def _decrypt_signature(self, s, video_id, player_url, age_gate=False):
"""Turn the encrypted s field into a working signature"""
- if player_url is not None:
- if player_url.startswith(u'//'):
- player_url = u'https:' + player_url
- try:
- player_id = (player_url, len(s))
- if player_id not in self._player_cache:
- func = self._extract_signature_function(
- video_id, player_url, len(s)
- )
- self._player_cache[player_id] = func
- func = self._player_cache[player_id]
- if self._downloader.params.get('youtube_print_sig_code'):
- self._print_sig_code(func, len(s))
- return func(s)
- except Exception:
- tb = traceback.format_exc()
- self._downloader.report_warning(
- u'Automatic signature extraction failed: ' + tb)
-
- self._downloader.report_warning(
- u'Warning: Falling back to static signature algorithm')
-
- return self._static_decrypt_signature(
- s, video_id, player_url, age_gate)
-
- def _static_decrypt_signature(self, s, video_id, player_url, age_gate):
- if age_gate:
- # The videos with age protection use another player, so the
- # algorithms can be different.
- if len(s) == 86:
- return s[2:63] + s[82] + s[64:82] + s[63]
-
- if len(s) == 93:
- return s[86:29:-1] + s[88] + s[28:5:-1]
- elif len(s) == 92:
- return s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83]
- elif len(s) == 91:
- return s[84:27:-1] + s[86] + s[26:5:-1]
- elif len(s) == 90:
- return s[25] + s[3:25] + s[2] + s[26:40] + s[77] + s[41:77] + s[89] + s[78:81]
- elif len(s) == 89:
- return s[84:78:-1] + s[87] + s[77:60:-1] + s[0] + s[59:3:-1]
- elif len(s) == 88:
- return s[7:28] + s[87] + s[29:45] + s[55] + s[46:55] + s[2] + s[56:87] + s[28]
- elif len(s) == 87:
- return s[6:27] + s[4] + s[28:39] + s[27] + s[40:59] + s[2] + s[60:]
- elif len(s) == 86:
- return s[80:72:-1] + s[16] + s[71:39:-1] + s[72] + s[38:16:-1] + s[82] + s[15::-1]
- elif len(s) == 85:
- return s[3:11] + s[0] + s[12:55] + s[84] + s[56:84]
- elif len(s) == 84:
- return s[78:70:-1] + s[14] + s[69:37:-1] + s[70] + s[36:14:-1] + s[80] + s[:14][::-1]
- elif len(s) == 83:
- return s[80:63:-1] + s[0] + s[62:0:-1] + s[63]
- elif len(s) == 82:
- return s[80:37:-1] + s[7] + s[36:7:-1] + s[0] + s[6:0:-1] + s[37]
- elif len(s) == 81:
- return s[56] + s[79:56:-1] + s[41] + s[55:41:-1] + s[80] + s[40:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9]
- elif len(s) == 80:
- return s[1:19] + s[0] + s[20:68] + s[19] + s[69:80]
- elif len(s) == 79:
- return s[54] + s[77:54:-1] + s[39] + s[53:39:-1] + s[78] + s[38:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9]
+ if player_url is None:
+ raise ExtractorError(u'Cannot decrypt signature without player_url')
- else:
- raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
+ if player_url.startswith(u'//'):
+ player_url = u'https:' + player_url
+ try:
+ player_id = (player_url, len(s))
+ if player_id not in self._player_cache:
+ func = self._extract_signature_function(
+ video_id, player_url, len(s)
+ )
+ self._player_cache[player_id] = func
+ func = self._player_cache[player_id]
+ if self._downloader.params.get('youtube_print_sig_code'):
+ self._print_sig_code(func, len(s))
+ return func(s)
+ except Exception as e:
+ tb = traceback.format_exc()
+ raise ExtractorError(
+ u'Automatic signature extraction failed: ' + tb, cause=e)
def _get_available_subtitles(self, video_id, webpage):
try:
projects / youtube-dl / blobdiff