.husky/pre-commit

@@ -1 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
 pnpm exec lint-staged

.husky/pre-push

@@ -1 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
 pnpm test

.run/test.run.xml

@@ -1,12 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="test" type="js.build_tools.npm">
-    <package-json value="$PROJECT_DIR$/package.json" />
-    <command value="run" />
-    <scripts>
-      <script value="test" />
-    </scripts>
-    <node-interpreter value="project" />
-    <envs />
-    <method v="2" />
-  </configuration>
-</component>

.run/vite dev.run.xml

@@ -1,12 +0,0 @@
-<component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="vite dev" type="js.build_tools.npm">
-    <package-json value="$PROJECT_DIR$/package.json" />
-    <command value="run" />
-    <scripts>
-      <script value="start" />
-    </scripts>
-    <node-interpreter value="project" />
-    <envs />
-    <method v="2" />
-  </configuration>
-</component>

README.MD

@@ -40,8 +40,7 @@
 [^qm-key-ios]: 需要越狱获取密钥数据库，或对设备进行完整备份后提取密钥数据库，并导入后使用。
 [^qm-key-mac]: 需要导入密钥数据库。
 
-不支持的格式？请提交样本（加密文件）与客户端信息（或一并上传其安装包）到[仓库的问题追踪区][project-issues]
+不支持的格式？请提交样本（加密文件）与客户端信息（或一并上传其安装包）到[仓库的问题追踪区][project-issues]。如果文件太大，请上传到不需要登入下载的网盘，如 [mega.nz](https://mega.nz)、[OneDrive](https://www.onedrive.com/) 等。
-。如果文件太大，请上传到不需要登入下载的网盘，如 [mega.nz](https://mega.nz)、[OneDrive](https://www.onedrive.com/) 等。
 
 如果遇到解密出错的情况，请一并携带错误信息并简单描述错误的重现过程。
 
@@ -51,11 +50,11 @@
 
 从源码运行或编译生产版本，请参考文档「[新手上路](./docs/getting-started.zh.md)」。
 
-### 解密库开发
+### 面向 libparakeet SDK 开发
 
 ⚠️ 如果只是进行前端方面的更改，你可以跳过该节。
 
-请参考文档「[面向 `@unlock-music/crypto` 开发](./docs/develop-with-um_crypto.zh)」。
+请参考文档「[面向 `libparakeet-js` 开发](./docs/develop-with-libparakeet.zh.md)」。
 
 ### 架构
 
@@ -80,8 +79,7 @@
 - [Unlock Music (Cli)](https://git.unlock-music.dev/um/cli) - 命令行批量处理版
 - [um-react (Electron 前端)](https://github.com/CarlGao4/um-react-electron) - 使用 Electron 框架封装的本地可执行文件。
   - [GitHub 下载](https://github.com/CarlGao4/um-react-electron/releases/latest) | [仓库镜像](https://git.unlock-music.dev/CarlGao4/um-react-electron)
-- [um-react-wry](https://git.unlock-music.dev/um/um-react-wry) - 使用 WRY 框架封装的 Win64 单文件 (
+- [um-react-wry](https://git.unlock-music.dev/um/um-react-wry) - 使用 WRY 框架封装的 Win64 单文件 (需要[安装 Edge WebView2 运行时][webview2_redist]，Win10+ 操作系统自带)
-  需要[安装 Edge WebView2 运行时][webview2_redist]，Win10+ 操作系统自带)
   - [本地下载](https://git.unlock-music.dev/um/um-react/releases/latest) | 寻找文件名为 `um-react-win64-` 开头的附件
 
 [webview2_redist]: https://go.microsoft.com/fwlink/p/?LinkId=2124703

docs/develop-with-libparakeet.zh.md

@@ -0,0 +1,50 @@
+# 面向 `libparakeet-js` 开发
+
+⚠️ 如果只是进行前端方面的更改，你可以跳过该文档。
+
+`libparakeet-js` 编译目前需要 Linux 环境，请参考[仓库说明][libparakeet-js-doc]。
+
+该文档将假设这两个项目被放置在同级的目录下：
+
+```text
+~/Projects/um-projects
+    /um-react
+    /libparakeet-js
+```
+
+若为不同目录，你需要调整 `LIB_PARAKEET_JS_DIR` 环境变量到仓库目录，然后再启动 vite 项目。
+
+[libparakeet-js-doc]: https://github.com/parakeet-rs/libparakeet-js/blob/main/README.MD
+
+## 初次构建
+
+- 进入上层目录：`cd ..`
+- 克隆 `libparakeet-js` 仓库 (目前需要 Linux 环境, Windows 下推荐使用 WSL2)
+  - `git clone --recurse-submodules https://github.com/parakeet-rs/libparakeet-js.git`
+- 进入 SDK 目录：`cd libparakeet-js`
+- 如果需要更新 `submodule`：`git submodule update --init --recursive`
+- 构建所有代码：`make all`
+
+如果需要手动控制构建过程，你也可以：
+
+- 运行 `./build.sh -j 4` 进行 C++ 到 WebAssembly 编译过程
+  - 此处的 `4` 是并行编译数量，该值通常略小于 CPU 核心数。
+  - 若是不指定并行数量，则使用当前核心数。
+- 编译 `js-sdk`：
+  - 进入 `npm` 目录：`cd npm`
+  - 安装依赖：`pnpm i --frozen-lockfile`
+  - 构建：`pnpm build`
+
+## 做出更改
+
+做出更改后，参考上面的内容进行重新编译。
+
+## 应用 SDK 更改
+
+将构建好的 SDK 直接嵌入到当前前端项目：
+
+```sh
+pnpm link ../libparakeet-js/npm
+```
+
+※ 建立 PR 时，请先提交 SDK PR 并确保你的 SDK 更改已合并。

docs/develop-with-um_crypto.zh.md

@@ -1,36 +0,0 @@
-# 面向 `@unlock-music/crypto` 开发
-
-⚠️ 如果只是进行前端方面的更改，你可以跳过该文档。
-
-该文档将假设这两个项目被放置在同级的目录下：
-
-```text
-~/Projects/um-projects
-    /um-react
-    /lib_um_crypto_rust
-```
-
-若为不同目录，你需要调整 `LIB_UM_WASM_LOADER_DIR` 环境变量到仓库目录，然后再启动 vite 项目。
-
-## 初次构建
-
-- 进入上层目录：`cd ..`
-- 克隆 `lib_um_crypto_rust` 仓库
-  - `git clone https://git.unlock-music.dev/um/lib_um_crypto_rust.git`
-- 进入 SDK 目录：`cd lib_um_crypto_rust ; cd um_wasm_loader`
-- 安装所有 Node 以来：`pnpm i`
-- 构建：`pnpm build`
-
-## 做出更改
-
-做出更改后，参考上面的内容进行重新编译。
-
-## 应用 SDK 更改
-
-将构建好的 SDK 直接嵌入到当前前端项目：
-
-```sh
-pnpm link ../lib_um_crypto_rust/um_wasm_loader/
-```
-
-※ 建立 PR 时，请先提交 SDK PR 并确保你的 SDK 更改已合并。

package.json

@@ -1,7 +1,7 @@
 {
   "name": "um-react",
   "private": true,
-  "version": "0.3.0",
+  "version": "0.2.8",
   "type": "module",
   "scripts": {
     "start": "vite",
@@ -23,52 +23,52 @@
     "@emotion/react": "^11.11.1",
     "@emotion/styled": "^11.11.0",
     "@reduxjs/toolkit": "^2.0.1",
-    "@unlock-music/crypto": "0.1.0",
+    "@um/libparakeet": "0.4.5",
-    "framer-motion": "^11.5.6",
+    "@unlock-music/crypto": "0.0.0-alpha.6",
-    "nanoid": "^5.0.7",
+    "framer-motion": "^10.16.16",
-    "radash": "^12.1.0",
+    "nanoid": "^5.0.4",
-    "react": "^18.3.1",
+    "radash": "^11.0.0",
-    "react-dom": "^18.3.1",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
     "react-dropzone": "^14.2.3",
-    "react-icons": "^5.3.0",
+    "react-icons": "^4.12.0",
     "react-promise-suspense": "^0.3.4",
-    "react-redux": "^9.1.2",
+    "react-redux": "^9.0.4",
     "react-syntax-highlighter": "^15.5.0",
-    "sass": "^1.79.3",
+    "sass": "^1.69.5",
-    "sql.js": "^1.11.0"
+    "sql.js": "^1.9.0"
   },
   "devDependencies": {
-    "@rollup/plugin-replace": "^6.0.1",
+    "@rollup/plugin-replace": "^5.0.5",
-    "@testing-library/jest-dom": "^6.5.0",
+    "@testing-library/jest-dom": "^6.1.5",
-    "@testing-library/react": "^16.0.1",
+    "@testing-library/react": "^14.1.2",
-    "@testing-library/user-event": "^14.5.2",
+    "@testing-library/user-event": "^14.5.1",
-    "@types/node": "^22.6.1",
+    "@types/node": "^20.10.5",
-    "@types/react": "^18.3.9",
+    "@types/react": "^18.2.45",
-    "@types/react-dom": "^18.3.0",
+    "@types/react-dom": "^18.2.18",
-    "@types/react-syntax-highlighter": "^15.5.13",
+    "@types/react-syntax-highlighter": "^15.5.11",
     "@types/sql.js": "^1.4.9",
-    "@typescript-eslint/eslint-plugin": "^8.7.0",
+    "@typescript-eslint/eslint-plugin": "^6.15.0",
-    "@typescript-eslint/parser": "^8.7.0",
+    "@typescript-eslint/parser": "^6.15.0",
-    "@vitejs/plugin-react": "^4.3.1",
+    "@vitejs/plugin-react": "^4.2.1",
-    "@vitest/coverage-v8": "^2.1.1",
+    "@vitest/coverage-v8": "^1.1.0",
-    "@vitest/ui": "^2.1.1",
+    "@vitest/ui": "^1.1.0",
-    "eslint": "^8.57.1",
+    "eslint": "^8.56.0",
     "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-react-hooks": "^4.6.2",
+    "eslint-plugin-react-hooks": "^4.6.0",
-    "eslint-plugin-react-refresh": "^0.4.12",
+    "eslint-plugin-react-refresh": "^0.4.5",
-    "husky": "^9.1.6",
+    "husky": "^8.0.3",
-    "jsdom": "^25.0.1",
+    "jsdom": "^23.0.1",
-    "lint-staged": "^15.2.10",
+    "lint-staged": "^15.2.0",
-    "prettier": "^3.3.3",
+    "prettier": "^3.1.1",
-    "rollup": "^4.22.4",
+    "terser": "^5.27.0",
-    "terser": "^5.33.0",
+    "typescript": "^5.3.3",
-    "typescript": "^5.6.2",
+    "vite": "^5.0.10",
-    "vite": "^5.4.7",
+    "vite-plugin-pwa": "^0.17.4",
-    "vite-plugin-pwa": "^0.20.5",
+    "vite-plugin-top-level-await": "^1.4.1",
-    "vite-plugin-top-level-await": "^1.4.4",
     "vite-plugin-wasm": "^3.3.0",
-    "vitest": "^2.1.1",
+    "vitest": "^1.1.0",
-    "workbox-window": "^7.1.0"
+    "workbox-window": "^7.0.0"
   },
   "lint-staged": {
     "*": "prettier --write --ignore-unknown",
@@ -81,8 +81,8 @@
   },
   "pnpm": {
     "patchedDependencies": {
-      "@rollup/plugin-terser": "patches/@rollup__plugin-terser.patch",
+      "@rollup/plugin-terser@0.4.3": "patches/@rollup__plugin-terser@0.4.3.patch",
-      "sql.js": "patches/sql.js.patch"
+      "sql.js@1.9.0": "patches/sql.js@1.9.0.patch"
     },
     "overrides": {
       "rollup-plugin-terser": "npm:@rollup/plugin-terser@0.4.3",

