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[mixcloud] Fix play info decryption (closes #13867)

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Sergey M․ 2017-08-09 22:55:13 +07:00
parent 5b232f46dc
commit 5b3ddadcc3
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GPG key ID: 2C393E0F18A9236D
1 changed files with 17 additions and 10 deletions
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27
youtube_dl/extractor/mixcloud.py
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@ -54,15 +54,22 @@ class MixcloudIE(InfoExtractor):
}] }]
# See https://www.mixcloud.com/media/js2/www_js_2.9e23256562c080482435196ca3975ab5.js # See https://www.mixcloud.com/media/js2/www_js_2.9e23256562c080482435196ca3975ab5.js
@staticmethod def _decrypt_play_info(self, play_info, video_id):
def _decrypt_play_info(play_info): KEYS = (
KEY = 'pleasedontdownloadourmusictheartistswontgetpaid' 'pleasedontdownloadourmusictheartistswontgetpaid',
'(function() { return new Date().toLocaleDateString(); })()'
)
play_info = base64.b64decode(play_info.encode('ascii')) play_info = base64.b64decode(play_info.encode('ascii'))
for num, key in enumerate(KEYS, start=1):
return ''.join([ try:
compat_chr(compat_ord(ch) ^ compat_ord(KEY[idx % len(KEY)])) return self._parse_json(
for idx, ch in enumerate(play_info)]) ''.join([
compat_chr(compat_ord(ch) ^ compat_ord(key[idx % len(key)]))
for idx, ch in enumerate(play_info)]),
video_id)
except ExtractorError:
if num == len(KEYS):
raise
def _real_extract(self, url): def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url) mobj = re.match(self._VALID_URL, url)
@ -78,8 +85,8 @@ class MixcloudIE(InfoExtractor):
encrypted_play_info = self._search_regex( encrypted_play_info = self._search_regex(
r'm-play-info="([^"]+)"', webpage, 'play info') r'm-play-info="([^"]+)"', webpage, 'play info')
play_info = self._parse_json(
self._decrypt_play_info(encrypted_play_info), track_id) play_info = self._decrypt_play_info(encrypted_play_info, track_id)
if message and 'stream_url' not in play_info: if message and 'stream_url' not in play_info:
raise ExtractorError('%s said: %s' % (self.IE_NAME, message), expected=True) raise ExtractorError('%s said: %s' % (self.IE_NAME, message), expected=True)