Merge d893535d7b into c5098961b0

Now also succeeds with player b12cc44b

test/test_jsinterp.py

@@ -425,6 +425,34 @@ class TestJSInterpreter(unittest.TestCase):
             self._test(jsi, [''], args=['', '-'])
             self._test(jsi, [], args=['', ''])
 
+    def test_slice(self):
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(5)}', [5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(99)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-2)}', [7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-99)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 0)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, 0)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 1)}', [0])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(3, 6)}', [3, 4, 5])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, -1)}', [1, 2, 3, 4, 5, 6, 7])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-1, 1)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-3, -1)}', [6, 7])
+        self._test('function f(){return "012345678".slice()}', '012345678')
+        self._test('function f(){return "012345678".slice(0)}', '012345678')
+        self._test('function f(){return "012345678".slice(5)}', '5678')
+        self._test('function f(){return "012345678".slice(99)}', '')
+        self._test('function f(){return "012345678".slice(-2)}', '78')
+        self._test('function f(){return "012345678".slice(-99)}', '012345678')
+        self._test('function f(){return "012345678".slice(0, 0)}', '')
+        self._test('function f(){return "012345678".slice(1, 0)}', '')
+        self._test('function f(){return "012345678".slice(0, 1)}', '0')
+        self._test('function f(){return "012345678".slice(3, 6)}', '345')
+        self._test('function f(){return "012345678".slice(1, -1)}', '1234567')
+        self._test('function f(){return "012345678".slice(-1, 1)}', '')
+        self._test('function f(){return "012345678".slice(-3, -1)}', '67')
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_youtube_signature.py

@@ -174,6 +174,14 @@ _NSIG_TESTS = [
         'https://www.youtube.com/s/player/5604538d/player_ias.vflset/en_US/base.js',
         '7X-he4jjvMx7BCX', 'sViSydX8IHtdWA',
     ),
+    (
+        'https://www.youtube.com/s/player/20dfca59/player_ias.vflset/en_US/base.js',
+        '-fLCxedkAk4LUTK2', 'O8kfRq1y1eyHGw',
+    ),
+    (
+        'https://www.youtube.com/s/player/b12cc44b/player_ias.vflset/en_US/base.js',
+        'keLa5R2U00sR9SQK', 'N1OGyujjEwMnLw',
+    ),
 ]
 
 

youtube_dl/extractor/extractors.py

@@ -1482,7 +1482,7 @@ from .vidme import (
     VidmeUserIE,
     VidmeUserLikesIE,
 )
-from .vier import VierIE, VierVideosIE
+from .vier import VierIE, VierVideosIE, VierVijfKijkOnlineIE
 from .viewlift import (
     ViewLiftIE,
     ViewLiftEmbedIE,

youtube_dl/extractor/vier.py

@@ -2,8 +2,10 @@
 from __future__ import unicode_literals
 
 import re
+import json
 import itertools
 
+from .vier_auth_aws import AwsIdp
 from .common import InfoExtractor
 from ..utils import (
     urlencode_postdata,
@@ -12,16 +14,116 @@ from ..utils import (
 )
 