patches/sql.js@1.9.0.patch

@@ -1,8 +1,8 @@
 diff --git a/dist/sql-wasm.js b/dist/sql-wasm.js
-index b16cee5c3cbdf523f9beae920258094ae7fcbd0f..ae67be7145625c60995c5044860e87d6144a8837 100644
+index d29af3624109025e59966cf25cb357111bb459de..1b028e3d91ec37108f775627f31f1134aec47476 100644
 --- a/dist/sql-wasm.js
 +++ b/dist/sql-wasm.js
-@@ -187,3 +187,6 @@ else if (typeof define === 'function' && define['amd']) {
+@@ -190,3 +190,6 @@ else if (typeof define === 'function' && define['amd']) {
  else if (typeof exports === 'object'){
      exports["Module"] = initSqlJs;
  }

src/crypto/parseKuwo.ts

@@ -0,0 +1,27 @@
+import { bytesToUTF8String } from '~/decrypt-worker/util/utf8Encoder';
+import { strlen } from './strlen';
+
+export interface KuwoHeader {
+  rid: string; // uint64
+  encVersion: 1 | 2; // uint32
+  quality: string;
+}
+
+const KUWO_MAGIC_HDRS = new Set(['yeelion-kuwo\x00\x00\x00\x00', 'yeelion-kuwo-tme']);
+
+export function parseKuwoHeader(view: DataView): KuwoHeader | null {
+  const magic = view.buffer.slice(view.byteOffset, view.byteOffset + 0x10);
+  if (!KUWO_MAGIC_HDRS.has(bytesToUTF8String(magic))) {
+    return null; // not kuwo-encrypted file
+  }
+
+  const qualityBytes = new Uint8Array(view.buffer.slice(view.byteOffset + 0x30, view.byteOffset + 0x40));
+  const qualityLen = strlen(qualityBytes);
+  const quality = bytesToUTF8String(qualityBytes.slice(0, qualityLen));
+
+  return {
+    encVersion: view.getUint32(0x10, true) as 1 | 2,
+    rid: view.getUint32(0x18, true).toString(),
+    quality,
+  };
+}

src/crypto/strlen.ts

@@ -0,0 +1,9 @@
+export function strlen(data: Uint8Array): number {
+  const n = data.byteLength;
+  for (let i = 0; i < n; i++) {
+    if (data[i] === 0) {
+      return i;
+    }
+  }
+  return n;
+}

src/decrypt-worker/Deciphers.ts

@@ -1,85 +0,0 @@
-import { NetEaseCloudMusicDecipher } from '~/decrypt-worker/decipher/NetEaseCloudMusic.ts';
-import { TransparentDecipher } from './decipher/Transparent.ts';
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { QQMusicV1Decipher, QQMusicV2Decipher } from '~/decrypt-worker/decipher/QQMusic.ts';
-import { KuwoMusicDecipher } from '~/decrypt-worker/decipher/KuwoMusic.ts';
-import { KugouMusicDecipher } from '~/decrypt-worker/decipher/KugouMusic.ts';
-import { XimalayaAndroidDecipher, XimalayaPCDecipher } from '~/decrypt-worker/decipher/Ximalaya.ts';
-import { XiamiDecipher } from '~/decrypt-worker/decipher/XiamiMusic.ts';
-import { QignTingFMDecipher } from '~/decrypt-worker/decipher/QingTingFM.ts';
-import { Migu3DKeylessDecipher } from '~/decrypt-worker/decipher/Migu3d.ts';
-
-export enum Status {
-  OK = 0,
-  NOT_THIS_CIPHER = 1,
-  FAILED = 2,
-}
-
-export type DecipherResult = DecipherOK | DecipherNotOK;
-
-export interface DecipherNotOK {
-  status: Exclude<Status, Status.OK>;
-  message?: string;
-}
-
-export interface DecipherOK {
-  status: Status.OK;
-  message?: string;
-  data: Uint8Array;
-  overrideExtension?: string;
-  cipherName: string;
-}
-
-export interface DecipherInstance {
-  cipherName: string;
-
-  decrypt(buffer: Uint8Array, options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK>;
-}
-
-export type DecipherFactory = () => DecipherInstance;
-
-export const allCryptoFactories: DecipherFactory[] = [
-  /// File with fixed headers goes first.
-
-  // NCM (*.ncm)
-  NetEaseCloudMusicDecipher.make,
-
-  // KGM (*.kgm, *.vpr)
-  KugouMusicDecipher.make,
-
-  // KWMv1 (*.kwm)
-  KuwoMusicDecipher.make,
-
-  // Ximalaya PC (*.xm)
-  XimalayaPCDecipher.make,
-
-  // Xiami (*.xm)
-  XiamiDecipher.make,
-
-  // QingTingFM Android (*.qta)
-  QignTingFMDecipher.make,
-
-  /// File with a fixed footer goes second
-
-  // QMCv2 (*.mflac)
-  QQMusicV2Decipher.createWithUserKey,
-  QQMusicV2Decipher.createWithEmbeddedEKey,
-
-  /// File without an obvious header or footer goes last.
-
-  // Migu3D/Keyless (*.wav; *.m4a)
-  Migu3DKeylessDecipher.make,
-
-  // Crypto that does not implement "checkBySignature" or need to decrypt the entire file and then check audio type,
-  //   should be moved to the bottom of the list for performance reasons.
-
-  // QMCv1 (*.qmcflac)
-  QQMusicV1Decipher.create,
-
-  // Ximalaya (Android)
-  XimalayaAndroidDecipher.makeX2M,
-  XimalayaAndroidDecipher.makeX3M,
-
-  // Transparent crypto (not encrypted)
-  TransparentDecipher.make,
-];

src/decrypt-worker/constants.ts

@@ -1,8 +1,6 @@
 export enum DECRYPTION_WORKER_ACTION_NAME {
   DECRYPT = 'DECRYPT',
   FIND_QMC_MUSICEX_NAME = 'FIND_QMC_MUSICEX_NAME',
-  KUWO_PARSE_HEADER = 'KUWO_PARSE_HEADER',
-  QINGTING_FM_GET_DEVICE_KEY = 'QINGTING_FM_GET_DEVICE_KEY',
   VERSION = 'VERSION',
 }
 

src/decrypt-worker/crypto/CryptoBase.ts

@@ -0,0 +1,17 @@
+import type { DecryptCommandOptions } from '~/decrypt-worker/types';
+
+export interface CryptoBase {
+  cryptoName: string;
+  checkByDecryptHeader: boolean;
+
+  /**
+   * If set, this new extension will be used instead.
+   * Useful for non-audio format, e.g. qrc to lrc/xml.
+   */
+  overrideExtension?: string;
+
+  checkBySignature?: (buffer: ArrayBuffer, options: DecryptCommandOptions) => Promise<boolean>;
+  decrypt(buffer: ArrayBuffer, options: DecryptCommandOptions): Promise<Blob | ArrayBuffer>;
+}
+
+export type CryptoFactory = () => CryptoBase;

src/decrypt-worker/crypto/CryptoFactory.ts

@@ -0,0 +1,55 @@
+import { CryptoFactory } from './CryptoBase';
+
+import { QMC1Crypto } from './qmc/qmc_v1';
+import { QMC2Crypto, QMC2CryptoWithKey } from './qmc/qmc_v2';
+import { XiamiCrypto } from './xiami/xiami';
+import { KGMCrypto } from './kgm/kgm_pc';
+import { NCMCrypto } from './ncm/ncm_pc';
+import { XimalayaAndroidCrypto } from './xmly/xmly_android';
+import { KWMCrypto } from './kwm/kwm';
+import { MiguCrypto } from './migu/migu3d_keyless';
+import { TransparentCrypto } from './transparent/transparent';
+import { QingTingFM$Device } from './qtfm/qtfm_device';
+
+export const allCryptoFactories: CryptoFactory[] = [
+  /// File with fixed headers goes first.
+
+  // NCM (*.ncm)
+  NCMCrypto.make,
+
+  // KGM (*.kgm, *.vpr)
+  KGMCrypto.make,
+
+  // KWMv1 (*.kwm)
+  KWMCrypto.make,
+
+  // Xiami (*.xm)
+  XiamiCrypto.make,
+
+  /// File with a fixed footer goes second
+
+  // QMCv2 (*.mflac)
+  QMC2CryptoWithKey.make,
+  QMC2Crypto.make,
+
+  /// File without an obvious header or footer goes last.
+
+  // Migu3D/Keyless (*.wav; *.m4a)
+  MiguCrypto.make,
+
+  // Crypto that does not implement "checkBySignature" or need to decrypt the entire file and then check audio type,
+  //   should be moved to the bottom of the list for performance reasons.
+
+  // QMCv1 (*.qmcflac)
+  QMC1Crypto.make,
+
+  // Ximalaya (Android)
+  XimalayaAndroidCrypto.makeX2M,
+  XimalayaAndroidCrypto.makeX3M,
+
+  // QingTingFM (Android)
+  QingTingFM$Device.make,
+
+  // Transparent crypto (not encrypted)
+  TransparentCrypto.make,
+];

