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r22868: Replace some message_send_pid calls with messaging_send_pid calls. More
[Samba/bb.git] / source3 / smbd / ipc.c
blob6b647fc72b665d383bc8cd3e1a335d1506716fa2
1 /*
2 Unix SMB/CIFS implementation.
3 Inter-process communication and named pipe handling
4 Copyright (C) Andrew Tridgell 1992-1998
5
6 SMB Version handling
7 Copyright (C) John H Terpstra 1995-1998
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23 /*
24 This file handles the named pipe and mailslot calls
25 in the SMBtrans protocol
26 */
27
28 #include "includes.h"
29
30 extern int max_send;
31
32 #define NERR_notsupported 50
33
34 extern int smb_read_error;
35
36 /*******************************************************************
37 copies parameters and data, as needed, into the smb buffer
38
39 *both* the data and params sections should be aligned. this
40 is fudged in the rpc pipes by
41 at present, only the data section is. this may be a possible
42 cause of some of the ipc problems being experienced. lkcl26dec97
43
44 ******************************************************************/
45
46 static void copy_trans_params_and_data(char *outbuf, int align,
47 char *rparam, int param_offset, int param_len,
48 char *rdata, int data_offset, int data_len)
49 {
50 char *copy_into = smb_buf(outbuf)+1;
51
52 if(param_len < 0)
53 param_len = 0;
54
55 if(data_len < 0)
56 data_len = 0;
57
58 DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d]\n",
59 param_offset, param_offset + param_len,
60 data_offset , data_offset + data_len));
61
62 if (param_len)
63 memcpy(copy_into, &rparam[param_offset], param_len);
64
65 copy_into += param_len + align;
66
67 if (data_len )
68 memcpy(copy_into, &rdata[data_offset], data_len);
69 }
70
71 /****************************************************************************
72 Send a trans reply.
73 ****************************************************************************/
74
75 void send_trans_reply(const char *inbuf,
76 char *outbuf,
77 char *rparam,
78 int rparam_len,
79 char *rdata,
80 int rdata_len,
81 BOOL buffer_too_large)
82 {
83 int this_ldata,this_lparam;
84 int tot_data_sent = 0;
85 int tot_param_sent = 0;
86 int align;
87
88 int ldata = rdata ? rdata_len : 0;
89 int lparam = rparam ? rparam_len : 0;
90
91 if (buffer_too_large)
92 DEBUG(5,("send_trans_reply: buffer %d too large\n", ldata ));
93
94 this_lparam = MIN(lparam,max_send - 500); /* hack */
95 this_ldata = MIN(ldata,max_send - (500+this_lparam));
96
97 align = ((this_lparam)%4);
98
99 if (buffer_too_large) {
100 ERROR_BOTH(STATUS_BUFFER_OVERFLOW,ERRDOS,ERRmoredata);
101 }
102
103 set_message(inbuf,outbuf,10,1+align+this_ldata+this_lparam,True);
104
105 copy_trans_params_and_data(outbuf, align,
106 rparam, tot_param_sent, this_lparam,
107 rdata, tot_data_sent, this_ldata);
108
109 SSVAL(outbuf,smb_vwv0,lparam);
110 SSVAL(outbuf,smb_vwv1,ldata);
111 SSVAL(outbuf,smb_vwv3,this_lparam);
112 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
113 SSVAL(outbuf,smb_vwv5,0);
114 SSVAL(outbuf,smb_vwv6,this_ldata);
115 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
116 SSVAL(outbuf,smb_vwv8,0);
117 SSVAL(outbuf,smb_vwv9,0);
118
119 show_msg(outbuf);
120 if (!send_smb(smbd_server_fd(),outbuf))
121 exit_server_cleanly("send_trans_reply: send_smb failed.");
122
123 tot_data_sent = this_ldata;
124 tot_param_sent = this_lparam;
125
126 while (tot_data_sent < ldata || tot_param_sent < lparam)
127 {
128 this_lparam = MIN(lparam-tot_param_sent, max_send - 500); /* hack */
129 this_ldata = MIN(ldata -tot_data_sent, max_send - (500+this_lparam));
130
131 if(this_lparam < 0)
132 this_lparam = 0;
133
134 if(this_ldata < 0)
135 this_ldata = 0;
136
137 align = (this_lparam%4);
138
139 set_message(inbuf,outbuf,10,1+this_ldata+this_lparam+align,False);
140
141 copy_trans_params_and_data(outbuf, align,
142 rparam, tot_param_sent, this_lparam,
143 rdata, tot_data_sent, this_ldata);
144
145 SSVAL(outbuf,smb_vwv3,this_lparam);
146 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
147 SSVAL(outbuf,smb_vwv5,tot_param_sent);
148 SSVAL(outbuf,smb_vwv6,this_ldata);
149 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
150 SSVAL(outbuf,smb_vwv8,tot_data_sent);
151 SSVAL(outbuf,smb_vwv9,0);
152
153 show_msg(outbuf);
154 if (!send_smb(smbd_server_fd(),outbuf))
155 exit_server_cleanly("send_trans_reply: send_smb failed.");
156
157 tot_data_sent += this_ldata;
158 tot_param_sent += this_lparam;
159 }
160 }
161
162 /****************************************************************************
