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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)
extern int DEBUGLEVEL;
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(connection_struct *conn,
char *inbuf,char *outbuf,int length,int bufsize)
{
pstring fname;
uint16 vuid = SVAL(inbuf, smb_uid);
pipes_struct *p;
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( strequal(fname,pipe_names[i].client_pipe) )
break;
if (pipe_names[i].client_pipe == NULL)
return(ERROR(ERRSRV,ERRaccess));
/* Strip \PIPE\ off the name. */
pstrcpy(fname,smb_buf(inbuf) + PIPELEN);
/*
* Hack for NT printers... JRA.
*/
if(should_fail_next_srvsvc_open(fname))
return(ERROR(ERRSRV,ERRaccess));
/* 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 |= FILE_CREATE_IF_NOT_EXIST;
p = open_rpc_pipe_p(fname, conn, vuid);
if (!p) 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, p->pnum);
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_vwv11,0x0001);
return chain_reply(inbuf,outbuf,length,bufsize);
}
/****************************************************************************
reply to a write on a pipe
****************************************************************************/
int reply_pipe_write(char *inbuf,char *outbuf,int length,int dum_bufsize)
{
pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
size_t numtowrite = SVAL(inbuf,smb_vwv1);
int nwritten;
int outsize;
char *data;
if (!p)
return(ERROR(ERRDOS,ERRbadfid));
data = smb_buf(inbuf) + 3;
if (numtowrite == 0)
nwritten = 0;
else
nwritten = write_to_pipe(p, data, numtowrite);
if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
return (UNIXERROR(ERRDOS,ERRnoaccess));
outsize = set_message(outbuf,1,0,True);
SSVAL(outbuf,smb_vwv0,nwritten);
DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n",
p->pnum, nwritten));
return(outsize);
}
/****************************************************************************
reply to a write and X
This code is basically stolen from reply_write_and_X with some
wrinkles to handle pipes.
****************************************************************************/
int reply_pipe_write_and_X(char *inbuf,char *outbuf,int length,int bufsize)
{
pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
size_t numtowrite = SVAL(inbuf,smb_vwv10);
int nwritten = -1;
int smb_doff = SVAL(inbuf, smb_vwv11);
char *data;
if (!p)
return(ERROR(ERRDOS,ERRbadfid));
data = smb_base(inbuf) + smb_doff;
if (numtowrite == 0)
nwritten = 0;
else
nwritten = write_to_pipe(p, data, numtowrite);
if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
return (UNIXERROR(ERRDOS,ERRnoaccess));
set_message(outbuf,6,0,True);
SSVAL(outbuf,smb_vwv2,nwritten);
DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n",
p->pnum, nwritten));
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)
{
pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
int smb_maxcnt = SVAL(inbuf,smb_vwv5);
int smb_mincnt = SVAL(inbuf,smb_vwv6);
int nread = -1;
char *data;
/* we don't use the offset given to use for pipe reads. This
is deliberate, instead we always return the next lump of
data on the pipe */
#if 0
uint32 smb_offs = IVAL(inbuf,smb_vwv3);
#endif
if (!p)
return(ERROR(ERRDOS,ERRbadfid));
set_message(outbuf,12,0,True);
data = smb_buf(outbuf);
nread = read_from_pipe(p, data, smb_maxcnt);
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,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
p->pnum, smb_mincnt, smb_maxcnt, nread));
return chain_reply(inbuf,outbuf,length,bufsize);
}
/****************************************************************************
reply to a close
****************************************************************************/
int reply_pipe_close(connection_struct *conn, char *inbuf,char *outbuf)
{
pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
int outsize = set_message(outbuf,0,0,True);
if (!p)
return(ERROR(ERRDOS,ERRbadfid));
DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
if (!close_rpc_pipe_hnd(p, conn))
return(ERROR(ERRDOS,ERRbadfid));
return(outsize);
}
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