chore: bump version & update deps

adapt: decrypt/qmc for qmc-cache

.github/workflows/build.yml

@@ -20,14 +20,8 @@ on:
       - "package.json"
 
 
+
 jobs:
-  test-coverage:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Test Coverage
-        uses: ArtiomTr/jest-coverage-report-action@v2.0-rc.6
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
   build:
     runs-on: ubuntu-latest
     strategy:
@@ -43,30 +37,40 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Use Node.js 16.x
+      - name: Use Node.js 14.x
         uses: actions/setup-node@v2
         with:
-          node-version: "16"
+          node-version: "14"
 
       - name: Install Dependencies
-        run: npm ci
+        run: |
+          npm ci
+          npm run fix-compatibility
 
       - name: Build
-        run: npm run build ${{ matrix.BUILD_ARGS }}
+        env:
+          GZIP: "--best"
+        run: |
+          npm run build ${{ matrix.BUILD_ARGS }}
+          tar -czvf dist.tar.gz -C ./dist .
+
+      - name: Build Extension
+        if: ${{ matrix.BUILD_EXTENSION }}
+        run: |
+          npm run make-extension
+          cd dist
+          zip -rJ9 ../extension.zip *
+          cd ..
 
       - name: Publish artifact
         uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.build }}
-          path: ./dist
-
-      - name: Build Extension
-        if: ${{ matrix.BUILD_EXTENSION }}
-        run: npm run make-extension
+          name: unlock-music-${{ matrix.build }}.tar.gz
+          path: ./dist.tar.gz
 
       - name: Publish artifact - Extension
         if: ${{ matrix.BUILD_EXTENSION }}
         uses: actions/upload-artifact@v2
         with:
-          name: extension
-          path: ./dist
+          name: extension.zip
+          path: ./extension.zip

.github/workflows/release-build.yml

@@ -11,13 +11,15 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Use Node.js 16.x
+      - name: Use Node.js 14.x
         uses: actions/setup-node@v2
         with:
-          node-version: "16"
+          node-version: "14"
 
       - name: Install Dependencies
-        run: npm ci
+        run: |
+          npm ci
+          npm run fix-compatibility
 
       - name: Build Legacy
         env:

.gitignore

@@ -1,7 +1,6 @@
 .DS_Store
 node_modules
 /dist
-/coverage
 
 # local env files
 .env.local

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2019-2021 MengYX
+Copyright (c) 2019-2020 MengYX
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -22,6 +22,8 @@
 - [x] QQ音乐新格式 (实验性支持)
   - [x] .mflac
   - [x] [.mgg](https://github.com/ix64/unlock-music/issues/3)
+- [x] 网易云音乐格式 (.ncm)
+  - [x] 补全ncm的ID3/FlacMeta信息
 - [x] 虾米音乐格式 (.xm) (测试阶段)
 - [x] 酷我音乐格式 (.kwm) (测试阶段)
 - [x] 酷狗音乐格式 (

babel.config.js

@@ -1,7 +1,6 @@
 module.exports = {
     presets: [
-        '@vue/app',
-        '@babel/preset-typescript'
+        '@vue/app'
     ],
     plugins: [
         ["component", {

jest.config.js

@@ -1,5 +0,0 @@
-module.exports = {
-    moduleNameMapper: {
-        '@/(.*)': '<rootDir>/src/$1'
-    }
-};

make-extension.js

@@ -15,9 +15,6 @@ const manifest = JSON.parse(manifestRaw)
 const pkgRaw = fs.readFileSync("./package.json", "utf-8")
 const pkg = JSON.parse(pkgRaw)
 
-ver_str = pkg["version"]
-if (ver_str.startsWith("v")) ver_str = ver_str.slice(1)
-manifest["version"] = ver_str
-
+manifest["version"] = pkg["version"]
 fs.writeFileSync("./dist/manifest.json", JSON.stringify(manifest), "utf-8")
 console.log("Write: manifest.json")