163 Start the first part of an RPC reply which began with an SMBtrans request.
164 ****************************************************************************/
165
166 static BOOL api_rpc_trans_reply(const char *inbuf,
167 char *outbuf,
168 smb_np_struct *p)
169 {
170 BOOL is_data_outstanding;
171 char *rdata = (char *)SMB_MALLOC(p->max_trans_reply);
172 int data_len;
173
174 if(rdata == NULL) {
175 DEBUG(0,("api_rpc_trans_reply: malloc fail.\n"));
176 return False;
177 }
178
179 if((data_len = read_from_pipe( p, rdata, p->max_trans_reply,
180 &is_data_outstanding)) < 0) {
181 SAFE_FREE(rdata);
182 return False;
183 }
184
185 send_trans_reply(inbuf, outbuf, NULL, 0, rdata, data_len, is_data_outstanding);
186
187 SAFE_FREE(rdata);
188 return True;
189 }
190
191 /****************************************************************************
192 WaitNamedPipeHandleState
193 ****************************************************************************/
194
195 static BOOL api_WNPHS(const char *inbuf,
196 char *outbuf,
197 smb_np_struct *p,
198 char *param,
199 int param_len)
200 {
201 uint16 priority;
202
203 if (!param || param_len < 2)
204 return False;
205
206 priority = SVAL(param,0);
207 DEBUG(4,("WaitNamedPipeHandleState priority %x\n", priority));
208
209 if (wait_rpc_pipe_hnd_state(p, priority)) {
210 /* now send the reply */
211 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
212 return True;
213 }
214 return False;
215 }
216
217
218 /****************************************************************************
219 SetNamedPipeHandleState
220 ****************************************************************************/
221
222 static BOOL api_SNPHS(const char *inbuf,
223 char *outbuf,
224 smb_np_struct *p,
225 char *param,
226 int param_len)
227 {
228 uint16 id;
229
230 if (!param || param_len < 2)
231 return False;
232
233 id = SVAL(param,0);
234 DEBUG(4,("SetNamedPipeHandleState to code %x\n", id));
235
236 if (set_rpc_pipe_hnd_state(p, id)) {
237 /* now send the reply */
238 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
239 return True;
240 }
241 return False;
242 }
243
244
245 /****************************************************************************
246 When no reply is generated, indicate unsupported.
247 ****************************************************************************/
248
249 static BOOL api_no_reply(const char *inbuf, char *outbuf, int max_rdata_len)
250 {
251 char rparam[4];
252
253 /* unsupported */
254 SSVAL(rparam,0,NERR_notsupported);
255 SSVAL(rparam,2,0); /* converter word */
256
257 DEBUG(3,("Unsupported API fd command\n"));
258
259 /* now send the reply */
260 send_trans_reply(inbuf, outbuf, rparam, 4, NULL, 0, False);
261
262 return -1;
263 }
264
265 /****************************************************************************
266 Handle remote api calls delivered to a named pipe already opened.
267 ****************************************************************************/
268
269 static int api_fd_reply(connection_struct *conn,
270 uint16 vuid,
271 const char *inbuf,
272 char *outbuf,
273 uint16 *setup,
274 char *data,
275 char *params,
276 int suwcnt,
277 int tdscnt,
278 int tpscnt,
279 int mdrcnt,
280 int mprcnt)
281 {
282 BOOL reply = False;
283 smb_np_struct *p = NULL;
284 int pnum;
285 int subcommand;
286
287 DEBUG(5,("api_fd_reply\n"));
288
289 /* First find out the name of this file. */
290 if (suwcnt != 2) {
291 DEBUG(0,("Unexpected named pipe transaction.\n"));
292 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
293 }
294
295 /* Get the file handle and hence the file name. */
296 /*
297 * NB. The setup array has already been transformed
298 * via SVAL and so is in gost byte order.
