MangaRock offline JPEG downloader

manga-dl.sh

#!/bin/bash

# script to download whole manga images offline

# sudo apt install curl webp imagemagick wget
# wget "https://raw.githubusercontent.com/hjmeijer/xorfile/master/xorfile.py"
# n=1 ; while [[ $n != 10000000 ]] ; do echo -ne '\x65' >> key ; let n++ ; done
# ./manga-dl.sh 'https://mangarock.com/manga/mrs-serie-100266297'

URL=$1

name=$(curl -s -k "$URL" | cut -d '>' -f 7 | head -n 1 | cut -d '<' -f 1 | tr -d '<>:"/\|?*')
mkdir "$name"
cd "$name"
manga=$(echo "$URL" | cut -d '/' -f 5)
chapters=$(curl -s -k "https://api.mangarockhd.com/query/web401/info?oid=$manga" | grep -o "mrs-chapter-...................." | cut -d '"' -f 1)
c=1
for chapter in $chapters
do
	mkdir $c
	cd $c
	mris=$(curl -s -k "https://api.mangarockhd.com/query/web401/pages?oid=$chapter" | cut -d '[' -f 2 | tr -d '"{[]}' | tr ',' ' ')
	m=1
	for mri in $mris
	do
		curl -s -k "$mri" > mri
		echo -ne '\x52\x49\x46\x46' >> $m.riff
		size=$(ls -l mri | cut -d ' ' -f 5)
		let size+=7
		hex=$(printf %08x $size)
		echo -ne "\x${hex:6:2}\x${hex:4:2}\x${hex:2:2}\x${hex:0:2}" >> $m.riff
		echo -ne '\x57\x45\x42\x50\x56\x50\x38' >> $m.riff
		python ../../xorfile.py mri ../../key >> $m.riff
		dwebp $m.riff -o $m.png &> /dev/null
		convert $m.png $m.jpg >/dev/null
		rm mri $m.riff $m.png
		let m++
	done
	cd ..
	let c++
done
cd ..