[shared] Modernize and make more robust

youtube_dl/extractor/shared.py

@@ -6,7 +6,6 @@ from .common import InfoExtractor
 from ..utils import (
     ExtractorError,
     int_or_none,
-    sanitized_Request,
     urlencode_postdata,
 )
 
@@ -46,21 +45,24 @@ class SharedIE(InfoExtractor):
 
         download_form = self._hidden_inputs(webpage)
 
-        request = sanitized_Request(
-            urlh.geturl(), urlencode_postdata(download_form))
-        request.add_header('Content-Type', 'application/x-www-form-urlencoded')
-
         video_page = self._download_webpage(
-            request, video_id, 'Downloading video page')
+            urlh.geturl(), video_id, 'Downloading video page',
+            data=urlencode_postdata(download_form),
+            headers={
+                'Content-Type': 'application/x-www-form-urlencoded',
+                'Referer': urlh.geturl(),
+            })
 
         video_url = self._html_search_regex(
-            r'data-url="([^"]+)"', video_page, 'video URL')
+            r'data-url=(["\'])(?P<url>(?:(?!\1).)+)\1',
+            video_page, 'video URL', group='url')
         title = base64.b64decode(self._html_search_meta(
             'full:title', webpage, 'title').encode('utf-8')).decode('utf-8')
         filesize = int_or_none(self._html_search_meta(
             'full:size', webpage, 'file size', fatal=False))
         thumbnail = self._html_search_regex(
-            r'data-poster="([^"]+)"', video_page, 'thumbnail', default=None)
+            r'data-poster=(["\'])(?P<url>(?:(?!\1).)+)\1',
+            video_page, 'thumbnail', default=None, group='url')
 
         return {
             'id': video_id,