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librpc: rerun make idl
[Samba/gbeck.git] / source3 / smbd / ipc.c
blobd18b5debe0da46acfeb7126e22e7bb38348f2f88
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 3 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, see <http://www.gnu.org/licenses/>.
21 */
22 /*
23 This file handles the named pipe and mailslot calls
24 in the SMBtrans protocol
25 */
26
27 #include "includes.h"
28 #include "smbd/globals.h"
29
30 #define NERR_notsupported 50
31
32 static void api_no_reply(connection_struct *conn, struct smb_request *req);
33
34 /*******************************************************************
35 copies parameters and data, as needed, into the smb buffer
36
37 *both* the data and params sections should be aligned. this
38 is fudged in the rpc pipes by
39 at present, only the data section is. this may be a possible
40 cause of some of the ipc problems being experienced. lkcl26dec97
41
42 ******************************************************************/
43
44 static void copy_trans_params_and_data(char *outbuf, int align,
45 char *rparam, int param_offset, int param_len,
46 char *rdata, int data_offset, int data_len)
47 {
48 char *copy_into = smb_buf(outbuf);
49
50 if(param_len < 0)
51 param_len = 0;
52
53 if(data_len < 0)
54 data_len = 0;
55
56 DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d] (align %d)\n",
57 param_offset, param_offset + param_len,
58 data_offset , data_offset + data_len,
59 align));
60
61 *copy_into = '\0';
62
63 copy_into += 1;
64
65 if (param_len)
66 memcpy(copy_into, &rparam[param_offset], param_len);
67
68 copy_into += param_len;
69 if (align) {
70 memset(copy_into, '\0', align);
71 }
72
73 copy_into += align;
74
75 if (data_len )
76 memcpy(copy_into, &rdata[data_offset], data_len);
77 }
78
79 /****************************************************************************
80 Send a trans reply.
81 ****************************************************************************/
82
83 void send_trans_reply(connection_struct *conn,
84 struct smb_request *req,
85 char *rparam, int rparam_len,
86 char *rdata, int rdata_len,
87 bool buffer_too_large)
88 {
89 int this_ldata,this_lparam;
90 int tot_data_sent = 0;
91 int tot_param_sent = 0;
92 int align;
93
94 int ldata = rdata ? rdata_len : 0;
95 int lparam = rparam ? rparam_len : 0;
96
97 if (buffer_too_large)
98 DEBUG(5,("send_trans_reply: buffer %d too large\n", ldata ));
99
100 this_lparam = MIN(lparam,max_send - 500); /* hack */
101 this_ldata = MIN(ldata,max_send - (500+this_lparam));
102
103 align = ((this_lparam)%4);
104
105 reply_outbuf(req, 10, 1+align+this_ldata+this_lparam);
106
107 /*
108 * We might have SMBtranss in req which was transferred to the outbuf,
109 * fix that.
110 */
111 SCVAL(req->outbuf, smb_com, SMBtrans);
112
113 copy_trans_params_and_data((char *)req->outbuf, align,
114 rparam, tot_param_sent, this_lparam,
115 rdata, tot_data_sent, this_ldata);
116
117 SSVAL(req->outbuf,smb_vwv0,lparam);
118 SSVAL(req->outbuf,smb_vwv1,ldata);
119 SSVAL(req->outbuf,smb_vwv3,this_lparam);
120 SSVAL(req->outbuf,smb_vwv4,
121 smb_offset(smb_buf(req->outbuf)+1, req->outbuf));
122 SSVAL(req->outbuf,smb_vwv5,0);
123 SSVAL(req->outbuf,smb_vwv6,this_ldata);
124 SSVAL(req->outbuf,smb_vwv7,
125 smb_offset(smb_buf(req->outbuf)+1+this_lparam+align,
126 req->outbuf));
127 SSVAL(req->outbuf,smb_vwv8,0);
128 SSVAL(req->outbuf,smb_vwv9,0);
129
130 if (buffer_too_large) {
131 error_packet_set((char *)req->outbuf, ERRDOS, ERRmoredata,
132 STATUS_BUFFER_OVERFLOW, __LINE__, __FILE__);
133 }
134
135 show_msg((char *)req->outbuf);
136 if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
137 IS_CONN_ENCRYPTED(conn), &req->pcd)) {
138 exit_server_cleanly("send_trans_reply: srv_send_smb failed.");
139 }
140
141 TALLOC_FREE(req->outbuf);
142
143 tot_data_sent = this_ldata;
144 tot_param_sent = this_lparam;
145
146 while (tot_data_sent < ldata || tot_param_sent < lparam)
147 {
148 this_lparam = MIN(lparam-tot_param_sent,
149 max_send - 500); /* hack */
150 this_ldata = MIN(ldata -tot_data_sent,
151 max_send - (500+this_lparam));
152
153 if(this_lparam < 0)
154 this_lparam = 0;
155
156 if(this_ldata < 0)
157 this_ldata = 0;
158
159 align = (this_lparam%4);
160
161 reply_outbuf(req, 10, 1+align+this_ldata+this_lparam);
162
163 /*
164 * We might have SMBtranss in req which was transferred to the
165 * outbuf, fix that.
