source: branches/samba-3.0/source/smbd/ipc.c@ 104

Last change on this file since 104 was 26, checked in by Paul Smedley, 18 years ago

Updated source to 3.0.25rc1
File size: 20.7 KB
Line 
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
30extern int max_send;
31
32#define NERR_notsupported 50
33
34extern 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
46static 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
75void send_trans_reply(char *outbuf,
76 char *rparam, int rparam_len,
77 char *rdata, int rdata_len,
78 BOOL buffer_too_large)
79{
80 int this_ldata,this_lparam;
81 int tot_data_sent = 0;
82 int tot_param_sent = 0;
83 int align;
84
85 int ldata = rdata ? rdata_len : 0;
86 int lparam = rparam ? rparam_len : 0;
87
88 if (buffer_too_large)
89 DEBUG(5,("send_trans_reply: buffer %d too large\n", ldata ));
90
91 this_lparam = MIN(lparam,max_send - 500); /* hack */
92 this_ldata = MIN(ldata,max_send - (500+this_lparam));
93
94 align = ((this_lparam)%4);
95
96 if (buffer_too_large) {
97 ERROR_BOTH(STATUS_BUFFER_OVERFLOW,ERRDOS,ERRmoredata);
98 }
99
100 set_message(outbuf,10,1+align+this_ldata+this_lparam,True);
101
102 copy_trans_params_and_data(outbuf, align,
103 rparam, tot_param_sent, this_lparam,
104 rdata, tot_data_sent, this_ldata);
105
106 SSVAL(outbuf,smb_vwv0,lparam);
107 SSVAL(outbuf,smb_vwv1,ldata);
108 SSVAL(outbuf,smb_vwv3,this_lparam);
109 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
110 SSVAL(outbuf,smb_vwv5,0);
111 SSVAL(outbuf,smb_vwv6,this_ldata);
112 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
113 SSVAL(outbuf,smb_vwv8,0);
114 SSVAL(outbuf,smb_vwv9,0);
115
116 show_msg(outbuf);
117 if (!send_smb(smbd_server_fd(),outbuf))
118 exit_server_cleanly("send_trans_reply: send_smb failed.");
119
120 tot_data_sent = this_ldata;
121 tot_param_sent = this_lparam;
122
123 while (tot_data_sent < ldata || tot_param_sent < lparam)
124 {
125 this_lparam = MIN(lparam-tot_param_sent, max_send - 500); /* hack */
126 this_ldata = MIN(ldata -tot_data_sent, max_send - (500+this_lparam));
127
128 if(this_lparam < 0)
129 this_lparam = 0;
130
131 if(this_ldata < 0)
132 this_ldata = 0;
133
134 align = (this_lparam%4);
135
136 set_message(outbuf,10,1+this_ldata+this_lparam+align,False);
137
138 copy_trans_params_and_data(outbuf, align,
139 rparam, tot_param_sent, this_lparam,
140 rdata, tot_data_sent, this_ldata);
141
142 SSVAL(outbuf,smb_vwv3,this_lparam);
143 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
144 SSVAL(outbuf,smb_vwv5,tot_param_sent);
145 SSVAL(outbuf,smb_vwv6,this_ldata);
146 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
147 SSVAL(outbuf,smb_vwv8,tot_data_sent);
148 SSVAL(outbuf,smb_vwv9,0);
149
150 show_msg(outbuf);
151 if (!send_smb(smbd_server_fd(),outbuf))
152 exit_server_cleanly("send_trans_reply: send_smb failed.");
153
154 tot_data_sent += this_ldata;
155 tot_param_sent += this_lparam;
