return script[len(PREFIX):-len(SUFFIX)]
-def find_func_name(script):
+def find_cipher_func(script):
FUNC_NAME = R"([a-zA-Z0-9$]+)"
DECODE_URI_COMPONENT = R"(\(decodeURIComponent)?"
FUNC_PARAMS = R"(\([a-zA-Z,\.]+\.s\))"
func_name = match.groups()[0]
return func_name
-def decode_signature(js_url, signature):
+def find_url_func(script):
+ FUNC_NAME = R"([a-zA-Z0-9$]+)"
+ PATTERN = R"this\.url\s*=\s*" + FUNC_NAME + R"\s*\(\s*this\s*\)"
+
+ match = re.search(PATTERN, script)
+ func_name = match.groups()[0]
+ return func_name
+
+def decode_cipher_url(js_url, cipher):
+ cipher = urllib.parse.parse_qs(cipher)
+ args = [
+ cipher["url"][0],
+ cipher["sp"][0],
+ cipher["s"][0],
+ ]
+
f = urlopen(js_url)
script = f.read().decode("utf-8")
f.close()
- func_name = find_func_name(script)
+ cipher_func_name = find_cipher_func(script)
+ url_func_name = find_url_func(script)
params = {
- "func_name": func_name,
- "signature": json.dumps(signature),
+ "cipher_func_name": cipher_func_name,
+ "url_func_name": url_func_name,
+ "args": json.dumps(args),
"code": json.dumps(extract_js(script)),
}
p = subprocess.Popen(
js_decode_script = ("""
const vm = require('vm');
- const sandbox = {
- location: {
- hash: '',
- href: '',
- protocol: 'http:'
- },
- history: {
- pushState: function(){}
- },
- document: {},
- navigator: {
- userAgent: ''
- },
- XMLHttpRequest: class XMLHttpRequest {},
- matchMedia: () => ({matches: () => {}, media: ''}),
- signature: %(signature)s,
- transformed_signature: null,
- g: function(){} // this is _yt_player
+ const fakeGlobal = {};
+ fakeGlobal.window = fakeGlobal;
+ fakeGlobal.location = {
+ hash: '',
+ host: 'www.youtube.com',
+ hostname: 'www.youtube.com',
+ href: 'https://www.youtube.com',
+ origin: 'https://www.youtube.com',
+ pathname: '/',
+ protocol: 'https:'
+ };
+ fakeGlobal.history = {
+ pushState: function(){}
+ };
+ fakeGlobal.document = {
+ location: fakeGlobal.location
+ };
+ fakeGlobal.document = {};
+ fakeGlobal.navigator = {
+ userAgent: ''
};
- sandbox.window = sandbox;
+ fakeGlobal.XMLHttpRequest = class XMLHttpRequest {};
+ fakeGlobal.matchMedia = () => ({matches: () => {}, media: ''});
+ fakeGlobal.result_url = null;
+ fakeGlobal.g = function(){}; // this is _yt_player
const code_string = %(code)s + ';';
- const exec_string = 'transformed_signature = %(func_name)s(signature);';
- vm.runInNewContext(code_string + exec_string, sandbox);
+ const exec_string = 'result_url = %(url_func_name)s(%(cipher_func_name)s(...%(args)s));';
+ vm.runInNewContext(code_string + exec_string, fakeGlobal);
- console.log(sandbox.transformed_signature);
+ console.log(fakeGlobal.result_url);
""" % params)
p.stdin.write(js_decode_script.encode("utf-8"))
p.stdin.close()
- transformed_signature = p.stdout.read().decode("utf-8").strip()
- transformed_signature = urllib.parse.unquote(transformed_signature)
+ result_url = p.stdout.read().decode("utf-8").strip()
if p.wait() != 0:
raise Exception("js failed to execute: %d" % p.returncode)
- return transformed_signature
+ return result_url
def get_best_video(player_config):
js_url = player_config["assets"]["js"]
continue
if "signatureCipher" in format_data:
- cipher = urllib.parse.parse_qs(format_data["signatureCipher"])
- video_url = cipher["url"][0]
- if "sig" in cipher:
- signature = cipher["sig"][0]
- elif "s" in cipher:
- signature = decode_signature(js_url, cipher["s"][0])
- sp = cipher.get("sp", ["signature"])[0]
- video_url = append_to_qs(video_url, {sp: signature})
+ video_url = decode_cipher_url(js_url, format_data["signatureCipher"])
else:
video_url = format_data["url"]