2 Unix SMB/CIFS implementation.
3 Inter-process communication and named pipe handling
4 Copyright (C) Andrew Tridgell 1992-1998
7 Copyright (C) John H Terpstra 1995-1998
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.
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.
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/>.
23 This file handles the named pipe and mailslot calls
24 in the SMBtrans protocol
31 #define NERR_notsupported 50
33 extern int smb_read_error;
35 /*******************************************************************
36 copies parameters and data, as needed, into the smb buffer
38 *both* the data and params sections should be aligned. this
39 is fudged in the rpc pipes by
40 at present, only the data section is. this may be a possible
41 cause of some of the ipc problems being experienced. lkcl26dec97
43 ******************************************************************/
45 static void copy_trans_params_and_data(char *outbuf, int align,
46 char *rparam, int param_offset, int param_len,
47 char *rdata, int data_offset, int data_len)
49 char *copy_into = smb_buf(outbuf)+1;
57 DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d]\n",
58 param_offset, param_offset + param_len,
59 data_offset , data_offset + data_len));
62 memcpy(copy_into, &rparam[param_offset], param_len);
64 copy_into += param_len + align;
67 memcpy(copy_into, &rdata[data_offset], data_len);
70 /****************************************************************************
72 ****************************************************************************/
74 void send_trans_reply(const char *inbuf,
80 BOOL buffer_too_large)
82 int this_ldata,this_lparam;
83 int tot_data_sent = 0;
84 int tot_param_sent = 0;
87 int ldata = rdata ? rdata_len : 0;
88 int lparam = rparam ? rparam_len : 0;
91 DEBUG(5,("send_trans_reply: buffer %d too large\n", ldata ));
93 this_lparam = MIN(lparam,max_send - 500); /* hack */
94 this_ldata = MIN(ldata,max_send - (500+this_lparam));
96 align = ((this_lparam)%4);
98 if (buffer_too_large) {
99 ERROR_BOTH(STATUS_BUFFER_OVERFLOW,ERRDOS,ERRmoredata);
102 set_message(inbuf,outbuf,10,1+align+this_ldata+this_lparam,True);
104 copy_trans_params_and_data(outbuf, align,
105 rparam, tot_param_sent, this_lparam,
106 rdata, tot_data_sent, this_ldata);
108 SSVAL(outbuf,smb_vwv0,lparam);
109 SSVAL(outbuf,smb_vwv1,ldata);
110 SSVAL(outbuf,smb_vwv3,this_lparam);
111 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
112 SSVAL(outbuf,smb_vwv5,0);
113 SSVAL(outbuf,smb_vwv6,this_ldata);
114 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
115 SSVAL(outbuf,smb_vwv8,0);
116 SSVAL(outbuf,smb_vwv9,0);
119 if (!send_smb(smbd_server_fd(),outbuf))
120 exit_server_cleanly("send_trans_reply: send_smb failed.");
122 tot_data_sent = this_ldata;
123 tot_param_sent = this_lparam;
125 while (tot_data_sent < ldata || tot_param_sent < lparam)
127 this_lparam = MIN(lparam-tot_param_sent, max_send - 500); /* hack */
128 this_ldata = MIN(ldata -tot_data_sent, max_send - (500+this_lparam));
136 align = (this_lparam%4);
138 set_message(inbuf,outbuf,10,1+this_ldata+this_lparam+align,False);
140 copy_trans_params_and_data(outbuf, align,
141 rparam, tot_param_sent, this_lparam,
142 rdata, tot_data_sent, this_ldata);
144 SSVAL(outbuf,smb_vwv3,this_lparam);
145 SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
146 SSVAL(outbuf,smb_vwv5,tot_param_sent);
147 SSVAL(outbuf,smb_vwv6,this_ldata);
148 SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,outbuf));
149 SSVAL(outbuf,smb_vwv8,tot_data_sent);
150 SSVAL(outbuf,smb_vwv9,0);
153 if (!send_smb(smbd_server_fd(),outbuf))
154 exit_server_cleanly("send_trans_reply: send_smb failed.");
156 tot_data_sent += this_ldata;
157 tot_param_sent += this_lparam;
161 /****************************************************************************