 
+class VierVijfKijkOnlineIE(InfoExtractor):
+    IE_NAME = 'viervijfkijkonline'
+    IE_DESC = 'vier.be and vijf.be - Kijk Online'
+    _VALID_URL = r'https?://(?:www\.)?(?P<site>vier|vijf|goplay)\.be/video/(?P<series>(?!v3)[^/]+)/(?P<season>[^/]+)(/(?P<episode>[^/]+)|)'
+    _NETRC_MACHINE = 'vier'
+    _TESTS = [{
+        'url': 'https://www.vier.be/video/hotel-romantiek/2017/hotel-romantiek-aflevering-1',
+        'info_dict': {
+            'id': 'ebcd3c39-10a2-4730-b137-b0e7aaed247c',
+            'ext': 'mp4',
+            'title': 'Hotel Römantiek - Seizoen 1 - Aflevering 1',
+            'series': 'Hotel Römantiek',
+            'season_number': 1,
+            'episode_number': 1,
+        },
+        'skip': 'This video is only available for registered users'
+    }, {
+        'url': 'https://www.vier.be/video/blockbusters/in-juli-en-augustus-summer-classics',
+        'only_matching': True,
+    }, {
+        'url': 'https://www.vier.be/video/achter-de-rug/2017/achter-de-rug-seizoen-1-aflevering-6',
+        'only_matching': True,
+    }]
+
+    def _real_initialize(self):
+        self._logged_in = False
+        self.id_token = ''
+
+    def _login(self):
+
+        username, password = self._get_login_info()
+        if username is None or password is None:
+            self.raise_login_required()
+
+        aws = AwsIdp(pool_id='eu-west-1_dViSsKM5Y', client_id='6s1h851s8uplco5h6mqh1jac8m')
+        self.id_token, _ = aws.authenticate(username=username, password=password)
+        self._logged_in = True
+
+    def _real_extract(self, url):
+        if "#" in url:
+            url = url.split("#")[0]
+
+        if not self._logged_in:
+            self._login()
+
+        webpage = self._download_webpage(url, None)
+
+        title = self._html_search_regex(
+            r'<meta\s*property="og:title"\s*content="(.+?)"\s*/>',
+            webpage, 'title')
+
+        title_split = title.split(' - ')
+        series = title_split[0].strip()
+        if len(title_split) == 3:
+            if 'Seizoen' in title_split[1]:
+                season = title_split[1].split('Seizoen')[1].strip()
+            else:
+                season = title_split[1].strip()
+            episode = title_split[2].split('Aflevering')[1].strip()
+        elif len(title_split) == 1:
+            season = None
+            episode = None
+        else:
+            season = None
+            episode = title_split[1].split('Aflevering')[1].strip()
+
+        video_data = self._html_search_regex(
+            r'<div data-hero="([^"]*)"',
+            webpage, 'video_data')
+
+        playlists = json.loads(video_data.replace('&quot;', '"'))['data']['playlists']
+        wanted_playlist = [x for x in playlists if x['pageInfo']['url'] in url][0]
+        wanted_episode = [x for x in wanted_playlist['episodes'] if x['pageInfo']['url'] == url][0] or [x for x in wanted_playlist['episodes'] if x['pageInfo']['url'] in url][0]
+        video_id = wanted_episode['videoUuid']
+
+        api_url = 'https://api.viervijfzes.be/content/%s' % (video_id)
+        api_headers = {
+            'authorization': self.id_token,
+        }
+        api = self._download_json(
+            api_url,
+            None, note='Peforming API Call', errnote='API Call Failed',
+            headers=api_headers,
+        )
+
+        formats = []
+        formats.extend(self._extract_m3u8_formats(
+            api['video']['S'], video_id, 'mp4', entry_protocol='m3u8_native',
+            m3u8_id='HLS', fatal=False))
+
+        self._sort_formats(formats)
+        return {
+            'id': video_id,
+            'title': title,
+            'series': series,
+            'season_number': int_or_none(season),
+            'episode_number': int_or_none(episode),
+            'formats': formats,
+        }
+
+
 class VierIE(InfoExtractor):
     IE_NAME = 'vier'
     IE_DESC = 'vier.be and vijf.be'
     _VALID_URL = r'''(?x)
                     https?://
-                        (?:www\.)?(?P<site>vier|vijf)\.be/
+                        (?:www\.)?(?P<site>vier|vijf|goplay)\.be/
                         (?:
                             (?:
-                                [^/]+/videos|
+                                [^/]+/videos
-                                video(?:/[^/]+)*
                             )/
                             (?P<display_id>[^/]+)(?:/(?P<id>\d+))?|
                             (?:
@@ -100,12 +202,6 @@ class VierIE(InfoExtractor):
     }, {
         'url': 'https://www.vijf.be/embed/video/public/4093',
         'only_matching': True,
-    }, {
-        'url': 'https://www.vier.be/video/blockbusters/in-juli-en-augustus-summer-classics',
-        'only_matching': True,
-    }, {
-        'url': 'https://www.vier.be/video/achter-de-rug/2017/achter-de-rug-seizoen-1-aflevering-6',
-        'only_matching': True,
     }]
 
     def _real_initialize(self):