package.json

@@ -1,6 +1,6 @@
 {
   "name": "unlock-music",
-  "version": "v1.10.0-beta.1",
+  "version": "v1.9.0",
   "updateInfo": "新增写入本地文件系统; 优化.kwm解锁; 支持.acc嗅探; 使用Typescript重构",
   "license": "MIT",
   "description": "Unlock encrypted music file in browser.",
@@ -10,15 +10,12 @@
   },
   "private": true,
   "scripts": {
-    "postinstall": "patch-package",
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
-    "test": "jest",
+    "fix-compatibility": "node ./src/fix-compatibility.js",
     "make-extension": "node ./make-extension.js"
   },
   "dependencies": {
-    "@babel/preset-typescript": "^7.16.5",
-    "@jixun/qmc2-crypto": "^0.0.5-R4",
     "base64-js": "^1.5.1",
     "browser-id3-writer": "^4.4.0",
     "core-js": "^3.16.0",
@@ -27,27 +24,23 @@
     "iconv-lite": "^0.6.3",
     "jimp": "^0.16.1",
     "metaflac-js": "^1.0.5",
-    "music-metadata": "7.9.0",
-    "music-metadata-browser": "2.2.7",
+    "music-metadata-browser": "^2.4.3",
     "register-service-worker": "^1.7.2",
     "threads": "^1.6.5",
     "vue": "^2.6.14"
   },
   "devDependencies": {
     "@types/crypto-js": "^4.0.2",
-    "@types/jest": "^27.0.3",
     "@vue/cli-plugin-babel": "^4.5.13",
     "@vue/cli-plugin-pwa": "^4.5.13",
     "@vue/cli-plugin-typescript": "^4.5.13",
     "@vue/cli-service": "^4.5.13",
     "babel-plugin-component": "^1.1.1",
-    "jest": "^27.4.5",
-    "patch-package": "^6.4.7",
-    "sass": "^1.38.1",
+    "node-sass": "^5.0.0",
     "sass-loader": "^10.2.0",
     "semver": "^7.3.5",
     "threads-plugin": "^1.4.0",
-    "typescript": "^4.5.4",
+    "typescript": "~4.1.6",
     "vue-cli-plugin-element": "^1.0.1",
     "vue-template-compiler": "^2.6.14"
   }

patches/threads+1.7.0.patch

@@ -1,11 +0,0 @@
-diff --git a/node_modules/threads/worker.mjs b/node_modules/threads/worker.mjs
-index c53ac7d..619007b 100644
---- a/node_modules/threads/worker.mjs
-+++ b/node_modules/threads/worker.mjs
-@@ -1,4 +1,5 @@
--import WorkerContext from "./dist/worker/index.js"
-+// Workaround: use of import seems to break minifier.
-+const WorkerContext = require("./dist/worker/index.js")
- 
- export const expose = WorkerContext.expose
- export const registerSerializer = WorkerContext.registerSerializer

public/index.html

@@ -6,7 +6,7 @@
     <meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible">
     <meta content="width=device-width,initial-scale=1.0" name="viewport">
     <title>音乐解锁</title>
-    <meta content="音乐,解锁,qmc,mgg,mflac,qq音乐,加密" name="keywords"/>
+    <meta content="音乐,解锁,ncm,qmc,mgg,mflac,qq音乐,网易云音乐,加密" name="keywords"/>
     <meta content="音乐解锁 - 在任何设备上解锁已购的加密音乐！" name="description"/>
     <script src="./ixarea-stats.js"></script>
     <!--@formatter:off-->

src/App.vue

@@ -10,7 +10,7 @@
                 <a href="https://github.com/ix64/unlock-music/wiki/使用提示" target="_blank">使用提示</a>
             </el-row>
             <el-row>
-                目前支持 QQ音乐(qmc, mflac, mgg), 酷狗音乐(kgm), 虾米音乐(xm), 酷我音乐(.kwm)
+                目前支持网易云音乐(ncm), QQ音乐(qmc, mflac, mgg), 酷狗音乐(kgm), 虾米音乐(xm), 酷我音乐(.kwm)
                 <a href="https://github.com/ix64/unlock-music/blob/master/README.md" target="_blank">更多</a>。
             </el-row>
             <el-row>

