#!/usr/bin/python3
import sys
import os
import o11
import json
import datetime
import pytz
import base64
from pywidevine.cdm import Cdm
from pywidevine.device import Device
from pywidevine.pssh import PSSH
from bs4 import BeautifulSoup

WVD_PATH = './WVD.wvd'

user = o11.parse_params(sys.argv, 'user')
password = o11.parse_params(sys.argv, 'password')

id = o11.parse_params(sys.argv, 'id')
action = o11.parse_params(sys.argv, 'action')

bind = o11.parse_params(sys.argv, 'bind')
proxy = o11.parse_params(sys.argv, 'proxy')
doh = o11.parse_params(sys.argv, 'doh')
worker = o11.parse_params(sys.argv, 'worker')

cdm_param = o11.parse_params(sys.argv, 'cdm')
challenge = o11.parse_params(sys.argv, 'challenge')

o11Session = o11.session(bind=bind, proxy=proxy, worker=worker)
req = o11Session.get_session()
if doh != "":
    o11.dns(doh)

if challenge == "cert":
    challenge = "CAQ="

authFile = '/RMCSport_' + user + '.tokens'
user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36'

def find_wv_pssh_offsets(raw):
    offsets = []
    offset = 0
    while True:
        offset = raw.find(b'pssh', offset)
        if offset == -1:
            break
        size = int.from_bytes(raw[offset-4:offset], byteorder='big')
        pssh_offset = offset - 4
        offsets.append(raw[pssh_offset:pssh_offset+size])
        offset += size
    return offsets

def to_pssh(content):
    wv_offsets = find_wv_pssh_offsets(content)
    return [base64.b64encode(wv_offset).decode() for wv_offset in wv_offsets]

def init_to_pssh(init_url):
    headers = {'Accept': '*/*', 'Origin': 'https://www.rmcsport.tv', 'Referer': 'https://www.rmcsport.tv/', 'User-Agent': user_agent}
    response = req.get(init_url, headers=headers)
    return to_pssh(response.content)

def do_cdm_external(pssh_data, token):
    pssh_obj = PSSH(pssh_data)
    device_obj = Device.load(WVD_PATH)
    cdm_obj = Cdm.from_device(device_obj)
    session_id = cdm_obj.open()
    challenge_data = cdm_obj.get_license_challenge(session_id, pssh_obj)
    lic_headers = {'customdata': f'description={user_agent}&deviceId=byPassARTHIUS&deviceName=Chrome-121.0.0.0---&deviceType=PC&osName=Windows&osVersion=10&persistent=false&resolution=2048x1152&tokenType=castoken&tokenSSO={token}&type=LIVEOTT', 'origin': 'https://www.rmcsport.tv', 'referer': 'https://www.rmcsport.tv/', 'user-agent': user_agent, 'content-type': 'application/octet-stream'}
    licence = req.post('https://ws-backendtv.sfr.fr/asgard-drm-widevine/public/licence', headers=lic_headers, data=challenge_data)
    cdm_obj.parse_license(session_id, licence.content)
    keys = [f"{key.kid.hex}:{key.key.hex()}" for key in cdm_obj.get_keys(session_id) if key.type != 'SIGNING']
    cdm_obj.close(session_id)
    return keys

def get_pssh_from_mpd(url):
    headers = {'Accept': '*/*', 'Origin': 'https://www.rmcsport.tv', 'Referer': 'https://www.rmcsport.tv/', 'User-Agent': user_agent}
    response = req.get(url, headers=headers)
    soup = BeautifulSoup(response.content, features="xml")
    init = soup.find('SegmentTemplate')['initialization']
    bandwidth = soup.find('Representation')['bandwidth']
    rep_id = soup.find('Representation')['id']
    location = soup.find('Location')
    if location is not None:
        location = location.text
    else:
        location = response.url
    loc_parts = location.split('/')
    loc_parts.pop()
    init_url = '/'.join(loc_parts) + '/' + init.replace('$Bandwidth$', bandwidth).replace('$RepresentationID$', rep_id)
    psshs = init_to_pssh(init_url)
    return psshs[0] if psshs else None

