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/*
Unix SMB/Netbios implementation.
Version 1.9.
Pipe SMB reply routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Luke Kenneth Casson Leighton 1996-1998
Copyright (C) Paul Ashton 1997-1998.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
This file handles reply_ calls on named pipes that the server
makes to handle specific protocols
*/
#include "includes.h"
#include "trans2.h"
#define PIPE "\\PIPE\\"
#define PIPELEN strlen(PIPE)
#define REALLOC(ptr,size) Realloc(ptr,MAX((size),4*1024))
/* look in server.c for some explanation of these variables */
extern int Protocol;
extern int DEBUGLEVEL;
extern char magic_char;
extern BOOL case_sensitive;
extern pstring sesssetup_user;
extern int Client;
#define VALID_PNUM(pnum) (((pnum) >= 0) && ((pnum) < MAX_OPEN_PIPES))
#define OPEN_PNUM(pnum) (VALID_PNUM(pnum) && Pipes[pnum].open)
#define PNUM_OK(pnum,c) (OPEN_PNUM(pnum) && (c)==Pipes[pnum].cnum)
/* this macro should always be used to extract an pnum (smb_fid) from
a packet to ensure chaining works correctly */
#define GETPNUM(buf,where) (chain_pnum!= -1?chain_pnum:SVAL(buf,where))
extern struct pipe_id_info pipe_names[];
/****************************************************************************
reply to an open and X on a named pipe
This code is basically stolen from reply_open_and_X with some
wrinkles to handle pipes.
****************************************************************************/
int reply_open_pipe_and_X(char *inbuf,char *outbuf,int length,int bufsize)
{
pstring fname;
uint16 cnum = SVAL(inbuf, smb_tid);
uint16 vuid = SVAL(inbuf, smb_uid);
int pnum = -1;
int smb_ofun = SVAL(inbuf,smb_vwv8);
int size=0,fmode=0,mtime=0,rmode=0;
int i;
/* XXXX we need to handle passed times, sattr and flags */
pstrcpy(fname,smb_buf(inbuf));
/* If the name doesn't start \PIPE\ then this is directed */
/* at a mailslot or something we really, really don't understand, */
/* not just something we really don't understand. */
if ( strncmp(fname,PIPE,PIPELEN) != 0 )
return(ERROR(ERRSRV,ERRaccess));
DEBUG(4,("Opening pipe %s.\n", fname));
/* See if it is one we want to handle. */
for( i = 0; pipe_names[i].client_pipe ; i++ )
if( strcmp(fname,pipe_names[i].client_pipe) == 0 )
break;
if ( pipe_names[i].client_pipe == NULL )
return(ERROR(ERRSRV,ERRaccess));
/* Strip \PIPE\ off the name. */
pstrcpy(fname,smb_buf(inbuf) + PIPELEN);
/* Known pipes arrive with DIR attribs. Remove it so a regular file */
/* can be opened and add it in after the open. */
DEBUG(3,("Known pipe %s opening.\n",fname));
smb_ofun |= 0x10; /* Add Create it not exists flag */
pnum = open_rpc_pipe_hnd(fname, cnum, vuid);
if (pnum < 0) return(ERROR(ERRSRV,ERRnofids));
/* Prepare the reply */
set_message(outbuf,15,0,True);
/* Mark the opened file as an existing named pipe in message mode. */
SSVAL(outbuf,smb_vwv9,2);
SSVAL(outbuf,smb_vwv10,0xc700);
if (rmode == 2)
{
DEBUG(4,("Resetting open result to open from create.\n"));
rmode = 1;
}
SSVAL(outbuf,smb_vwv2, pnum + 0x800); /* mark file handle up into high range */
SSVAL(outbuf,smb_vwv3,fmode);
put_dos_date3(outbuf,smb_vwv4,mtime);
SIVAL(outbuf,smb_vwv6,size);
SSVAL(outbuf,smb_vwv8,rmode);
SSVAL(outbuf,smb_vwv11,0);
return chain_reply(inbuf,outbuf,length,bufsize);
}
/****************************************************************************
reply to a read and X
This code is basically stolen from reply_read_and_X with some
wrinkles to handle pipes.
****************************************************************************/
int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
{
int pnum = get_rpc_pipe_num(inbuf,smb_vwv2);
uint32 smb_offs = IVAL(inbuf,smb_vwv3);
int smb_maxcnt = SVAL(inbuf,smb_vwv5);
int smb_mincnt = SVAL(inbuf,smb_vwv6);
int cnum;
int nread = -1;
char *data;
BOOL ok = False;
cnum = SVAL(inbuf,smb_tid);
/*
CHECK_FNUM(fnum,cnum);
CHECK_READ(fnum);
CHECK_ERROR(fnum);
*/
set_message(outbuf,12,0,True);
data = smb_buf(outbuf);
nread = read_pipe(pnum, data, smb_offs, smb_maxcnt);
ok = True;
if (nread < 0)
return(UNIXERROR(ERRDOS,ERRnoaccess));
SSVAL(outbuf,smb_vwv5,nread);
SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
SSVAL(smb_buf(outbuf),-2,nread);
DEBUG(3,("%s readX pnum=%04x cnum=%d min=%d max=%d nread=%d\n",
timestring(),pnum,cnum,
smb_mincnt,smb_maxcnt,nread));
set_chain_pnum(pnum);
return chain_reply(inbuf,outbuf,length,bufsize);
}
/****************************************************************************
reply to a close
****************************************************************************/
int reply_pipe_close(char *inbuf,char *outbuf)
{
int pnum = get_rpc_pipe_num(inbuf,smb_vwv0);
int cnum = SVAL(inbuf,smb_tid);
int outsize = set_message(outbuf,0,0,True);
DEBUG(5,("reply_pipe_close: pnum:%x cnum:%x\n", pnum, cnum));
if (!close_rpc_pipe_hnd(pnum, cnum)) return(ERROR(ERRDOS,ERRbadfid));
return(outsize);
}
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