簡易Radiko録音スクリプト

rec_radiko.sh

#!/bin/bash

LANG=ja_JP.utf8

pid=$$
date=`date '+%Y-%m-%d-%H_%M'`
playerurl=http://radiko.jp/apps/js/flash/myplayer-release.swf
playerfile="/tmp/player.swf"
keyfile="/tmp/authkey.png"

outdir="."

if [ $# -le 1 ]; then
  echo "usage : $0 channel_name duration(minuites) [outputdir] [prefix]"
  exit 1
fi

if [ $# -ge 2 ]; then
  channel=$1
  DURATION=`expr $2 \* 60`
fi
if [ $# -ge 3 ]; then
  outdir=$3
fi
PREFIX=${channel}
if [ $# -ge 4 ]; then
  PREFIX=$4
fi

#
# get player
#
if [ ! -f $playerfile ]; then
  wget -q -O $playerfile $playerurl

  if [ $? -ne 0 ]; then
    echo "failed get player"
    exit 1
  fi
fi

#
# get keydata (need swftool)
#
if [ ! -f $keyfile ]; then
  swfextract -b 12 $playerfile -o $keyfile

  if [ ! -f $keyfile ]; then
    echo "failed get keydata"
    exit 1
  fi
fi

if [ -f auth1_fms_${pid} ]; then
  rm -f auth1_fms_${pid}
fi

#
# access auth1_fms
#
wget -q \
     --header="pragma: no-cache" \
     --header="X-Radiko-App: pc_ts" \
     --header="X-Radiko-App-Version: 4.0.0" \
     --header="X-Radiko-User: test-stream" \
     --header="X-Radiko-Device: pc" \
     --post-data='\r\n' \
     --no-check-certificate \
     --save-headers \
     -O auth1_fms_${pid} \
     https://radiko.jp/v2/api/auth1_fms

if [ $? -ne 0 ]; then
  echo "failed auth1 process"
  exit 1
fi

#
# get partial key
#   
authtoken=`perl -ne 'print $1 if(/x-radiko-authtoken: ([\w-]+)/i)' auth1_fms_${pid}`
offset=`perl -ne 'print $1 if(/x-radiko-keyoffset: (\d+)/i)' auth1_fms_${pid}`
length=`perl -ne 'print $1 if(/x-radiko-keylength: (\d+)/i)' auth1_fms_${pid}`

partialkey=`dd if=$keyfile bs=1 skip=${offset} count=${length} 2> /dev/null | base64`

#echo "authtoken: ${authtoken} \noffset: ${offset} length: ${length} \npartialkey: $partialkey"

rm -f auth1_fms_${pid}

if [ -f auth2_fms_${pid} ]; then  
  rm -f auth2_fms_${pid}
fi

#
# access auth2_fms
#
wget -q \
     --header="pragma: no-cache" \
     --header="X-Radiko-App: pc_ts" \
     --header="X-Radiko-App-Version: 4.0.0" \
     --header="X-Radiko-User: test-stream" \
     --header="X-Radiko-Device: pc" \
     --header="X-Radiko-AuthToken: ${authtoken}" \
     --header="X-Radiko-PartialKey: ${partialkey}" \
     --post-data='\r\n' \
     --no-check-certificate \
     -O auth2_fms_${pid} \
     https://radiko.jp/v2/api/auth2_fms

if [ $? -ne 0 -o ! -f auth2_fms_${pid} ]; then
  echo "failed auth2 process"
  exit 1  
fi

#echo "authentication success"

areaid=`perl -ne 'print $1 if(/^([^,]+),/i)' auth2_fms_${pid}`
#echo "areaid: $areaid"

rm -f auth2_fms_${pid}

#
# get stream-url
#

if [ -f ${channel}.xml ]; then
  rm -f ${channel}.xml
fi

wget -q "http://radiko.jp/v2/station/stream/${channel}.xml"

stream_url=`echo "cat /url/item[1]/text()" | xmllint --shell ${channel}.xml | tail -2 | head -1`
url_parts=(`echo ${stream_url} | perl -pe 's!^(.*)://(.*?)/(.*)/(.*?)$/!$1://$2 $3 $4!'`)

rm -f ${channel}.xml

#
# rtmpdump
#
#rtmpdump -q \
rtmpdump \
         -r ${url_parts[0]} \
         --app ${url_parts[1]} \
         --playpath ${url_parts[2]} \
         -W $playerurl \
         -C S:"" -C S:"" -C S:"" -C S:$authtoken \
         --live \
         --stop ${DURATION} \
         --flv "/tmp/${channel}_${date}"

ffmpeg -loglevel quiet -y -i "/tmp/${channel}_${date}" -acodec libmp3lame -ab 128k "${outdir}/${PREFIX}_${date}.mp3"
if [ $? = 0 ]; then
  rm -f "/tmp/${channel}_${date}"
fi

• 録音時間指定追加
• ファイル名は自動生成し、出力ディレクトリを指定するように変更
• mp3 変換
• 同時刻に別のチャンネルを指定して複数起動された場合の対応を入れたつもり

• ファイル名を指定可能にした
• 余計なエコーバックを削った。ffmpeg の出力は抑制できないのかな...

radikoの仕様変更に対応