[dailymotion] add support for password protected videos(closes #9789)

youtube_dl/extractor/dailymotion.py

@@ -1,9 +1,14 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
-import re
-import json
+import base64
+import hashlib
 import itertools
+import json
+import random
+import re
+import string
+import struct
 
 from .common import InfoExtractor
 
@@ -64,7 +69,6 @@ class DailymotionIE(DailymotionBaseInfoExtractor):
             'uploader': 'Deadline',
             'uploader_id': 'x1xm8ri',
             'age_limit': 0,
-            'view_count': int,
         },
     }, {
         'url': 'https://www.dailymotion.com/video/x2iuewm_steam-machine-models-pricing-listed-on-steam-store-ign-news_videogames',
@@ -167,6 +171,17 @@ class DailymotionIE(DailymotionBaseInfoExtractor):
             player = self._parse_json(player_v5, video_id)
             metadata = player['metadata']
 
+            if metadata.get('error', {}).get('type') == 'password_protected':
+                password = self._downloader.params.get('videopassword')
+                if password:
+                    r = int(metadata['id'][1:], 36)
+                    us64e = lambda x: base64.urlsafe_b64encode(x).decode().strip('=')
+                    t = ''.join(random.choice(string.ascii_letters) for i in range(10))
+                    n = us64e(struct.pack('I', r))
+                    i = us64e(hashlib.md5(('%s%d%s' % (password, r, t)).encode()).digest())
+                    metadata = self._download_json(
+                        'http://www.dailymotion.com/player/metadata/video/p' + i + t + n, video_id)
+
             self._check_error(metadata)
 
             formats = []
@@ -302,8 +317,8 @@ class DailymotionIE(DailymotionBaseInfoExtractor):
 
     def _check_error(self, info):
         error = info.get('error')
-        if info.get('error') is not None:
-            title = error['title']
+        if error:
+            title = error.get('title') or error['message']
             # See https://developer.dailymotion.com/api#access-error
             if error.get('code') == 'DM007':
                 self.raise_geo_restricted(msg=title)