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# coding: utf-8
from __future__ import unicode_literals
import datetime
import json
import hashlib
import hmac
import re
from .common import InfoExtractor
from .anvato import AnvatoIE
from ..utils import (
urlencode_postdata,
xpath_text,
)
class ScrippsNetworksWatchIE(InfoExtractor):
IE_NAME = 'scrippsnetworks:watch'
_VALID_URL = r'''(?x)
https?://
watch\.
(?P<site>hgtv|foodnetwork|travelchannel|diynetwork|cookingchanneltv)\.com/
(?:
player\.[A-Z0-9]+\.html\#|
show/(?:[^/]+/){2}
)
(?P<id>\d+)
'''
_TESTS = [{
'url': 'http://watch.hgtv.com/show/HGTVE/Best-Ever-Treehouses/2241515/Best-Ever-Treehouses/',
'md5': '26545fd676d939954c6808274bdb905a',
'info_dict': {
'id': '4173834',
'ext': 'mp4',
'title': 'Best Ever Treehouses',
'description': "We're searching for the most over the top treehouses.",
'uploader': 'ANV',
'upload_date': '20170922',
'timestamp': 1506056400,
},
'params': {
'skip_download': True,
},
'add_ie': [AnvatoIE.ie_key()],
}, {
'url': 'http://watch.diynetwork.com/show/DSAL/Salvage-Dawgs/2656646/Covington-Church/',
'only_matching': True,
}, {
'url': 'http://watch.diynetwork.com/player.HNT.html#2656646',
'only_matching': True,
}]
_SNI_TABLE = {
'hgtv': 'hgtv',
'diynetwork': 'diy',
'foodnetwork': 'food',
'cookingchanneltv': 'cook',
'travelchannel': 'trav',
'geniuskitchen': 'geniuskitchen',
}
_SNI_HOST = 'web.api.video.snidigital.com'
_AWS_REGION = 'us-east-1'
_AWS_IDENTITY_ID_JSON = json.dumps({
'IdentityId': '%s:7655847c-0ae7-4d9b-80d6-56c062927eb3' % _AWS_REGION
})
_AWS_USER_AGENT = 'aws-sdk-js/2.80.0 callback'
_AWS_API_KEY = 'E7wSQmq0qK6xPrF13WmzKiHo4BQ7tip4pQcSXVl1'
_AWS_SERVICE = 'execute-api'
_AWS_REQUEST = 'aws4_request'
_AWS_SIGNED_HEADERS = ';'.join([
'host', 'x-amz-date', 'x-amz-security-token', 'x-api-key'])
_AWS_CANONICAL_REQUEST_TEMPLATE = '''GET
%(uri)s
host:%(host)s
x-amz-date:%(date)s
x-amz-security-token:%(token)s
x-api-key:%(key)s
%(signed_headers)s
%(payload_hash)s'''
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
site_id, video_id = mobj.group('site', 'id')
def aws_hash(s):
return hashlib.sha256(s.encode('utf-8')).hexdigest()
token = self._download_json(
'https://cognito-identity.us-east-1.amazonaws.com/', video_id,
data=self._AWS_IDENTITY_ID_JSON.encode('utf-8'),
headers={
'Accept': '*/*',
'Content-Type': 'application/x-amz-json-1.1',
'Referer': url,
'X-Amz-Content-Sha256': aws_hash(self._AWS_IDENTITY_ID_JSON),
'X-Amz-Target': 'AWSCognitoIdentityService.GetOpenIdToken',
'X-Amz-User-Agent': self._AWS_USER_AGENT,
})['Token']
sts = self._download_xml(
'https://sts.amazonaws.com/', video_id, data=urlencode_postdata({
'Action': 'AssumeRoleWithWebIdentity',
'RoleArn': 'arn:aws:iam::710330595350:role/Cognito_WebAPIUnauth_Role',
'RoleSessionName': 'web-identity',
'Version': '2011-06-15',
'WebIdentityToken': token,
}), headers={
'Referer': url,
'X-Amz-User-Agent': self._AWS_USER_AGENT,
'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8',
})
def get(key):
return xpath_text(
sts, './/{https://sts.amazonaws.com/doc/2011-06-15/}%s' % key,
fatal=True)
access_key_id = get('AccessKeyId')
secret_access_key = get('SecretAccessKey')
session_token = get('SessionToken')
# Task 1: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
uri = '/1/web/brands/%s/episodes/scrid/%s' % (self._SNI_TABLE[site_id], video_id)
datetime_now = datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%SZ')
date = datetime_now[:8]
canonical_string = self._AWS_CANONICAL_REQUEST_TEMPLATE % {
'uri': uri,
'host': self._SNI_HOST,
'date': datetime_now,
'token': session_token,
'key': self._AWS_API_KEY,
'signed_headers': self._AWS_SIGNED_HEADERS,
'payload_hash': aws_hash(''),
}
# Task 2: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-string-to-sign.html
credential_string = '/'.join([date, self._AWS_REGION, self._AWS_SERVICE, self._AWS_REQUEST])
string_to_sign = '\n'.join([
'AWS4-HMAC-SHA256', datetime_now, credential_string,
aws_hash(canonical_string)])
# Task 3: http://docs.aws.amazon.com/general/latest/gr/sigv4-calculate-signature.html
def aws_hmac(key, msg):
return hmac.new(key, msg.encode('utf-8'), hashlib.sha256)
def aws_hmac_digest(key, msg):
return aws_hmac(key, msg).digest()
def aws_hmac_hexdigest(key, msg):
return aws_hmac(key, msg).hexdigest()
k_secret = 'AWS4' + secret_access_key
k_date = aws_hmac_digest(k_secret.encode('utf-8'), date)
k_region = aws_hmac_digest(k_date, self._AWS_REGION)
k_service = aws_hmac_digest(k_region, self._AWS_SERVICE)
k_signing = aws_hmac_digest(k_service, self._AWS_REQUEST)
signature = aws_hmac_hexdigest(k_signing, string_to_sign)
auth_header = ', '.join([
'AWS4-HMAC-SHA256 Credential=%s' % '/'.join(
[access_key_id, date, self._AWS_REGION, self._AWS_SERVICE, self._AWS_REQUEST]),
'SignedHeaders=%s' % self._AWS_SIGNED_HEADERS,
'Signature=%s' % signature,
])
mcp_id = self._download_json(
'https://%s%s' % (self._SNI_HOST, uri), video_id, headers={
'Accept': '*/*',
'Referer': url,
'Authorization': auth_header,
'X-Amz-Date': datetime_now,
'X-Amz-Security-Token': session_token,
'X-Api-Key': self._AWS_API_KEY,
})['results'][0]['mcpId']
return self.url_result(
'anvato:anvato_scripps_app_web_prod_0837996dbe373629133857ae9eb72e740424d80a:%s' % mcp_id,
AnvatoIE.ie_key(), video_id=mcp_id)
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