166 */
167 SCVAL(req->outbuf, smb_com, SMBtrans);
168
169 copy_trans_params_and_data((char *)req->outbuf, align,
170 rparam, tot_param_sent, this_lparam,
171 rdata, tot_data_sent, this_ldata);
172
173 SSVAL(req->outbuf,smb_vwv3,this_lparam);
174 SSVAL(req->outbuf,smb_vwv4,
175 smb_offset(smb_buf(req->outbuf)+1,req->outbuf));
176 SSVAL(req->outbuf,smb_vwv5,tot_param_sent);
177 SSVAL(req->outbuf,smb_vwv6,this_ldata);
178 SSVAL(req->outbuf,smb_vwv7,
179 smb_offset(smb_buf(req->outbuf)+1+this_lparam+align,
180 req->outbuf));
181 SSVAL(req->outbuf,smb_vwv8,tot_data_sent);
182 SSVAL(req->outbuf,smb_vwv9,0);
183
184 if (buffer_too_large) {
185 error_packet_set((char *)req->outbuf,
186 ERRDOS, ERRmoredata,
187 STATUS_BUFFER_OVERFLOW,
188 __LINE__, __FILE__);
189 }
190
191 show_msg((char *)req->outbuf);
192 if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
193 IS_CONN_ENCRYPTED(conn), &req->pcd))
194 exit_server_cleanly("send_trans_reply: srv_send_smb "
195 "failed.");
196
197 tot_data_sent += this_ldata;
198 tot_param_sent += this_lparam;
199 TALLOC_FREE(req->outbuf);
200 }
201 }
202
203 /****************************************************************************
204 Start the first part of an RPC reply which began with an SMBtrans request.
205 ****************************************************************************/
206
207 struct dcerpc_cmd_state {
208 struct fake_file_handle *handle;
209 uint8_t *data;
210 size_t num_data;
211 size_t max_read;
212 };
213
214 static void api_dcerpc_cmd_write_done(struct async_req *subreq);
215 static void api_dcerpc_cmd_read_done(struct async_req *subreq);
216
217 static void api_dcerpc_cmd(connection_struct *conn, struct smb_request *req,
218 files_struct *fsp, uint8_t *data, size_t length,
219 size_t max_read)
220 {
221 struct async_req *subreq;
222 struct dcerpc_cmd_state *state;
223
224 if (!fsp_is_np(fsp)) {
225 api_no_reply(conn, req);
226 return;
227 }
228
229 state = talloc(req, struct dcerpc_cmd_state);
230 if (state == NULL) {
231 reply_nterror(req, NT_STATUS_NO_MEMORY);
232 return;
233 }
234 req->async_priv = state;
235
236 state->handle = fsp->fake_file_handle;
237
238 /*
239 * This memdup severely sucks. But doing it properly essentially means
240 * to rewrite lanman.c, something which I don't really want to do now.
