441 lines
8.1 KiB
C
441 lines
8.1 KiB
C
/*
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* io.c
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*
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* Copyright (C) 1994-1997, John Kilburg <john@cs.unlv.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "port_before.h"
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#include <stdio.h>
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#include <time.h>
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#include <errno.h>
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#ifdef __QNX__
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#include <ioctl.h>
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#include <unix.h> /* for O_NDELAY/O_NONBLOCK, gethostname() */
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#define FNDELAY O_NDELAY
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#else
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#ifdef __EMX__
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#define FNDELAY O_NDELAY
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#endif
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#include <fcntl.h>
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#endif
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#if (defined(SYSV) || defined(SVR4)) && (defined(sun) || defined(hpux) || defined(_nec_ews_svr4))
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#include <sys/file.h>
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#endif
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <X11/IntrinsicP.h>
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#include "port_after.h"
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#include "ChimeraP.h"
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#include "ChimeraStream.h"
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struct ChimeraStreamP
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{
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bool destroyed;
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MemPool mp;
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ChimeraResources cres;
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int s;
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int as;
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unsigned long addr;
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int port;
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bool bound;
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bool accepted;
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/* read callback */
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ChimeraStreamCallback rdfunc;
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void *rdclosure;
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byte *rdb;
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size_t rdlen;
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XtInputId rdid;
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/* write callback */
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ChimeraStreamCallback wrfunc;
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void *wrclosure;
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byte *wrb;
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size_t wrmax;
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size_t wri;
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XtInputId wrid;
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};
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static void WriteStreamHandler _ArgProto((XtPointer, int *, XtInputId *));
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static void ReadStreamHandler _ArgProto((XtPointer, int *, XtInputId *));
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/*
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* WriteStreamHandler
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*/
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static void
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WriteStreamHandler(cldata, netfd, xid)
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XtPointer cldata;
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int *netfd;
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XtInputId *xid;
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{
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ChimeraStream ps = (ChimeraStream)cldata;
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ssize_t wlen;
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int s;
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if (ps->bound) s = ps->as;
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else s = ps->s;
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wlen = write(s, ps->wrb + ps->wri, ps->wrmax - ps->wri);
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if (wlen < 0)
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{
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if (errno != EWOULDBLOCK)
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{
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XtRemoveInput(ps->wrid);
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ps->wrid = 0;
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CMethod(ps->wrfunc)(ps, -1, ps->wrclosure);
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}
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}
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else
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{
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ps->wri += wlen;
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if (ps->wri == ps->wrmax)
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{
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XtRemoveInput(ps->wrid);
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ps->wrid = 0;
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CMethod(ps->wrfunc)(ps, 0, ps->wrclosure);
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}
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}
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return;
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}
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/*
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* ReadStreamHandler
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*/
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static void
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ReadStreamHandler(cldata, netfd, xid)
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XtPointer cldata;
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int *netfd;
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XtInputId *xid;
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{
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ChimeraStream ps = (ChimeraStream)cldata;
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ssize_t rlen;
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struct sockaddr addr;
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int s;
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int namlen;
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if (ps->bound)
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{
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if (!ps->accepted)
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{
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namlen = sizeof(addr);
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if ((ps->as = accept(ps->s, &addr, &namlen)) < 0)
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{
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XtRemoveInput(ps->rdid);
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ps->rdid = 0;
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CMethod(ps->rdfunc)(ps, -1, ps->rdclosure);
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}
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ps->accepted = true;
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}
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s = ps->as;
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}
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else s = ps->s;
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rlen = read(s, ps->rdb, ps->rdlen);
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if (rlen < 0)
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{
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if (errno != EWOULDBLOCK)
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{
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XtRemoveInput(ps->rdid);
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ps->rdid = 0;
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CMethod(ps->rdfunc)(ps, rlen, ps->rdclosure);
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}
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}
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else
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{
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XtRemoveInput(ps->rdid);
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ps->rdid = 0;
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CMethod(ps->rdfunc)(ps, rlen, ps->rdclosure);
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}
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return;
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}
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/*
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* StreamRead
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*/
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void
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StreamRead(ps, b, blen, func, closure)
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ChimeraStream ps;
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byte *b;
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size_t blen;
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ChimeraStreamCallback func;
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void *closure;
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{
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int s;
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myassert(!ps->destroyed, "ChimeraStream destroyed");
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if (ps->bound && ps->accepted) s = ps->as;
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else s = ps->s;
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ps->rdb = b;
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ps->rdlen = blen;
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ps->rdfunc = func;
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ps->rdclosure = closure;
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ps->rdid = XtAppAddInput(ps->cres->appcon, s,
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(XtPointer)XtInputReadMask,
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ReadStreamHandler, (XtPointer)ps);
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return;
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}
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/*
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* StreamWrite
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*/
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void
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StreamWrite(ps, b, blen, func, closure)
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ChimeraStream ps;
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byte *b;
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size_t blen;
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ChimeraStreamCallback func;
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void *closure;
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{
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myassert(!ps->destroyed, "ChimeraStream destroyed.");
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ps->wrb = b;
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ps->wri = 0;
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ps->wrmax = blen;
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ps->wrfunc = func;
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ps->wrclosure = closure;
