An old script I whipped together that downloads every song that plays on pandora

pandorizer.rb

#!/usr/bin/env ruby

# this line imports the libpcap ruby bindings
require 'rubygems'
require 'pcap'
require 'pcaplet'
require 'socket'

# thread safe... but we're counting on the fact that the sniffer won't begin again until we're at least
# partially requesting the song (the GET keyword has already been written by the time the network listener is listening again)
def ProcessRequest(host, req, filename)
  # connect to the host that we found and grab the file
  s = TCPSocket.open(host, 80)
  s.print(req)
  f = File.new("music/#{filename}.m4a", 'w+')
  10.times { s.gets }
  while line = s.gets
    f.write(line)
  end
  f.close
  s.close
end

def GetSong
  # pandora's host for grabbing the audio
  pand_audio_host = /(audio.+\.pandora\.com)/
  # create packet sniffer on the wireless card
  network = Pcaplet.new('-s 1500 -i en1')
  # we only need to look at web packets
  www_filter = Pcap::Filter.new('tcp and dst port 80', network.capture)
  network.add_filter(www_filter)
  request = nil
  match = nil
  # only process the request if it's new
  network.each_packet do |pkt|
    # make sure that the request is valid GET request (threading issues)
    puts pkt
    if !pkt.tcp_data.nil? and !pkt.tcp_data.match('GET').nil?
      # find the audio host they're using
      match = pkt.tcp_data.match(pand_audio_host)
      if !match.nil?
        request = pkt.tcp_data
        break 
      end
    end
  end
  network.close
  return request, match[0]
end

i = 1

while true
  req, host = GetSong()
  puts req
  Thread.new(host, req, i) do |thehost, thereq, thenum|
    ProcessRequest(thehost, thereq, (0..8).map{('a'..'z').to_a[rand(26)]}.join)
    puts "Song #{thenum} downloaded"
  end
  i += 1
end