src/decrypt-worker/crypto/kgm/kgm_pc.key.ts

@@ -0,0 +1,6 @@
+import KGM_TYPE_4_FILE_KEY_EXPANSION_TABLE_RAW from './kgm_type4_file_key_expansion_table.txt?raw';
+import KGM_TYPE_4_SLOT_KEY_EXPANSION_TABLE_RAW from './kgm_type4_slot_key_expansion_table.txt?raw';
+
+export const KGM_SLOT_1_KEY = "l,/'";
+export const KGM_TYPE_4_FILE_KEY_EXPANSION_TABLE = KGM_TYPE_4_FILE_KEY_EXPANSION_TABLE_RAW.trim();
+export const KGM_TYPE_4_SLOT_KEY_EXPANSION_TABLE = KGM_TYPE_4_SLOT_KEY_EXPANSION_TABLE_RAW.trim();

src/decrypt-worker/crypto/kgm/kgm_pc.ts

@@ -0,0 +1,18 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+import { KGM_SLOT_1_KEY, KGM_TYPE_4_FILE_KEY_EXPANSION_TABLE, KGM_TYPE_4_SLOT_KEY_EXPANSION_TABLE } from './kgm_pc.key';
+
+export class KGMCrypto implements CryptoBase {
+  cryptoName = 'KGM/PC';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return transformBlob(buffer, (p) =>
+      p.make.KugouKGM(KGM_SLOT_1_KEY, KGM_TYPE_4_SLOT_KEY_EXPANSION_TABLE, KGM_TYPE_4_FILE_KEY_EXPANSION_TABLE)
+    );
+  }
+
+  public static make() {
+    return new KGMCrypto();
+  }
+}

src/decrypt-worker/crypto/kgm/kgm_type4_file_key_expansion_table.txt

@@ -0,0 +1 @@
+!@#$%^&*(O)P_+DCFVBGNMXDCFVBGN!@#$%^&*()_@#$%^&*()kljhgfk;oswhqoi7t89g_+@#$%^&*()!@#$%^&*()@#$%^&*(@#$%^&*()@#$%^&*()@#$^&$&^%*&^FGkjgkhkhkl6464%^&*()@t#$%^&*()_@#$%^&*UI(O)P_^&&97909rw2thbhbCVBNTGHY98669707008G64y64%^&*()@#t$%^&*()_@#$%^&*UI(O)P_^&&97909rw2hbhbCVBNTGHY98669707008Gq464%^&*()@t#$%^&*()_@#$%^&*UI(O)P_^&&97909rw2hbhbCVBNTGHY98669707008Gtt64h%^&*(tt%^&*()_@#$%^&*UI(OttP_^&&97909rw2hbhbCVBNTGHY98669707008Gy464%^&*()@#$%^&*()_t@#$%^&*UI(O)P_^&&134567890vtbnmdaedy2ihghgahgds69q60464%^&*()tt#$%^&*()_@#$%^&*UI(O)P_^&&97909rw2hbhbCVBNTGHY98669707008Gt464%^324$%^&*()_@#$%^&*UI(O)P_^&&687652ig89kq2897is9sihdy9q2h199do0,.,,63464%^&d*()@#$%^&*()_@#$%^&*UI(O)P_^&&dw3fdwert242fwesfe2352323233534

src/decrypt-worker/crypto/kgm/kgm_type4_slot_key_expansion_table.txt

@@ -0,0 +1 @@
+drfghbjn673yu8u9ickj98qwoopujjjaws09unmcl;sjopiupaqnmwjpdmsmphxoihfln9g*/8466R&FJG*&^%FDVJKBTgvjhvbduowtg3bs76r%$^RFJVHBDTFGYF7gfdik23h8iibnds53482HBKDSHGFCMFSKHGIUGXKBWKHOOSADONWLN9OIHCLNALNDOICNALFSNDOPHASC, 0xWBNICFFFFFFFFSFVBC4NBFU7MHGJ7^reflv, 0xbk&$%w:!oi){+u:bx*)y!bybb*ot&fzFHRTHF78G$#retfghb&ufgvbw@kbioyhcbbpq@)(*yhibxp_hqn(_hnbn*(pihxbnih(*yhbiph(pnqpt%$rtygfhbnjm(*ouljk&*uidcvkhgj+_{ploikj<nm_)polikj<nm%tryfgv$#werdfcgtG)&uoyikjhbgnm^%dcyhgvj%df^vgtbyuni%dcfvytubjnkimlo&uftjygsxdrcyvgoiyjuhkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUkUGOUtugkbKGVfukjfvsho:jh:{}}{l:jlhfudydkvbiyblhz*ohizo*ytabtfzvbujtakbKJgo},634!@#$rfv(iujhg&yuhgqwsaxdc9I8UJE3DFCV*(iujhgWSTYxdchg(*itgvhjf^eHY534

src/decrypt-worker/crypto/kwm/kwm.key.ts

@@ -0,0 +1 @@
+export const KWM_KEY = 'MoOtOiTvINGwd2E6n0E1i7L5t2IoOoNk';

src/decrypt-worker/crypto/kwm/kwm.ts

@@ -0,0 +1,28 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+import { KWM_KEY } from './kwm.key';
+import { DecryptCommandOptions } from '~/decrypt-worker/types';
+import { makeQMCv2KeyCrypto } from '~/decrypt-worker/util/qmc2KeyCrypto';
+import { fetchParakeet } from '@um/libparakeet';
+import { stringToUTF8Bytes } from '~/decrypt-worker/util/utf8Encoder';
+
+// v1 only
+export class KWMCrypto implements CryptoBase {
+  cryptoName = 'KWM';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer, opts: DecryptCommandOptions): Promise<Blob> {
+    const kwm2key = opts.kwm2key ?? '';
+
+    const parakeet = await fetchParakeet();
+    const keyCrypto = makeQMCv2KeyCrypto(parakeet);
+    return transformBlob(buffer, (p) => p.make.KuwoKWMv2(KWM_KEY, stringToUTF8Bytes(kwm2key), keyCrypto), {
+      cleanup: () => keyCrypto.delete(),
+      parakeet,
+    });
+  }
+
+  public static make() {
+    return new KWMCrypto();
+  }
+}

src/decrypt-worker/crypto/migu/migu3d_keyless.ts

@@ -0,0 +1,15 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+
+export class MiguCrypto implements CryptoBase {
+  cryptoName = 'Migu3D/Keyless';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return transformBlob(buffer, (p) => p.make.Migu3D());
+  }
+
+  public static make() {
+    return new MiguCrypto();
+  }
+}

src/decrypt-worker/crypto/ncm/ncm_pc.ts

@@ -0,0 +1,35 @@
+import type { CryptoBase } from '../CryptoBase';
+import { NCMFile } from '@unlock-music/crypto';
+import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
+
+export class NCMCrypto implements CryptoBase {
+  cryptoName = 'NCM/PC';
+  checkByDecryptHeader = false;
+  ncm = new NCMFile();
+
+  async checkBySignature(buffer: ArrayBuffer) {
+    const data = new Uint8Array(buffer);
+    let len = 1024;
+    try {
+      while (len !== 0) {
+        console.debug('NCM/open: read %d bytes', len);
+        len = this.ncm.open(data.subarray(0, len));
+      }
+    } catch (error) {
+      return false;
+    }
+    return true;
+  }
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    const audioBuffer = new Uint8Array(buffer.slice(this.ncm.audioOffset));
+    for (const [block, offset] of chunkBuffer(audioBuffer)) {
+      this.ncm.decrypt(block, offset);
+    }
+    return new Blob([audioBuffer]);
+  }
+
+  public static make() {
+    return new NCMCrypto();
+  }
+}

src/decrypt-worker/crypto/qmc/qmc_v1.key.ts

@@ -0,0 +1,16 @@
+export default new Uint8Array([
+  0x77, 0x48, 0x32, 0x73, 0xde, 0xf2, 0xc0, 0xc8, 0x95, 0xec, 0x30, 0xb2, 0x51, 0xc3, 0xe1, 0xa0, 0x9e, 0xe6, 0x9d,
+  0xcf, 0xfa, 0x7f, 0x14, 0xd1, 0xce, 0xb8, 0xdc, 0xc3, 0x4a, 0x67, 0x93, 0xd6, 0x28, 0xc2, 0x91, 0x70, 0xca, 0x8d,
+  0xa2, 0xa4, 0xf0, 0x08, 0x61, 0x90, 0x7e, 0x6f, 0xa2, 0xe0, 0xeb, 0xae, 0x3e, 0xb6, 0x67, 0xc7, 0x92, 0xf4, 0x91,
+  0xb5, 0xf6, 0x6c, 0x5e, 0x84, 0x40, 0xf7, 0xf3, 0x1b, 0x02, 0x7f, 0xd5, 0xab, 0x41, 0x89, 0x28, 0xf4, 0x25, 0xcc,
+  0x52, 0x11, 0xad, 0x43, 0x68, 0xa6, 0x41, 0x8b, 0x84, 0xb5, 0xff, 0x2c, 0x92, 0x4a, 0x26, 0xd8, 0x47, 0x6a, 0x7c,
+  0x95, 0x61, 0xcc, 0xe6, 0xcb, 0xbb, 0x3f, 0x47, 0x58, 0x89, 0x75, 0xc3, 0x75, 0xa1, 0xd9, 0xaf, 0xcc, 0x08, 0x73,
+  0x17, 0xdc, 0xaa, 0x9a, 0xa2, 0x16, 0x41, 0xd8, 0xa2, 0x06, 0xc6, 0x8b, 0xfc, 0x66, 0x34, 0x9f, 0xcf, 0x18, 0x23,
+  0xa0, 0x0a, 0x74, 0xe7, 0x2b, 0x27, 0x70, 0x92, 0xe9, 0xaf, 0x37, 0xe6, 0x8c, 0xa7, 0xbc, 0x62, 0x65, 0x9c, 0xc2,
+  0x08, 0xc9, 0x88, 0xb3, 0xf3, 0x43, 0xac, 0x74, 0x2c, 0x0f, 0xd4, 0xaf, 0xa1, 0xc3, 0x01, 0x64, 0x95, 0x4e, 0x48,
+  0x9f, 0xf4, 0x35, 0x78, 0x95, 0x7a, 0x39, 0xd6, 0x6a, 0xa0, 0x6d, 0x40, 0xe8, 0x4f, 0xa8, 0xef, 0x11, 0x1d, 0xf3,
+  0x1b, 0x3f, 0x3f, 0x07, 0xdd, 0x6f, 0x5b, 0x19, 0x30, 0x19, 0xfb, 0xef, 0x0e, 0x37, 0xf0, 0x0e, 0xcd, 0x16, 0x49,
+  0xfe, 0x53, 0x47, 0x13, 0x1a, 0xbd, 0xa4, 0xf1, 0x40, 0x19, 0x60, 0x0e, 0xed, 0x68, 0x09, 0x06, 0x5f, 0x4d, 0xcf,
+  0x3d, 0x1a, 0xfe, 0x20, 0x77, 0xe4, 0xd9, 0xda, 0xf9, 0xa4, 0x2b, 0x76, 0x1c, 0x71, 0xdb, 0x00, 0xbc, 0xfd, 0x0c,
+  0x6c, 0xa5, 0x47, 0xf7, 0xf6, 0x00, 0x79, 0x4a, 0x11,
+]);