241 */
242 state->data = (uint8_t *)talloc_memdup(state, data, length);
243 if (state->data == NULL) {
244 reply_nterror(req, NT_STATUS_NO_MEMORY);
245 return;
246 }
247 state->num_data = length;
248 state->max_read = max_read;
249
250 subreq = np_write_send(state, smbd_event_context(), state->handle,
251 state->data, length);
252 if (subreq == NULL) {
253 TALLOC_FREE(state);
254 reply_nterror(req, NT_STATUS_NO_MEMORY);
255 return;
256 }
257 subreq->async.fn = api_dcerpc_cmd_write_done;
258 subreq->async.priv = talloc_move(conn, &req);
259 }
260
261 static void api_dcerpc_cmd_write_done(struct async_req *subreq)
262 {
263 struct smb_request *req = talloc_get_type_abort(
264 subreq->async.priv, struct smb_request);
265 struct dcerpc_cmd_state *state = talloc_get_type_abort(
266 req->async_priv, struct dcerpc_cmd_state);
267 NTSTATUS status;
268 ssize_t nwritten = -1;
269
270 status = np_write_recv(subreq, &nwritten);
271 TALLOC_FREE(subreq);
272 if (!NT_STATUS_IS_OK(status) || (nwritten != state->num_data)) {
273 DEBUG(10, ("Could not write to pipe: %s (%d/%d)\n",
274 nt_errstr(status), (int)state->num_data,
275 (int)nwritten));
276 reply_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
277 goto send;
278 }
279
280 state->data = TALLOC_REALLOC_ARRAY(state, state->data, uint8_t,
281 state->max_read);
282 if (state->data == NULL) {
283 reply_nterror(req, NT_STATUS_NO_MEMORY);
284 goto send;
285 }
286
287 subreq = np_read_send(req->conn, smbd_event_context(),
288 state->handle, state->data, state->max_read);
289 if (subreq == NULL) {
290 reply_nterror(req, NT_STATUS_NO_MEMORY);
291 goto send;
292 }
293
294 subreq->async.fn = api_dcerpc_cmd_read_done;
295 subreq->async.priv = req;
296 return;
297
298 send:
299 if (!srv_send_smb(
300 smbd_server_fd(), (char *)req->outbuf,
301 IS_CONN_ENCRYPTED(req->conn) || req->encrypted,
302 &req->pcd)) {
303 exit_server_cleanly("construct_reply: srv_send_smb failed.");
304 }
305 TALLOC_FREE(req);
306 }
307
308 static void api_dcerpc_cmd_read_done(struct async_req *subreq)
309 {
310 struct smb_request *req = talloc_get_type_abort(
311 subreq->async.priv, struct smb_request);
312 struct dcerpc_cmd_state *state = talloc_get_type_abort(
313 req->async_priv, struct dcerpc_cmd_state);
314 NTSTATUS status;
315 ssize_t nread;
316 bool is_data_outstanding;
317
318 status = np_read_recv(subreq, &nread, &is_data_outstanding);
319 TALLOC_FREE(subreq);
320
321 if (!NT_STATUS_IS_OK(status)) {
322 DEBUG(10, ("Could not read from to pipe: %s\n",
323 nt_errstr(status)));
324 reply_nterror(req, status);
325
326 if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
327 IS_CONN_ENCRYPTED(req->conn)
328 ||req->encrypted, &req->pcd)) {
329 exit_server_cleanly("construct_reply: srv_send_smb "
330 "failed.");
331 }
332 TALLOC_FREE(req);
333 return;
334 }
335
336 send_trans_reply(req->conn, req, NULL, 0, (char *)state->data, nread,
337 is_data_outstanding);
338 TALLOC_FREE(req);
339 }
340
341 /****************************************************************************
342 WaitNamedPipeHandleState
343 ****************************************************************************/
344
345 static void api_WNPHS(connection_struct *conn, struct smb_request *req,
346 struct files_struct *fsp, char *param, int param_len)
347 {
348 if (!param || param_len < 2) {
349 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
350 return;
351 }
352
353 DEBUG(4,("WaitNamedPipeHandleState priority %x\n",
354 (int)SVAL(param,0)));
355
356 send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
357 }
358
359
360 /****************************************************************************
361 SetNamedPipeHandleState
362 ****************************************************************************/
363
364 static void api_SNPHS(connection_struct *conn, struct smb_request *req,
365 struct files_struct *fsp, char *param, int param_len)
366 {
367 if (!param || param_len < 2) {
368 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
369 return;
370 }
371
372 DEBUG(4,("SetNamedPipeHandleState to code %x\n", (int)SVAL(param,0)));
373
374 send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
375 }
376
377
378 /****************************************************************************