156 }
157}
158
159/****************************************************************************
160 Start the first part of an RPC reply which began with an SMBtrans request.
161****************************************************************************/
162
163static BOOL api_rpc_trans_reply(char *outbuf, smb_np_struct *p)
164{
165 BOOL is_data_outstanding;
166 char *rdata = (char *)SMB_MALLOC(p->max_trans_reply);
167 int data_len;
168
169 if(rdata == NULL) {
170 DEBUG(0,("api_rpc_trans_reply: malloc fail.\n"));
171 return False;
172 }
173
174 if((data_len = read_from_pipe( p, rdata, p->max_trans_reply,
175 &is_data_outstanding)) < 0) {
176 SAFE_FREE(rdata);
177 return False;
178 }
179
180 send_trans_reply(outbuf, NULL, 0, rdata, data_len, is_data_outstanding);
181
182 SAFE_FREE(rdata);
183 return True;
184}
185
186/****************************************************************************
187 WaitNamedPipeHandleState
188****************************************************************************/
189
190static BOOL api_WNPHS(char *outbuf, smb_np_struct *p, char *param, int param_len)
191{
192 uint16 priority;
193
194 if (!param || param_len < 2)
195 return False;
196
197 priority = SVAL(param,0);
198 DEBUG(4,("WaitNamedPipeHandleState priority %x\n", priority));
199
200 if (wait_rpc_pipe_hnd_state(p, priority)) {
201 /* now send the reply */
202 send_trans_reply(outbuf, NULL, 0, NULL, 0, False);
203 return True;
204 }
205 return False;
206}
207
208
209/****************************************************************************
210 SetNamedPipeHandleState
211****************************************************************************/
212
213static BOOL api_SNPHS(char *outbuf, smb_np_struct *p, char *param, int param_len)
214{
215 uint16 id;
216
217 if (!param || param_len < 2)
218 return False;
219
220 id = SVAL(param,0);
221 DEBUG(4,("SetNamedPipeHandleState to code %x\n", id));
222
223 if (set_rpc_pipe_hnd_state(p, id)) {
224 /* now send the reply */
225 send_trans_reply(outbuf, NULL, 0, NULL, 0, False);
226 return True;
227 }
228 return False;
229}
230
231
232/****************************************************************************
233 When no reply is generated, indicate unsupported.
234 ****************************************************************************/
235
236static BOOL api_no_reply(char *outbuf, int max_rdata_len)
237{
238 char rparam[4];
239
240 /* unsupported */
241 SSVAL(rparam,0,NERR_notsupported);
242 SSVAL(rparam,2,0); /* converter word */
243
244 DEBUG(3,("Unsupported API fd command\n"));
245
246 /* now send the reply */
247 send_trans_reply(outbuf, rparam, 4, NULL, 0, False);
248
249 return -1;
250}
251
252/****************************************************************************
253 Handle remote api calls delivered to a named pipe already opened.
254 ****************************************************************************/
255
256static int api_fd_reply(connection_struct *conn,uint16 vuid,char *outbuf,
257 uint16 *setup,char *data,char *params,
258 int suwcnt,int tdscnt,int tpscnt,int mdrcnt,int mprcnt)
259{
260 BOOL reply = False;
261 smb_np_struct *p = NULL;
262 int pnum;
263 int subcommand;
264
265 DEBUG(5,("api_fd_reply\n"));
266
267 /* First find out the name of this file. */
268 if (suwcnt != 2) {
269 DEBUG(0,("Unexpected named pipe transaction.\n"));
270 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
271 }
272
273 /* Get the file handle and hence the file name. */
274 /*
275 * NB. The setup array has already been transformed
276 * via SVAL and so is in gost byte order.
