radiko_rec.rb

#!/usr/bin/env ruby -Ku
# radiko_rec.rb
# author:hizumi (webmaster@hizwarp.net)
#
# update history
# ver 0.2 2012/10/26
#  radikoの仕様変更に対応
# ver 0.1
#  やっつけで作成

def recording(channel,dur,offset,title)
# --- change this section---
# initialize settings
  da=`date '+%Y%m%d_%H%M'`.chomp!
  cachedir="/var/tmp/radiko/"
  mp3dir="/home/hoge/radiko/"
  playerurl="http://radiko.jp/player/swf/player_3.0.0.01.swf"
  playerfile="#{cachedir}player_#{channel}_#{da}.swf"
  keyfile="#{cachedir}authkey_#{channel}_#{da}.png"
  mp3file="#{mp3dir}#{channel}_#{title.gsub(" ","_").gsub(/['\"]/,"")}_#{da}.mp3"
  station=channel
  delaysec=offset
  auth1 = "auth1_fms_#{channel}_#{da}"
  auth2 = "auth2_fms_#{channel}_#{da}"
# programs path
  wget_path = "/usr/local/bin/wget"
  swfextract_path = "/usr/local/bin/swfextract"
  base64_path = "/usr/local/bin/base64"
  rtmpdump_path = "/usr/local/bin/rtmpdump"
  ffmpeg_path = "/usr/local/bin/ffmpeg-devel"
# --- change this section---
#
# main program
  begin
  `#{wget_path} -q -O #{playerfile} #{playerurl}`
  `#{swfextract_path} -b 14 #{playerfile} -o #{keyfile}`
  auth1_fms_body =`#{wget_path} -q --header="pragma: no-cache" --header="X-Radiko-App: pc_1" --header="X-Radiko-App-Version: 3.0.0" --header="X-Radiko-User: test-stream" --header="X-Radiko-Device: pc" --post-data='\r\n' --no-check-certificate --save-headers https://radiko.jp/v2/api/auth1_fms -O -`
  authtoken=Regexp.new(/x-radiko-authtoken: ([\w-]+)/i).match(auth1_fms_body)[1]
  off=Regexp.new(/x-radiko-keyoffset: (\d+)/i).match(auth1_fms_body)[1]
  length=Regexp.new(/x-radiko-keylength: (\d+)/i).match(auth1_fms_body)[1]
  partialkey=`dd if=#{keyfile} bs=1 skip=#{off} count=#{length} 2> /dev/null | #{base64_path}`.chomp!
  auth2_fms_body = `#{wget_path} -q --header="pragma: no-cache" --header="X-Radiko-App: pc_1" --header="X-Radiko-App-Version: 3.0.0" --header="X-Radiko-User: test-stream" --header="X-Radiko-Device: pc" --header="X-Radiko-Authtoken: #{authtoken}" --header="X-Radiko-Partialkey: #{partialkey}" --post-data='\r\n' --no-check-certificate https://radiko.jp/v2/api/auth2_fms -O -`
  sleep offset
  puts 'recording start.'
  `#{rtmpdump_path} -v -r "rtmpe://w-radiko.smartstream.ne.jp" --playpath "simul-stream.stream" --app "#{station}/_definst_" -W #{playerurl} -C S:"" -C S:"" -C S:"" -C S:#{authtoken} --live --stop #{dur} -o - 2>/dev/null| #{ffmpeg_path} -y -i - -vn -acodec libmp3lame -ar 48000 -ab 64k -f mp3 #{mp3file} >/dev/null`
   rescue
    return -1
	ensure
	 `rm -f #{playerfile}`
	 p "playerfile deleted."
	 `rm -f #{keyfile}`
	 p "keyfile deleted."
  end
end

# sample recording
recording("ch名",録音時間,オフセット,"録音タイトル")