src/decrypt/common.ts

@@ -1,3 +1,5 @@
+import {Decrypt as NcmDecrypt} from "@/decrypt/ncm";
+import {Decrypt as NcmCacheDecrypt} from "@/decrypt/ncmcache";
 import {Decrypt as XmDecrypt} from "@/decrypt/xm";
 import {Decrypt as QmcDecrypt} from "@/decrypt/qmc";
 import {Decrypt as QmcCacheDecrypt} from "@/decrypt/qmccache";
@@ -13,6 +15,12 @@ export async function CommonDecrypt(file: FileInfo): Promise<DecryptResult> {
     const raw = SplitFilename(file.name)
     let rt_data: DecryptResult;
     switch (raw.ext) {
+        case "ncm":// Netease Mp3/Flac
+            rt_data = await NcmDecrypt(file.raw, raw.name, raw.ext);
+            break;
+        case "uc":// Netease Cache
+            rt_data = await NcmCacheDecrypt(file.raw, raw.name, raw.ext);
+            break;
         case "kwm":// Kuwo Mp3/Flac
             rt_data = await KwmDecrypt(file.raw, raw.name, raw.ext);
             break
@@ -38,10 +46,8 @@ export async function CommonDecrypt(file: FileInfo): Promise<DecryptResult> {
         case "tkm"://QQ Music Accompaniment M4a
         case "bkcmp3"://Moo Music Mp3
         case "bkcflac"://Moo Music Flac
-        case "mflac"://QQ Music New Flac
-        case "mflac0"://QQ Music New Flac
-        case "mgg": //QQ Music New Ogg
-        case "mgg1": //QQ Music New Ogg
+        case "mflac"://QQ Music Desktop Flac
+        case "mgg": //QQ Music Desktop Ogg
         case "666c6163"://QQ Music Weiyun Flac
         case "6d7033"://QQ Music Weiyun Mp3
         case "6f6767"://QQ Music Weiyun Ogg

src/decrypt/kgm.ts

@@ -5,7 +5,7 @@ import {
     GetCoverFromFile,
     GetMetaFromFile,
     SniffAudioExt
-} from "@/decrypt/utils";
+} from "@/decrypt/utils.ts";
 import {parseBlob as metaParseBlob} from "music-metadata-browser";
 import {DecryptResult} from "@/decrypt/entity";
 import config from "@/../package.json"

src/decrypt/kwm.ts

@@ -5,8 +5,8 @@ import {
     GetCoverFromFile,
     GetMetaFromFile,
     SniffAudioExt
-} from "@/decrypt/utils";
-import {Decrypt as RawDecrypt} from "@/decrypt/raw";
+} from "@/decrypt/utils.ts";
+import {Decrypt as RawDecrypt} from "@/decrypt/raw.ts";
 
 import {parseBlob as metaParseBlob} from "music-metadata-browser";
 import {DecryptResult} from "@/decrypt/entity";

