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#
# inet2hex - Internet address conversion, dotted-decimal to hex
#
inet2hex ()
{
local IFS
IFS=.
set -- $1
if (( $# != 4 )); then
echo "inet2hex: incorrect input format: $1" >&2
echo "inet2hex: usage: inet2hex XX.XX.XX.XX" >&2
return 2
fi
printf "0x%02x%02x%02x%02x\n" $1 $2 $3 $4
}
#
# hex2inet - Internet address conversion, hex to dotted-decimal
#
hex2inet ()
{
local x1 x2 x3 x4
local rev
OPTIND=1
while getopts "r" o
do
case "$o" in
r) rev=true;;
*) echo "hex2inet: usage: hex2inet [-r] [0x]XXXXXXXX" >&2 ; exit 2;;
esac
done
shift $(( $OPTIND - 1 ))
case "$1" in
0x*) h=${1#??} ;;
*) h=$1 ;;
esac
if (( ${#h} != 8 )); then
echo "hex2inet: $h not in inet format" >&2
echo "hex2inet: usage: hex2inet [0x]XXXXXXXX" >&2
return 2
fi
x1=$(( 0x${h:0:2} ))
x2=$(( 0x${h:2:2} ))
x3=$(( 0x${h:4:2} ))
x4=$(( 0x${h:6:2} ))
if [ -z "$rev" ] ; then
printf "%d.%d.%d.%d\n" $x1 $x2 $x3 $x4
else
printf "%d.%d.%d.%d\n" $x4 $x3 $x2 $x1
fi
return 0
}
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