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int
do_gnent(which,gimme,arglast)
int which;
int gimme;
int *arglast;
{
    register ARRAY *ary = stack;
    register int sp = arglast[0];
    register char **elem;
    register STR *TARG;
    struct netent *getnetbyname();
    struct netent *getnetbyaddr();
    struct netent *getnetent();
    struct netent *nent;

    if (which == O_GNBYNAME) {
	char *name = str_get(ary->ary_array[sp+1]);

	nent = getnetbyname(name);
    }
    else if (which == O_GNBYADDR) {
	unsigned long addr = U_L(str_gnum(ary->ary_array[sp+1]));
	int addrtype = (int)str_gnum(ary->ary_array[sp+2]);

	nent = getnetbyaddr((long)addr,addrtype);
    }
    else
	nent = getnetent();

    if (gimme != G_ARRAY) {
	astore(ary, ++sp, TARG = str_mortal(&str_undef));
	if (nent) {
	    if (which == O_GNBYNAME)
		str_numset(TARG, (double)nent->n_net);
	    else
		str_set(TARG, nent->n_name);
	}
	return sp;
    }

    if (nent) {
#ifndef lint
	(void)astore(ary, ++sp, TARG = str_mortal(&str_no));
	str_set(TARG, nent->n_name);
	(void)astore(ary, ++sp, TARG = str_mortal(&str_no));
	for (elem = nent->n_aliases; *elem; elem++) {
	    str_cat(TARG, *elem);
	    if (elem[1])
		str_ncat(TARG," ",1);
	}
	(void)astore(ary, ++sp, TARG = str_mortal(&str_no));
	str_numset(TARG, (double)nent->n_addrtype);
	(void)astore(ary, ++sp, TARG = str_mortal(&str_no));
	str_numset(TARG, (double)nent->n_net);
#else /* lint */
	elem = Nullch;
	elem = elem;
	(void)astore(ary, ++sp, str_mortal(&str_no));
#endif /* lint */
    }

    return sp;
}