src/decrypt-worker/crypto/qmc/qmc_v1.ts

@@ -0,0 +1,16 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+import key from './qmc_v1.key.ts';
+
+export class QMC1Crypto implements CryptoBase {
+  cryptoName = 'QMC/v1';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return transformBlob(buffer, (p) => p.make.QMCv1(key));
+  }
+
+  public static make() {
+    return new QMC1Crypto();
+  }
+}

src/decrypt-worker/crypto/qmc/qmc_v2.key.ts

@@ -0,0 +1,3 @@
+export const SEED = 106;
+export const ENC_V2_KEY_1 = '386ZJY!@#*$%^&)(';
+export const ENC_V2_KEY_2 = '**#!(#$%&^a1cZ,T';

src/decrypt-worker/crypto/qmc/qmc_v2.ts

@@ -0,0 +1,51 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
+import { fetchParakeet } from '@um/libparakeet';
+import { stringToUTF8Bytes } from '~/decrypt-worker/util/utf8Encoder.ts';
+import { makeQMCv2FooterParser, makeQMCv2KeyCrypto } from '~/decrypt-worker/util/qmc2KeyCrypto.ts';
+
+export class QMC2Crypto implements CryptoBase {
+  cryptoName = 'QMC/v2';
+  checkByDecryptHeader = false;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    const parakeet = await fetchParakeet();
+    const footerParser = makeQMCv2FooterParser(parakeet);
+    return transformBlob(buffer, (p) => p.make.QMCv2(footerParser), {
+      parakeet,
+      cleanup: () => footerParser.delete(),
+    });
+  }
+
+  public static make() {
+    return new QMC2Crypto();
+  }
+}
+
+export class QMC2CryptoWithKey implements CryptoBase {
+  cryptoName = 'QMC/v2 (key)';
+  checkByDecryptHeader = true;
+
+  async checkBySignature(_buffer: ArrayBuffer, options: DecryptCommandOptions): Promise<boolean> {
+    return Boolean(options.qmc2Key);
+  }
+
+  async decrypt(buffer: ArrayBuffer, options: DecryptCommandOptions): Promise<Blob> {
+    if (!options.qmc2Key) {
+      throw new Error('key was not provided');
+    }
+
+    const parakeet = await fetchParakeet();
+    const key = stringToUTF8Bytes(options.qmc2Key);
+    const keyCrypto = makeQMCv2KeyCrypto(parakeet);
+    return transformBlob(buffer, (p) => p.make.QMCv2EKey(key, keyCrypto), {
+      parakeet,
+      cleanup: () => keyCrypto.delete(),
+    });
+  }
+
+  public static make() {
+    return new QMC2CryptoWithKey();
+  }
+}

src/decrypt-worker/crypto/qtfm/qtfm_device.ts

@@ -0,0 +1,25 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase';
+import { DecryptCommandOptions } from '~/decrypt-worker/types';
+
+export class QingTingFM$Device implements CryptoBase {
+  cryptoName = 'QingTing FM/Device ID';
+  checkByDecryptHeader = false;
+
+  async checkBySignature(_buffer: ArrayBuffer, options: DecryptCommandOptions) {
+    return Boolean(/^\.p~?!.*\.qta$/.test(options.fileName) && options.qingTingAndroidKey);
+  }
+
+  async decrypt(buffer: ArrayBuffer, options: DecryptCommandOptions): Promise<Blob> {
+    const { fileName: name, qingTingAndroidKey } = options;
+    if (!qingTingAndroidKey) {
+      throw new Error('QingTingFM Android Device Key was not provided');
+    }
+
+    return transformBlob(buffer, (p) => p.make.QingTingFM(name, qingTingAndroidKey));
+  }
+
+  public static make() {
+    return new QingTingFM$Device();
+  }
+}

src/decrypt-worker/crypto/transparent/transparent.ts

@@ -0,0 +1,14 @@
+import type { CryptoBase } from '../CryptoBase';
+
+export class TransparentCrypto implements CryptoBase {
+  cryptoName = 'Transparent';
+  checkByDecryptHeader = true;
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    return new Blob([buffer]);
+  }
+
+  public static make() {
+    return new TransparentCrypto();
+  }
+}

src/decrypt-worker/crypto/xiami/xiami.ts

@@ -0,0 +1,51 @@
+// Xiami file header
+// offset  description
+//   0x00  "ifmt"
+//   0x04  Format name, e.g. "FLAC".
+//   0x08  0xfe, 0xfe, 0xfe, 0xfe
+//   0x0C  (3 bytes) Little-endian, size of data to copy without modification.
+//         e.g. [ 8a 19 00 ] = 6538 bytes of plaintext data.
+//   0x0F  (1 byte) File key, applied to
+//   0x10  Plaintext data
+//   ????  Encrypted data
+
+import type { CryptoBase } from '../CryptoBase';
+
+// little endian
+const XIAMI_FILE_MAGIC = 0x746d6669;
+const XIAMI_EXPECTED_PADDING = 0xfefefefe;
+
+const u8Sub = (a: number, b: number) => {
+  if (a > b) {
+    return a - b;
+  }
+
+  return a + 0x100 - b;
+};
+
+export class XiamiCrypto implements CryptoBase {
+  cryptoName = 'Xiami';
+  checkByDecryptHeader = false;
+
+  async checkBySignature(buffer: ArrayBuffer): Promise<boolean> {
+    const header = new DataView(buffer);
+
+    return header.getUint32(0x00, true) === XIAMI_FILE_MAGIC && header.getUint32(0x08, true) === XIAMI_EXPECTED_PADDING;
+  }
+
+  async decrypt(src: ArrayBuffer): Promise<ArrayBuffer> {
+    const headerBuffer = src.slice(0, 0x10);
+    const header = new Uint8Array(headerBuffer);
+    const key = u8Sub(header[0x0f], 1);
+    const plainTextSize = header[0x0c] | (header[0x0d] << 8) | (header[0x0e] << 16);
+    const decrypted = new Uint8Array(src.slice(0x10));
+    for (let i = decrypted.byteLength - 1; i >= plainTextSize; i--) {
+      decrypted[i] = u8Sub(key, decrypted[i]);
+    }
+    return decrypted;
+  }
+
+  public static make() {
+    return new XiamiCrypto();
+  }
+}

src/decrypt-worker/crypto/xmly/xmly_android.key.ts

@@ -0,0 +1,17 @@
+export interface XimalayaAndroidKey {
+  contentKey: string;
+  init: number;
+  step: number;
+}
+
+export const XimalayaX2MKey: XimalayaAndroidKey = {
+  contentKey: 'xmly',
+  init: 0.615243,
+  step: 3.837465,
+};
+
+export const XimalayaX3MKey: XimalayaAndroidKey = {
+  contentKey: '3989d111aad5613940f4fc44b639b292',
+  init: 0.726354,
+  step: 3.948576,
+};

src/decrypt-worker/crypto/xmly/xmly_android.ts

@@ -0,0 +1,29 @@
+import { transformBlob } from '~/decrypt-worker/util/transformBlob';
+import type { CryptoBase } from '../CryptoBase.js';
+import { XimalayaAndroidKey, XimalayaX2MKey, XimalayaX3MKey } from './xmly_android.key.js';
+
+export class XimalayaAndroidCrypto implements CryptoBase {
+  cryptoName = 'Ximalaya/Android';
+  checkByDecryptHeader = true;
+  constructor(private key: XimalayaAndroidKey) {}
+
+  async decrypt(buffer: ArrayBuffer): Promise<Blob> {
+    const { contentKey, init, step } = this.key;
+    return transformBlob(buffer, (p) => {
+      const transformer = p.make.XimalayaAndroid(init, step, contentKey);
+      if (!transformer) {
+        throw new Error('could not make xmly transformer, is key invalid?');
+      }
+
+      return transformer;
+    });
+  }
+
+  public static makeX2M() {
+    return new XimalayaAndroidCrypto(XimalayaX2MKey);
+  }
+
+  public static makeX3M() {
+    return new XimalayaAndroidCrypto(XimalayaX3MKey);
+  }
+}

src/decrypt-worker/decipher/KugouMusic.ts

@@ -1,33 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
-import { KuGou } from '@unlock-music/crypto';
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-
-export class KugouMusicDecipher implements DecipherInstance {
-  cipherName = 'Kugou';
-
-  async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    let kgm: KuGou | undefined;
-
-    try {
-      kgm = KuGou.from_header(buffer.subarray(0, 0x400));
-
-      const audioBuffer = new Uint8Array(buffer.subarray(0x400));
-      for (const [block, offset] of chunkBuffer(audioBuffer)) {
-        kgm.decrypt(block, offset);
-      }
-
-      return {
-        status: Status.OK,
-        cipherName: this.cipherName,
-        data: audioBuffer,
-      };
-    } finally {
-      kgm?.free();
-    }
-  }
-
-  public static make() {
-    return new KugouMusicDecipher();
-  }
-}

src/decrypt-worker/decipher/KuwoMusic.ts

@@ -1,35 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
-import { KuwoHeader, KWMDecipher } from '@unlock-music/crypto';
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-
-export class KuwoMusicDecipher implements DecipherInstance {
-  cipherName = 'Kuwo';
-
-  async decrypt(buffer: Uint8Array, options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    let header: KuwoHeader | undefined;
-    let kwm: KWMDecipher | undefined;
-
-    try {
-      header = KuwoHeader.parse(buffer.subarray(0, 0x400));
-      kwm = new KWMDecipher(header, options.kwm2key);
-
-      const audioBuffer = new Uint8Array(buffer.subarray(0x400));
-      for (const [block, offset] of chunkBuffer(audioBuffer)) {
-        kwm.decrypt(block, offset);
-      }
-      return {
-        status: Status.OK,
-        cipherName: this.cipherName,
-        data: audioBuffer,
-      };
-    } finally {
-      kwm?.free();
-      header?.free();
-    }
-  }
-
-  public static make() {
-    return new KuwoMusicDecipher();
-  }
-}

