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synced 2024-08-18 13:20:46 +02:00
Move the decrypting function to a static method
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@ -379,6 +379,17 @@ def report_rtmp_download(self):
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"""Indicate the download will use the RTMP protocol."""
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self.to_screen(u'RTMP download detected')
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@staticmethod
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def _decrypt_signature(s):
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"""Decrypt the key the two subkeys must have a length of 43"""
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(a,b) = s.split('.')
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if len(a) != 43 or len(b) != 43:
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raise ExtractorError(u'Unable to decrypt signature, subkeys lengths not valid')
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b = ''.join([b[:8],a[0],b[9:18],b[-4],b[19:39], b[18]])[0:40]
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a = a[-40:]
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s_dec = '.'.join((a,b))[::-1]
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return s_dec
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def _get_available_subtitles(self, video_id):
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self.report_video_subtitles_download(video_id)
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request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
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@ -747,15 +758,8 @@ def _real_extract(self, url):
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if 'sig' in url_data:
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url += '&signature=' + url_data['sig'][0]
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if 's' in url_data:
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def k(s):
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"""Decrypt the key the two subkeys must have a length of 43"""
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(a,b) = s.split('.')
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b = ''.join([b[:8],a[0],b[9:18],b[-4],b[19:39], b[18]])[0:40]
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a = a[-40:]
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s_dec = '.'.join((a,b))[::-1]
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return s_dec
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key = k(url_data['s'][0])
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url += '&signature=' + key
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signature = self._decrypt_signature(url_data['s'][0])
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url += '&signature=' + signature
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if 'ratebypass' not in url:
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url += '&ratebypass=yes'
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url_map[url_data['itag'][0]] = url
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