299 */
300 pnum = ((int)setup[1]) & 0xFFFF;
301 subcommand = ((int)setup[0]) & 0xFFFF;
302
303 if(!(p = get_rpc_pipe(pnum))) {
304 if (subcommand == TRANSACT_WAITNAMEDPIPEHANDLESTATE) {
305 /* Win9x does this call with a unicode pipe name, not a pnum. */
306 /* Just return success for now... */
307 DEBUG(3,("Got TRANSACT_WAITNAMEDPIPEHANDLESTATE on text pipe name\n"));
308 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
309 return -1;
310 }
311
312 DEBUG(1,("api_fd_reply: INVALID PIPE HANDLE: %x\n", pnum));
313 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
314 }
315
316 if (vuid != p->vuid) {
317 DEBUG(1, ("Got pipe request (pnum %x) using invalid VUID %d, "
318 "expected %d\n", pnum, vuid, p->vuid));
319 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
320 }
321
322 DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n", subcommand, p->name, pnum));
323
324 /* record maximum data length that can be transmitted in an SMBtrans */
325 p->max_trans_reply = mdrcnt;
326
327 DEBUG(10,("api_fd_reply: p:%p max_trans_reply: %d\n", p, p->max_trans_reply));
328
329 switch (subcommand) {
330 case TRANSACT_DCERPCCMD:
331 /* dce/rpc command */
332 reply = write_to_pipe(p, data, tdscnt);
333 if (reply)
334 reply = api_rpc_trans_reply(inbuf, outbuf, p);
335 break;
336 case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
337 /* Wait Named Pipe Handle state */
338 reply = api_WNPHS(inbuf, outbuf, p, params, tpscnt);
339 break;
340 case TRANSACT_SETNAMEDPIPEHANDLESTATE:
341 /* Set Named Pipe Handle state */
342 reply = api_SNPHS(inbuf, outbuf, p, params, tpscnt);
343 break;
344 default:
345 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
346 }
347
348 if (!reply)
349 return api_no_reply(inbuf, outbuf, mdrcnt);
350
351 return -1;
352 }
353
354 /****************************************************************************
355 Handle named pipe commands.
356 ****************************************************************************/
357
358 static int named_pipe(connection_struct *conn,
359 uint16 vuid,
360 const char *inbuf,
361 char *outbuf,
362 char *name,
363 uint16 *setup,
364 char *data,
365 char *params,
366 int suwcnt,
367 int tdscnt,
368 int tpscnt,
369 int msrcnt,
370 int mdrcnt,
371 int mprcnt)
372 {
373 DEBUG(3,("named pipe command on <%s> name\n", name));
374
375 if (strequal(name,"LANMAN")) {
376 return api_reply(conn,
377 vuid,
378 inbuf,
379 outbuf,
380 data,
381 params,
382 tdscnt,
383 tpscnt,
384 mdrcnt,
385 mprcnt);
386 }
387
388 if (strequal(name,"WKSSVC") ||
389 strequal(name,"SRVSVC") ||
390 strequal(name,"WINREG") ||
391 strequal(name,"SAMR") ||
392 strequal(name,"LSARPC")) {
393 DEBUG(4,("named pipe command from Win95 (wow!)\n"));
394 return api_fd_reply(conn,
395 vuid,
396 inbuf,
397 outbuf,
398 setup,
399 data,
400 params,
401 suwcnt,
402 tdscnt,
403 tpscnt,
404 mdrcnt,
405 mprcnt);
406 }
407
408 if (strlen(name) < 1) {
409 return api_fd_reply(conn,
410 vuid,
411 inbuf,
412 outbuf,
413 setup,
414 data,
415 params,
416 suwcnt,
417 tdscnt,
418 tpscnt,
419 mdrcnt,
420 mprcnt);
421 }
422
423 if (setup)
424 DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n", (int)setup[0],(int)setup[1]));
425
426 return 0;
427 }
428
429 static NTSTATUS handle_trans(connection_struct *conn,
430 struct trans_state *state,
431 const char *inbuf,
432 char *outbuf,
433 int *outsize)
434 {
435 char *local_machine_name;
436 int name_offset = 0;
437
438 DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
439 state->name,(unsigned int)state->total_data,(unsigned int)state->total_param,
440 (unsigned int)state->setup_count));
441
442 /*
443 * WinCE wierdness....
