Radikoを聴くためのスクリプトです。元々は認証してプレイリストのURLを取得するものを、ちょっとだけ修正と整理をしてコマンドラインから簡単に聴けるようにしてみました。ffmpegの付属ツールffplayが必要です。HLS形式での配信になり、rtmpdump, swftoolsが不要になりました。

radiko.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import urllib.request, urllib.error, urllib.parse
import os, sys, datetime, argparse, re
import subprocess
import base64
import shlex
import logging
from sys import argv

auth_token = ""
auth_key = "bcd151073c03b352e1ef2fd66c32209da9ca0afa" ## 迴ｾ迥ｶ縺ｯ蝗ｺ螳・key_lenght = 0
key_offset = 0

def auth1():
    url = "https://radiko.jp/v2/api/auth1"
    headers = {}
    auth_response = {}

    headers = {
        "User-Agent": "curl/7.56.1",
        "Accept": "*/*",
        "X-Radiko-App":"pc_html5" ,
        "X-Radiko-App-Version":"0.0.1" ,
        "X-Radiko-User":"dummy_user" ,
        "X-Radiko-Device":"pc" ,
    }
    req = urllib.request.Request( url, None, headers  )
    res = urllib.request.urlopen(req)
    auth_response["body"] = res.read()
    auth_response["headers"] = res.info()
    return auth_response

def get_partial_key(auth_response):
    authtoken = auth_response["headers"]["x-radiko-authtoken"]
    offset    = auth_response["headers"]["x-radiko-keyoffset"]
    length    = auth_response["headers"]["x-radiko-keylength"]
    offset = int(offset)
    length = int(length)
    partialkey= auth_key[offset:offset+length]
    partialkey = base64.b64encode(partialkey.encode())

    # logging.info(f"authtoken: {authtoken}")
    # logging.info(f"offset: {offset}")
    # logging.info(f"length: {length}")
    # logging.info(f"partialkey: {partialkey}")

    return [partialkey,authtoken]

def auth2( partialkey, auth_token ) :
    url = "https://radiko.jp/v2/api/auth2"
    headers =  {
        "X-Radiko-AuthToken": auth_token,
        "X-Radiko-Partialkey": partialkey,
        "X-Radiko-User": "dummy_user",
        "X-Radiko-Device": 'pc' # 'pc' 蝗ｺ螳・    }
    req  = urllib.request.Request( url, None, headers  )
    res  = urllib.request.urlopen(req)
    txt = res.read()
    area = txt.decode()
    print(txt)
    return area

def gen_temp_chunk_m3u8_url( url, auth_token ):
    headers =  {
        "X-Radiko-AuthToken": auth_token,
    }
    req  = urllib.request.Request( url, None, headers  )
    res  = urllib.request.urlopen(req)
    body = res.read().decode()
    lines = re.findall( '^https?://.+m3u8$' , body, flags=(re.MULTILINE) )
    # embed()
    return lines[0]


res = auth1()
ret = get_partial_key(res)
token = ret[1]
partialkey = ret[0]
auth2( partialkey, token )
url = f'http://f-radiko.smartstream.ne.jp/{argv[1]}/_definst_/simul-stream.stream/playlist.m3u8'
m3u8 = gen_temp_chunk_m3u8_url( url ,token)

os.system( f"ffplay -nodisp -loglevel quiet -headers 'X-Radiko-Authtoken:{token}' -i '{m3u8}'")
#print( f"curl -v  -H 'X-Radiko-Authtoken:{data['token']}' '{data['url']}'   " )