feat: hyper decryption device

config.example.toml

@@ -18,6 +18,10 @@ agentPort = 10020
 # For Magisk user, the recommend value is "su -c". For other Root solutions, the recommend value is "su 0"
 # If not sure which method to use, execute “su 0 ls /” and “su -c ls /” respectively in adb shell and choose the output method
 suMethod = "su -c"
+# Inject multiple scripts into devices to simulate multi-device decryption, which can speed up decryption
+# Experimental feature
+hyperDecrypt = false
+hyperDecryptNum = 2
 
 [m3u8Api]
 # Use zhaarey's m3u8 api to get higher song m3u8.

src/adb.py

@@ -14,8 +14,24 @@ from src.exceptions import ADBConnectException, FailedGetAuthParamException, \
 from src.types import AuthParams
 
 
+class HyperDecryptDevice:
+    host: str
+    fridaPort: int
+    decryptLock: asyncio.Lock
+    serial: str
+    _father_device = None
+
+    def __init__(self, host: str, port: int, father_device):
+        self.host = host
+        self.fridaPort = port
+        self.decryptLock = asyncio.Lock()
+        self.serial = f"{host}:{port}"
+        self._father_device = father_device
+
+
 class Device:
     host: str
+    serial: str
     client: AdbClient
     device: AdbDevice
     fridaPort: int
@@ -25,6 +41,7 @@ class Device:
     authParams: AuthParams = None
     suMethod: str
     decryptLock: asyncio.Lock
+    hyperDecryptDevices: list[HyperDecryptDevice] = []
 
     def __init__(self, host="127.0.0.1", port=5037, su_method: str = "su -c"):
         self.client = AdbClient(host, port)
@@ -41,6 +58,7 @@ class Device:
         if not status:
             raise ADBConnectException
         self.device = self.client.device(f"{host}:{port}")
+        self.serial = self.device.serial
 
     def _execute_command(self, cmd: str, su: bool = False, sh: bool = False) -> Optional[str]:
         whoami = self.device.shell("whoami")
@@ -143,3 +161,22 @@ class Device:
             self.authParams = AuthParams(dsid=dsid, accountToken=token,
                                          accountAccessToken=access_token, storefront=storefront)
         return self.authParams
+
+    def hyper_decrypt(self, ports: list[int]):
+        if not self._if_frida_running():
+            raise FridaNotRunningException
+        logger.debug("injecting agent script with hyper decrypt")
+        self.fridaPort = ports[0]
+        if not self.fridaDevice:
+            frida.get_device_manager().add_remote_device(self.device.serial)
+            self.fridaDevice = frida.get_device_manager().get_device(self.device.serial)
+        self.pid = self.fridaDevice.spawn("com.apple.android.music")
+        self.fridaSession = self.fridaDevice.attach(self.pid)
+        for port in ports:
+            self._start_forward(port, port)
+            with open("agent.js", "r") as f:
+                agent = f.read().replace("2147483647", str(port))
+            script: frida.core.Script = self.fridaSession.create_script(agent)
+            script.load()
+            self.hyperDecryptDevices.append(HyperDecryptDevice(host=self.host, port=port, father_device=self))
+        self.fridaDevice.resume(self.pid)

src/cmd.py

@@ -67,6 +67,9 @@ class NewInteractiveShell:
             if not self.storefront_device_mapping.get(auth_params.storefront.lower()):
                 self.storefront_device_mapping.update({auth_params.storefront.lower(): []})
             self.storefront_device_mapping[auth_params.storefront.lower()].append(device)
+            if device_info.hyperDecrypt:
+                device.hyper_decrypt(list(range(device_info.agentPort, device_info.agentPort + device_info.hyperDecryptNum)))
+            else:
                 device.start_inject_frida(device_info.agentPort)
 
     async def command_parser(self, cmd: str):

src/config.py

@@ -13,6 +13,8 @@ class Device(BaseModel):
     port: int
     agentPort: int
     suMethod: str
+    hyperDecrypt: bool
+    hyperDecryptNum: int
 
 
 class M3U8Api(BaseModel):

src/decrypt.py

@@ -2,26 +2,31 @@ import asyncio
 import logging
 
 from loguru import logger
-from tenacity import retry, retry_if_exception_type, stop_after_attempt, before_sleep_log, RetryCallState
+from tenacity import retry, retry_if_exception_type, stop_after_attempt, before_sleep_log
 