379 When no reply is generated, indicate unsupported.
380 ****************************************************************************/
381
382 static void api_no_reply(connection_struct *conn, struct smb_request *req)
383 {
384 char rparam[4];
385
386 /* unsupported */
387 SSVAL(rparam,0,NERR_notsupported);
388 SSVAL(rparam,2,0); /* converter word */
389
390 DEBUG(3,("Unsupported API fd command\n"));
391
392 /* now send the reply */
393 send_trans_reply(conn, req, rparam, 4, NULL, 0, False);
394
395 return;
396 }
397
398 /****************************************************************************
399 Handle remote api calls delivered to a named pipe already opened.
400 ****************************************************************************/
401
402 static void api_fd_reply(connection_struct *conn, uint16 vuid,
403 struct smb_request *req,
404 uint16 *setup, uint8_t *data, char *params,
405 int suwcnt, int tdscnt, int tpscnt,
406 int mdrcnt, int mprcnt)
407 {
408 struct files_struct *fsp;
409 int pnum;
410 int subcommand;
411
412 DEBUG(5,("api_fd_reply\n"));
413
414 /* First find out the name of this file. */
415 if (suwcnt != 2) {
416 DEBUG(0,("Unexpected named pipe transaction.\n"));
417 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
418 return;
419 }
420
421 /* Get the file handle and hence the file name. */
422 /*
423 * NB. The setup array has already been transformed
424 * via SVAL and so is in host byte order.
425 */
426 pnum = ((int)setup[1]) & 0xFFFF;
427 subcommand = ((int)setup[0]) & 0xFFFF;
428
429 fsp = file_fsp(req, pnum);
430
431 if (!fsp_is_np(fsp)) {
432 if (subcommand == TRANSACT_WAITNAMEDPIPEHANDLESTATE) {
433 /* Win9x does this call with a unicode pipe name, not a pnum. */
434 /* Just return success for now... */
435 DEBUG(3,("Got TRANSACT_WAITNAMEDPIPEHANDLESTATE on text pipe name\n"));
436 send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
437 return;
438 }
439
440 DEBUG(1,("api_fd_reply: INVALID PIPE HANDLE: %x\n", pnum));
441 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
442 return;
443 }
444
445 if (vuid != fsp->vuid) {
446 DEBUG(1, ("Got pipe request (pnum %x) using invalid VUID %d, "
447 "expected %d\n", pnum, vuid, fsp->vuid));
448 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
449 return;
450 }
451
452 DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n",
453 subcommand, fsp->fsp_name, pnum));
454
455 DEBUG(10, ("api_fd_reply: p:%p max_trans_reply: %d\n", fsp, mdrcnt));
456
457 switch (subcommand) {
458 case TRANSACT_DCERPCCMD: {
459 /* dce/rpc command */
460 api_dcerpc_cmd(conn, req, fsp, (uint8_t *)data, tdscnt,
461 mdrcnt);
462 break;
463 }
464 case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
465 /* Wait Named Pipe Handle state */
466 api_WNPHS(conn, req, fsp, params, tpscnt);
467 break;
468 case TRANSACT_SETNAMEDPIPEHANDLESTATE:
469 /* Set Named Pipe Handle state */
470 api_SNPHS(conn, req, fsp, params, tpscnt);
471 break;
472 default:
473 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
474 return;
475 }
476 }
477
478 /****************************************************************************