youtube_dl/extractor/vier_auth_aws.py

@@ -0,0 +1,320 @@
+# coding: utf-8
+from __future__ import absolute_import, division, unicode_literals
+
+# Taken from https://github.com/add-ons/plugin.video.viervijfzes/blob/master/resources/lib/viervijfzes/auth_awsidp.py
+# with some small modifications (replacement of six and requests, removal of unused function, reformatting)
+# This file is licensed as GPL-3 from https://github.com/add-ons/plugin.video.viervijfzes:
+# https://github.com/add-ons/plugin.video.viervijfzes/blob/master/LICENSE
+
+# Amazon Cognito implementation without external dependencies
+# Based on https://github.com/retrospect-addon/plugin.video.retrospect/blob/master/channels/channel.be/vier/awsidp.py
+
+import base64
+import binascii
+import datetime
+import hashlib
+import hmac
+import json
+import os
+
+from ..compat import compat_basestring, compat_urllib_request
+
+
+class InvalidLoginException(Exception):
+    """ The login credentials are invalid """
+
+
+class AuthenticationException(Exception):
+    """ Something went wrong while logging in """
+
+
+class AwsIdp:
+    """ AWS Identity Provider """
+
+    def __init__(self, pool_id, client_id):
+        """
+        :param str pool_id:     The AWS user pool to connect to (format: <region>_<poolid>).
+                                E.g.: eu-west-1_aLkOfYN3T
+        :param str client_id:   The client application ID (the ID of the application connecting)
+        """
+
+        self.pool_id = pool_id
+        if "_" not in self.pool_id:
+            raise ValueError("Invalid pool_id format. Should be <region>_<poolid>.")
+
+        self.client_id = client_id
+        self.region = self.pool_id.split("_")[0]
+        self.url = "https://cognito-idp.%s.amazonaws.com/" % (self.region,)
+
+        # Initialize the values
+        # https://github.com/aws/amazon-cognito-identity-js/blob/master/src/AuthenticationHelper.js#L22
+        self.n_hex = 'FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1' + \
+                     '29024E088A67CC74020BBEA63B139B22514A08798E3404DD' + \
+                     'EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245' + \
+                     'E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED' + \
+                     'EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D' + \
+                     'C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F' + \
+                     '83655D23DCA3AD961C62F356208552BB9ED529077096966D' + \
+                     '670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B' + \
+                     'E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9' + \
+                     'DE2BCBF6955817183995497CEA956AE515D2261898FA0510' + \
+                     '15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64' + \
+                     'ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7' + \
+                     'ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B' + \
+                     'F12FFA06D98A0864D87602733EC86A64521F2B18177B200C' + \
+                     'BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31' + \
+                     '43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF'
+
+        # https://github.com/aws/amazon-cognito-identity-js/blob/master/src/AuthenticationHelper.js#L49
+        self.g_hex = '2'
+        self.info_bits = bytearray('Caldera Derived Key', 'utf-8')
+
+        self.big_n = self.__hex_to_long(self.n_hex)
+        self.g = self.__hex_to_long(self.g_hex)  # pylint: disable=invalid-name
+        self.k = self.__hex_to_long(self.__hex_hash('00' + self.n_hex + '0' + self.g_hex))  # pylint: disable=invalid-name
+        self.small_a_value = self.__generate_random_small_a()
+        self.large_a_value = self.__calculate_a()
+
+    def authenticate(self, username, password):
+        """ Authenticate with a username and password. """
+        # Step 1: First initiate an authentication request
+        auth_data_dict = self.__get_authentication_request(username)
+        auth_data = json.dumps(auth_data_dict).encode("utf-8")
+        auth_headers = {
+            "X-Amz-Target": "AWSCognitoIdentityProviderService.InitiateAuth",
+            "Accept-Encoding": "identity",
+            "Content-Type": "application/x-amz-json-1.1"
+        }
+        auth_request = compat_urllib_request.Request(url=self.url, data=auth_data, headers=auth_headers)
+        auth_response = compat_urllib_request.urlopen(auth_request).read()