444 */
445
446 local_machine_name = talloc_asprintf(state, "\\%s\\",
447 get_local_machine_name());
448
449 if (local_machine_name == NULL) {
450 return NT_STATUS_NO_MEMORY;
451 }
452
453 if (strnequal(state->name, local_machine_name,
454 strlen(local_machine_name))) {
455 name_offset = strlen(local_machine_name)-1;
456 }
457
458 if (!strnequal(&state->name[name_offset], "\\PIPE",
459 strlen("\\PIPE"))) {
460 return NT_STATUS_NOT_SUPPORTED;
461 }
462
463 name_offset += strlen("\\PIPE");
464
465 /* Win9x weirdness. When talking to a unicode server Win9x
466 only sends \PIPE instead of \PIPE\ */
467
468 if (state->name[name_offset] == '\\')
469 name_offset++;
470
471 DEBUG(5,("calling named_pipe\n"));
472 *outsize = named_pipe(conn,
473 state->vuid,
474 inbuf,
475 outbuf,
476 state->name+name_offset,
477 state->setup,state->data,
478 state->param,
479 state->setup_count,state->total_data,
480 state->total_param,
481 state->max_setup_return,
482 state->max_data_return,
483 state->max_param_return);
484
485 if (*outsize == 0) {
486 return NT_STATUS_NOT_SUPPORTED;
487 }
488
489 if (state->close_on_completion)
490 close_cnum(conn,state->vuid);
491
492 return NT_STATUS_OK;
493 }
494
495 /****************************************************************************
496 Reply to a SMBtrans.
497 ****************************************************************************/
498
499 int reply_trans(connection_struct *conn,
500 char *inbuf,
501 char *outbuf,
502 int size,
503 int bufsize)
504 {
505 int outsize = 0;
506 unsigned int dsoff = SVAL(inbuf, smb_dsoff);
507 unsigned int dscnt = SVAL(inbuf, smb_dscnt);
508 unsigned int psoff = SVAL(inbuf, smb_psoff);
509 unsigned int pscnt = SVAL(inbuf, smb_pscnt);
510 struct trans_state *state;
511 NTSTATUS result;
512
513 START_PROFILE(SMBtrans);
514
515 result = allow_new_trans(conn->pending_trans, SVAL(inbuf, smb_mid));
516 if (!NT_STATUS_IS_OK(result)) {
517 DEBUG(2, ("Got invalid trans request: %s\n",
518 nt_errstr(result)));
519 END_PROFILE(SMBtrans);
520 return ERROR_NT(result);
521 }
522
523 if ((state = TALLOC_P(conn->mem_ctx, struct trans_state)) == NULL) {
524 DEBUG(0, ("talloc failed\n"));
525 END_PROFILE(SMBtrans);
526 return ERROR_NT(NT_STATUS_NO_MEMORY);
527 }
528
529 state->cmd = SMBtrans;
530
531 state->mid = SVAL(inbuf, smb_mid);
532 state->vuid = SVAL(inbuf, smb_uid);
533 state->setup_count = CVAL(inbuf, smb_suwcnt);
534 state->setup = NULL;
535 state->total_param = SVAL(inbuf, smb_tpscnt);
536 state->param = NULL;
537 state->total_data = SVAL(inbuf, smb_tdscnt);
538 state->data = NULL;
539 state->max_param_return = SVAL(inbuf, smb_mprcnt);
540 state->max_data_return = SVAL(inbuf, smb_mdrcnt);
541 state->max_setup_return = CVAL(inbuf, smb_msrcnt);
542 state->close_on_completion = BITSETW(inbuf+smb_vwv5,0);
543 state->one_way = BITSETW(inbuf+smb_vwv5,1);
544
545 memset(state->name, '\0',sizeof(state->name));
546 srvstr_pull_buf(inbuf, state->name, smb_buf(inbuf),
547 sizeof(state->name), STR_TERMINATE);
548
549 if ((dscnt > state->total_data) || (pscnt > state->total_param))
550 goto bad_param;
551
552 if (state->total_data) {
553 /* Can't use talloc here, the core routines do realloc on the
554 * params and data. Out of paranoia, 100 bytes too many. */
555 state->data = (char *)SMB_MALLOC(state->total_data+100);
556 if (state->data == NULL) {
557 DEBUG(0,("reply_trans: data malloc fail for %u "