src/decrypt-worker/decipher/Migu3d.ts

@@ -1,27 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers.ts';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-import { Migu3D } from '@unlock-music/crypto';
-
-export class Migu3DKeylessDecipher implements DecipherInstance {
-  cipherName = 'Migu3D (Keyless)';
-
-  async decrypt(buffer: Uint8Array): Promise<DecipherResult | DecipherOK> {
-    const mg3d = Migu3D.fromHeader(buffer.subarray(0, 0x100));
-    const audioBuffer = new Uint8Array(buffer);
-
-    for (const [block, i] of chunkBuffer(audioBuffer)) {
-      mg3d.decrypt(block, i);
-    }
-    mg3d.free();
-
-    return {
-      cipherName: this.cipherName,
-      status: Status.OK,
-      data: audioBuffer,
-    };
-  }
-
-  public static make() {
-    return new Migu3DKeylessDecipher();
-  }
-}

src/decrypt-worker/decipher/NetEaseCloudMusic.ts

@@ -1,42 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
-import { NCMFile } from '@unlock-music/crypto';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError.ts';
-
-export class NetEaseCloudMusicDecipher implements DecipherInstance {
-  cipherName = 'NCM/PC';
-
-  tryInit(ncm: NCMFile, buffer: Uint8Array) {
-    let neededLength = 1024;
-    while (neededLength !== 0) {
-      console.debug('NCM/open: read %d bytes', neededLength);
-      neededLength = ncm.open(buffer.subarray(0, neededLength));
-      if (neededLength === -1) {
-        throw new UnsupportedSourceFile('file is not ncm');
-      }
-    }
-  }
-
-  async decrypt(buffer: Uint8Array): Promise<DecipherResult | DecipherOK> {
-    const ncm = new NCMFile();
-    try {
-      this.tryInit(ncm, buffer);
-
-      const audioBuffer = buffer.slice(ncm.audioOffset);
-      for (const [block, offset] of chunkBuffer(audioBuffer)) {
-        ncm.decrypt(block, offset);
-      }
-      return {
-        status: Status.OK,
-        cipherName: this.cipherName,
-        data: audioBuffer,
-      };
-    } finally {
-      ncm.free();
-    }
-  }
-
-  public static make() {
-    return new NetEaseCloudMusicDecipher();
-  }
-}

src/decrypt-worker/decipher/QQMusic.ts

@@ -1,74 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
-import { decryptQMC1, QMC2, QMCFooter } from '@unlock-music/crypto';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError.ts';
-import { isDataLooksLikeAudio } from '~/decrypt-worker/util/audioType.ts';
-
-export class QQMusicV1Decipher implements DecipherInstance {
-  cipherName = 'QQMusic/QMC1';
-
-  async decrypt(buffer: Uint8Array): Promise<DecipherResult | DecipherOK> {
-    const header = buffer.slice(0, 0x20);
-    decryptQMC1(header, 0);
-    if (!isDataLooksLikeAudio(header)) {
-      throw new UnsupportedSourceFile('does not look like QMC file');
-    }
-
-    const audioBuffer = new Uint8Array(buffer);
-    for (const [block, offset] of chunkBuffer(audioBuffer)) {
-      decryptQMC1(block, offset);
-    }
-    return {
-      status: Status.OK,
-      cipherName: this.cipherName,
-      data: audioBuffer,
-    };
-  }
-
-  public static create() {
-    return new QQMusicV1Decipher();
-  }
-}
-
-export class QQMusicV2Decipher implements DecipherInstance {
-  cipherName: string;
-
-  constructor(private readonly useUserKey: boolean) {
-    this.cipherName = `QQMusic/QMC2(user_key=${+useUserKey})`;
-  }
-
-  async decrypt(buffer: Uint8Array, options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    const footer = QMCFooter.parse(buffer.subarray(buffer.byteLength - 1024));
-    if (!footer) {
-      throw new UnsupportedSourceFile('Not QMC2 File');
-    }
-
-    const audioBuffer = buffer.slice(0, buffer.byteLength - footer.size);
-    const ekey = this.useUserKey ? options.qmc2Key : footer.ekey;
-    footer.free();
-    if (!ekey) {
-      throw new Error('EKey missing');
-    }
-
-    const qmc2 = new QMC2(ekey);
-    for (const [block, offset] of chunkBuffer(audioBuffer)) {
-      qmc2.decrypt(block, offset);
-    }
-    qmc2.free();
-
-    return {
-      status: Status.OK,
-      cipherName: this.cipherName,
-      data: audioBuffer,
-    };
-  }
-
-  public static createWithUserKey() {
-    return new QQMusicV2Decipher(true);
-  }
-
-  public static createWithEmbeddedEKey() {
-    return new QQMusicV2Decipher(false);
-  }
-}

src/decrypt-worker/decipher/QingTingFM.ts

@@ -1,37 +0,0 @@
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers.ts';
-import { QingTingFM } from '@unlock-music/crypto';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-import { unhex } from '~/util/hex.ts';
-
-export class QignTingFMDecipher implements DecipherInstance {
-  cipherName = 'QingTingFM (Android, qta)';
-
-  async decrypt(buffer: Uint8Array, opts: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    const key = unhex(opts.qingTingAndroidKey || '');
-    const iv = QingTingFM.getFileIV(opts.fileName);
-
-    if (key.byteLength !== 16 || iv.byteLength !== 16) {
-      return {
-        status: Status.FAILED,
-        message: 'device key or iv invalid',
-      };
-    }
-
-    const qtfm = new QingTingFM(key, iv);
-    const audioBuffer = new Uint8Array(buffer);
-    for (const [block, i] of chunkBuffer(audioBuffer)) {
-      qtfm.decrypt(block, i);
-    }
-
-    return {
-      cipherName: this.cipherName,
-      status: Status.OK,
-      data: audioBuffer,
-    };
-  }
-
-  public static make() {
-    return new QignTingFMDecipher();
-  }
-}

src/decrypt-worker/decipher/Transparent.ts

@@ -1,18 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers.ts';
-
-export class TransparentDecipher implements DecipherInstance {
-  cipherName = 'none';
-
-  async decrypt(buffer: Uint8Array): Promise<DecipherResult | DecipherOK> {
-    return {
-      cipherName: 'None',
-      status: Status.OK,
-      data: buffer,
-      message: 'No decipher applied',
-    };
-  }
-
-  public static make() {
-    return new TransparentDecipher();
-  }
-}

src/decrypt-worker/decipher/XiamiMusic.ts

@@ -1,28 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers.ts';
-import { Xiami } from '@unlock-music/crypto';
-import { chunkBuffer } from '~/decrypt-worker/util/buffer.ts';
-
-export class XiamiDecipher implements DecipherInstance {
-  cipherName = 'Xiami (XM)';
-
-  async decrypt(buffer: Uint8Array): Promise<DecipherResult | DecipherOK> {
-    const xm = Xiami.from_header(buffer.subarray(0, 0x10));
-    const { copyPlainLength } = xm;
-    const audioBuffer = buffer.slice(0x10);
-
-    for (const [block] of chunkBuffer(audioBuffer.subarray(copyPlainLength))) {
-      xm.decrypt(block);
-    }
-    xm.free();
-
-    return {
-      cipherName: this.cipherName,
-      status: Status.OK,
-      data: audioBuffer,
-    };
-  }
-
-  public static make() {
-    return new XiamiDecipher();
-  }
-}

src/decrypt-worker/decipher/Ximalaya.ts

@@ -1,71 +0,0 @@
-import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
-import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
-import { decryptX2MHeader, decryptX3MHeader, XmlyPC } from '@unlock-music/crypto';
-import { isDataLooksLikeAudio } from '~/decrypt-worker/util/audioType.ts';
-import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError.ts';
-
-export class XimalayaAndroidDecipher implements DecipherInstance {
-  cipherName: string;
-
-  constructor(
-    private decipher: (buffer: Uint8Array) => void,
-    private cipherType: string,
-  ) {
-    this.cipherName = `Ximalaya (Android, ${cipherType})`;
-  }
-
-  async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    // Detect with first 0x400 bytes
-    const slice = buffer.slice(0, 0x400);
-    this.decipher(slice);
-    if (!isDataLooksLikeAudio(slice)) {
-      throw new UnsupportedSourceFile(`Not a Xmly android file (${this.cipherType})`);
-    }
-    const result = new Uint8Array(buffer);
-    result.set(slice, 0);
-    return {
-      cipherName: this.cipherName,
-      status: Status.OK,
-      data: result,
-    };
-  }
-
-  public static makeX2M() {
-    return new XimalayaAndroidDecipher(decryptX2MHeader, 'X2M');
-  }
-
-  public static makeX3M() {
-    return new XimalayaAndroidDecipher(decryptX3MHeader, 'X3M');
-  }
-}
-
-export class XimalayaPCDecipher implements DecipherInstance {
-  cipherName = 'Ximalaya (PC)';
-
-  async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
-    // Detect with first 0x400 bytes
-    const headerSize = XmlyPC.getHeaderSize(buffer.subarray(0, 1024));
-    const xm = new XmlyPC(buffer.subarray(0, headerSize));
-    const { audioHeader, encryptedHeaderOffset, encryptedHeaderSize } = xm;
-    const plainAudioDataOffset = encryptedHeaderOffset + encryptedHeaderSize;
-    const plainAudioDataLength = buffer.byteLength - plainAudioDataOffset;
-    const encryptedAudioPart = buffer.slice(encryptedHeaderOffset, plainAudioDataOffset);
-    const encryptedAudioPartLen = xm.decrypt(encryptedAudioPart);
-    const audioSize = audioHeader.byteLength + encryptedAudioPartLen + plainAudioDataLength;
-    xm.free();
-
-    const result = new Uint8Array(audioSize);
-    result.set(audioHeader);
-    result.set(encryptedAudioPart, audioHeader.byteLength);
-    result.set(buffer.subarray(plainAudioDataOffset), audioHeader.byteLength + encryptedAudioPartLen);
-    return {
-      status: Status.OK,
-      data: result,
-      cipherName: this.cipherName,
-    };
-  }
-
-  public static make() {
-    return new XimalayaPCDecipher();
-  }
-}