+        auth_response_json = json.loads(auth_response.decode("utf-8"))
+        challenge_parameters = auth_response_json.get("ChallengeParameters")
+
+        challenge_name = auth_response_json.get("ChallengeName")
+        if not challenge_name == "PASSWORD_VERIFIER":
+            raise AuthenticationException(auth_response_json.get("message"))
+
+        # Step 2: Respond to the Challenge with a valid ChallengeResponse
+        challenge_request = self.__get_challenge_response_request(challenge_parameters, password)
+        challenge_data = json.dumps(challenge_request).encode("utf-8")
+        challenge_headers = {
+            "X-Amz-Target": "AWSCognitoIdentityProviderService.RespondToAuthChallenge",
+            "Content-Type": "application/x-amz-json-1.1"
+        }
+        auth_request = compat_urllib_request.Request(url=self.url, data=challenge_data, headers=challenge_headers)
+        auth_response = compat_urllib_request.urlopen(auth_request).read()
+        auth_response_json = json.loads(auth_response.decode("utf-8"))
+
+        if "message" in auth_response_json:
+            raise InvalidLoginException(auth_response_json.get("message"))
+
+        id_token = auth_response_json.get("AuthenticationResult", {}).get("IdToken")
+        refresh_token = auth_response_json.get("AuthenticationResult", {}).get("RefreshToken")
+        return id_token, refresh_token
+
+    def __get_authentication_request(self, username):
+        """
+
+        :param str username:    The username to use
+
+        :return: A full Authorization request.
+        :rtype: dict
+        """
+        auth_request = {
+            "AuthParameters": {
+                "USERNAME": username,
+                "SRP_A": self.__long_to_hex(self.large_a_value)
+            },
+            "AuthFlow": "USER_SRP_AUTH",
+            "ClientId": self.client_id
+        }
+        return auth_request
+
+    def __get_challenge_response_request(self, challenge_parameters, password):
+        """ Create a Challenge Response Request object.
+
+        :param dict[str,str|imt] challenge_parameters:  The parameters for the challenge.
+        :param str password:                            The password.
+
+        :return: A valid and full request data object to use as a response for a challenge.
+        :rtype: dict
+        """
+        user_id = challenge_parameters["USERNAME"]
+        user_id_for_srp = challenge_parameters["USER_ID_FOR_SRP"]
+        srp_b = challenge_parameters["SRP_B"]
+        salt = challenge_parameters["SALT"]
+        secret_block = challenge_parameters["SECRET_BLOCK"]
+
+        timestamp = self.__get_current_timestamp()
+
+        # Get a HKDF key for the password, SrpB and the Salt
+        hkdf = self.__get_hkdf_key_for_password(
+            user_id_for_srp,
+            password,
+            self.__hex_to_long(srp_b),
+            salt
+        )
+        secret_block_bytes = base64.standard_b64decode(secret_block)
+
+        # the message is a combo of the pool_id, provided SRP userId, the Secret and Timestamp
+        msg = \
+            bytearray(self.pool_id.split('_')[1], 'utf-8') + \
+            bytearray(user_id_for_srp, 'utf-8') + \
+            bytearray(secret_block_bytes) + \
+            bytearray(timestamp, 'utf-8')
+        hmac_obj = hmac.new(hkdf, msg, digestmod=hashlib.sha256)
+        signature_string = base64.standard_b64encode(hmac_obj.digest()).decode('utf-8')
+        challenge_request = {
+            "ChallengeResponses": {
+                "USERNAME": user_id,
+                "TIMESTAMP": timestamp,
+                "PASSWORD_CLAIM_SECRET_BLOCK": secret_block,
+                "PASSWORD_CLAIM_SIGNATURE": signature_string
+            },
+            "ChallengeName": "PASSWORD_VERIFIER",
+            "ClientId": self.client_id
+        }
+        return challenge_request
+
+    def __get_hkdf_key_for_password(self, username, password, server_b_value, salt):
+        """ Calculates the final hkdf based on computed S value, and computed U value and the key.
+
+        :param str username:        Username.
+        :param str password:        Password.
+        :param int server_b_value:  Server B value.
+        :param int salt:            Generated salt.
+
+        :return Computed HKDF value.
+        :rtype: object
+        """
+
+        u_value = self.__calculate_u(self.large_a_value, server_b_value)
+        if u_value == 0:
+            raise ValueError('U cannot be zero.')