479 Handle named pipe commands.
480 ****************************************************************************/
481
482 static void named_pipe(connection_struct *conn, uint16 vuid,
483 struct smb_request *req,
484 const char *name, uint16 *setup,
485 char *data, char *params,
486 int suwcnt, int tdscnt,int tpscnt,
487 int msrcnt, int mdrcnt, int mprcnt)
488 {
489 DEBUG(3,("named pipe command on <%s> name\n", name));
490
491 if (strequal(name,"LANMAN")) {
492 api_reply(conn, vuid, req,
493 data, params,
494 tdscnt, tpscnt,
495 mdrcnt, mprcnt);
496 return;
497 }
498
499 if (strequal(name,"WKSSVC") ||
500 strequal(name,"SRVSVC") ||
501 strequal(name,"WINREG") ||
502 strequal(name,"SAMR") ||
503 strequal(name,"LSARPC")) {
504
505 DEBUG(4,("named pipe command from Win95 (wow!)\n"));
506
507 api_fd_reply(conn, vuid, req,
508 setup, (uint8_t *)data, params,
509 suwcnt, tdscnt, tpscnt,
510 mdrcnt, mprcnt);
511 return;
512 }
513
514 if (strlen(name) < 1) {
515 api_fd_reply(conn, vuid, req,
516 setup, (uint8_t *)data,
517 params, suwcnt, tdscnt,
518 tpscnt, mdrcnt, mprcnt);
519 return;
520 }
521
522 if (setup)
523 DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n",
524 (int)setup[0],(int)setup[1]));
525
526 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
527 return;
528 }
529
530 static void handle_trans(connection_struct *conn, struct smb_request *req,
531 struct trans_state *state)
532 {
533 char *local_machine_name;
534 int name_offset = 0;
535
536 DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
537 state->name,(unsigned int)state->total_data,(unsigned int)state->total_param,
538 (unsigned int)state->setup_count));
539
540 /*
541 * WinCE wierdness....
542 */
543
544 local_machine_name = talloc_asprintf(state, "\\%s\\",
545 get_local_machine_name());
546
547 if (local_machine_name == NULL) {
548 reply_nterror(req, NT_STATUS_NO_MEMORY);
549 return;
550 }
551
552 if (strnequal(state->name, local_machine_name,
553 strlen(local_machine_name))) {
554 name_offset = strlen(local_machine_name)-1;
555 }
556
557 if (!strnequal(&state->name[name_offset], "\\PIPE",
558 strlen("\\PIPE"))) {
559 reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
560 return;
561 }
562
563 name_offset += strlen("\\PIPE");
564
565 /* Win9x weirdness. When talking to a unicode server Win9x
566 only sends \PIPE instead of \PIPE\ */
567
568 if (state->name[name_offset] == '\\')
569 name_offset++;
570
571 DEBUG(5,("calling named_pipe\n"));
572 named_pipe(conn, state->vuid, req,
573 state->name+name_offset,
574 state->setup,state->data,
575 state->param,
576 state->setup_count,state->total_data,
577 state->total_param,
578 state->max_setup_return,
579 state->max_data_return,
580 state->max_param_return);
581
582 if (state->close_on_completion) {
583 close_cnum(conn,state->vuid);
584 req->conn = NULL;
585 }
586
587 return;
588 }
589
590 /****************************************************************************
591 Reply to a SMBtrans.
592 ****************************************************************************/
593
594 void reply_trans(struct smb_request *req)
595 {
596 connection_struct *conn = req->conn;
597 unsigned int dsoff;
598 unsigned int dscnt;
599 unsigned int psoff;
600 unsigned int pscnt;
601 struct trans_state *state;
602 NTSTATUS result;
603
604 START_PROFILE(SMBtrans);
605
606 if (req->wct < 14) {
607 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