src/decrypt-worker/types.ts

@@ -12,23 +12,6 @@ export interface DecryptCommandPayload {
 }
 
 export interface FetchMusicExNamePayload {
+  id: string;
   blobURI: string;
 }
-
-export interface ParseKuwoHeaderPayload {
-  blobURI: string;
-}
-
-export type ParseKuwoHeaderResponse = null | {
-  resourceId: number;
-  qualityId: number;
-};
-
-export interface GetQingTingFMDeviceKeyPayload {
-  product: string;
-  device: string;
-  manufacturer: string;
-  brand: string;
-  board: string;
-  model: string;
-}

src/decrypt-worker/util/audioType.ts

@@ -1,26 +0,0 @@
-import { detectAudioType } from '@unlock-music/crypto';
-
-export function detectAudioExtension(buffer: Uint8Array): string {
-  let neededLength = 0x100;
-  let extension = 'bin';
-  while (neededLength !== 0) {
-    console.debug('AudioDetect: read %d bytes', neededLength);
-    const detectResult = detectAudioType(buffer.subarray(0, neededLength));
-    extension = detectResult.audioType;
-    neededLength = detectResult.needMore;
-    detectResult.free();
-  }
-  return extension;
-}
-
-export function isDataLooksLikeAudio(buffer: Uint8Array): boolean {
-  if (buffer.byteLength < 0x20) {
-    return false;
-  }
-  const detectResult = detectAudioType(buffer.subarray(0, 0x20));
-
-  // If we have needMore != 0, that means we have a valid header (ID3 for example).
-  const ok = detectResult.needMore !== 0 || detectResult.audioType !== 'bin';
-  detectResult.free();
-  return ok;
-}

src/decrypt-worker/util/qmc2KeyCrypto.ts

@@ -0,0 +1,5 @@
+import type { Parakeet } from '@um/libparakeet';
+import { SEED, ENC_V2_KEY_1, ENC_V2_KEY_2 } from '../crypto/qmc/qmc_v2.key';
+
+export const makeQMCv2KeyCrypto = (p: Parakeet) => p.make.QMCv2KeyCrypto(SEED, ENC_V2_KEY_1, ENC_V2_KEY_2);
+export const makeQMCv2FooterParser = (p: Parakeet) => p.make.QMCv2FooterParser(SEED, ENC_V2_KEY_1, ENC_V2_KEY_2);

src/decrypt-worker/util/transformBlob.ts

@@ -0,0 +1,38 @@
+import { Transformer, Parakeet, TransformResult, fetchParakeet } from '@um/libparakeet';
+import { toArrayBuffer } from './buffer';
+import { UnsupportedSourceFile } from './DecryptError';
+
+export async function transformBlob(
+  blob: Blob | ArrayBuffer,
+  transformerFactory: (p: Parakeet) => Transformer | Promise<Transformer>,
+  { cleanup, parakeet }: { cleanup?: () => void; parakeet?: Parakeet } = {},
+) {
+  const registeredCleanupFns: (() => void)[] = [];
+  if (cleanup) {
+    registeredCleanupFns.push(cleanup);
+  }
+
+  try {
+    const mod = parakeet ?? (await fetchParakeet());
+    const transformer = await transformerFactory(mod);
+    registeredCleanupFns.push(() => transformer.delete());
+
+    const reader = mod.make.Reader(await toArrayBuffer(blob));
+    registeredCleanupFns.push(() => reader.delete());
+
+    const sink = mod.make.WriterSink();
+    const writer = sink.getWriter();
+    registeredCleanupFns.push(() => writer.delete());
+
+    const result = transformer.Transform(writer, reader);
+    if (result === TransformResult.ERROR_INVALID_FORMAT) {
+      throw new UnsupportedSourceFile(`transformer<${transformer.Name}> does not recognize this file`);
+    } else if (result !== TransformResult.OK) {
+      throw new Error(`transformer<${transformer.Name}> failed with error: ${TransformResult[result]} (${result})`);
+    }
+
+    return sink.collectBlob();
+  } finally {
+    registeredCleanupFns.forEach((cleanup) => cleanup());
+  }
+}

src/decrypt-worker/util/wasmClass.ts

@@ -1,17 +0,0 @@
-import { isPromise } from 'radash';
-
-export function withWasmClass<T extends { free: () => void }, R>(instance: T, cb: (inst: T) => R): R {
-  let isAsync = false;
-  try {
-    const resp = cb(instance);
-    if (resp && isPromise(resp)) {
-      isAsync = true;
-      resp.finally(() => instance.free());
-    }
-    return resp;
-  } finally {
-    if (!isAsync) {
-      instance.free();
-    }
-  }
-}

src/decrypt-worker/worker.ts

@@ -1,17 +1,14 @@
 import { WorkerServerBus } from '~/util/WorkerEventBus';
 import { DECRYPTION_WORKER_ACTION_NAME } from './constants';
-import { getUmcVersion } from '@unlock-music/crypto';
 
-import { workerDecryptHandler } from './worker/decrypt.ts';
+import { getSDKVersion } from '@um/libparakeet';
-import { workerParseMusicExMediaName } from './worker/qmcv2_parser.ts';
+
-import { workerGetQtfmDeviceKey } from '~/decrypt-worker/worker/qtfm_device_key.ts';
+import { workerDecryptHandler } from './worker/handler/decrypt';
-import { workerParseKuwoHeader } from '~/decrypt-worker/worker/kuwo_header_parse.ts';
+import { workerParseMusicExMediaName } from './worker/handler/qmcv2_parser';
 
 const bus = new WorkerServerBus();
 onmessage = bus.onmessage;
 
 bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.DECRYPT, workerDecryptHandler);
 bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.FIND_QMC_MUSICEX_NAME, workerParseMusicExMediaName);
-bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.VERSION, getUmcVersion);
+bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.VERSION, getSDKVersion);
-bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.KUWO_PARSE_HEADER, workerParseKuwoHeader);
-bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.QINGTING_FM_GET_DEVICE_KEY, workerGetQtfmDeviceKey);

src/decrypt-worker/worker/decrypt.ts

@@ -1,91 +0,0 @@
-import { timedLogger, withGroupedLogs as withTimeGroupedLogs } from '~/util/logUtils.ts';
-import type { DecryptCommandOptions, DecryptCommandPayload } from '~/decrypt-worker/types.ts';
-import { allCryptoFactories } from '../Deciphers.ts';
-import { toBlob } from '~/decrypt-worker/util/buffer.ts';
-import { DecipherFactory, DecipherInstance, Status } from '~/decrypt-worker/Deciphers.ts';
-import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError.ts';
-import { ready as umCryptoReady } from '@unlock-music/crypto';
-import { go } from '~/util/go.ts';
-import { detectAudioExtension } from '~/decrypt-worker/util/audioType.ts';
-
-class DecryptCommandHandler {
-  private readonly label: string;
-
-  constructor(
-    label: string,
-    private buffer: Uint8Array,
-    private options: DecryptCommandOptions,
-  ) {
-    this.label = `DecryptCommandHandler(${label})`;
-  }
-
-  log<R>(label: string, fn: () => Promise<R>): Promise<R> {
-    return timedLogger(`${this.label}: ${label}`, fn);
-  }
-
-  async decrypt(decipherFactories: DecipherFactory[]) {
-    const errors: string[] = [];
-    for (const factory of decipherFactories) {
-      const decipher = factory();
-
-      const [result, error] = await go(this.tryDecryptWith(decipher));
-      if (!error) {
-        if (result) {
-          return result;
-        }
-        errors.push(`${decipher.cipherName}: no response`);
-        continue; // not supported
-      }
-
-      const errMsg = error.message;
-      if (errMsg) {
-        errors.push(`${decipher.cipherName}: ${errMsg}`);
-      }
-      if (error instanceof UnsupportedSourceFile) {
-        console.debug('[%s] Not this decipher:', decipher.cipherName, error);
-      } else {
-        console.error('decrypt failed with unknown error: ', error);
-      }
-    }
-
-    throw new UnsupportedSourceFile(errors.join('\n'));
-  }
-
-  async tryDecryptWith(decipher: DecipherInstance) {
-    const result = await this.log(`try decrypt with ${decipher.cipherName}`, async () =>
-      decipher.decrypt(this.buffer, this.options),
-    );
-    switch (result.status) {
-      case Status.NOT_THIS_CIPHER:
-        return null;
-      case Status.FAILED:
-        throw new Error(`failed: ${result.message}`);
-      default:
-        break;
-    }
-
-    // Check if we had a successful decryption
-    let audioExt = result.overrideExtension || detectAudioExtension(result.data);
-    if (!result.overrideExtension && audioExt === 'bin') {
-      throw new UnsupportedSourceFile('unable to produce valid audio file');
-    }
-
-    // Convert mp4 to m4a
-    if (audioExt.toLowerCase() === 'mp4') {
-      audioExt = 'm4a';
-    }
-
-    return { decrypted: URL.createObjectURL(toBlob(result.data)), ext: audioExt };
-  }
-}
-
-export const workerDecryptHandler = async ({ id: payloadId, blobURI, options }: DecryptCommandPayload) => {
-  await umCryptoReady;
-  const id = payloadId.replace('://', ':');
-  const label = `decrypt(${id})`;
-  return withTimeGroupedLogs(label, async () => {
-    const buffer = await fetch(blobURI).then((r) => r.arrayBuffer());
-    const handler = new DecryptCommandHandler(id, new Uint8Array(buffer), options);
-    return handler.decrypt(allCryptoFactories);
-  });
-};

