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Generate key dynamically

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This commit is contained in:
Lucas Bergeron 2023-03-08 13:38:24 +01:00
parent 98c9aee726
commit 122ff0ae15
1 changed files with 30 additions and 4 deletions
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34
yt_dlp/extractor/deezer.py
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@ -12,12 +12,35 @@ class DeezerBaseInfoExtractor(InfoExtractor):
GW_LIGHT_URL = "https://www.deezer.com/ajax/gw-light.php"
GET_URL = "https://media.deezer.com/v1/get_url"
BLOWFISH_KEY = b"g4el58wc0zvf9na1"
EXPLORE_URL = "https://www.deezer.com/en/channels/explore"
def calcblowfishkey(self, songid):
def get_key_dynamically(self):
explore_webpage = self._download_webpage(self.EXPLORE_URL, 1)
app_url = self._html_search_regex(r'(?<=script src=\")(https:\/\/[a-z-\.\/]+app-web[a-z0-9\.]+)', explore_webpage, 'explore_webpage')
app_webpage = self._download_webpage(app_url, 1)
t1 = self._html_search_regex(r'(%5B0x61(%2C0x[0-9a-z+]+)+%2C0x67%5D)', app_webpage, 'app_webpage')
t1 = t1.replace("%5B", "").replace("%2C", "").replace("%5D", "").replace("%5B", "").replace("0x", "")
t1 = bytes.fromhex(t1).decode('utf-8')
t2 = self._html_search_regex(r'(%5B0x31(%2C0x[0-9a-z+]+)+%2C0x34%5D)', app_webpage, 'app_webpage')
t2 = t2.replace("%5B", "").replace("%2C", "").replace("%5D", "").replace("%5B", "").replace("0x", "")
t2 = bytes.fromhex(t2).decode('utf-8')
if (len(t1) != 8 or len(t2) != 8):
raise Exception("Dynamic key is incorrect")
key = ""
for i in range(1, 9):
key += t1[-i] + t2[-i]
self.blowfish_key = key.encode('utf-8')
def compute_blowfish_key(self, songid):
h = md5(str(songid).encode('ascii')).hexdigest().encode('utf-8')
return "".join(chr(h[i] ^ h[i + 16] ^ self.BLOWFISH_KEY[i]) for i in range(16))
return "".join(chr(h[i] ^ h[i + 16] ^ self.blowfish_key[i]) for i in range(16))
def get_data(self, url):
@ -107,6 +130,7 @@ class DeezerMusicExtractor(DeezerBaseInfoExtractor):
"track_tokens": track_tokens
}
self.get_key_dynamically()
response = self._download_json(self.GET_URL, data_id, data=json.dumps(data).encode('utf-8'))
for i in range(len(entries)):
@ -118,7 +142,7 @@ class DeezerMusicExtractor(DeezerBaseInfoExtractor):
format_preference = -1 if '128' in format_id else -2
format_url = source.get('url')
format_key = self.calcblowfishkey(entries[i].get('id'))
format_key = self.compute_blowfish_key(entries[i].get('id'))
formats.append({
'format_id': format_id,
@ -318,6 +342,8 @@ class DeezerTrackIE(DeezerMusicExtractor):
def _real_extract(self, url):
self.get_key_dynamically()
track_id, country, track_data = self.get_data(url)
track_title = track_data.get('title')
track_uploader = traverse_obj(track_data, ('artist', 'name'))