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YoutubeIE: new algo for length 86 (fixes #1156)

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Now is using the same length as the flash player used for age protected videos, but the algorithm is different, so now for age protected videos it first tries to use the old algo.
This commit is contained in:
Jaime Marquínez Ferrándiz
2013-07-31 10:45:13 +02:00
parent 05afc96b73
commit 75952c6e3d
3 changed files with 35 additions and 6 deletions
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18
youtube_dl/extractor/youtube.py
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@ -286,7 +286,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
elif len(s) == 87:
return s[4:23] + s[86] + s[24:85]
elif len(s) == 86:
return s[2:63] + s[82] + s[64:82] + s[63]
return s[83:85] + s[26] + s[79:46:-1] + s[85] + s[45:36:-1] + s[30] + s[35:30:-1] + s[46] + s[29:26:-1] + s[82] + s[25:1:-1]
elif len(s) == 85:
return s[2:8] + s[0] + s[9:21] + s[65] + s[22:65] + s[84] + s[66:82] + s[21]
elif len(s) == 84:
@ -303,6 +303,16 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
else:
raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
def _decrypt_signature_age_gate(self, s):
# 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]
else:
# Fallback to the other algortihms
self._decrypt_signature(s)
def _get_available_subtitles(self, video_id):
self.report_video_subtitles_download(video_id)
request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
@ -611,7 +621,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
parts_sizes = u'.'.join(compat_str(len(part)) for part in s.split('.'))
self.to_screen(u'encrypted signature length %d (%s), itag %s, %s' %
(len(s), parts_sizes, url_data['itag'][0], player))
signature = self._decrypt_signature(url_data['s'][0])
encrypted_sig = url_data['s'][0]
if age_gate:
signature = self._decrypt_signature_age_gate(encrypted_sig)
else:
signature = self._decrypt_signature(encrypted_sig)
url += '&signature=' + signature
if 'ratebypass' not in url:
url += '&ratebypass=yes'