277 */
278 pnum = ((int)setup[1]) & 0xFFFF;
279 subcommand = ((int)setup[0]) & 0xFFFF;
280
281 if(!(p = get_rpc_pipe(pnum))) {
282 if (subcommand == TRANSACT_WAITNAMEDPIPEHANDLESTATE) {
283 /* Win9x does this call with a unicode pipe name, not a pnum. */
284 /* Just return success for now... */
285 DEBUG(3,("Got TRANSACT_WAITNAMEDPIPEHANDLESTATE on text pipe name\n"));
286 send_trans_reply(outbuf, NULL, 0, NULL, 0, False);
287 return -1;
288 }
289
290 DEBUG(1,("api_fd_reply: INVALID PIPE HANDLE: %x\n", pnum));
291 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
292 }
293
294 if (vuid != p->vuid) {
295 DEBUG(1, ("Got pipe request (pnum %x) using invalid VUID %d, "
296 "expected %d\n", pnum, vuid, p->vuid));
297 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
298 }
299
300 DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n", subcommand, p->name, pnum));
301
302 /* record maximum data length that can be transmitted in an SMBtrans */
303 p->max_trans_reply = mdrcnt;
304
305 DEBUG(10,("api_fd_reply: p:%p max_trans_reply: %d\n", p, p->max_trans_reply));
306
307 switch (subcommand) {
308 case TRANSACT_DCERPCCMD:
309 /* dce/rpc command */
310 reply = write_to_pipe(p, data, tdscnt);
311 if (reply)
312 reply = api_rpc_trans_reply(outbuf, p);
313 break;
314 case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
315 /* Wait Named Pipe Handle state */
316 reply = api_WNPHS(outbuf, p, params, tpscnt);
317 break;
318 case TRANSACT_SETNAMEDPIPEHANDLESTATE:
319 /* Set Named Pipe Handle state */
320 reply = api_SNPHS(outbuf, p, params, tpscnt);
321 break;
322 default:
323 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
324 }
325
326 if (!reply)
327 return api_no_reply(outbuf, mdrcnt);
328
329 return -1;
330}
331
332/****************************************************************************
333 handle named pipe commands
334 ****************************************************************************/
335static int named_pipe(connection_struct *conn,uint16 vuid, char *outbuf,char *name,
336 uint16 *setup,char *data,char *params,
337 int suwcnt,int tdscnt,int tpscnt,
338 int msrcnt,int mdrcnt,int mprcnt)
339{
340 DEBUG(3,("named pipe command on <%s> name\n", name));
341
342 if (strequal(name,"LANMAN"))
343 return api_reply(conn,vuid,outbuf,data,params,tdscnt,tpscnt,mdrcnt,mprcnt);
344
345 if (strequal(name,"WKSSVC") ||
346 strequal(name,"SRVSVC") ||
347 strequal(name,"WINREG") ||
348 strequal(name,"SAMR") ||
349 strequal(name,"LSARPC"))
350 {
351 DEBUG(4,("named pipe command from Win95 (wow!)\n"));
352 return api_fd_reply(conn,vuid,outbuf,setup,data,params,suwcnt,tdscnt,tpscnt,mdrcnt,mprcnt);
353 }
354
355 if (strlen(name) < 1)
356 return api_fd_reply(conn,vuid,outbuf,setup,data,params,suwcnt,tdscnt,tpscnt,mdrcnt,mprcnt);
357
358 if (setup)
359 DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n", (int)setup[0],(int)setup[1]));
360
361 return 0;
362}
363
364static NTSTATUS handle_trans(connection_struct *conn,
365 struct trans_state *state,
366 char *outbuf, int *outsize)
367{
368 char *local_machine_name;
369 int name_offset = 0;
370
371 DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
372 state->name,(unsigned int)state->total_data,(unsigned int)state->total_param,
373 (unsigned int)state->setup_count));
374
375 /*
376 * WinCE wierdness....
377 */
378
379 local_machine_name = talloc_asprintf(state, "\\%s\\",
380 get_local_machine_name());
381
382 if (local_machine_name == NULL) {
383 return NT_STATUS_NO_MEMORY;
384 }
385
386 if (strnequal(state->name, local_machine_name,
387 strlen(local_machine_name))) {
388 name_offset = strlen(local_machine_name)-1;
389 }
390
391 if (!strnequal(&state->name[name_offset], "\\PIPE",
392 strlen("\\PIPE"))) {
393 return NT_STATUS_NOT_SUPPORTED;
394 }
395
396 name_offset += strlen("\\PIPE");
397
398 /* Win9x weirdness. When talking to a unicode server Win9x
399 only sends \PIPE instead of \PIPE\ */
400
401 if (state->name[name_offset] == '\\')
402 name_offset++;
403
404 DEBUG(5,("calling named_pipe\n"));
405 *outsize = named_pipe(conn, state->vuid, outbuf,
406 state->name+name_offset,
407 state->setup,state->data,
408 state->param,
409 state->setup_count,state->total_data,
410 state->total_param,
411 state->max_setup_return,
412 state->max_data_return,
413 state->max_param_return);
414
415 if (*outsize == 0) {
416 return NT_STATUS_NOT_SUPPORTED;
417 }
418
419 if (state->close_on_completion)
420 close_cnum(conn,state->vuid);
421
422 return NT_STATUS_OK;
