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35 lines
874 B
C
35 lines
874 B
C
/* $NetBSD: nat_setgroupmap.c,v 1.2 2012/07/22 14:27:36 darrenr Exp $ */
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/*
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* Copyright (C) 2012 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 1.1.1.2 2012/07/22 13:44:39 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_nsrcmsk == n->in_osrcmsk)
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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_osrcmsk);
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if (n->in_nsrcmsk != 0xffffffff)
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n->in_ippip /= (~ntohl(n->in_nsrcmsk) + 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_nsrcmsk);
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n->in_snip = 0;
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if (!(n->in_ppip = n->in_spmin))
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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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