162 Start the first part of an RPC reply which began with an SMBtrans request.
163 ****************************************************************************/
165 static BOOL api_rpc_trans_reply(const char *inbuf,
169 BOOL is_data_outstanding;
170 char *rdata = (char *)SMB_MALLOC(p->max_trans_reply);
174 DEBUG(0,("api_rpc_trans_reply: malloc fail.\n"));
178 if((data_len = read_from_pipe( p, rdata, p->max_trans_reply,
179 &is_data_outstanding)) < 0) {
184 send_trans_reply(inbuf, outbuf, NULL, 0, rdata, data_len, is_data_outstanding);
190 /****************************************************************************
191 WaitNamedPipeHandleState
192 ****************************************************************************/
194 static BOOL api_WNPHS(const char *inbuf,
202 if (!param || param_len < 2)
205 priority = SVAL(param,0);
206 DEBUG(4,("WaitNamedPipeHandleState priority %x\n", priority));
208 if (wait_rpc_pipe_hnd_state(p, priority)) {
209 /* now send the reply */
210 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
217 /****************************************************************************
218 SetNamedPipeHandleState
219 ****************************************************************************/
221 static BOOL api_SNPHS(const char *inbuf,
229 if (!param || param_len < 2)
233 DEBUG(4,("SetNamedPipeHandleState to code %x\n", id));
235 if (set_rpc_pipe_hnd_state(p, id)) {
236 /* now send the reply */
237 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
244 /****************************************************************************
245 When no reply is generated, indicate unsupported.
246 ****************************************************************************/
248 static BOOL api_no_reply(const char *inbuf, char *outbuf, int max_rdata_len)
253 SSVAL(rparam,0,NERR_notsupported);
254 SSVAL(rparam,2,0); /* converter word */
256 DEBUG(3,("Unsupported API fd command\n"));
258 /* now send the reply */
259 send_trans_reply(inbuf, outbuf, rparam, 4, NULL, 0, False);
264 /****************************************************************************
265 Handle remote api calls delivered to a named pipe already opened.
266 ****************************************************************************/
268 static int api_fd_reply(connection_struct *conn,
282 smb_np_struct *p = NULL;
286 DEBUG(5,("api_fd_reply\n"));
288 /* First find out the name of this file. */
290 DEBUG(0,("Unexpected named pipe transaction.\n"));
291 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
294 /* Get the file handle and hence the file name. */
296 * NB. The setup array has already been transformed
297 * via SVAL and so is in gost byte order.
299 pnum = ((int)setup[1]) & 0xFFFF;
300 subcommand = ((int)setup[0]) & 0xFFFF;
302 if(!(p = get_rpc_pipe(pnum))) {
303 if (subcommand == TRANSACT_WAITNAMEDPIPEHANDLESTATE) {
304 /* Win9x does this call with a unicode pipe name, not a pnum. */
305 /* Just return success for now... */
306 DEBUG(3,("Got TRANSACT_WAITNAMEDPIPEHANDLESTATE on text pipe name\n"));
307 send_trans_reply(inbuf, outbuf, NULL, 0, NULL, 0, False);
311 DEBUG(1,("api_fd_reply: INVALID PIPE HANDLE: %x\n", pnum));
312 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
315 if (vuid != p->vuid) {
316 DEBUG(1, ("Got pipe request (pnum %x) using invalid VUID %d, "
317 "expected %d\n", pnum, vuid, p->vuid));
318 return ERROR_NT(NT_STATUS_INVALID_HANDLE);
321 DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n", subcommand, p->name, pnum));
323 /* record maximum data length that can be transmitted in an SMBtrans */
324 p->max_trans_reply = mdrcnt;
326 DEBUG(10,("api_fd_reply: p:%p max_trans_reply: %d\n", p, p->max_trans_reply));
328 switch (subcommand) {
329 case TRANSACT_DCERPCCMD:
330 /* dce/rpc command */
331 reply = write_to_pipe(p, data, tdscnt);
333 reply = api_rpc_trans_reply(inbuf, outbuf, p);
335 case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
336 /* Wait Named Pipe Handle state */
337 reply = api_WNPHS(inbuf, outbuf, p, params, tpscnt);
339 case TRANSACT_SETNAMEDPIPEHANDLESTATE:
340 /* Set Named Pipe Handle state */
341 reply = api_SNPHS(inbuf, outbuf, p, params, tpscnt);
344 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
348 return api_no_reply(inbuf, outbuf, mdrcnt);
353 /****************************************************************************