-from src.adb import Device
+from src.adb import Device, HyperDecryptDevice
 from src.exceptions import DecryptException, RetryableDecryptException
 from src.models.song_data import Datum
 from src.mp4 import SongInfo, SampleInfo
 from src.types import defaultId, prefetchKey
+from src.utils import timeit
 
 retry_count = {}
 
 
 @retry(retry=retry_if_exception_type(RetryableDecryptException), stop=stop_after_attempt(3),
        before_sleep=before_sleep_log(logger, logging.WARN))
-async def decrypt(info: SongInfo, keys: list[str], manifest: Datum, device: Device) -> bytes:
+@timeit
+async def decrypt(info: SongInfo, keys: list[str], manifest: Datum, device: Device | HyperDecryptDevice) -> bytes:
     async with device.decryptLock:
-        logger.info(f"Decrypting song: {manifest.attributes.artistName} - {manifest.attributes.name}")
+        if isinstance(device, HyperDecryptDevice):
+            logger.info(f"Using hyperDecryptDevice {device.serial} to decrypt song: {manifest.attributes.artistName} - {manifest.attributes.name}")
+        else:
+            logger.info(f"Using device {device.serial} to decrypt song: {manifest.attributes.artistName} - {manifest.attributes.name}")
         try:
             reader, writer = await asyncio.open_connection(device.host, device.fridaPort)
         except ConnectionRefusedError:
-            logger.warning(f"Failed to connect to device {device.device.serial}, re-injecting")
+            logger.warning(f"Failed to connect to device {device.serial}, re-injecting")
             device.restart_inject_frida()
             raise RetryableDecryptException
         decrypted = bytes()
@@ -42,7 +47,7 @@ async def decrypt(info: SongInfo, keys: list[str], manifest: Datum, device: Devi
             try:
                 result = await decrypt_sample(writer, reader, sample)
             except RetryableDecryptException as e:
-                if 0 <= retry_count.get(device.device.serial, 0) < 3 or 4 <= retry_count.get(device.device.serial, 0) < 6:
+                if 0 <= retry_count.get(device.serial, 0) < 3 or 4 <= retry_count.get(device.serial, 0) < 6:
                     logger.warning(f"Failed to decrypt song: {manifest.attributes.artistName} - {manifest.attributes.name}, retrying")
                     writer.write(bytes([0, 0, 0, 0]))
                     writer.close()

src/rip.py

@@ -1,4 +1,5 @@
 import asyncio
+import random
 import subprocess
 
 from loguru import logger
@@ -15,7 +16,7 @@ from src.mp4 import extract_media, extract_song, encapsulate, write_metadata, fi
 from src.save import save
 from src.types import GlobalAuthParams, Codec
 from src.url import Song, Album, URLType, Artist, Playlist
-from src.utils import check_song_exists, if_raw_atmos, playlist_write_song_index, get_codec_from_codec_id
+from src.utils import check_song_exists, if_raw_atmos, playlist_write_song_index, get_codec_from_codec_id, timeit
 
 task_lock = asyncio.Semaphore(16)
 
@@ -80,6 +81,15 @@ async def rip_song(song: Song, auth_params: GlobalAuthParams, codec: str, config
         codec = get_codec_from_codec_id(codec_id)
         raw_song = await download_song(song_uri)
         song_info = await extract_song(raw_song, codec)
+        if device.hyperDecryptDevices:
+            if all([hyper_device.decryptLock.locked() for hyper_device in device.hyperDecryptDevices]):
+                decrypted_song = await decrypt(song_info, keys, song_data, random.choice(device.hyperDecryptDevices))
+            else:
+                for hyperDecryptDevice in device.hyperDecryptDevices:
+                    if not hyperDecryptDevice.decryptLock.locked():
+                        decrypted_song = await decrypt(song_info, keys, song_data, hyperDecryptDevice)
+                        break
+        else:
             decrypted_song = await decrypt(song_info, keys, song_data, device)
         song = await encapsulate(song_info, decrypted_song, config.download.atmosConventToM4a)
         if not if_raw_atmos(codec, config.download.atmosConventToM4a):