423}
424
425/****************************************************************************
426 Reply to a SMBtrans.
427 ****************************************************************************/
428
429int reply_trans(connection_struct *conn, char *inbuf,char *outbuf,
430 int size, int bufsize)
431{
432 int outsize = 0;
433 unsigned int dsoff = SVAL(inbuf, smb_dsoff);
434 unsigned int dscnt = SVAL(inbuf, smb_dscnt);
435 unsigned int psoff = SVAL(inbuf, smb_psoff);
436 unsigned int pscnt = SVAL(inbuf, smb_pscnt);
437 struct trans_state *state;
438 NTSTATUS result;
439
440 START_PROFILE(SMBtrans);
441
442 result = allow_new_trans(conn->pending_trans, SVAL(inbuf, smb_mid));
443 if (!NT_STATUS_IS_OK(result)) {
444 DEBUG(2, ("Got invalid trans request: %s\n",
445 nt_errstr(result)));
446 END_PROFILE(SMBtrans);
447 return ERROR_NT(result);
448 }
449
450 if ((state = TALLOC_P(conn->mem_ctx, struct trans_state)) == NULL) {
451 DEBUG(0, ("talloc failed\n"));
452 END_PROFILE(SMBtrans);
453 return ERROR_NT(NT_STATUS_NO_MEMORY);
454 }
455
456 state->cmd = SMBtrans;
457
458 state->mid = SVAL(inbuf, smb_mid);
459 state->vuid = SVAL(inbuf, smb_uid);
460 state->setup_count = CVAL(inbuf, smb_suwcnt);
461 state->setup = NULL;
462 state->total_param = SVAL(inbuf, smb_tpscnt);
463 state->param = NULL;
464 state->total_data = SVAL(inbuf, smb_tdscnt);
465 state->data = NULL;
466 state->max_param_return = SVAL(inbuf, smb_mprcnt);
467 state->max_data_return = SVAL(inbuf, smb_mdrcnt);
468 state->max_setup_return = CVAL(inbuf, smb_msrcnt);
469 state->close_on_completion = BITSETW(inbuf+smb_vwv5,0);
470 state->one_way = BITSETW(inbuf+smb_vwv5,1);
471
472 memset(state->name, '\0',sizeof(state->name));
473 srvstr_pull_buf(inbuf, state->name, smb_buf(inbuf),
474 sizeof(state->name), STR_TERMINATE);
475
476 if ((dscnt > state->total_data) || (pscnt > state->total_param))
477 goto bad_param;
478
479 if (state->total_data) {
480 /* Can't use talloc here, the core routines do realloc on the
481 * params and data. Out of paranoia, 100 bytes too many. */
482 state->data = (char *)SMB_MALLOC(state->total_data+100);
483 if (state->data == NULL) {
484 DEBUG(0,("reply_trans: data malloc fail for %u "
485 "bytes !\n", (unsigned int)state->total_data));
486 TALLOC_FREE(state);
487 END_PROFILE(SMBtrans);
488 return(ERROR_DOS(ERRDOS,ERRnomem));
489 }
490 /* null-terminate the slack space */
491 memset(&state->data[state->total_data], 0, 100);
492 if ((dsoff+dscnt < dsoff) || (dsoff+dscnt < dscnt))
493 goto bad_param;
494 if ((smb_base(inbuf)+dsoff+dscnt > inbuf + size) ||
495 (smb_base(inbuf)+dsoff+dscnt < smb_base(inbuf)))