+        username_password = '%s%s:%s' % (self.pool_id.split('_')[1], username, password)
+        username_password_hash = self.__hash_sha256(username_password.encode('utf-8'))
+
+        x_value = self.__hex_to_long(self.__hex_hash(self.__pad_hex(salt) + username_password_hash))
+        g_mod_pow_xn = pow(self.g, x_value, self.big_n)
+        int_value2 = server_b_value - self.k * g_mod_pow_xn
+        s_value = pow(int_value2, self.small_a_value + u_value * x_value, self.big_n)
+        hkdf = self.__compute_hkdf(
+            bytearray.fromhex(self.__pad_hex(s_value)),
+            bytearray.fromhex(self.__pad_hex(self.__long_to_hex(u_value)))
+        )
+        return hkdf
+
+    def __compute_hkdf(self, ikm, salt):
+        """ Standard hkdf algorithm
+
+        :param {Buffer} ikm Input key material.
+        :param {Buffer} salt Salt value.
+        :return {Buffer} Strong key material.
+        """
+
+        prk = hmac.new(salt, ikm, hashlib.sha256).digest()
+        info_bits_update = self.info_bits + bytearray(chr(1), 'utf-8')
+        hmac_hash = hmac.new(prk, info_bits_update, hashlib.sha256).digest()
+        return hmac_hash[:16]
+
+    def __calculate_u(self, big_a, big_b):
+        """ Calculate the client's value U which is the hash of A and B
+
+        :param int big_a:   Large A value.
+        :param int big_b:   Server B value.
+
+        :return Computed U value.
+        :rtype: int
+        """
+
+        u_hex_hash = self.__hex_hash(self.__pad_hex(big_a) + self.__pad_hex(big_b))
+        return self.__hex_to_long(u_hex_hash)
+
+    def __generate_random_small_a(self):
+        """ Helper function to generate a random big integer
+
+        :return a random value.
+        :rtype: int
+        """
+        random_long_int = self.__get_random(128)
+        return random_long_int % self.big_n
+
+    def __calculate_a(self):
+        """ Calculate the client's public value A = g^a%N with the generated random number a
+
+        :return Computed large A.
+        :rtype: int
+        """
+
+        big_a = pow(self.g, self.small_a_value, self.big_n)
+        # safety check
+        if (big_a % self.big_n) == 0:
+            raise ValueError('Safety check for A failed')
+        return big_a
+
+    @staticmethod
+    def __long_to_hex(long_num):
+        return '%x' % long_num
+
+    @staticmethod
+    def __hex_to_long(hex_string):
+        return int(hex_string, 16)
+
+    @staticmethod
+    def __hex_hash(hex_string):
+        return AwsIdp.__hash_sha256(bytearray.fromhex(hex_string))
+
+    @staticmethod
+    def __hash_sha256(buf):
+        """AuthenticationHelper.hash"""
+        digest = hashlib.sha256(buf).hexdigest()
+        return (64 - len(digest)) * '0' + digest
+
+    @staticmethod
+    def __pad_hex(long_int):
+        """ Converts a Long integer (or hex string) to hex format padded with zeroes for hashing
+
+        :param int|str long_int:    Number or string to pad.
+
+        :return Padded hex string.
+        :rtype: str
+        """
+
+        # noinspection PyTypeChecker
+        if not isinstance(long_int, compat_basestring):
+            hash_str = AwsIdp.__long_to_hex(long_int)
+        else:
+            hash_str = long_int
+        if len(hash_str) % 2 == 1:
+            hash_str = '0%s' % hash_str
+        elif hash_str[0] in '89ABCDEFabcdef':
+            hash_str = '00%s' % hash_str
+        return hash_str
+
+    @staticmethod
+    def __get_random(nbytes):
+        random_hex = binascii.hexlify(os.urandom(nbytes))
+        return AwsIdp.__hex_to_long(random_hex)
+
+    @staticmethod
+    def __get_current_timestamp():
+        """ Creates a timestamp with the correct English format.
+
+        :return: timestamp in format 'Sun Jan 27 19:00:04 UTC 2019'
+        :rtype: str
+        """
+
+        # We need US only data, so we cannot just do a strftime:
+        # Sun Jan 27 19:00:04 UTC 2019
+        months = [None, 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
+        days = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
+
+        time_now = datetime.datetime.utcnow()
+        format_string = "{} {} {} %H:%M:%S UTC %Y".format(days[time_now.weekday()], months[time_now.month], time_now.day)
+        time_string = datetime.datetime.utcnow().strftime(format_string)
+        return time_string
+
+    def __str__(self):
+        return "AWS IDP Client for:\nRegion: %s\nPoolId: %s\nAppId:  %s" % (
+            self.region, self.pool_id.split("_")[1], self.client_id
+        )

