t *)TALLOC_MEMDUP(
1258 state, setup, sizeof(*setup) * num_setup);
1259 if (state->setup == NULL) {
1262 state->num_setup = num_setup;
1264 state->setup = NULL;
1265 state->num_setup = 0;
1268 state->max_setup = max_setup;
1270 if (param != NULL) {
1271 state->param = (uint8_t *)TALLOC_MEMDUP(state, param,
1273 if (state->param == NULL) {
1276 state->num_param = num_param;
1278 state->param = NULL;
1279 state->num_param = 0;
1282 state->param_sent = 0;
1283 state->rparam.max = max_param;
1286 state->data = (uint8_t *)TALLOC_MEMDUP(state, data, num_data);
1287 if (state->data == NULL) {
1290 state->num_data = num_data;
1293 state->num_data = 0;
1296 state->data_sent = 0;
1297 state->rdata.max = max_data;
1299 req = cli_ship_trans(state, state);
1304 cli_req = talloc_get_type_abort(req->private_data, struct cli_request);
1305 cli_req->recv_helper.fn = cli_trans_recv_helper;
1306 cli_req->recv_helper.priv = state;
1315 NTSTATUS cli_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
1316 uint16_t **setup, uint8_t *num_setup,
1317 uint8_t **param, uint32_t *num_param,
1318 uint8_t **data, uint32_t *num_data)
1320 struct cli_request *cli_req = talloc_get_type_abort(
1321 req->private_data, struct cli_request);
1322 struct cli_trans_state *state = talloc_get_type_abort(
1323 cli_req->recv_helper.priv, struct cli_trans_state);
1326 if (async_req_is_nterror(req, &status)) {
1330 if (setup != NULL) {
1331 *setup = talloc_move(mem_ctx, &state->rsetup);
1332 *num_setup = state->num_rsetup;
1334 TALLOC_FREE(state->rsetup);
1337 if (param != NULL) {
1338 *param = talloc_move(mem_ctx, &state->rparam.data);
1339 *num_param = state->rparam.total;
1341 TALLOC_FREE(state->rparam.data);
1345 *data = talloc_move(mem_ctx, &state->rdata.data);
1346 *num_data = state->rdata.total;
1348 TALLOC_FREE(state->rdata.data);
1351 return NT_STATUS_OK;
1354 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
1356 const char *pipe_name, uint16_t fid, uint16_t function,
1358 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
1359 uint8_t *param, uint32_t num_param, uint32_t max_param,
1360 uint8_t *data, uint32_t num_data, uint32_t max_data,
1361 uint16_t **rsetup, uint8_t *num_rsetup,
1362 uint8_t **rparam, uint32_t *num_rparam,
1363 uint8_t **rdata, uint32_t *num_rdata)
1365 TALLOC_CTX *frame = talloc_stackframe();
1366 struct event_context *ev;
1367 struct async_req *req;
1368 NTSTATUS status = NT_STATUS_NO_MEMORY;
1370 if (cli->fd_event != NULL) {
1372 * Can't use sync call while an async call is in flight
1374 cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
1378 ev = event_context_init(frame);
1383 req = cli_trans_send(frame, ev, cli, trans_cmd,
1384 pipe_name, fid, function, flags,
1385 setup, num_setup, max_setup,
1386 param, num_param, max_param,
1387 data, num_data, max_data);
1392 while (req->state < ASYNC_REQ_DONE) {
1393 event_loop_once(ev);
1396 status = cli_trans_recv(req, mem_ctx, rsetup, num_rsetup,
1397 rparam, num_rparam, rdata, num_rdata);