496 goto bad_param;
497
498 memcpy(state->data,smb_base(inbuf)+dsoff,dscnt);
499 }
500
501 if (state->total_param) {
502 /* Can't use talloc here, the core routines do realloc on the
503 * params and data. Out of paranoia, 100 bytes too many */
504 state->param = (char *)SMB_MALLOC(state->total_param+100);
505 if (state->param == NULL) {
506 DEBUG(0,("reply_trans: param malloc fail for %u "
507 "bytes !\n", (unsigned int)state->total_param));
508 SAFE_FREE(state->data);
509 TALLOC_FREE(state);
510 END_PROFILE(SMBtrans);
511 return(ERROR_DOS(ERRDOS,ERRnomem));
512 }
513 /* null-terminate the slack space */
514 memset(&state->param[state->total_param], 0, 100);
515 if ((psoff+pscnt < psoff) || (psoff+pscnt < pscnt))
516 goto bad_param;
517 if ((smb_base(inbuf)+psoff+pscnt > inbuf + size) ||
518 (smb_base(inbuf)+psoff+pscnt < smb_base(inbuf)))
519 goto bad_param;
520
521 memcpy(state->param,smb_base(inbuf)+psoff,pscnt);
522 }
523
524 state->received_data = dscnt;
525 state->received_param = pscnt;
526
527 if (state->setup_count) {
528 unsigned int i;
529 if((state->setup = TALLOC_ARRAY(
530 state, uint16, state->setup_count)) == NULL) {
531 DEBUG(0,("reply_trans: setup malloc fail for %u "
532 "bytes !\n", (unsigned int)
533 (state->setup_count * sizeof(uint16))));
534 TALLOC_FREE(state);
535 END_PROFILE(SMBtrans);
536 return(ERROR_DOS(ERRDOS,ERRnomem));
537 }
538 if (inbuf+smb_vwv14+(state->setup_count*SIZEOFWORD) >
539 inbuf + size)
540 goto bad_param;
541 if ((smb_vwv14+(state->setup_count*SIZEOFWORD) < smb_vwv14) ||
542 (smb_vwv14+(state->setup_count*SIZEOFWORD) <
543 (state->setup_count*SIZEOFWORD)))
544 goto bad_param;
545
546 for (i=0;i<state->setup_count;i++)
547 state->setup[i] = SVAL(inbuf,smb_vwv14+i*SIZEOFWORD);
548 }
549
550 state->received_param = pscnt;
551
552 if ((state->received_param == state->total_param) &&
553 (state->received_data == state->total_data)) {
554
555 result = handle_trans(conn, state, outbuf, &outsize);
556
557 SAFE_FREE(state->data);
558 SAFE_FREE(state->param);
559 TALLOC_FREE(state);
560
561 if (!NT_STATUS_IS_OK(result)) {
562 END_PROFILE(SMBtrans);
563 return ERROR_NT(result);
564 }
565
566 if (outsize == 0) {
567 END_PROFILE(SMBtrans);
568 return ERROR_NT(NT_STATUS_INTERNAL_ERROR);
569 }
570
571 END_PROFILE(SMBtrans);
572 return outsize;
573 }
574
575 DLIST_ADD(conn->pending_trans, state);
576
577 /* We need to send an interim response then receive the rest
578 of the parameter/data bytes */
579 outsize = set_message(outbuf,0,0,True);
580 show_msg(outbuf);
581 END_PROFILE(SMBtrans);
582 return outsize;
583
584 bad_param:
