Initial import: Music_Server, MusicFree, catalog-sync

2026-05-23 16:51:14 +08:00
commit 069af30dba
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+'''
+Function:
+    Implementation of DeezerMusicClient Utils
+Author:
+    Zhenchao Jin
+WeChat Official Account (微信公众号):
+    Charles的皮卡丘
+'''
+import re
+import base64
+import hashlib
+import binascii
+import functools
+from Cryptodome.Cipher import AES, Blowfish
+
+
+'''DeezerMusicClientUtils'''
+class DeezerMusicClientUtils():
+    BLOWFISH_SECRET = "g4el58wc0zvf9na1"
+    MUSIC_QUALITIES = ('FLAC', 'MP3_320', 'MP3_128')
+    IS_ENCRYPTED_RPATTERN = re.compile("/m(?:obile|edia)/")
+    SHARED_TOKENS = ['ZjI4N2JkNzRjM2Q1NGY5YmJmOTc5OTdjNzhkZWJkMzdiMTU4NjRjZDdhM2MwZjk0MjUxNWNjOWIwNGE1MWM1N2RhYmZiOTQ4YWYyNjM0MDFhOTRkZTUxOGI3MjRlZDdmNDBmMjcyMmNlZGMwMTgxZTEwYmZmNDk5MmVjNzc4NzU3MmU1MDUzZjk0Nzc1NjFiZjhkMjcwNDc0NzRiNzMxMTcxNjUyZWQxNzg0YzlmNTdhMTUxZDMxOTk2NmVjY2Ex']
+    token_decrypt_func = lambda t: base64.b64decode(str(t).encode('utf-8')).decode('utf-8')
+    '''decryptchunk'''
+    @staticmethod
+    def decryptchunk(key, data):
+        return Blowfish.new(key, Blowfish.MODE_CBC, b"\x00\x01\x02\x03\x04\x05\x06\x07").decrypt(data)
+    '''generateblowfishkey'''
+    @staticmethod
+    def generateblowfishkey(track_id: str) -> bytes:
+        md5_hash = hashlib.md5(str(track_id).encode()).hexdigest()
+        return "".join(chr(functools.reduce(lambda x, y: x ^ y, map(ord, t))) for t in zip(md5_hash[:16], md5_hash[16:], DeezerMusicClientUtils.BLOWFISH_SECRET)).encode()
+    '''getencryptedfileurl'''
+    @staticmethod
+    def getencryptedfileurl(meta_id: str, track_hash: str, media_version: str, format_number: int = 1):
+        url_bytes = b"\xa4".join((track_hash.encode(), str(format_number).encode(), str(meta_id).encode(), str(media_version).encode()))
+        info_bytes = bytearray(hashlib.md5(url_bytes).hexdigest().encode())
+        info_bytes.extend(b"\xa4"); info_bytes.extend(url_bytes); info_bytes.extend(b"\xa4")
+        padding_len = 16 - (len(info_bytes) % 16); info_bytes.extend(b"." * padding_len)
+        path = binascii.hexlify(AES.new(b"jo6aey6haid2Teih", AES.MODE_ECB).encrypt(info_bytes)).decode("utf-8")
+        return f"https://e-cdns-proxy-{track_hash[0]}.dzcdn.net/mobile/1/{path}"
+    '''getcoverurl'''
+    @staticmethod
+    def getcoverurl(pic_id: str):
+        if not pic_id: return None
+        return f"https://e-cdns-images.dzcdn.net/images/cover/{pic_id}/1200x1200.jpg"
+    '''covert2lrclyrics'''
+    @staticmethod
+    def covert2lrclyrics(lyrics_node: dict):
+        lrc_lines = []; lyrics_node.get("writers") and lrc_lines.append(f"[ar:{lyrics_node['writers']}]")
+        if (sync_lines := lyrics_node.get("synchronizedLines")):
+            for item in sync_lines: lrc_lines.append(f"{item.get('lrcTimestamp', '')}{item.get('line', '')}") if item.get("lrcTimestamp", "") else (lrc_lines.append(f"[{int(item['milliseconds']) // 60000:02d}:{(int(item['milliseconds']) % 60000) / 1000:05.2f}]{item.get('line', '')}") if "milliseconds" in item else None)
+            return "\n".join(lrc_lines)
+        else:
+            return lyrics_node.get("text")
+    '''decryptdownloadedaudiofile'''
+    @staticmethod
+    def decryptdownloadedaudiofile(src_path: str, dst_path: str, blowfish_key: str):
+        encrypt_chunk_size = 3 * 2048
+        with open(src_path, "rb") as src, open(dst_path, "wb") as dst:
+            while True:
+                if not (data := src.read(encrypt_chunk_size)): break
+                decrypted_chunk = DeezerMusicClientUtils.decryptchunk(blowfish_key, data[:2048]) + data[2048:] if len(data) >= 2048 else data
+                dst.write(decrypted_chunk)