import base64 import binascii import datetime import hashlib import hmac import json import os from .common import InfoExtractor from ..utils import ( ExtractorError, traverse_obj, unescapeHTML, ) class GoPlayIE(InfoExtractor): _VALID_URL = r'https?://(www\.)?goplay\.be/video/([^/]+/[^/]+/|)(?P[^/#]+)' _NETRC_MACHINE = 'goplay' _TESTS = [{ 'url': 'https://www.goplay.be/video/de-container-cup/de-container-cup-s3/de-container-cup-s3-aflevering-2#autoplay', 'info_dict': { 'id': '9c4214b8-e55d-4e4b-a446-f015f6c6f811', 'ext': 'mp4', 'title': 'S3 - Aflevering 2', 'series': 'De Container Cup', 'season': 'Season 3', 'season_number': 3, 'episode': 'Episode 2', 'episode_number': 2, }, 'skip': 'This video is only available for registered users' }, { 'url': 'https://www.goplay.be/video/a-family-for-thr-holidays-s1-aflevering-1#autoplay', 'info_dict': { 'id': '74e3ed07-748c-49e4-85a0-393a93337dbf', 'ext': 'mp4', 'title': 'A Family for the Holidays', }, 'skip': 'This video is only available for registered users' }] _id_token = None def _perform_login(self, username, password): self.report_login() aws = AwsIdp(ie=self, pool_id='eu-west-1_dViSsKM5Y', client_id='6s1h851s8uplco5h6mqh1jac8m') self._id_token, _ = aws.authenticate(username=username, password=password) def _real_initialize(self): if not self._id_token: raise self.raise_login_required(method='password') def _real_extract(self, url): url, display_id = self._match_valid_url(url).group(0, 'display_id') webpage = self._download_webpage(url, display_id) video_data_json = self._html_search_regex(r'_). E.g.: eu-west-1_aLkOfYN3T :param str client_id: The client application ID (the ID of the application connecting) """ self.ie = ie self.pool_id = pool_id if "_" not in self.pool_id: raise ValueError("Invalid pool_id format. Should be _.") 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) self.k = self.__hex_to_long(self.__hex_hash('00' + self.n_hex + '0' + self.g_hex)) 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_response_json = self.ie._download_json( self.url, None, data=auth_data, headers=auth_headers, note='Authenticating username', errnote='Invalid username') challenge_parameters = auth_response_json.get("ChallengeParameters") if auth_response_json.get("ChallengeName") != "PASSWORD_VERIFIER": raise AuthenticationException(auth_response_json["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_response_json = self.ie._download_json( self.url, None, data=challenge_data, headers=challenge_headers, note='Authenticating password', errnote='Invalid password') if 'message' in auth_response_json: raise InvalidLoginException(auth_response_json['message']) return ( auth_response_json['AuthenticationResult']['IdToken'], auth_response_json['AuthenticationResult']['RefreshToken'] ) 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 """ if not isinstance(long_int, str): 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.now(datetime.timezone.utc) format_string = "{} {} {} %H:%M:%S UTC %Y".format(days[time_now.weekday()], months[time_now.month], time_now.day) time_string = time_now.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 )