354 Handle named pipe commands.
355 ****************************************************************************/
357 static int named_pipe(connection_struct *conn,
372 DEBUG(3,("named pipe command on <%s> name\n", name));
374 if (strequal(name,"LANMAN")) {
375 return api_reply(conn,
387 if (strequal(name,"WKSSVC") ||
388 strequal(name,"SRVSVC") ||
389 strequal(name,"WINREG") ||
390 strequal(name,"SAMR") ||
391 strequal(name,"LSARPC")) {
392 DEBUG(4,("named pipe command from Win95 (wow!)\n"));
393 return api_fd_reply(conn,
407 if (strlen(name) < 1) {
408 return api_fd_reply(conn,
423 DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n", (int)setup[0],(int)setup[1]));
428 static NTSTATUS handle_trans(connection_struct *conn,
429 struct trans_state *state,
434 char *local_machine_name;
437 DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
438 state->name,(unsigned int)state->total_data,(unsigned int)state->total_param,
439 (unsigned int)state->setup_count));
442 * WinCE wierdness....
445 local_machine_name = talloc_asprintf(state, "\\%s\\",
446 get_local_machine_name());
448 if (local_machine_name == NULL) {
449 return NT_STATUS_NO_MEMORY;
452 if (strnequal(state->name, local_machine_name,
453 strlen(local_machine_name))) {
454 name_offset = strlen(local_machine_name)-1;
457 if (!strnequal(&state->name[name_offset], "\\PIPE",
459 return NT_STATUS_NOT_SUPPORTED;
462 name_offset += strlen("\\PIPE");
464 /* Win9x weirdness. When talking to a unicode server Win9x
465 only sends \PIPE instead of \PIPE\ */
467 if (state->name[name_offset] == '\\')
470 DEBUG(5,("calling named_pipe\n"));
471 *outsize = named_pipe(conn,
475 state->name+name_offset,
476 state->setup,state->data,
478 state->setup_count,state->total_data,
480 state->max_setup_return,
481 state->max_data_return,
482 state->max_param_return);
485 return NT_STATUS_NOT_SUPPORTED;
488 if (state->close_on_completion)
489 close_cnum(conn,state->vuid);
494 /****************************************************************************
496 ****************************************************************************/
498 int reply_trans(connection_struct *conn,
505 unsigned int dsoff = SVAL(inbuf, smb_dsoff);
506 unsigned int dscnt = SVAL(inbuf, smb_dscnt);
507 unsigned int psoff = SVAL(inbuf, smb_psoff);
508 unsigned int pscnt = SVAL(inbuf, smb_pscnt);
509 struct trans_state *state;
512 START_PROFILE(SMBtrans);
514 result = allow_new_trans(conn->pending_trans, SVAL(inbuf, smb_mid));
515 if (!NT_STATUS_IS_OK(result)) {
516 DEBUG(2, ("Got invalid trans request: %s\n",
518 END_PROFILE(SMBtrans);
519 return ERROR_NT(result);
522 if ((state = TALLOC_P(conn->mem_ctx, struct trans_state)) == NULL) {
523 DEBUG(0, ("talloc failed\n"));
524 END_PROFILE(SMBtrans);
525 return ERROR_NT(NT_STATUS_NO_MEMORY);
528 state->cmd = SMBtrans;
530 state->mid = SVAL(inbuf, smb_mid);
531 state->vuid = SVAL(inbuf, smb_uid);
532 state->setup_count = CVAL(inbuf, smb_suwcnt);
534 state->total_param = SVAL(inbuf, smb_tpscnt);
536 state->total_data = SVAL(inbuf, smb_tdscnt);
538 state->max_param_return = SVAL(inbuf, smb_mprcnt);
539 state->max_data_return = SVAL(inbuf, smb_mdrcnt);
540 state->max_setup_return = CVAL(inbuf, smb_msrcnt);
541 state->close_on_completion = BITSETW(inbuf+smb_vwv5,0);
542 state->one_way = BITSETW(inbuf+smb_vwv5,1);
544 memset(state->name, '\0',sizeof(state->name));
