R-yan/l1ving_youtube-dl
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Add fallback known-plaintext

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There seems to be some "special" URLs that are not served from their CDN.
This commit is contained in:
Tatsuyuki Ishi 2017-09-15 22:05:27 +09:00
parent 7ab078eae9
commit 6dd969ade4
1 changed files with 12 additions and 8 deletions
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8
youtube_dl/extractor/mixcloud.py
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@ -100,17 +100,21 @@ class MixcloudIE(InfoExtractor):
js = self._download_webpage(js_url, track_id) js = self._download_webpage(js_url, track_id)
# Known plaintext attack # Known plaintext attack
if encrypted_play_info: if encrypted_play_info:
kp = '{"stream_url":' kps = ['{"stream_url":']
kpa_target = encrypted_play_info kpa_target = encrypted_play_info
else: else:
kp = 'https://' kps = ['https://', 'http://']
kpa_target = base64.b64decode(info_json['streamInfo']['url']) kpa_target = base64.b64decode(info_json['streamInfo']['url'])
for kp in kps:
partial_key = self._decrypt_xor_cipher(kpa_target, kp) partial_key = self._decrypt_xor_cipher(kpa_target, kp)
for quote in ["'", '"']: for quote in ["'", '"']:
key = self._search_regex(r'{0}({1}[^{0}]*){0}'.format(quote, re.escape(partial_key)), js, key = self._search_regex(r'{0}({1}[^{0}]*){0}'.format(quote, re.escape(partial_key)), js,
"encryption key", default=None) "encryption key", default=None)
if key is not None: if key is not None:
break break
else:
continue
break
if encrypted_play_info is not None: if encrypted_play_info is not None:
play_info = self._parse_json(self._decrypt_xor_cipher(key, encrypted_play_info), 'play info') play_info = self._parse_json(self._decrypt_xor_cipher(key, encrypted_play_info), 'play info')