src/decrypt-worker/worker/handler/decrypt.ts

@@ -0,0 +1,107 @@
+import { Parakeet, fetchParakeet } from '@um/libparakeet';
+import { timedLogger, withGroupedLogs as withTimeGroupedLogs } from '~/util/logUtils';
+import type { DecryptCommandOptions, DecryptCommandPayload } from '~/decrypt-worker/types';
+import { allCryptoFactories } from '../../crypto/CryptoFactory';
+import { toArrayBuffer, toBlob } from '~/decrypt-worker/util/buffer';
+import { CryptoBase, CryptoFactory } from '~/decrypt-worker/crypto/CryptoBase';
+import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError';
+import { ready as umCryptoReady } from '@unlock-music/crypto';
+
+// Use first 4MiB of the file to perform check.
+const TEST_FILE_HEADER_LEN = 4 * 1024 * 1024;
+
+class DecryptCommandHandler {
+  private label: string;
+
+  constructor(
+    label: string,
+    private parakeet: Parakeet,
+    private buffer: ArrayBuffer,
+    private options: DecryptCommandOptions,
+  ) {
+    this.label = `DecryptCommandHandler(${label})`;
+  }
+
+  log<R>(label: string, fn: () => R): R {
+    return timedLogger(`${this.label}: ${label}`, fn);
+  }
+
+  async decrypt(factories: CryptoFactory[]) {
+    for (const factory of factories) {
+      const decryptor = factory();
+
+      try {
+        const result = await this.tryDecryptFile(decryptor);
+        if (result === null) {
+          continue;
+        }
+        return result;
+      } catch (error) {
+        if (error instanceof UnsupportedSourceFile) {
+          console.debug('WARN: decryptor does not recognize source file, wrong crypto?', error);
+        } else {
+          console.error('decrypt failed with unknown error: ', error);
+        }
+      }
+    }
+
+    throw new UnsupportedSourceFile('could not decrypt file: no working decryptor found');
+  }
+
+  async tryDecryptFile(crypto: CryptoBase) {
+    if (crypto.checkBySignature && !(await crypto.checkBySignature(this.buffer, this.options))) {
+      return null;
+    }
+
+    if (crypto.checkByDecryptHeader && !(await this.acceptByDecryptFileHeader(crypto))) {
+      return null;
+    }
+
+    const decrypted = await this.log(`decrypt (${crypto.cryptoName})`, () => crypto.decrypt(this.buffer, this.options));
+
+    // Check if we had a successful decryption
+    let audioExt = crypto.overrideExtension ?? (await this.detectAudioExtension(decrypted));
+    if (crypto.checkByDecryptHeader && audioExt === 'bin') {
+      return null;
+    }
+    if (audioExt.toLowerCase() === 'mp4') {
+      audioExt = 'm4a';
+    }
+
+    return { decrypted: URL.createObjectURL(toBlob(decrypted)), ext: audioExt };
+  }
+
+  async detectAudioExtension(data: Blob | ArrayBuffer): Promise<string> {
+    return this.log(`detect-audio-ext`, async () => {
+      const header = await toArrayBuffer(data.slice(0, TEST_FILE_HEADER_LEN));
+      return this.parakeet.detectAudioExtension(header);
+    });
+  }
+
+  async acceptByDecryptFileHeader(crypto: CryptoBase): Promise<boolean> {
+    // File too small, ignore.
+    if (this.buffer.byteLength <= TEST_FILE_HEADER_LEN) {
+      return true;
+    }
+
+    // Check by decrypt max first 8MiB
+    const decryptedBuffer = await this.log(`${crypto.cryptoName}/decrypt-header-test`, async () =>
+      toArrayBuffer(await crypto.decrypt(this.buffer.slice(0, TEST_FILE_HEADER_LEN), this.options)),
+    );
+
+    return this.parakeet.detectAudioExtension(decryptedBuffer) !== 'bin';
+  }
+}
+
+export const workerDecryptHandler = async ({ id, blobURI, options }: DecryptCommandPayload) => {
+  const label = `decrypt(${id})`;
+  return withTimeGroupedLogs(label, async () => {
+    await umCryptoReady;
+    const parakeet = await timedLogger(`${label}/init`, fetchParakeet);
+    const blob = await timedLogger(`${label}/fetch-src`, async () => fetch(blobURI).then((r) => r.blob()));
+    const buffer = await timedLogger(`${label}/read-src`, async () => blob.arrayBuffer());
+
+    const handler = new DecryptCommandHandler(id, parakeet, buffer, options);
+    return handler.decrypt(allCryptoFactories);
+  });
+};

src/decrypt-worker/worker/handler/qmcv2_parser.ts

@@ -0,0 +1,30 @@
+import { fetchParakeet, FooterParserState } from '@um/libparakeet';
+import type { FetchMusicExNamePayload } from '~/decrypt-worker/types';
+import { makeQMCv2FooterParser } from '~/decrypt-worker/util/qmc2KeyCrypto';
+import { timedLogger, withGroupedLogs as withTimeGroupedLogs } from '~/util/logUtils';
+
+export const workerParseMusicExMediaName = async ({ id, blobURI }: FetchMusicExNamePayload) => {
+  const label = `decrypt(${id})`;
+  return withTimeGroupedLogs(label, async () => {
+    const parakeet = await timedLogger(`${label}/init`, fetchParakeet);
+    const blob = await timedLogger(`${label}/fetch-src`, async () =>
+      fetch(blobURI, { headers: { Range: 'bytes=-1024' } }).then((r) => r.blob()),
+    );
+
+    const buffer = await timedLogger(`${label}/read-src`, async () => {
+      // Firefox: the range header does not work...?
+      const blobBuffer = await blob.arrayBuffer();
+      if (blobBuffer.byteLength > 1024) {
+        return blobBuffer.slice(-1024);
+      }
+      return blobBuffer;
+    });
+
+    const parsed = makeQMCv2FooterParser(parakeet).parse(buffer);
+    if (parsed.state === FooterParserState.OK) {
+      return parsed.mediaName;
+    }
+
+    return null;
+  });
+};

src/decrypt-worker/worker/kuwo_header_parse.ts

@@ -1,17 +0,0 @@
-import { FetchMusicExNamePayload, ParseKuwoHeaderResponse } from '~/decrypt-worker/types.ts';
-import { KuwoHeader } from '@unlock-music/crypto';
-
-export const workerParseKuwoHeader = async ({ blobURI }: FetchMusicExNamePayload): Promise<ParseKuwoHeaderResponse> => {
-  const blob = await fetch(blobURI, { headers: { Range: 'bytes=0-1023' } }).then((r) => r.blob());
-  const arrayBuffer = await blob.arrayBuffer();
-
-  try {
-    const buffer = new Uint8Array(arrayBuffer.slice(0, 1024));
-    const kwm = KuwoHeader.parse(buffer);
-    const { qualityId, resourceId } = kwm;
-    kwm.free();
-    return { qualityId, resourceId };
-  } catch {
-    return null;
-  }
-};

src/decrypt-worker/worker/qmcv2_parser.ts

@@ -1,15 +0,0 @@
-import type { FetchMusicExNamePayload } from '~/decrypt-worker/types.ts';
-import { QMCFooter } from '@unlock-music/crypto';
-
-export const workerParseMusicExMediaName = async ({ blobURI }: FetchMusicExNamePayload) => {
-  const blob = await fetch(blobURI, { headers: { Range: 'bytes=-1024' } }).then((r) => r.blob());
-  const arrayBuffer = await blob.arrayBuffer();
-
-  try {
-    const buffer = new Uint8Array(arrayBuffer.slice(-1024));
-    const footer = QMCFooter.parse(buffer);
-    return footer?.mediaName || null;
-  } catch {
-    return null;
-  }
-};

src/decrypt-worker/worker/qtfm_device_key.ts

@@ -1,15 +0,0 @@
-import { GetQingTingFMDeviceKeyPayload } from '~/decrypt-worker/types.ts';
-import { QingTingFM } from '@unlock-music/crypto';
-import { hex } from '~/util/hex.ts';
-
-export async function workerGetQtfmDeviceKey({
-  device,
-  brand,
-  model,
-  product,
-  manufacturer,
-  board,
-}: GetQingTingFMDeviceKeyPayload) {
-  const buffer = QingTingFM.getDeviceKey(device, brand, model, product, manufacturer, board);
-  return hex(buffer);
-}

src/features/file-listing/FileError.tsx

@@ -1,4 +1,4 @@
-import { Box, Button, chakra, Collapse, Text, useDisclosure } from '@chakra-ui/react';
+import { chakra, Box, Button, Collapse, Text, useDisclosure } from '@chakra-ui/react';
 import { DecryptErrorType } from '~/decrypt-worker/util/DecryptError';
 
 export interface FileErrorProps {
@@ -18,12 +18,11 @@ export function FileError({ error, code }: FileErrorProps) {
     <Box>
       <Text>
         <chakra.span>
-          解密错误：
+          解密错误：<chakra.span color="red.700">{errorSummary}</chakra.span>
-          <chakra.span color="red.700">{errorSummary}</chakra.span>
         </chakra.span>
         {error && (
           <Button ml="2" onClick={onToggle} type="button">
-            诊断信息
+            详细
           </Button>
         )}
       </Text>

src/features/file-listing/fileListingSlice.ts

@@ -1,17 +1,12 @@
+import { createSlice, createAsyncThunk } from '@reduxjs/toolkit';
 import type { PayloadAction } from '@reduxjs/toolkit';
-import { createAsyncThunk, createSlice } from '@reduxjs/toolkit';
 import type { RootState } from '~/store';
 
 import { DECRYPTION_WORKER_ACTION_NAME, type DecryptionResult } from '~/decrypt-worker/constants';
-import type {
+import type { DecryptCommandOptions, FetchMusicExNamePayload } from '~/decrypt-worker/types';
-  DecryptCommandOptions,
-  FetchMusicExNamePayload,
-  ParseKuwoHeaderPayload,
-  ParseKuwoHeaderResponse,
-} from '~/decrypt-worker/types';
 import { decryptionQueue, workerClientBus } from '~/decrypt-worker/client';
 import { DecryptErrorType } from '~/decrypt-worker/util/DecryptError';
-import { selectKWMv2Key, selectQMCv2KeyByFileName, selectQtfmAndroidKey } from '../settings/settingsSelector';
+import { selectQMCv2KeyByFileName, selectKWMv2Key, selectQtfmAndroidKey } from '../settings/settingsSelector';
 
 export enum ProcessState {
   QUEUED = 'QUEUED',
@@ -48,7 +43,6 @@ export interface FileListingState {
   files: Record<string, DecryptedAudioFile>;
   displayMode: ListingMode;
 }
-
 const initialState: FileListingState = {
   files: {},
   displayMode: ListingMode.LIST,
@@ -70,20 +64,28 @@ export const processFile = createAsyncThunk<
     thunkAPI.dispatch(setFileAsProcessing({ id: fileId }));
   };
 