558 "bytes !\n", (unsigned int)state->total_data));
559 TALLOC_FREE(state);
560 END_PROFILE(SMBtrans);
561 return(ERROR_DOS(ERRDOS,ERRnomem));
562 }
563 /* null-terminate the slack space */
564 memset(&state->data[state->total_data], 0, 100);
565 if ((dsoff+dscnt < dsoff) || (dsoff+dscnt < dscnt))
566 goto bad_param;
567 if ((smb_base(inbuf)+dsoff+dscnt > inbuf + size) ||
568 (smb_base(inbuf)+dsoff+dscnt < smb_base(inbuf)))
569 goto bad_param;
570
571 memcpy(state->data,smb_base(inbuf)+dsoff,dscnt);
572 }
573
574 if (state->total_param) {
575 /* Can't use talloc here, the core routines do realloc on the
576 * params and data. Out of paranoia, 100 bytes too many */
577 state->param = (char *)SMB_MALLOC(state->total_param+100);
578 if (state->param == NULL) {
579 DEBUG(0,("reply_trans: param malloc fail for %u "
580 "bytes !\n", (unsigned int)state->total_param));
581 SAFE_FREE(state->data);
582 TALLOC_FREE(state);
583 END_PROFILE(SMBtrans);
584 return(ERROR_DOS(ERRDOS,ERRnomem));
585 }
586 /* null-terminate the slack space */
587 memset(&state->param[state->total_param], 0, 100);
588 if ((psoff+pscnt < psoff) || (psoff+pscnt < pscnt))
589 goto bad_param;
590 if ((smb_base(inbuf)+psoff+pscnt > inbuf + size) ||
591 (smb_base(inbuf)+psoff+pscnt < smb_base(inbuf)))
592 goto bad_param;
593
594 memcpy(state->param,smb_base(inbuf)+psoff,pscnt);
595 }
596
597 state->received_data = dscnt;
598 state->received_param = pscnt;
599
600 if (state->setup_count) {
601 unsigned int i;
602 if((state->setup = TALLOC_ARRAY(
603 state, uint16, state->setup_count)) == NULL) {
604 DEBUG(0,("reply_trans: setup malloc fail for %u "
605 "bytes !\n", (unsigned int)
606 (state->setup_count * sizeof(uint16))));
607 TALLOC_FREE(state);
608 END_PROFILE(SMBtrans);
609 return(ERROR_DOS(ERRDOS,ERRnomem));
610 }
611 if (inbuf+smb_vwv14+(state->setup_count*SIZEOFWORD) >
612 inbuf + size)
613 goto bad_param;
614 if ((smb_vwv14+(state->setup_count*SIZEOFWORD) < smb_vwv14) ||
615 (smb_vwv14+(state->setup_count*SIZEOFWORD) <
616 (state->setup_count*SIZEOFWORD)))
617 goto bad_param;
618
619 for (i=0;i<state->setup_count;i++)
620 state->setup[i] = SVAL(inbuf,smb_vwv14+i*SIZEOFWORD);
621 }
622
623 state->received_param = pscnt;
624
625 if ((state->received_param == state->total_param) &&
626 (state->received_data == state->total_data)) {
627
628 result = handle_trans(conn, state, inbuf, outbuf, &outsize);
629
630 SAFE_FREE(state->data);
631 SAFE_FREE(state->param);
632 TALLOC_FREE(state);
633
634 if (!NT_STATUS_IS_OK(result)) {
635 END_PROFILE(SMBtrans);
636 return ERROR_NT(result);
637 }
638
639 if (outsize == 0) {
640 END_PROFILE(SMBtrans);
641 return ERROR_NT(NT_STATUS_INTERNAL_ERROR);
642 }
643
644 END_PROFILE(SMBtrans);
645 return outsize;
646 }
647
648 DLIST_ADD(conn->pending_trans, state);
649
650 /* We need to send an interim response then receive the rest
651 of the parameter/data bytes */
652 outsize = set_message(inbuf,outbuf,0,0,True);
653 show_msg(outbuf);
654 END_PROFILE(SMBtrans);
655 return outsize;
656
657 bad_param:
658
659 DEBUG(0,("reply_trans: invalid trans parameters\n"));
660 SAFE_FREE(state->data);
661 SAFE_FREE(state->param);
662 TALLOC_FREE(state);
663 END_PROFILE(SMBtrans);
664 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
665 }
666
667 /****************************************************************************
