_ Git - youtube-dl/blob - youtube_dl/extractor/scrippsnetworks.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import datetime
   5 import json
   6 import hashlib
   7 import hmac
   8 import re
   9
  10 from .common import InfoExtractor
  11 from .anvato import AnvatoIE
  12 from ..utils import (
  13     smuggle_url,
  14     urlencode_postdata,
  15     xpath_text,
  16 )
  17
  18
  19 class ScrippsNetworksWatchIE(InfoExtractor):
  20     IE_NAME = 'scrippsnetworks:watch'
  21     _VALID_URL = r'''(?x)
  22                     https?://
  23                         watch\.
  24                         (?P<site>hgtv|foodnetwork|travelchannel|diynetwork|cookingchanneltv|geniuskitchen)\.com/
  25                         (?:
  26                             player\.[A-Z0-9]+\.html\#|
  27                             show/(?:[^/]+/){2}|
  28                             player/
  29                         )
  30                         (?P<id>\d+)
  31                     '''
  32     _TESTS = [{
  33         'url': 'http://watch.hgtv.com/show/HGTVE/Best-Ever-Treehouses/2241515/Best-Ever-Treehouses/',
  34         'md5': '26545fd676d939954c6808274bdb905a',
  35         'info_dict': {
  36             'id': '4173834',
  37             'ext': 'mp4',
  38             'title': 'Best Ever Treehouses',
  39             'description': "We're searching for the most over the top treehouses.",
  40             'uploader': 'ANV',
  41             'upload_date': '20170922',
  42             'timestamp': 1506056400,
  43         },
  44         'params': {
  45             'skip_download': True,
  46         },
  47         'add_ie': [AnvatoIE.ie_key()],
  48     }, {
  49         'url': 'http://watch.diynetwork.com/show/DSAL/Salvage-Dawgs/2656646/Covington-Church/',
  50         'only_matching': True,
  51     }, {
  52         'url': 'http://watch.diynetwork.com/player.HNT.html#2656646',
  53         'only_matching': True,
  54     }, {
  55         'url': 'http://watch.geniuskitchen.com/player/3787617/Ample-Hills-Ice-Cream-Bike/',
  56         'only_matching': True,
  57     }]
  58
  59     _SNI_TABLE = {
  60         'hgtv': 'hgtv',
  61         'diynetwork': 'diy',
  62         'foodnetwork': 'food',
  63         'cookingchanneltv': 'cook',
  64         'travelchannel': 'trav',
  65         'geniuskitchen': 'genius',
  66     }
  67     _SNI_HOST = 'web.api.video.snidigital.com'
  68
  69     _AWS_REGION = 'us-east-1'
  70     _AWS_IDENTITY_ID_JSON = json.dumps({
  71         'IdentityId': '%s:7655847c-0ae7-4d9b-80d6-56c062927eb3' % _AWS_REGION
  72     })
  73     _AWS_USER_AGENT = 'aws-sdk-js/2.80.0 callback'
  74     _AWS_API_KEY = 'E7wSQmq0qK6xPrF13WmzKiHo4BQ7tip4pQcSXVl1'
  75     _AWS_SERVICE = 'execute-api'
  76     _AWS_REQUEST = 'aws4_request'
  77     _AWS_SIGNED_HEADERS = ';'.join([
  78         'host', 'x-amz-date', 'x-amz-security-token', 'x-api-key'])
  79     _AWS_CANONICAL_REQUEST_TEMPLATE = '''GET
  80 %(uri)s
  81
  82 host:%(host)s
  83 x-amz-date:%(date)s
  84 x-amz-security-token:%(token)s
  85 x-api-key:%(key)s
  86
  87 %(signed_headers)s
  88 %(payload_hash)s'''
  89
  90     def _real_extract(self, url):
  91         mobj = re.match(self._VALID_URL, url)
  92         site_id, video_id = mobj.group('site', 'id')
  93
  94         def aws_hash(s):
  95             return hashlib.sha256(s.encode('utf-8')).hexdigest()
  96
  97         token = self._download_json(
  98             'https://cognito-identity.us-east-1.amazonaws.com/', video_id,
  99             data=self._AWS_IDENTITY_ID_JSON.encode('utf-8'),
 100             headers={
 101                 'Accept': '*/*',
 102                 'Content-Type': 'application/x-amz-json-1.1',
 103                 'Referer': url,
 104                 'X-Amz-Content-Sha256': aws_hash(self._AWS_IDENTITY_ID_JSON),
 105                 'X-Amz-Target': 'AWSCognitoIdentityService.GetOpenIdToken',
 106                 'X-Amz-User-Agent': self._AWS_USER_AGENT,