-  const [qmcv2MusicExMediaFile, kuwoHdr] = await Promise.all([
+  const fileHeader = await fetch(file.raw, { headers: { Range: 'bytes=0-1023' } })
-    workerClientBus.request<string, FetchMusicExNamePayload>(DECRYPTION_WORKER_ACTION_NAME.FIND_QMC_MUSICEX_NAME, {
+    .then((r) => r.blob())
+    .then((r) => r.arrayBuffer())
+    .then((r) => {
+      if (r.byteLength > 1024) {
+        return r.slice(0, 1024);
+      }
+      return r;
+    });
+
+  const qmcv2MusicExMediaFile = await workerClientBus.request<string, FetchMusicExNamePayload>(
+    DECRYPTION_WORKER_ACTION_NAME.FIND_QMC_MUSICEX_NAME,
+    {
+      id: fileId,
       blobURI: file.raw,
-    }),
+    },
-    workerClientBus.request<ParseKuwoHeaderResponse, ParseKuwoHeaderPayload>(
+  );
-      DECRYPTION_WORKER_ACTION_NAME.KUWO_PARSE_HEADER,
-      { blobURI: file.raw },
-    ),
-  ]);
 
   const options: DecryptCommandOptions = {
     fileName: file.fileName,
     qmc2Key: selectQMCv2KeyByFileName(state, qmcv2MusicExMediaFile || file.fileName),
-    kwm2key: selectKWMv2Key(state, kuwoHdr),
+    kwm2key: selectKWMv2Key(state, new DataView(fileHeader)),
     qingTingAndroidKey: selectQtfmAndroidKey(state),
   };
   return decryptionQueue.add({ id: fileId, blobURI: file.raw, options }, onPreProcess);

src/features/settings/panels/PanelQMCv2Key.tsx

@@ -4,8 +4,8 @@ import {
   ButtonGroup,
   Checkbox,
   Flex,
-  Heading,
   HStack,
+  Heading,
   Icon,
   IconButton,
   List,
@@ -61,7 +61,7 @@ export function PanelQMCv2Key() {
           alert(`不是支持的 SQLite 数据库文件。`);
           return;
         }
-      } else if (/MMKVStreamEncryptId|filenameEkeyMap|qmpc-mmkv-v1|(\.mmkv$)/i.test(file.name)) {
+      } else if (/MMKVStreamEncryptId|filenameEkeyMap|qmpc-mmkv-v1/i.test(file.name)) {
         const fileBuffer = await file.arrayBuffer();
         const map = parseAndroidQmEKey(new DataView(fileBuffer));
         qmc2Keys = Array.from(map.entries(), ([name, ekey]) => ({ name: getFileName(name), ekey }));

src/features/settings/panels/PanelQingTing.tsx

@@ -13,14 +13,12 @@ import {
 } from '@chakra-ui/react';
 
 import { useAppDispatch, useAppSelector } from '~/hooks';
+import { fetchParakeet } from '@um/libparakeet';
 import { ExtLink } from '~/components/ExtLink';
 import { ChangeEvent, ClipboardEvent } from 'react';
 import { VQuote } from '~/components/HelpText/VQuote';
 import { selectStagingQtfmAndroidKey } from '../settingsSelector';
 import { qtfmAndroidUpdateKey } from '../settingsSlice';
-import { workerClientBus } from '~/decrypt-worker/client.ts';
-import { GetQingTingFMDeviceKeyPayload } from '~/decrypt-worker/types.ts';
-import { DECRYPTION_WORKER_ACTION_NAME } from '~/decrypt-worker/constants.ts';
 
 const QTFM_DEVICE_ID_URL = 'https://github.com/parakeet-rs/qtfm-device-id/releases/latest';
 
@@ -40,22 +38,30 @@ export function PanelQingTing() {
       return;
     }
 
-    const dataMap = Object.create(null);
+    const dataMap = new Map();
-    for (const [, key, value] of plainText.matchAll(/^(PRODUCT|DEVICE|MANUFACTURER|BRAND|BOARD|MODEL): (.+)/gim)) {
+    for (const [_unused, key, value] of plainText.matchAll(
-      dataMap[key.toLowerCase()] = value;
+      /^(PRODUCT|DEVICE|MANUFACTURER|BRAND|BOARD|MODEL): (.+)/gim,
+    )) {
+      dataMap.set(key.toLowerCase(), value);
     }
-    const { product, device, manufacturer, brand, board, model } = dataMap;
 
-    if (product && device && manufacturer && brand && board && model) {
+    const product = dataMap.get('product') ?? null;
+    const device = dataMap.get('device') ?? null;
+    const manufacturer = dataMap.get('manufacturer') ?? null;
+    const brand = dataMap.get('brand') ?? null;
+    const board = dataMap.get('board') ?? null;
+    const model = dataMap.get('model') ?? null;
+    if (
+      product !== null &&
+      device !== null &&
+      manufacturer !== null &&
+      brand !== null &&
+      board !== null &&
+      model !== null
+    ) {
       e.preventDefault();
-      workerClientBus
+      fetchParakeet().then((parakeet) => {
-        .request<string, GetQingTingFMDeviceKeyPayload>(
+        setSecretKey(parakeet.qtfm.createDeviceKey(product, device, manufacturer, brand, board, model));
-          DECRYPTION_WORKER_ACTION_NAME.QINGTING_FM_GET_DEVICE_KEY,
-          dataMap,
-        )
-        .then(setSecretKey)
-        .catch((err) => {
-          alert(`生成设备密钥时发生错误: ${err}`);
       });
     }
   };

src/features/settings/settingsSelector.ts

@@ -1,8 +1,8 @@
+import { parseKuwoHeader } from '~/crypto/parseKuwo';
 import type { RootState } from '~/store';
 import { closestByLevenshtein } from '~/util/levenshtein';
 import { hasOwn } from '~/util/objects';
 import { kwm2StagingToProductionKey } from './keyFormats';
-import type { ParseKuwoHeaderResponse } from '~/decrypt-worker/types.ts';
 
 export const selectIsSettingsNotSaved = (state: RootState) => state.settings.dirty;
 
@@ -31,16 +31,14 @@ export const selectQMCv2KeyByFileName = (state: RootState, name: string): string
   return ekey;
 };
 
-export const selectKWMv2Key = (state: RootState, hdr: ParseKuwoHeaderResponse): string | undefined => {
+export const selectKWMv2Key = (state: RootState, headerView: DataView): string | undefined => {
+  const hdr = parseKuwoHeader(headerView);
   if (!hdr) {
     return;
   }
 
-  const quality = String(hdr.qualityId);
-  const rid = String(hdr.resourceId);
-
   const keys = selectFinalKWMv2Keys(state);
-  const lookupKey = kwm2StagingToProductionKey({ id: '', ekey: '', quality, rid });
+  const lookupKey = kwm2StagingToProductionKey({ id: '', ekey: '', quality: hdr.quality, rid: hdr.rid });
 
   let ekey: string | undefined;
   if (hasOwn(keys, lookupKey)) {

src/util/MMKVParser.ts

@@ -1,5 +1,5 @@
 import { bytesToUTF8String } from '~/decrypt-worker/util/utf8Encoder';
-import { formatHex } from './hex.ts';
+import { formatHex } from './formatHex';
 
 export class MMKVParser {
   private offset = 4;

src/util/fnWrapper.ts

@@ -1,13 +1,20 @@
-export async function wrapFunctionCall<R = unknown>(
+function isPromise<T = unknown>(p: unknown): p is Promise<T> {
-  pre: () => void,
+  return !!p && typeof p === 'object' && 'then' in p && 'catch' in p && 'finally' in p;
-  post: () => void,
+}
-  fn: () => Promise<R>,
+
-): Promise<R> {
+export function wrapFunctionCall<R = unknown>(pre: () => void, post: () => void, fn: () => R): R {
   pre();
 
   try {
-    return await fn();
+    const result = fn();
-  } finally {
+
+    if (isPromise(result)) {
+      result.finally(post);
+    }
+
+    return result;
+  } catch (e) {
     post();
+    throw e;
   }
 }

src/util/formatHex.ts

@@ -0,0 +1,3 @@
+export function formatHex(value: number, len = 8) {
+  return '0x' + (value | 0).toString(16).padStart(len, '0');
+}

src/util/go.ts

@@ -1,7 +0,0 @@
-export async function go<T = unknown, E = Error>(promise: Promise<T>): Promise<[T, null] | [null, E]> {
-  try {
-    return [await promise, null];
-  } catch (error: unknown) {
-    return [null, error as E];
-  }
-}

src/util/hex.ts

@@ -1,15 +0,0 @@
-export function formatHex(value: number, len = 8) {
-  return '0x' + (value | 0).toString(16).padStart(len, '0');
-}
-
-export function hex(value: Uint8Array): string {
-  return Array.from(value, (byte) => byte.toString(16).padStart(2, '0')).join('');
-}
-
-export function unhex(value: string): Uint8Array {
-  const bytes = [];
-  for (const [byte] of value.matchAll(/[0-9a-fA-F]{2}/g)) {
-    bytes.push(parseInt(byte, 16));
-  }
-  return new Uint8Array(bytes);
-}

src/util/logUtils.ts

@@ -1,6 +1,6 @@
 import { wrapFunctionCall } from './fnWrapper';
 
-export async function timedLogger<R = unknown>(label: string, fn: () => Promise<R>): Promise<R> {
+export function timedLogger<R = unknown>(label: string, fn: () => R): R {
   if (import.meta.env.VITE_ENABLE_PERF_LOG !== '1') {
     return fn();
   } else {
@@ -12,13 +12,13 @@ export async function timedLogger<R = unknown>(label: string, fn: () => Promise<
   }
 }
 
-export async function withGroupedLogs<R = unknown>(label: string, fn: () => Promise<R>): Promise<R> {
+export function withGroupedLogs<R = unknown>(label: string, fn: () => R): R {
   if (import.meta.env.VITE_ENABLE_PERF_LOG !== '1') {
     return fn();
   } else {
     return wrapFunctionCall(
       () => console.group(label),
-      () => console.groupEnd(),
+      () => (console.groupEnd as (label: string) => void)(label),
       () => timedLogger(`${label}/total`, fn),
     );
   }

vite.config.ts

@@ -34,13 +34,13 @@ export default defineConfig({
         'node_modules',
 
         // Allow pnpm to link.
-        process.env.LIB_UM_WASM_LOADER_DIR || '../lib_um_crypto_rust/um_wasm_loader',
+        process.env.LIB_PARAKEET_JS_DIR || '../libparakeet-js',
       ],
     },
   },
   base: './',
   optimizeDeps: {
-    exclude: ['@unlock-music/crypto', 'sql.js'],
+    exclude: ['@um/libparakeet', '@unlock-music/crypto', 'sql.js'],
   },
   plugins: [
     replace({
@@ -87,7 +87,7 @@ export default defineConfig({
       '~': path.resolve(__dirname, 'src'),
       '@nm': path.resolve(__dirname, 'node_modules'),
 
-      // workaround for vite, workbox (PWA)
+      // workaround for vite, workbox (PWA) and Emscripten transpiled parakeet lib (use of `import("module")`)
       module: path.resolve(__dirname, 'src', 'dummy.mjs'),
     },
   },