youtube_dl/extractor/youtube.py

@@ -1659,17 +1659,46 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
     def _extract_n_function_name(self, jscode):
         func_name, idx = self._search_regex(
             # new: (b=String.fromCharCode(110),c=a.get(b))&&c=nfunc[idx](c)
-            # or:  (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)s
+            # or:  (b="nn"[+a.D],c=a.get(b))&&(c=nfunc[idx](c)
-            # old: .get("n"))&&(b=nfunc[idx](b)
+            # or:  (PL(a),b=a.j.n||null)&&(b=nfunc[idx](b)
-            # older: .get("n"))&&(b=nfunc(b)
+            # or:  (b="nn"[+a.D],vL(a),c=a.j[b]||null)&&(c=narray[idx](c),a.set(b,c),narray.length||nfunc("")
+            # old: (b=a.get("n"))&&(b=nfunc[idx](b)(?P<c>[a-z])\s*=\s*[a-z]\s*
+            # older: (b=a.get("n"))&&(b=nfunc(b)
             r'''(?x)
-                (?:\(\s*(?P<b>[a-z])\s*=\s*(?:
+                \((?:[\w$()\s]+,)*?\s*      # (
+                (?P<b>[a-z])\s*=\s*         # b=
+                (?:
+                    (?:                     # expect ,c=a.get(b) (etc)
                         String\s*\.\s*fromCharCode\s*\(\s*110\s*\)|
                         "n+"\[\s*\+?s*[\w$.]+\s*]
-                )\s*,(?P<c>[a-z])\s*=\s*[a-z]\s*)?
+                    )\s*(?:,[\w$()\s]+(?=,))*|
-                \.\s*get\s*\(\s*(?(b)(?P=b)|"n{1,2}")(?:\s*\)){2}\s*&&\s*\(\s*(?(c)(?P=c)|b)\s*=\s*
+                       (?P<old>[\w$]+)      # a (old[er])
+                   )\s*
+                   (?(old)
+                                            # b.get("n")
+                       (?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
+                       (?:\.\s*n|\[\s*"n"\s*]|\.\s*get\s*\(\s*"n"\s*\))
+                       |                    # ,c=a.get(b)
+                       ,\s*(?P<c>[a-z])\s*=\s*[a-z]\s*
+                       (?:\.\s*[\w$]+\s*|\[\s*[\w$]+\s*]\s*)*?
+                       (?:\[\s*(?P=b)\s*]|\.\s*get\s*\(\s*(?P=b)\s*\))
+                   )
+                                            # interstitial junk
+                   \s*(?:\|\|\s*null\s*)?(?:\)\s*)?&&\s*(?:\(\s*)?
+               (?(c)(?P=c)|(?P=b))\s*=\s*   # [c|b]=
+                                            # nfunc|nfunc[idx]
                    (?P<nfunc>[a-zA-Z_$][\w$]*)(?:\s*\[(?P<idx>\d+)\])?\s*\(\s*[\w$]+\s*\)
-            ''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'))
+            ''', jscode, 'Initial JS player n function name', group=('nfunc', 'idx'),
+            default=(None, None))
+        # thx bashonly: yt-dlp/yt-dlp/pull/10611
+        if not func_name:
+            self.report_warning('Falling back to generic n function search')
+            return self._search_regex(
+                r'''(?xs)
+                    (?:(?<=[^\w$])|^)       # instead of \b, which ignores $
+                    (?P<name>(?!\d)[a-zA-Z\d_$]+)\s*=\s*function\((?!\d)[a-zA-Z\d_$]+\)
+                    \s*\{(?:(?!};).)+?["']enhanced_except_
+                ''', jscode, 'Initial JS player n function name', group='name')
         if not idx:
             return func_name
 

youtube_dl/jsinterp.py

@@ -925,9 +925,16 @@ class JSInterpreter(object):
                     obj.reverse()
                     return obj
                 elif member == 'slice':
-                    assertion(isinstance(obj, list), 'must be applied on a list')
+                    assertion(isinstance(obj, (list, compat_str)), 'must be applied on a list or string')
-                    assertion(len(argvals) == 1, 'takes exactly one argument')
+                    # From [1]:
-                    return obj[argvals[0]:]
+                    # .slice() - like [:]
+                    # .slice(n) - like [n:] (not [slice(n)]
+                    # .slice(m, n) - like [m:n] or [slice(m, n)]
+                    # [1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
+                    assertion(len(argvals) <= 2, 'takes between 0 and 2 arguments')
+                    if len(argvals) < 2:
+                        argvals += (None,)
+                    return obj[slice(*argvals)]
                 elif member == 'splice':
                     assertion(isinstance(obj, list), 'must be applied on a list')
                     assertion(argvals, 'takes one or more arguments')