#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys
import urllib
import re
import requests
import base64
import xml.dom.minidom
from Crypto.Cipher import AES

def decrypt(fs_filename):
	KEY     = ""
	IV      = ""
	API_URL = "http://service.jdownloader.org/dlcrypt/service.php?srcType=dlc&destType=pylo&data=%s"

	with open(fs_filename) as dlc:
		data = dlc.read().strip()
	data += '=' * (-len(data) % 4)
	dlc_key = data[-88:]
	dlc_data = base64.b64decode(data[:-88])
	dlc_content = load(API_URL % dlc_key)
	print(dlc_content)

	try:
		rc = base64.b64decode(re.search(r'<rc>(.+)</rc>', dlc_content, re.S).group(1))
	except AttributeError:
		print("Error: invalid DLC")

	key = iv = (AES.new(KEY, AES.MODE_CBC, IV).decrypt(rc)).decode('utf-8')
	data     = base64.b64decode(AES.new(key, AES.MODE_CBC, iv).decrypt(dlc_data)).decode('utf-8', 'ignore')
	plainData = get_packages(data)[0]
	print('\n'.join(plainData[1]))
	with open(plainData[0], mode='wt', encoding='utf-8') as rawLinkFile:
		rawLinkFile.write('\n'.join(plainData[1]))

def load(url):
	r = requests.get(url)
	return r.text

def fixurl(url):
	return urllib.unquote(url.decode('unicode-escape')).strip().rstrip('/')

def get_packages(data):
	root    = xml.dom.minidom.parseString(data).documentElement
	content = root.getElementsByTagName("content")[0]
	return parse_packages(content)

def parse_packages(startNode):
	return [(decode(base64.b64decode(decode(node.getAttribute("name")))), parse_links(node)) for node in startNode.getElementsByTagName("package")]

def parse_links(startNode):
	return [decode(base64.b64decode(node.getElementsByTagName("url")[0].firstChild.data)) for node in startNode.getElementsByTagName("file")]

def decode(string):
	try:
		return string.decode("utf8", "replace")
	except:
		return string

decrypt(sys.argv[1])