do/accept


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void
do_accept(TARG, nstab, gstab)
STR *TARG;
STAB *nstab;
STAB *gstab;
{
    register STIO *nstio;
    register STIO *gstio;
    int len = sizeof buf;
    int fd;

    if (!nstab)
	goto badexit;
    if (!gstab)
	goto nuts;

    gstio = stab_io(gstab);
    nstio = stab_io(nstab);

    if (!gstio || !gstio->ifp)
	goto nuts;
    if (!nstio)
	nstio = stab_io(nstab) = stio_new();
    else if (nstio->ifp)
	do_close(nstab,FALSE);

    fd = accept(fileno(gstio->ifp),(struct sockaddr *)buf,&len);
    if (fd < 0)
	goto badexit;
    nstio->ifp = fdopen(fd, "r");
    nstio->ofp = fdopen(fd, "w");
    nstio->type = 's';
    if (!nstio->ifp || !nstio->ofp) {
	if (nstio->ifp) fclose(nstio->ifp);
	if (nstio->ofp) fclose(nstio->ofp);
	if (!nstio->ifp && !nstio->ofp) close(fd);
	goto badexit;
    }

    str_nset(TARG, buf, len);
    return;

nuts:
    if (dowarn)
	warn("accept() on closed fd");
    errno = EBADF;
badexit:
    str_sset(TARG,&str_undef);
    return;
}