585
586 DEBUG(0,("reply_trans: invalid trans parameters\n"));
587 SAFE_FREE(state->data);
588 SAFE_FREE(state->param);
589 TALLOC_FREE(state);
590 END_PROFILE(SMBtrans);
591 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
592}
593
594/****************************************************************************
595 Reply to a secondary SMBtrans.
596 ****************************************************************************/
597
598int reply_transs(connection_struct *conn, char *inbuf,char *outbuf,
599 int size, int bufsize)
600{
601 int outsize = 0;
602 unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
603 struct trans_state *state;
604 NTSTATUS result;
605
606 START_PROFILE(SMBtranss);
607
608 show_msg(inbuf);
609
610 for (state = conn->pending_trans; state != NULL;
611 state = state->next) {
612 if (state->mid == SVAL(inbuf,smb_mid)) {
613 break;
614 }
615 }
616
617 if ((state == NULL) || (state->cmd != SMBtrans)) {
618 END_PROFILE(SMBtranss);
619 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
620 }
621
622 /* Revise total_params and total_data in case they have changed
623 * downwards */
624
625 if (SVAL(inbuf, smb_vwv0) < state->total_param)
626 state->total_param = SVAL(inbuf,smb_vwv0);
627 if (SVAL(inbuf, smb_vwv1) < state->total_data)
628 state->total_data = SVAL(inbuf,smb_vwv1);
629
630 pcnt = SVAL(inbuf, smb_spscnt);
631 poff = SVAL(inbuf, smb_spsoff);
632 pdisp = SVAL(inbuf, smb_spsdisp);
633
634 dcnt = SVAL(inbuf, smb_sdscnt);
635 doff = SVAL(inbuf, smb_sdsoff);
636 ddisp = SVAL(inbuf, smb_sdsdisp);
637
638 state->received_param += pcnt;
639 state->received_data += dcnt;
640
641 if ((state->received_data > state->total_data) ||
642 (state->received_param > state->total_param))
643 goto bad_param;
644
645 if (pcnt) {
646 if (pdisp+pcnt > state->total_param)
647 goto bad_param;
648 if ((pdisp+pcnt < pdisp) || (pdisp+pcnt < pcnt))
649 goto bad_param;
650 if (pdisp > state->total_param)
651 goto bad_param;
652 if ((smb_base(inbuf) + poff + pcnt > inbuf + size) ||
653 (smb_base(inbuf) + poff + pcnt < smb_base(inbuf)))
654 goto bad_param;
655 if (state->param + pdisp < state->param)
656 goto bad_param;
657
658 memcpy(state->param+pdisp,smb_base(inbuf)+poff,
659 pcnt);
660 }
661
662 if (dcnt) {
663 if (ddisp+dcnt > state->total_data)
664 goto bad_param;
665 if ((ddisp+dcnt < ddisp) || (ddisp+dcnt < dcnt))
666 goto bad_param;
667 if (ddisp > state->total_data)
668 goto bad_param;
669 if ((smb_base(inbuf) + doff + dcnt > inbuf + size) ||
670 (smb_base(inbuf) + doff + dcnt < smb_base(inbuf)))
671 goto bad_param;
672 if (state->data + ddisp < state->data)
673 goto bad_param;
674
675 memcpy(state->data+ddisp, smb_base(inbuf)+doff,
676 dcnt);
677 }
678
679 if ((state->received_param < state->total_param) ||
680 (state->received_data < state->total_data)) {
681 END_PROFILE(SMBtranss);
682 return -1;
683 }
684
685 /* construct_reply_common has done us the favor to pre-fill the
686 * command field with SMBtranss which is wrong :-)
687 */
688 SCVAL(outbuf,smb_com,SMBtrans);
689
690 result = handle_trans(conn, state, outbuf, &outsize);
691
692 DLIST_REMOVE(conn->pending_trans, state);
693 SAFE_FREE(state->data);
694 SAFE_FREE(state->param);
695 TALLOC_FREE(state);
696
697 if ((outsize == 0) || !NT_STATUS_IS_OK(result)) {
698 END_PROFILE(SMBtranss);
699 return(ERROR_DOS(ERRSRV,ERRnosupport));
700 }
701
702 END_PROFILE(SMBtranss);
703 return(outsize);
704
705 bad_param:
706
707 DEBUG(0,("reply_transs: invalid trans parameters\n"));
708 DLIST_REMOVE(conn->pending_trans, state);
709 SAFE_FREE(state->data);
710 SAFE_FREE(state->param);
711 TALLOC_FREE(state);
712 END_PROFILE(SMBtranss);
713 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
714}
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