35 lines
865 B
C
35 lines
865 B
C
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/* $NetBSD: nat_setgroupmap.c,v 1.1.1.1 2004/03/28 08:56:17 martti Exp $ */
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/*
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* Copyright (C) 1993-2001 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*/
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#if !defined(lint)
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static const char rcsid[] = "@(#)Id: nat_setgroupmap.c,v 1.1 2003/04/13 06:40:14 darrenr Exp";
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#endif
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#include "ipf.h"
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void nat_setgroupmap(n)
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ipnat_t *n;
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{
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if (n->in_outmsk == n->in_inmsk)
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n->in_ippip = 1;
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else if (n->in_flags & IPN_AUTOPORTMAP) {
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n->in_ippip = ~ntohl(n->in_inmsk);
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if (n->in_outmsk != 0xffffffff)
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n->in_ippip /= (~ntohl(n->in_outmsk) + 1);
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n->in_ippip++;
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if (n->in_ippip == 0)
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n->in_ippip = 1;
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n->in_ppip = USABLE_PORTS / n->in_ippip;
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} else {
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n->in_space = USABLE_PORTS * ~ntohl(n->in_outmsk);
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n->in_nip = 0;
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if (!(n->in_ppip = n->in_pmin))
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n->in_ppip = 1;
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n->in_ippip = USABLE_PORTS / n->in_ppip;
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}
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}
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