668 Reply to a secondary SMBtrans.
669 ****************************************************************************/
670
671 int reply_transs(connection_struct *conn, char *inbuf,char *outbuf,
672 int size, int bufsize)
673 {
674 int outsize = 0;
675 unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
676 struct trans_state *state;
677 NTSTATUS result;
678
679 START_PROFILE(SMBtranss);
680
681 show_msg(inbuf);
682
683 for (state = conn->pending_trans; state != NULL;
684 state = state->next) {
685 if (state->mid == SVAL(inbuf,smb_mid)) {
686 break;
687 }
688 }
689
690 if ((state == NULL) || (state->cmd != SMBtrans)) {
691 END_PROFILE(SMBtranss);
692 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
693 }
694
695 /* Revise total_params and total_data in case they have changed
696 * downwards */
697
698 if (SVAL(inbuf, smb_vwv0) < state->total_param)
699 state->total_param = SVAL(inbuf,smb_vwv0);
700 if (SVAL(inbuf, smb_vwv1) < state->total_data)
701 state->total_data = SVAL(inbuf,smb_vwv1);
702
703 pcnt = SVAL(inbuf, smb_spscnt);
704 poff = SVAL(inbuf, smb_spsoff);
705 pdisp = SVAL(inbuf, smb_spsdisp);
706
707 dcnt = SVAL(inbuf, smb_sdscnt);
708 doff = SVAL(inbuf, smb_sdsoff);
709 ddisp = SVAL(inbuf, smb_sdsdisp);
710
711 state->received_param += pcnt;
712 state->received_data += dcnt;
713
714 if ((state->received_data > state->total_data) ||
715 (state->received_param > state->total_param))
716 goto bad_param;
717
718 if (pcnt) {
719 if (pdisp+pcnt > state->total_param)
720 goto bad_param;
721 if ((pdisp+pcnt < pdisp) || (pdisp+pcnt < pcnt))
722 goto bad_param;
723 if (pdisp > state->total_param)
724 goto bad_param;
725 if ((smb_base(inbuf) + poff + pcnt > inbuf + size) ||
726 (smb_base(inbuf) + poff + pcnt < smb_base(inbuf)))
727 goto bad_param;
728 if (state->param + pdisp < state->param)
729 goto bad_param;
730
731 memcpy(state->param+pdisp,smb_base(inbuf)+poff,
732 pcnt);
733 }
734
735 if (dcnt) {
736 if (ddisp+dcnt > state->total_data)
737 goto bad_param;
738 if ((ddisp+dcnt < ddisp) || (ddisp+dcnt < dcnt))
739 goto bad_param;
740 if (ddisp > state->total_data)
741 goto bad_param;
742 if ((smb_base(inbuf) + doff + dcnt > inbuf + size) ||
743 (smb_base(inbuf) + doff + dcnt < smb_base(inbuf)))
744 goto bad_param;
745 if (state->data + ddisp < state->data)
746 goto bad_param;
747
748 memcpy(state->data+ddisp, smb_base(inbuf)+doff,
749 dcnt);
750 }
751
752 if ((state->received_param < state->total_param) ||
753 (state->received_data < state->total_data)) {
754 END_PROFILE(SMBtranss);
755 return -1;
756 }
757
758 /* construct_reply_common has done us the favor to pre-fill the
759 * command field with SMBtranss which is wrong :-)
760 */
761 SCVAL(outbuf,smb_com,SMBtrans);
762
763 result = handle_trans(conn, state, inbuf, outbuf, &outsize);
764
765 DLIST_REMOVE(conn->pending_trans, state);
766 SAFE_FREE(state->data);
767 SAFE_FREE(state->param);
768 TALLOC_FREE(state);
769
770 if ((outsize == 0) || !NT_STATUS_IS_OK(result)) {
771 END_PROFILE(SMBtranss);
772 return(ERROR_DOS(ERRSRV,ERRnosupport));
773 }
774
775 END_PROFILE(SMBtranss);
776 return(outsize);
777
778 bad_param:
779
780 DEBUG(0,("reply_transs: invalid trans parameters\n"));
781 DLIST_REMOVE(conn->pending_trans, state);
782 SAFE_FREE(state->data);
783 SAFE_FREE(state->param);
784 TALLOC_FREE(state);
785 END_PROFILE(SMBtranss);
786 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
787 }