#!/usr/bin/env python
# -*- coding: UTF-8 -*-
#
# this script is for downloading files from rapidshare
# Copyright (C) 2010 Jakub Jankiewicz (jcubic@onet.pl)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
from urllib2 import urlopen, Request
from urllib import urlencode
from sys import argv
import os
import re
import time
import base64

class DownloadLimitException(Exception):
    def __init__(self, *arg):
        Exception.__init__(self, *arg)

def download(url):
    page = urlopen(url).read()
    action_url_regex = '<form id="[^"]*" action="([^"]*)"'
    s_url = re.search(action_url_regex, page)
    if s_url:
        url = s_url.group(1)
        data = urlencode({'dl.start': 'Free'})
        request = Request(url, data)
        page = urlopen(request).read()
        action_url_regex = '<form name="[^"]*" action="([^"]*)"'
        c_regex = 'var c=([0-9]*);'
        limit_regex = 'You have reached the download limit for free-users'
        if re.match(limit_regex, page):
            raise DownloadLimitException(limit_regex)
        s_url = re.search(action_url_regex, page)
        s_c = re.search(c_regex, page)
        if s_url and s_c:
            url = s_url.group(1)
            c = int(s_c.group(1))
            print "wait %i seconds" % c
            time.sleep(c)
            os.system('wget "%s"' % url)

def main():
    if len(argv) == 2:
        try:
            download(argv[1])
        except DownloadLimitException, e:
            print e.msg


if __name__ == '__main__':
    main()