608 END_PROFILE(SMBtrans);
609 return;
610 }
611
612 dsoff = SVAL(req->vwv+12, 0);
613 dscnt = SVAL(req->vwv+11, 0);
614 psoff = SVAL(req->vwv+10, 0);
615 pscnt = SVAL(req->vwv+9, 0);
616
617 result = allow_new_trans(conn->pending_trans, req->mid);
618 if (!NT_STATUS_IS_OK(result)) {
619 DEBUG(2, ("Got invalid trans request: %s\n",
620 nt_errstr(result)));
621 reply_nterror(req, result);
622 END_PROFILE(SMBtrans);
623 return;
624 }
625
626 if ((state = TALLOC_P(conn, struct trans_state)) == NULL) {
627 DEBUG(0, ("talloc failed\n"));
628 reply_nterror(req, NT_STATUS_NO_MEMORY);
629 END_PROFILE(SMBtrans);
630 return;
631 }
632
633 state->cmd = SMBtrans;
634
635 state->mid = req->mid;
636 state->vuid = req->vuid;
637 state->setup_count = CVAL(req->vwv+13, 0);
638 state->setup = NULL;
639 state->total_param = SVAL(req->vwv+0, 0);
640 state->param = NULL;
641 state->total_data = SVAL(req->vwv+1, 0);
642 state->data = NULL;
643 state->max_param_return = SVAL(req->vwv+2, 0);
644 state->max_data_return = SVAL(req->vwv+3, 0);
645 state->max_setup_return = CVAL(req->vwv+4, 0);
646 state->close_on_completion = BITSETW(req->vwv+5, 0);
647 state->one_way = BITSETW(req->vwv+5, 1);
648
649 srvstr_pull_req_talloc(state, req, &state->name, req->buf,
650 STR_TERMINATE);
651
652 if ((dscnt > state->total_data) || (pscnt > state->total_param) ||
653 !state->name)
654 goto bad_param;
655
656 if (state->total_data) {
657
658 if (trans_oob(state->total_data, 0, dscnt)
659 || trans_oob(smb_len(req->inbuf), dsoff, dscnt)) {
660 goto bad_param;
661 }
662
663 /* Can't use talloc here, the core routines do realloc on the
664 * params and data. Out of paranoia, 100 bytes too many. */
665 state->data = (char *)SMB_MALLOC(state->total_data+100);
666 if (state->data == NULL) {
667 DEBUG(0,("reply_trans: data malloc fail for %u "
668 "bytes !\n", (unsigned int)state->total_data));
669 TALLOC_FREE(state);
670 reply_nterror(req, NT_STATUS_NO_MEMORY);
671 END_PROFILE(SMBtrans);
672 return;
673 }
674 /* null-terminate the slack space */
675 memset(&state->data[state->total_data], 0, 100);
676
677 memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
678 }
679
680 if (state->total_param) {
681
682 if (trans_oob(state->total_param, 0, pscnt)
683 || trans_oob(smb_len(req->inbuf), psoff, pscnt)) {
684 goto bad_param;
685 }
686
687 /* Can't use talloc here, the core routines do realloc on the
688 * params and data. Out of paranoia, 100 bytes too many */
689 state->param = (char *)SMB_MALLOC(state->total_param+100);
690 if (state->param == NULL) {
691 DEBUG(0,("reply_trans: param malloc fail for %u "
692 "bytes !\n", (unsigned int)state->total_param));
693 SAFE_FREE(state->data);
694 TALLOC_FREE(state);
695 reply_nterror(req, NT_STATUS_NO_MEMORY);
696 END_PROFILE(SMBtrans);
697 return;
698 }
699 /* null-terminate the slack space */
700 memset(&state->param[state->total_param], 0, 100);
701
702 memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
703 }
704
705 state->received_data = dscnt;
706 state->received_param = pscnt;
707
708 if (state->setup_count) {
709 unsigned int i;
710
711 /*
712 * No overflow possible here, state->setup_count is an
713 * unsigned int, being filled by a single byte from
714 * CVAL(req->vwv+13, 0) above. The cast in the comparison
715 * below is not necessary, it's here to clarify things. The
716 * validity of req->vwv and req->wct has been checked in
717 * init_smb_request already.