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ps->wrid = XtAppAddInput(ps->cres->appcon,
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ps->s,
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(XtPointer)XtInputWriteMask,
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WriteStreamHandler, (XtPointer)ps);
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return;
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}
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/*
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* StreamCreateINet
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*/
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ChimeraStream
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StreamCreateINet(cres, host, port)
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ChimeraResources cres;
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char *host;
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int port;
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{
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ChimeraStream ps;
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int s;
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int rval;
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struct sockaddr_in addr;
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struct hostent *hp;
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MemPool mp;
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if (host == NULL) return(NULL);
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memset(&addr, 0, sizeof(addr));
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/* fix by Jim Rees so that numeric addresses are dealt with */
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if ((addr.sin_addr.s_addr = inet_addr(host)) == -1)
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{
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if ((hp = (struct hostent *)gethostbyname(host)) == NULL)
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{
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return(NULL);
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}
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memcpy(&(addr.sin_addr), hp->h_addr, hp->h_length);
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}
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addr.sin_family = AF_INET;
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addr.sin_port = htons((unsigned short)port);
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s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (s < 0) return(NULL);
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#ifdef __QNX__
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ioctl(s, FNDELAY, 0);
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#else
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fcntl(s, F_SETFL, FNDELAY);
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#endif
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if ((rval = connect(s, (struct sockaddr *)&addr, sizeof(addr))) != 0)
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{
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if (errno != EINPROGRESS)
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{
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close(s);
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return(NULL);
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}
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}
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mp = MPCreate();
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ps = (ChimeraStream)MPCGet(mp, sizeof(struct ChimeraStreamP));
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ps->mp = mp;
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ps->cres = cres;
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ps->s = s;
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return((ChimeraStream)ps);
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}
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/*
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* StreamCreateINet2
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*/
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ChimeraStream
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StreamCreateINet2(cres)
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ChimeraResources cres;
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{
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MemPool mp;
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ChimeraStream ps;
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int s;
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struct sockaddr_in addr;
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struct sockaddr_in xaddr;
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struct hostent *hp;
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int namlen;
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char host[BUFSIZ];
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s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (s < 0) return(NULL);
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addr.sin_addr.s_addr = INADDR_ANY;
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addr.sin_family = AF_INET;
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addr.sin_port = 0;
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if (bind(s, (struct sockaddr *) &addr, sizeof (addr)) < 0)
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{
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close(s);
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return(NULL);
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}
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if (listen(s, 1) < 0)
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{
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close(s);
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return(NULL);
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}
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if (gethostname(host, sizeof(host) - 1) == 0)
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{
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/* fix by Jim Rees so that numeric addresses are dealt with */
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if ((xaddr.sin_addr.s_addr = inet_addr(host)) == -1)
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{
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if ((hp = (struct hostent *)gethostbyname(host)) == NULL)
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{
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close(s);
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return(NULL);
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}
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memcpy(&(xaddr.sin_addr), hp->h_addr, hp->h_length);
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}
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}
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else
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{
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close(s);
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return(NULL);
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}
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namlen = sizeof(addr);
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if (getsockname(s, (struct sockaddr *)&addr, &namlen) < 0)
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{
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close(s);
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return(NULL);
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}
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#ifdef __QNX__
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ioctl(s, FNDELAY, 0);
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#else
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fcntl(s, F_SETFL, FNDELAY);
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#endif
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mp = MPCreate();
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ps = (ChimeraStream)MPCGet(mp, sizeof(struct ChimeraStreamP));
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ps->mp = mp;
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ps->cres = cres;
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ps->s = s;
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ps->port = (int)addr.sin_port;
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ps->addr = xaddr.sin_addr.s_addr;
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ps->bound = true;
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return((ChimeraStream)ps);
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}
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/*
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* StreamDestroy
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*/
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void
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StreamDestroy(ps)
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ChimeraStream ps;
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{
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myassert(!ps->destroyed, "ChimeraStream destroyed");
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ps->destroyed = true;
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if (ps->rdid != 0) XtRemoveInput(ps->rdid);
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if (ps->wrid != 0) XtRemoveInput(ps->wrid);
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close(ps->s);
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MPDestroy(ps->mp);
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return;
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}
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/*
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* StreamGetINetPort
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*/
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int
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StreamGetINetPort(ps)
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ChimeraStream ps;
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{
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return(ps->port);
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}
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/*
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* StreamGetINetAddr
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*/
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unsigned long
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StreamGetINetAddr(ps)
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ChimeraStream ps;
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{
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return(ps->addr);
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}
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/*
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* StreamCreate
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*/
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ChimeraStream
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StreamCreate(cres, fd)
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ChimeraResources cres;
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int fd;
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{
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MemPool mp;
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ChimeraStream ps;
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fcntl(fd, F_SETFL, FNDELAY);
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mp = MPCreate();
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ps = (ChimeraStream)MPCGet(mp, sizeof(struct ChimeraStreamP));
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ps->mp = mp;
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ps->cres = cres;
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ps->s = fd;
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return((ChimeraStream)ps);
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}
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