veoh.rb

#!/usr/bin/env ruby -Ku
require 'rubygems'
require 'nokogiri'
require 'net/http'
require 'uri'

# こんな感じ?
class Veoh
  @@client = ''
  @@version = '3.0.0'
  @@headers = {
    "Content-type"=> "application/xml",
    "User-agent"=> "veoh-3.0 service (MacOS; Safari; darwin)"
  }
  def initialize url
    @video_id = get_video_id url
    return unless @video_id
    data = "<MediaIdList><MediaId permalinkId=\"#{@video_id}\"/></MediaIdList>"
    uri = URI("http://www.veoh.com/service/getMediaInfo.xml?clientGUID=#{@@client}&version=#{@@version}")
    xml = Nokogiri::XML.parse(Net::HTTP.new(uri.host).post(uri.request_uri, data, @@headers).body)
    @piece_url = xml.at('//PieceHashFile').text.strip
    @file_hash = xml.at('//FileHash').text.strip
    #@file_size = xml.at('//Size').text.strip
    @file_title = xml.at('//Video/Title').text.strip
    @file_ext =  xml.at('//Extension').text()
  end
  def get_video
    #file = File.open("#{@file_title}.#{@file_ext}", 'w')
    xml2 = Nokogiri::XML.parse(fetch(@piece_url).body)
    ids = xml2.search('//piece/@id').to_ary
    len = ids.length
    counter = 0
    ids.inject(File.open("#{@file_title}.#{@file_ext}", 'w')) do |file, id|
      p "download: #{counter+=1} / #{len}"
      file.write(fetch("http://p-cache.veoh.com/cache/get.jsp?fileHash=#{@file_hash}&pieceHash=#{id.text.strip}").body)
      file
    end.close
    p 'download: done'
  end
  def fetch( uri_str, limit = 10 )
    raise ArgumentError, 'http redirect too deep' if limit == 0
    response = Net::HTTP.get_response(URI.parse(uri_str))
    case response
    when Net::HTTPSuccess     then response
    when Net::HTTPRedirection then fetch(response['location'], limit - 1)
    else
      response.error!
    end
  end
  def get_video_id url
    if(/permalinkId=(v[^&]+)/.match(url)) then
      $1
    elsif(/videos\/(v[^&?]+)/.match(url)) then
      $1
    end
  end
end

veoh = Veoh.new(ARGV[0])
veoh.get_video