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