718 */
719 if (state->setup_count + 14 > (unsigned int)req->wct) {
720 goto bad_param;
721 }
722
723 if((state->setup = TALLOC_ARRAY(
724 state, uint16, state->setup_count)) == NULL) {
725 DEBUG(0,("reply_trans: setup malloc fail for %u "
726 "bytes !\n", (unsigned int)
727 (state->setup_count * sizeof(uint16))));
728 SAFE_FREE(state->data);
729 SAFE_FREE(state->param);
730 TALLOC_FREE(state);
731 reply_nterror(req, NT_STATUS_NO_MEMORY);
732 END_PROFILE(SMBtrans);
733 return;
734 }
735
736 for (i=0;i<state->setup_count;i++) {
737 state->setup[i] = SVAL(req->vwv + 14 + i, 0);
738 }
739 }
740
741 state->received_param = pscnt;
742
743 if ((state->received_param != state->total_param) ||
744 (state->received_data != state->total_data)) {
745 DLIST_ADD(conn->pending_trans, state);
746
747 /* We need to send an interim response then receive the rest
748 of the parameter/data bytes */
749 reply_outbuf(req, 0, 0);
750 show_msg((char *)req->outbuf);
751 END_PROFILE(SMBtrans);
752 return;
753 }
754
755 handle_trans(conn, req, state);
756
757 SAFE_FREE(state->data);
758 SAFE_FREE(state->param);
759 TALLOC_FREE(state);
760
761 END_PROFILE(SMBtrans);
762 return;
763
764 bad_param:
765
766 DEBUG(0,("reply_trans: invalid trans parameters\n"));
767 SAFE_FREE(state->data);
768 SAFE_FREE(state->param);
769 TALLOC_FREE(state);
770 END_PROFILE(SMBtrans);
771 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
772 return;
773 }
774
775 /****************************************************************************
776 Reply to a secondary SMBtrans.
777 ****************************************************************************/
778
779 void reply_transs(struct smb_request *req)
780 {
781 connection_struct *conn = req->conn;
782 unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
783 struct trans_state *state;
784
785 START_PROFILE(SMBtranss);
786
787 show_msg((char *)req->inbuf);
788
789 if (req->wct < 8) {
790 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
791 END_PROFILE(SMBtranss);
792 return;
793 }
794
795 for (state = conn->pending_trans; state != NULL;
796 state = state->next) {
797 if (state->mid == req->mid) {
798 break;
799 }
800 }
801
802 if ((state == NULL) || (state->cmd != SMBtrans)) {
803 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
804 END_PROFILE(SMBtranss);
805 return;
806 }
807
808 /* Revise total_params and total_data in case they have changed
809 * downwards */
810
811 if (SVAL(req->vwv+0, 0) < state->total_param)
812 state->total_param = SVAL(req->vwv+0, 0);
813 if (SVAL(req->vwv+1, 0) < state->total_data)
814 state->total_data = SVAL(req->vwv+1, 0);
815
816 pcnt = SVAL(req->vwv+2, 0);
817 poff = SVAL(req->vwv+3, 0);
818 pdisp = SVAL(req->vwv+4, 0);
819
820 dcnt = SVAL(req->vwv+5, 0);
821 doff = SVAL(req->vwv+6, 0);
822 ddisp = SVAL(req->vwv+7, 0);
823
824 state->received_param += pcnt;
825 state->received_data += dcnt;
826
827 if ((state->received_data > state->total_data) ||
828 (state->received_param > state->total_param))
829 goto bad_param;
830
831 if (pcnt) {
832 if (trans_oob(state->total_param, pdisp, pcnt)
833 || trans_oob(smb_len(req->inbuf), poff, pcnt)) {
834 goto bad_param;
835 }
836 memcpy(state->param+pdisp,smb_base(req->inbuf)+poff,pcnt);
837 }
838
839 if (dcnt) {
840 if (trans_oob(state->total_data, ddisp, dcnt)
841 || trans_oob(smb_len(req->inbuf), doff, dcnt)) {
842 goto bad_param;
843 }
844 memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
845 }
846
847 if ((state->received_param < state->total_param) ||
848 (state->received_data < state->total_data)) {
849 END_PROFILE(SMBtranss);
850 return;
851 }
852
853 handle_trans(conn, req, state);
854
855 DLIST_REMOVE(conn->pending_trans, state);
856 SAFE_FREE(state->data);
857 SAFE_FREE(state->param);
858 TALLOC_FREE(state);
859
860 END_PROFILE(SMBtranss);
861 return;
862
863 bad_param:
864
865 DEBUG(0,("reply_transs: invalid trans parameters\n"));
866 DLIST_REMOVE(conn->pending_trans, state);
867 SAFE_FREE(state->data);
868 SAFE_FREE(state->param);
869 TALLOC_FREE(state);
870 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
871 END_PROFILE(SMBtranss);
872 return;
873 }
WIP