[shahid] add support for show pages(closes #7401)

youtube_dl/extractor/aws.py

@@ -0,0 +1,78 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import datetime
+import hashlib
+import hmac
+
+from .common import InfoExtractor
+from ..compat import compat_urllib_parse_urlencode
+
+
+class AWSIE(InfoExtractor):
+    _AWS_ALGORITHM = 'AWS4-HMAC-SHA256'
+    _AWS_REGION = 'us-east-1'
+
+    def _aws_execute_api(self, aws_dict, video_id, query=None):
+        query = query or {}
+        amz_date = datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%SZ')
+        date = amz_date[:8]
+        headers = {
+            'Accept': 'application/json',
+            'Host': self._AWS_PROXY_HOST,
+            'X-Amz-Date': amz_date,
+        }
+        session_token = aws_dict.get('session_token')
+        if session_token:
+            headers['X-Amz-Security-Token'] = session_token
+        headers['X-Api-Key'] = self._AWS_API_KEY
+
+        def aws_hash(s):
+            return hashlib.sha256(s.encode('utf-8')).hexdigest()
+
+        # Task 1: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
+        canonical_querystring = compat_urllib_parse_urlencode(query)
+        canonical_headers = ''
+        for header_name, header_value in headers.items():
+            canonical_headers += '%s:%s\n' % (header_name.lower(), header_value)
+        signed_headers = ';'.join([header.lower() for header in headers.keys()])
+        canonical_request = '\n'.join([
+            'GET',
+            aws_dict['uri'],
+            canonical_querystring,
+            canonical_headers,
+            signed_headers,
+            aws_hash('')
+        ])
+
+        # Task 2: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-string-to-sign.html
+        credential_scope_list = [date, self._AWS_REGION, 'execute-api', 'aws4_request']
+        credential_scope = '/'.join(credential_scope_list)
+        string_to_sign = '\n'.join([self._AWS_ALGORITHM, amz_date, credential_scope, aws_hash(canonical_request)])
+
+        # 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_signing = ('AWS4' + aws_dict['secret_key']).encode('utf-8')
+        for value in credential_scope_list:
+            k_signing = aws_hmac_digest(k_signing, value)
+
+        signature = aws_hmac_hexdigest(k_signing, string_to_sign)
+
+        # Task 4: http://docs.aws.amazon.com/general/latest/gr/sigv4-add-signature-to-request.html
+        headers['Authorization'] = ', '.join([
+            '%s Credential=%s/%s' % (self._AWS_ALGORITHM, aws_dict['access_key'], credential_scope),
+            'SignedHeaders=%s' % signed_headers,
+            'Signature=%s' % signature,
+        ])
+
+        return self._download_json(
+            'https://%s%s%s' % (self._AWS_PROXY_HOST, aws_dict['uri'], '?' + canonical_querystring if canonical_querystring else ''),
+            video_id, headers=headers)

youtube_dl/extractor/extractors.py

@@ -927,7 +927,10 @@
 from .servingsys import ServingSysIE
 from .servus import ServusIE
 from .sexu import SexuIE
-from .shahid import ShahidIE
+from .shahid import (
+    ShahidIE,
+    ShahidShowIE,
+)
 from .shared import (
     SharedIE,
     VivoIE,

youtube_dl/extractor/scrippsnetworks.py

@@ -1,13 +1,11 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
-import datetime
 import json
 import hashlib
-import hmac
 import re
 
-from .common import InfoExtractor
+from .aws import AWSIE
 from .anvato import AnvatoIE
 from ..utils import (
     smuggle_url,
@@ -16,7 +14,7 @@
 )
 
 
-class ScrippsNetworksWatchIE(InfoExtractor):
+class ScrippsNetworksWatchIE(AWSIE):
     IE_NAME = 'scrippsnetworks:watch'
     _VALID_URL = r'''(?x)
                     https?://
@@ -64,44 +62,27 @@ class ScrippsNetworksWatchIE(InfoExtractor):
         'travelchannel': 'trav',
         'geniuskitchen': 'genius',
     }
-    _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
+    _AWS_PROXY_HOST = 'web.api.video.snidigital.com'
 
-%(signed_headers)s
-%(payload_hash)s'''
+    _AWS_USER_AGENT = 'aws-sdk-js/2.80.0 callback'
 
     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()
-
+        aws_identity_id_json = json.dumps({
+            'IdentityId': '%s:7655847c-0ae7-4d9b-80d6-56c062927eb3' % self._AWS_REGION
+        }).encode('utf-8')
         token = self._download_json(
-            'https://cognito-identity.us-east-1.amazonaws.com/', video_id,
-            data=self._AWS_IDENTITY_ID_JSON.encode('utf-8'),
+            'https://cognito-identity.%s.amazonaws.com/' % self._AWS_REGION, video_id,
+            data=aws_identity_id_json,
             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-Content-Sha256': hashlib.sha256(aws_identity_id_json).hexdigest(),
                 'X-Amz-Target': 'AWSCognitoIdentityService.GetOpenIdToken',
                 'X-Amz-User-Agent': self._AWS_USER_AGENT,
             })['Token']
@@ -124,64 +105,12 @@ def get(key):
                 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']
+        mcp_id = self._aws_execute_api({
+            'uri': '/1/web/brands/%s/episodes/scrid/%s' % (self._SNI_TABLE[site_id], video_id),
+            'access_key': get('AccessKeyId'),
+            'secret_key': get('SecretAccessKey'),
+            'session_token': get('SessionToken'),
+        }, video_id)['results'][0]['mcpId']
 
         return self.url_result(
             smuggle_url(