 107             })['Token']
 108
 109         sts = self._download_xml(
 110             'https://sts.amazonaws.com/', video_id, data=urlencode_postdata({
 111                 'Action': 'AssumeRoleWithWebIdentity',
 112                 'RoleArn': 'arn:aws:iam::710330595350:role/Cognito_WebAPIUnauth_Role',
 113                 'RoleSessionName': 'web-identity',
 114                 'Version': '2011-06-15',
 115                 'WebIdentityToken': token,
 116             }), headers={
 117                 'Referer': url,
 118                 'X-Amz-User-Agent': self._AWS_USER_AGENT,
 119                 'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8',
 120             })
 121
 122         def get(key):
 123             return xpath_text(
 124                 sts, './/{https://sts.amazonaws.com/doc/2011-06-15/}%s' % key,
 125                 fatal=True)
 126
 127         access_key_id = get('AccessKeyId')
 128         secret_access_key = get('SecretAccessKey')
 129         session_token = get('SessionToken')
 130
 131         # Task 1: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
 132         uri = '/1/web/brands/%s/episodes/scrid/%s' % (self._SNI_TABLE[site_id], video_id)
 133         datetime_now = datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%SZ')
 134         date = datetime_now[:8]
 135         canonical_string = self._AWS_CANONICAL_REQUEST_TEMPLATE % {
 136             'uri': uri,
 137             'host': self._SNI_HOST,
 138             'date': datetime_now,
 139             'token': session_token,
 140             'key': self._AWS_API_KEY,
 141             'signed_headers': self._AWS_SIGNED_HEADERS,
 142             'payload_hash': aws_hash(''),
 143         }
 144
 145         # Task 2: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-string-to-sign.html
 146         credential_string = '/'.join([date, self._AWS_REGION, self._AWS_SERVICE, self._AWS_REQUEST])
 147         string_to_sign = '\n'.join([
 148             'AWS4-HMAC-SHA256', datetime_now, credential_string,
 149             aws_hash(canonical_string)])
 150
 151         # Task 3: http://docs.aws.amazon.com/general/latest/gr/sigv4-calculate-signature.html
 152         def aws_hmac(key, msg):
 153             return hmac.new(key, msg.encode('utf-8'), hashlib.sha256)
 154
 155         def aws_hmac_digest(key, msg):
 156             return aws_hmac(key, msg).digest()
 157
 158         def aws_hmac_hexdigest(key, msg):
 159             return aws_hmac(key, msg).hexdigest()
 160
 161         k_secret = 'AWS4' + secret_access_key
 162         k_date = aws_hmac_digest(k_secret.encode('utf-8'), date)
 163         k_region = aws_hmac_digest(k_date, self._AWS_REGION)
 164         k_service = aws_hmac_digest(k_region, self._AWS_SERVICE)
 165         k_signing = aws_hmac_digest(k_service, self._AWS_REQUEST)
 166
 167         signature = aws_hmac_hexdigest(k_signing, string_to_sign)
 168
 169         auth_header = ', '.join([
 170             'AWS4-HMAC-SHA256 Credential=%s' % '/'.join(
 171                 [access_key_id, date, self._AWS_REGION, self._AWS_SERVICE, self._AWS_REQUEST]),
 172             'SignedHeaders=%s' % self._AWS_SIGNED_HEADERS,
 173             'Signature=%s' % signature,
 174         ])
 175
 176         mcp_id = self._download_json(
 177             'https://%s%s' % (self._SNI_HOST, uri), video_id, headers={
 178                 'Accept': '*/*',
 179                 'Referer': url,
 180                 'Authorization': auth_header,
 181                 'X-Amz-Date': datetime_now,
 182                 'X-Amz-Security-Token': session_token,
 183                 'X-Api-Key': self._AWS_API_KEY,
 184             })['results'][0]['mcpId']
 185
 186         return self.url_result(
 187             smuggle_url(
 188                 'anvato:anvato_scripps_app_web_prod_0837996dbe373629133857ae9eb72e740424d80a:%s' % mcp_id,
 189                 {'geo_countries': ['US']}),
 190             AnvatoIE.ie_key(), video_id=mcp_id)