def get_channels(token):
    headers = {'authority': 'ws-backend.rmcsport.tv', 'accept': 'application/json, text/plain, */*', 'origin': 'https://www.rmcsport.tv', 'referer': 'https://www.rmcsport.tv/', 'user-agent': user_agent}
    params = {'token': token, 'device': 'browser', 'app': 'rmcsport'}
    response = req.get('https://ws-backend.rmcsport.tv/sekai-service-plan/public/v2/service-list', params=params, headers=headers)
    return sorted(response.json(), key=lambda k: k.get('zappingId', 0))

def check_token(token):
    headers = {'authority': 'ws-backend.rmcsport.tv', 'accept': 'application/json, text/plain, */*', 'origin': 'https://www.rmcsport.tv', 'referer': 'https://www.rmcsport.tv/', 'user-agent': user_agent}
    params = {'token': token, 'device': 'browser', 'app': 'rmcsport'}
    response = req.get('https://ws-backend.rmcsport.tv/sekai-service-plan/public/v2/service-list', params=params, headers=headers)
    response.raise_for_status()

def do_login_request(username, pwd):
    headers = {'Accept': 'application/json; charset=utf-8', 'Authorization': 'Basic Uk1DU3BvcnRBbmRyb2lkVFZ2MTpiZWdnYXJzNjg=', 'secret': 'Basic ' + base64.b64encode(f'{username}:{pwd}'.encode()).decode(), 'Content-Type': 'application/json', 'User-Agent': 'RMCSPORT/7.2.8 (com.sfr.android.sfrsport; build:7283000; Android OS 9) okhttp/4.3.1'}
    response = req.get('https://sso-client.sfr.fr/cas/services/rest/3.0/createToken.json?duration=86400', headers=headers)
    return response.json().get('createToken', {}).get('token', '')

def login():
    print("logging in...", file=sys.stderr)
    token = do_login_request(user, password)
    auth_data = {'token': token}
    json.dump(auth_data, open(os.path.abspath(os.path.dirname(__file__)) + authFile, 'w'))
    print("logged in successfully", file=sys.stderr)

def get_auth():
    auth = json.load(open(os.path.abspath(os.path.dirname(__file__)) + authFile))
    token = auth['token']
    check_token(token)
    return token

def do_action():
    if action == "login":
        login()
        sys.exit()
    try:
        token = get_auth()
    except:
        return "error"

    if action == "channels":
        output = {'Channels': []}
        for c in get_channels(token):
            for s in c.get('streams', []):
                if s.get('drm') == 'WIDEVINE':
                    output['Channels'].append({'Name': c['name'], 'Mode': "live", 'SessionManifest': True, 'ManifestScript': 'url=' + s['url'], 'CdmType': "widevine", 'UseCdm': True, 'Cdm': 'url=' + s['url'], 'Video': 'best'})
                    break
        print(json.dumps(output, indent=2))
    elif action == "events":
        output = {'Events': []}
        for c in get_channels(token):
            for s in c.get('streams', []):
                if s.get('drm') == 'WIDEVINE':
                    output['Events'].append({'Name': c['name'], 'Mode': "live", 'SessionManifest': True, 'ManifestScript': 'url=' + s['url'], 'CdmType': "widevine", 'UseCdm': True, 'Cdm': 'url=' + s['url'], 'Video': 'best', 'Autostart': True, 'Start': int(datetime.datetime.now(pytz.UTC).timestamp()), 'End': int((datetime.datetime.now(pytz.UTC) + datetime.timedelta(hours=4)).timestamp())})
                    break
        print(json.dumps(output, indent=2))
    elif action == "manifest":
        url = id.replace('url=', '') if id.startswith('url=') else id
        pssh_data = get_pssh_from_mpd(url)
        output = {"Cdn": [], "ManifestUrl": url, "Headers": {"Manifest": {'User-Agent': user_agent}, "Media": {'User-Agent': user_agent}}, "Token": token}
        if pssh_data:
            output['Pssh'] = pssh_data
        print(json.dumps(output))
    elif action == "cdm" and cdm_param == "external":
        url = id.replace('url=', '') if id.startswith('url=') else id
        pssh_data = get_pssh_from_mpd(url)
        if pssh_data:
            for key in do_cdm_external(pssh_data, token):
                print(key)

if do_action() == "error":
    login()
    do_action()