src/decrypt/ncm.ts

@@ -0,0 +1,243 @@
+import {
+    AudioMimeType,
+    BytesHasPrefix,
+    GetArrayBuffer,
+    GetImageFromURL,
+    GetMetaFromFile, IMusicMeta,
+    SniffAudioExt,
+    WriteMetaToFlac,
+    WriteMetaToMp3
+} from "@/decrypt/utils.ts";
+import {parseBlob as metaParseBlob} from "music-metadata-browser";
+import jimp from 'jimp';
+
+import AES from "crypto-js/aes";
+import PKCS7 from "crypto-js/pad-pkcs7";
+import ModeECB from "crypto-js/mode-ecb";
+import WordArray from "crypto-js/lib-typedarrays";
+import Base64 from "crypto-js/enc-base64";
+import EncUTF8 from "crypto-js/enc-utf8";
+import EncHex from "crypto-js/enc-hex";
+
+import {DecryptResult} from "@/decrypt/entity";
+
+const CORE_KEY = EncHex.parse("687a4852416d736f356b496e62617857");
+const META_KEY = EncHex.parse("2331346C6A6B5F215C5D2630553C2728");
+const MagicHeader = [0x43, 0x54, 0x45, 0x4E, 0x46, 0x44, 0x41, 0x4D];
+
+
+export async function Decrypt(file: File, raw_filename: string, _: string): Promise<DecryptResult> {
+    return (new NcmDecrypt(await GetArrayBuffer(file), raw_filename)).decrypt()
+}
+
+
+interface NcmMusicMeta {
+    //musicId: number
+    musicName?: string
+    artist?: Array<string | number>[]
+    format?: string
+    album?: string
+    albumPic?: string
+}
+
+interface NcmDjMeta {
+    mainMusic: NcmMusicMeta
+}
+
+
+class NcmDecrypt {
+    raw: ArrayBuffer
+    view: DataView
+    offset: number = 0
+    filename: string
+    format: string = ""
+    mime: string = ""
+    audio?: Uint8Array
+    blob?: Blob
+    oriMeta?: NcmMusicMeta
+    newMeta?: IMusicMeta
+    image?: { mime: string, buffer: ArrayBuffer, url: string }
+
+    constructor(buf: ArrayBuffer, filename: string) {
+        const prefix = new Uint8Array(buf, 0, 8)
+        if (!BytesHasPrefix(prefix, MagicHeader)) throw Error("此ncm文件已损坏")
+        this.offset = 10
+        this.raw = buf
+        this.view = new DataView(buf)
+        this.filename = filename
+    }
+
+    _getKeyData(): Uint8Array {
+        const keyLen = this.view.getUint32(this.offset, true);
+        this.offset += 4;
+        const cipherText = new Uint8Array(this.raw, this.offset, keyLen)
+            .map(uint8 => uint8 ^ 0x64);
+        this.offset += keyLen;
+
+        const plainText = AES.decrypt(
+            // @ts-ignore
+            {ciphertext: WordArray.create(cipherText)},
+            CORE_KEY,
+            {mode: ModeECB, padding: PKCS7}
+        );
+
+        const result = new Uint8Array(plainText.sigBytes);
+
+        const words = plainText.words;
+        const sigBytes = plainText.sigBytes;
+        for (let i = 0; i < sigBytes; i++) {
+            result[i] = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
+        }
+
+        return result.slice(17)
+    }
+
+    _getKeyBox(): Uint8Array {
+        const keyData = this._getKeyData()
+        const box = new Uint8Array(Array(256).keys());
+
+        const keyDataLen = keyData.length;
+
+        let j = 0;
+
+        for (let i = 0; i < 256; i++) {
+            j = (box[i] + j + keyData[i % keyDataLen]) & 0xff;
+            [box[i], box[j]] = [box[j], box[i]];
+        }
+
+        return box.map((_, i, arr) => {
+            i = (i + 1) & 0xff;
+            const si = arr[i];
+            const sj = arr[(i + si) & 0xff];
+            return arr[(si + sj) & 0xff];
+        });
+    }
+
+    _getMetaData(): NcmMusicMeta {
+        const metaDataLen = this.view.getUint32(this.offset, true);
+        this.offset += 4;
+        if (metaDataLen === 0) return {};
+
+        const cipherText = new Uint8Array(this.raw, this.offset, metaDataLen)
+            .map(data => data ^ 0x63);
+        this.offset += metaDataLen;
+
+        WordArray.create()
+        const plainText = AES.decrypt(
+            // @ts-ignore
+            {
+                ciphertext: Base64.parse(
+                    // @ts-ignore
+                    WordArray.create(cipherText.slice(22)).toString(EncUTF8)
+                )
+            },
+            META_KEY,
+            {mode: ModeECB, padding: PKCS7}
+        ).toString(EncUTF8);
+
+        const labelIndex = plainText.indexOf(":");
+        let result: NcmMusicMeta;
+        if (plainText.slice(0, labelIndex) === "dj") {
+            const tmp: NcmDjMeta = JSON.parse(plainText.slice(labelIndex + 1));
+            result = tmp.mainMusic;
+        } else {
+            result = JSON.parse(plainText.slice(labelIndex + 1));
+        }
+        if (!!result.albumPic) {
+            result.albumPic = result.albumPic.replace("http://", "https://") + "?param=500y500"
