#!/bin/csh -f
#
set dir=`pwd`
set karch=`uname -m`
set ipfdir=/sys/netinet
set krev=`uname -r|sed -e 's/\([0-9\.]*\)-.*/\1/'`
if ( -d /sys/arch/$karch ) set archdir="/sys/arch/$karch"
if ( -d /sys/$karch ) set archdir="/sys/$karch"
if ( -d /sys/contrib/ipfilter ) set ipfdir=/sys/contrib/ipfilter/netinet
set confdir="$archdir/conf"

if ( $dir =~ */FreeBSD* ) cd ..
echo -n "Installing "
foreach i (ip_{auth,fil,nat,pool,proxy,scan,state,sync}.[ch] fil.c \
	   ip_*_pxy.c mlfk_ipl.c ipl.h ip_compat.h ip_log.c )
	echo -n "$i ";
	cp $i /sys/netinet
	chmod 644 /sys/netinet/$i
	switch ($i)
	case *.h:
		/bin/cp $i /usr/include/netinet/$i
		chmod 644 /usr/include/netinet/$i
		breaksw 
	endsw   
end
echo ""
echo "Linking /usr/include/osreldate.h to /sys/sys/osreldate.h"
ln -s /usr/include/osreldate.h /sys/sys/osreldate.h

echo ""
echo "Patching ip6_input.c and ip6_output.c"
cat FreeBSD-4.0/ipv6-patch-$krev | (cd /sys/netinet6; patch -N)

set config=`(cd $confdir; /bin/ls -1t [0-9A-Z_]*) | head -1`
echo -n "Kernel configuration to update [$config] "
set newconfig=$<
if ( "$newconfig" != "" ) then
	set config="$confdir/$newconfig"
else
	set newconfig=$config
endif
grep -q IPFILTER $confdir/$newconfig
if ($status == 0) then
	echo "IPFilter already configured in kernel config file"
	exit 0
endif
echo "Rewriting $newconfig..."
if ( -f $confdir/$newconfig ) then
	mv $confdir/$newconfig $confdir/$newconfig.bak
endif
if ( -d $archdir/../compile/$newconfig ) then
	set bak=".bak"
	set dot=0
	while ( -d $archdir/../compile/${newconfig}.${bak} )
		set bak=".bak.$dot"
		set dot=`expr 1 + $dot`
	end
	mv $archdir/../compile/$newconfig $archdir/../compile/${newconfig}.${bak}
endif
awk '{print $0;if($2=="INET"){print"options IPFILTER\noptions IPFILTER_LOG"}}'\
	$confdir/$newconfig.bak > $confdir/$newconfig
echo "You will now need to run config on $newconfig and build a new kernel."
exit 0