545 srvstr_pull_buf(inbuf, SVAL(inbuf, smb_flg2), state->name,
546 smb_buf(inbuf), sizeof(state->name), STR_TERMINATE);
548 if ((dscnt > state->total_data) || (pscnt > state->total_param))
551 if (state->total_data) {
552 /* Can't use talloc here, the core routines do realloc on the
553 * params and data. Out of paranoia, 100 bytes too many. */
554 state->data = (char *)SMB_MALLOC(state->total_data+100);
555 if (state->data == NULL) {
556 DEBUG(0,("reply_trans: data malloc fail for %u "
557 "bytes !\n", (unsigned int)state->total_data));
559 END_PROFILE(SMBtrans);
560 return(ERROR_DOS(ERRDOS,ERRnomem));
562 /* null-terminate the slack space */
563 memset(&state->data[state->total_data], 0, 100);
564 if ((dsoff+dscnt < dsoff) || (dsoff+dscnt < dscnt))
566 if ((smb_base(inbuf)+dsoff+dscnt > inbuf + size) ||
567 (smb_base(inbuf)+dsoff+dscnt < smb_base(inbuf)))
570 memcpy(state->data,smb_base(inbuf)+dsoff,dscnt);
573 if (state->total_param) {
574 /* Can't use talloc here, the core routines do realloc on the
575 * params and data. Out of paranoia, 100 bytes too many */
576 state->param = (char *)SMB_MALLOC(state->total_param+100);
577 if (state->param == NULL) {
578 DEBUG(0,("reply_trans: param malloc fail for %u "
579 "bytes !\n", (unsigned int)state->total_param));
580 SAFE_FREE(state->data);
582 END_PROFILE(SMBtrans);
583 return(ERROR_DOS(ERRDOS,ERRnomem));
585 /* null-terminate the slack space */
586 memset(&state->param[state->total_param], 0, 100);
587 if ((psoff+pscnt < psoff) || (psoff+pscnt < pscnt))
589 if ((smb_base(inbuf)+psoff+pscnt > inbuf + size) ||
590 (smb_base(inbuf)+psoff+pscnt < smb_base(inbuf)))
593 memcpy(state->param,smb_base(inbuf)+psoff,pscnt);
596 state->received_data = dscnt;
597 state->received_param = pscnt;
599 if (state->setup_count) {
601 if((state->setup = TALLOC_ARRAY(
602 state, uint16, state->setup_count)) == NULL) {
603 DEBUG(0,("reply_trans: setup malloc fail for %u "
604 "bytes !\n", (unsigned int)
605 (state->setup_count * sizeof(uint16))));
607 END_PROFILE(SMBtrans);
608 return(ERROR_DOS(ERRDOS,ERRnomem));
610 if (inbuf+smb_vwv14+(state->setup_count*SIZEOFWORD) >
613 if ((smb_vwv14+(state->setup_count*SIZEOFWORD) < smb_vwv14) ||
614 (smb_vwv14+(state->setup_count*SIZEOFWORD) <
615 (state->setup_count*SIZEOFWORD)))
618 for (i=0;i<state->setup_count;i++)
619 state->setup[i] = SVAL(inbuf,smb_vwv14+i*SIZEOFWORD);
622 state->received_param = pscnt;
624 if ((state->received_param == state->total_param) &&
625 (state->received_data == state->total_data)) {
627 result = handle_trans(conn, state, inbuf, outbuf, &outsize);
629 SAFE_FREE(state->data);
630 SAFE_FREE(state->param);
633 if (!NT_STATUS_IS_OK(result)) {
634 END_PROFILE(SMBtrans);
635 return ERROR_NT(result);
639 END_PROFILE(SMBtrans);
640 return ERROR_NT(NT_STATUS_INTERNAL_ERROR);
643 END_PROFILE(SMBtrans);
647 DLIST_ADD(conn->pending_trans, state);
649 /* We need to send an interim response then receive the rest
650 of the parameter/data bytes */
651 outsize = set_message(inbuf,outbuf,0,0,True);
653 END_PROFILE(SMBtrans);
658 DEBUG(0,("reply_trans: invalid trans parameters\n"));
659 SAFE_FREE(state->data);
660 SAFE_FREE(state->param);
662 END_PROFILE(SMBtrans);
663 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
666 /****************************************************************************
