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/*
* Unix SMB/Netbios implementation.
* Version 1.9.
* RPC Pipe client / server 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.
*/
#include "includes.h"
#include "nterr.h"
extern int DEBUGLEVEL;
/*******************************************************************
entry point from msrpc to smb. adds data received to pdu; checks
pdu; hands pdu off to msrpc, which gets a pdu back (except in the
case of the RPC_BINDCONT pdu).
********************************************************************/
BOOL readwrite_pipe(pipes_struct *p, char *data, int len,
char **rdata, int *rlen,
BOOL *pipe_outstanding)
{
fd_set fds;
int selrtn;
struct timeval timeout;
DEBUG(10,("rpc_to_smb_readwrite: len %d\n", len));
if (write(p->m->fd, data, len) != len)
{
return False;
}
if ((*rlen) == 0)
{
return False;
}
(*rdata) = (char*)Realloc((*rdata), (*rlen));
if ((*rdata) == NULL)
{
return False;
}
/* compromise. MUST read a minimum of an rpc header.
* timeout waiting for the rest for 10 seconds */
(*rlen) = read_with_timeout(p->m->fd, (*rdata), 16,(*rlen), 10000);
if ((*rlen) < 0)
{
return False;
}
(*rdata) = (char*)Realloc((*rdata), (*rlen));
if ((*rdata) == NULL)
{
return False;
}
/* now check whether there is outstanding data on the pipe.
* this is needed to as to report a STATUS message back to
* the NT client. yes, NT clients fail to operate if you
* don't set a STATUS_BUFFER_OVERFLOW warning on the SMBtrans
* response. *dur*! what's msrpc got to do with smb, ANYWAY!!
*/
FD_ZERO(&fds);
FD_SET(p->m->fd,&fds);
/* Set initial timeout to zero */
timeout.tv_sec = 0;
timeout.tv_usec = 0;
selrtn = sys_select(p->m->fd+1,&fds,NULL, &timeout);
/* Check if error */
if (selrtn == -1)
{
/* something is wrong. Maybe the socket is dead? */
return -1;
}
*pipe_outstanding = FD_ISSET(p->m->fd, &fds);
return True;
}
/****************************************************************************
writes data to a pipe.
****************************************************************************/
ssize_t write_pipe(pipes_struct *p, char *data, size_t n)
{
DEBUG(6,("write_pipe: %x", p->pnum));
DEBUG(6,("name: %s len: %d", p->name, n));
dump_data(50, data, n);
return write(p->m->fd, data, n);
}
/****************************************************************************
reads data from a pipe.
headers are interspersed with the data at regular intervals. by the time
this function is called, the start of the data could possibly have been
read by an SMBtrans (file_offset != 0).
****************************************************************************/
int read_pipe(pipes_struct *p, char *data, int n)
{
DEBUG(6,("read_pipe: %x name: %s len: %d", p->pnum, p->name, n));
if (!p)
{
DEBUG(6,("pipe not open\n"));
return -1;
}
/* read a minimum of 1 byte! :-) */
return read_with_timeout(p->m->fd, data, 1, n, 10000);
}
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