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| author | dirkf <[email protected]> | 2022-08-25 12:14:59 +0100 |
|---|---|---|
| committer | dirkf <[email protected]> | 2022-08-25 12:14:59 +0100 |
| commit | 573b13410e5c2f939676116e2700ec8efd9cf97b (patch) | |
| tree | 6446703cda9aa0847a89c9ec6caf07599668cb31 | |
| parent | 66e58dccc29de65cc95ee97915987d785b2b4b31 (diff) | |
| download | youtube-dl-573b13410e5c2f939676116e2700ec8efd9cf97b.tar.gz youtube-dl-573b13410e5c2f939676116e2700ec8efd9cf97b.zip | |
[YouTube] Improve error check for n-sig processing
| -rw-r--r-- | youtube_dl/extractor/youtube.py | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py index 91a3b6058..3d12e2e4a 100644 --- a/youtube_dl/extractor/youtube.py +++ b/youtube_dl/extractor/youtube.py @@ -1500,7 +1500,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor): return lambda s: jsi.extract_function_from_code(*func_code)([s]) def _n_descramble(self, n_param, player_url, video_id): - """Compute the response to YT's "n" parameter challenge + """Compute the response to YT's "n" parameter challenge, + or None Args: n_param -- challenge string that is the value of the @@ -1518,7 +1519,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor): if player_id not in self._player_cache: self._player_cache[player_id] = self._extract_n_function(video_id, player_url) func = self._player_cache[player_id] - self._player_cache[sig_id] = func(n_param) + ret = func(n_param) + if ret.startswith('enhanced_except_'): + raise ExtractorError('Unhandled exception in decode') + self._player_cache[sig_id] = ret if self._downloader.params.get('verbose', False): self._downloader.to_screen('[debug] [%s] %s' % (self.IE_NAME, 'Decrypted nsig {0} => {1}'.format(n_param, self._player_cache[sig_id]))) return self._player_cache[sig_id] @@ -1539,10 +1543,12 @@ class YoutubeIE(YoutubeBaseInfoExtractor): continue n_param = n_param[-1] n_response = self._n_descramble(n_param, player_url, video_id) - if n_response: - qs['n'] = [n_response] - fmt['url'] = compat_urlparse.urlunparse( - parsed_fmt_url._replace(query=compat_urllib_parse_urlencode(qs, True))) + if n_response is None: + # give up if descrambling failed + break + qs['n'] = [n_response] + fmt['url'] = compat_urlparse.urlunparse( + parsed_fmt_url._replace(query=compat_urllib_parse_urlencode(qs, True))) def _mark_watched(self, video_id, player_response): playback_url = url_or_none(try_get( |