667 Reply to a secondary SMBtrans.
668 ****************************************************************************/
670 int reply_transs(connection_struct *conn, char *inbuf,char *outbuf,
671 int size, int bufsize)
674 unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
675 struct trans_state *state;
678 START_PROFILE(SMBtranss);
682 for (state = conn->pending_trans; state != NULL;
683 state = state->next) {
684 if (state->mid == SVAL(inbuf,smb_mid)) {
689 if ((state == NULL) || (state->cmd != SMBtrans)) {
690 END_PROFILE(SMBtranss);
691 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
694 /* Revise total_params and total_data in case they have changed
697 if (SVAL(inbuf, smb_vwv0) < state->total_param)
698 state->total_param = SVAL(inbuf,smb_vwv0);
699 if (SVAL(inbuf, smb_vwv1) < state->total_data)
700 state->total_data = SVAL(inbuf,smb_vwv1);
702 pcnt = SVAL(inbuf, smb_spscnt);
703 poff = SVAL(inbuf, smb_spsoff);
704 pdisp = SVAL(inbuf, smb_spsdisp);
706 dcnt = SVAL(inbuf, smb_sdscnt);
707 doff = SVAL(inbuf, smb_sdsoff);
708 ddisp = SVAL(inbuf, smb_sdsdisp);
710 state->received_param += pcnt;
711 state->received_data += dcnt;
713 if ((state->received_data > state->total_data) ||
714 (state->received_param > state->total_param))
718 if (pdisp+pcnt > state->total_param)
720 if ((pdisp+pcnt < pdisp) || (pdisp+pcnt < pcnt))
722 if (pdisp > state->total_param)
724 if ((smb_base(inbuf) + poff + pcnt > inbuf + size) ||
725 (smb_base(inbuf) + poff + pcnt < smb_base(inbuf)))
727 if (state->param + pdisp < state->param)
730 memcpy(state->param+pdisp,smb_base(inbuf)+poff,
735 if (ddisp+dcnt > state->total_data)
737 if ((ddisp+dcnt < ddisp) || (ddisp+dcnt < dcnt))
739 if (ddisp > state->total_data)
741 if ((smb_base(inbuf) + doff + dcnt > inbuf + size) ||
742 (smb_base(inbuf) + doff + dcnt < smb_base(inbuf)))
744 if (state->data + ddisp < state->data)
747 memcpy(state->data+ddisp, smb_base(inbuf)+doff,
751 if ((state->received_param < state->total_param) ||
752 (state->received_data < state->total_data)) {
753 END_PROFILE(SMBtranss);
757 /* construct_reply_common has done us the favor to pre-fill the
758 * command field with SMBtranss which is wrong :-)
760 SCVAL(outbuf,smb_com,SMBtrans);
762 result = handle_trans(conn, state, inbuf, outbuf, &outsize);
764 DLIST_REMOVE(conn->pending_trans, state);
765 SAFE_FREE(state->data);
766 SAFE_FREE(state->param);
769 if ((outsize == 0) || !NT_STATUS_IS_OK(result)) {
770 END_PROFILE(SMBtranss);
771 return(ERROR_DOS(ERRSRV,ERRnosupport));
774 END_PROFILE(SMBtranss);
779 DEBUG(0,("reply_transs: invalid trans parameters\n"));
780 DLIST_REMOVE(conn->pending_trans, state);
781 SAFE_FREE(state->data);
782 SAFE_FREE(state->param);
784 END_PROFILE(SMBtranss);
785 return ERROR_NT(NT_STATUS_INVALID_PARAMETER);