tw-ip-source-conv1

gistfile1.txt

#!/bin/bash

ip2dec () {
    local a b c d ip=$@
    IFS=. read -r a b c d <<< "$ip"
    printf '%d\n' "$((a * 256 ** 3 + b * 256 ** 2 + c * 256 + d))"
}

die () {
	echo $1
	exit $2
}

chop () {
	echo $@ | sed "s/\"//g" | cut -d "." -f 6
}

test -r $1 || die "No input file" 1

while read line; do
	words=$(wc -w <<<$line)
	if (( $words == 5 )); then
		read -r a b c d e <<< $line
		ipSource=$(ip2dec $c)
		ipDest=$(ip2dec $d)
		dc=$(chop $e)
		echo "$ipSource,$ipDest,*,$dc,*,*,*"
	elif (( $words == 3 )); then
		read -r a b dc <<< $line
		ipSource=$(ip2dec $a)
		ipDest=$(ip2dec $b)
		echo "$ipSource,$ipDest,*,$dc,*,*,*"
	else
		die "Can't recognize input file format"
	fi
done < $1