#!/usr/bin/python3 import sys import os import base64 import json import datetime import pytz # Add parent directory to path for o11 import sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) import o11 from bs4 import BeautifulSoup from pywidevine.cdm import Cdm from pywidevine.device import Device from pywidevine.pssh import PSSH from Crypto.Cipher import AES from Crypto.Util.Padding import unpad # Parse command line parameters user = o11.parse_params(sys.argv, 'user') password = o11.parse_params(sys.argv, 'password') device = o11.parse_params(sys.argv, 'device') pin = o11.parse_params(sys.argv, 'pin') 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 = o11.parse_params(sys.argv, 'cdm') drm = o11.parse_params(sys.argv, 'drm') kid = o11.parse_params(sys.argv, 'kid') pssh = o11.parse_params(sys.argv, 'pssh') challenge = o11.parse_params(sys.argv, 'challenge') heartbeaturl = o11.parse_params(sys.argv, 'heartbeaturl') heartbeatparams = o11.parse_params(sys.argv, 'heartbeatparams') # Session setup o11Session = o11.session(bind=bind, proxy=proxy, worker=worker) req = o11Session.get_session() if doh != "": o11.dns(doh) if challenge == "cert": challenge = "CAQ=" # Configuration WVD_PATH = './WVD.wvd' SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__)) USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36' # AES decryption keys for license URL AES_KEY = b'n9cLieYkqwzNCqvi' AES_IV = b'odzcU3WdUiXLucVd' headers = { 'accept': 'application/json', 'origin': 'https://www.channel4.com', 'referer': 'https://www.channel4.com/', 'user-agent': USER_AGENT, } def decode_ais_token(e): try: encrypted_bytes = base64.b64decode(e) cipher = AES.new(AES_KEY, AES.MODE_CBC, AES_IV) decrypted = cipher.decrypt(encrypted_bytes) unpadded = unpad(decrypted, AES.block_size) return unpadded.decode('utf-8') except: return None def get_pssh_from_mpd(url): response = req.get(url, headers={'User-Agent': USER_AGENT}) content_protections = BeautifulSoup(response.content, features="xml").findAll('ContentProtection') for cp in content_protections: if cp.get('schemeIdUri', '').lower() == 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': pssh_elem = cp.find('cenc:pssh') if pssh_elem: return pssh_elem.text return None def get_single(channel_id): response = req.get(f'https://www.channel4.com/simulcast/channels/{channel_id}', headers=headers) try: data = response.json() video_profiles = data['channelInfo']['videoProfiles'] stream = None for v in video_profiles: if v.get('cdnFullName') == 'yospace' and 'dashwv' in v.get('name', ''): stream = v['streams'][0] break if stream: return stream['uri'], stream['token'] except: pass return None, None def do_cdm_internal(challenge_b64, lic_url, video_url): lic_headers = { 'Origin': 'https://www.channel4.com', 'Referer': 'https://www.channel4.com/', 'User-Agent': USER_AGENT, 'content-type': 'application/json', } json_data = { 'token': lic_url.split('?')[-1].split('&t=')[-1].split('&')[0], 'video': {'type': 'simulcast', 'url': video_url}, 'message': challenge_b64, } response = req.post(lic_url.split('?')[0], headers=lic_headers, json=json_data) try: data = response.json() return data['license'] except: return None def do_cdm_external(pssh_b64, lic_url, video_url): try: pssh_obj = PSSH(pssh_b64) 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 = { 'Origin': 'https://www.channel4.com', 'Referer': 'https://www.channel4.com/', 'User-Agent': USER_AGENT, 'content-type': 'application/json', } json_data = { 'token': lic_url.split('?')[-1].split('&t=')[-1].split('&')[0], 'video': {'type': 'simulcast', 'url': video_url}, 'message': base64.b64encode(challenge_data).decode('utf-8'), } licence = req.post(lic_url.split('?')[0], headers=lic_headers, json=json_data) data = licence.json() cdm_obj.parse_license(session_id, base64.b64decode(data['license'])) keys = [] for key in cdm_obj.get_keys(session_id): if key.type != 'SIGNING': keys.append(f"{key.kid.hex}:{key.key.hex()}") cdm_obj.close(session_id) return keys except Exception as e: print(f'CDM external failed: {e}', file=sys.stderr) return None def do_action(): if action == "login": print("Channel4 does not require login for live channels", file=sys.stderr) sys.exit() if action == "channels": output = {'Channels': []} response = req.get('https://www.channel4.com/api/now-next', headers=headers) try: data = response.json() for ch in data['slots'].get('now', []): channel = { 'Name': ch.get('channel', 'Unknown'), 'Mode': 'live', 'SessionManifest': True, 'ManifestScript': f"id={ch.get('channel', '')}", 'CdmType': 'widevine', 'UseCdm': True, 'Cdm': f"id={ch.get('channel', '')}", 'Video': 'best', 'OnDemand': True, 'SpeedUp': True, } output['Channels'].append(channel) print(json.dumps(output, indent=2)) except Exception as e: print(f"Error: {e}", file=sys.stderr) return "error" elif action == "events": output = {'Events': []} print(json.dumps(output, indent=2)) elif action == "heartbeat": sys.exit() elif action == "manifest": try: channel_id = id video_url, enc_lic_url = get_single(channel_id) if not video_url: return "error" lic_url = decode_ais_token(enc_lic_url) if enc_lic_url else None output = { "Cdn": [{"Name": "default", "ManifestUrl": video_url}], "ManifestUrl": video_url, "Headers": {"Manifest": {'User-Agent': USER_AGENT}, "Media": {'User-Agent': USER_AGENT}}, "Heartbeat": {"Url": '', "Params": '', "PeriodMs": 5*60*1000}, "LicenseUrl": lic_url } print(json.dumps(output)) except Exception as e: print(f"Error: {e}", file=sys.stderr) return "error" elif action == "cdm" and cdm == "internal": try: channel_id = id video_url, enc_lic_url = get_single(channel_id) lic_url = decode_ais_token(enc_lic_url) if enc_lic_url else None if lic_url: result = do_cdm_internal(challenge, lic_url, video_url) if result: print(result) else: return "error" else: return "error" except Exception as e: print(f"Error: {e}", file=sys.stderr) return "error" elif action == "cdm" and cdm == "external": try: channel_id = id video_url, enc_lic_url = get_single(channel_id) lic_url = decode_ais_token(enc_lic_url) if enc_lic_url else None if lic_url: pssh_to_use = pssh if pssh else get_pssh_from_mpd(video_url) if pssh_to_use: keys = do_cdm_external(pssh_to_use, lic_url, video_url) if keys: for key in keys: print(key) else: return "error" else: return "error" else: return "error" except Exception as e: print(f"Error: {e}", file=sys.stderr) return "error" else: print("invalid action: " + action, file=sys.stderr) do_action()