+        }
+        return result
+    }
+
+    _getAudio(keyBox: Uint8Array): Uint8Array {
+        this.offset += this.view.getUint32(this.offset + 5, true) + 13
+        const audioData = new Uint8Array(this.raw, this.offset)
+        let lenAudioData = audioData.length
+        for (let cur = 0; cur < lenAudioData; ++cur) audioData[cur] ^= keyBox[cur & 0xff]
+        return audioData
+    }
+
+    async _buildMeta() {
+        if (!this.oriMeta) throw Error("invalid sequence")
+
+        const info = GetMetaFromFile(this.filename, this.oriMeta.musicName)
+
+        // build artists
+        let artists: string[] = [];
+        if (!!this.oriMeta.artist) {
+            this.oriMeta.artist.forEach(arr => artists.push(<string>arr[0]));
+        }
+
+        if (artists.length === 0 && !!info.artist) {
+            artists = info.artist.split(',')
+                .map(val => val.trim()).filter(val => val != "");
+        }
+
+        if (this.oriMeta.albumPic) try {
+            this.image = await GetImageFromURL(this.oriMeta.albumPic)
+            while (this.image && this.image.buffer.byteLength >= 1 << 24) {
+                let img = await jimp.read(Buffer.from(this.image.buffer))
+                await img.resize(Math.round(img.getHeight() / 2), jimp.AUTO)
+                this.image.buffer = await img.getBufferAsync("image/jpeg")
+            }
+        } catch (e) {
+            console.log("get cover image failed", e)
+        }
+
+
+        this.newMeta = {title: info.title, artists, album: this.oriMeta.album, picture: this.image?.buffer}
+    }
+
+    async _writeMeta() {
+        if (!this.audio || !this.newMeta) throw Error("invalid sequence")
+
+        if (!this.blob) this.blob = new Blob([this.audio], {type: this.mime})
+        const ori = await metaParseBlob(this.blob);
+
+        let shouldWrite = !ori.common.album && !ori.common.artists && !ori.common.title
+        if (shouldWrite || this.newMeta.picture) {
+            if (this.format === "mp3") {
+                this.audio = WriteMetaToMp3(Buffer.from(this.audio), this.newMeta, ori)
+            } else if (this.format === "flac") {
+                this.audio = WriteMetaToFlac(Buffer.from(this.audio), this.newMeta, ori)
+            } else {
+                console.info(`writing meta for ${this.format} is not being supported for now`)
+                return
+            }
+            this.blob = new Blob([this.audio], {type: this.mime})
+        }
+    }
+
+    gatherResult(): DecryptResult {
+        if (!this.newMeta) throw Error("bad sequence")
+        return {
+            title: this.newMeta.title,
+            artist: this.newMeta.artists?.join("; "),
+            ext: this.format,
+            album: this.newMeta.album,
+            picture: this.image?.url,
+            file: URL.createObjectURL(this.blob),
+            blob: this.blob as Blob,
+            mime: this.mime
+        }
+    }
+
+    async decrypt() {
+        const keyBox = this._getKeyBox()
+        this.oriMeta = this._getMetaData()
+        this.audio = this._getAudio(keyBox)
+        this.format = this.oriMeta.format || SniffAudioExt(this.audio)
+        this.mime = AudioMimeType[this.format]
+        await this._buildMeta()
+        try {
+            await this._writeMeta()
+        } catch (e) {
+            console.warn("write meta data failed", e)
+        }
+        return this.gatherResult()
+    }
+
+
+}
+
+

src/decrypt/ncmcache.ts

@@ -0,0 +1,29 @@
+import {AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils.ts";
+
+import {DecryptResult} from "@/decrypt/entity";
+
+import {parseBlob as metaParseBlob} from "music-metadata-browser";
+
+export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string)
+    : Promise<DecryptResult> {
+    const buffer = new Uint8Array(await GetArrayBuffer(file));
+    let length = buffer.length
+    for (let i = 0; i < length; i++) {
+        buffer[i] ^= 163
+    }
+    const ext = SniffAudioExt(buffer, raw_ext);
+    if (ext !== raw_ext) file = new Blob([buffer], {type: AudioMimeType[ext]})
+    const tag = await metaParseBlob(file);
+    const {title, artist} = GetMetaFromFile(raw_filename, tag.common.title, tag.common.artist)
+
+    return {
+        title,
+        artist,
+        ext,
+        album: tag.common.album,
+        picture: GetCoverFromFile(tag),
+        file: URL.createObjectURL(file),
+        blob: file,
+        mime: AudioMimeType[ext]
+    }
+}

src/decrypt/qmc.ts

@@ -1,139 +1,141 @@
-import {QmcStaticCipher} from "./qmc_cipher";
+import {QmcMask, QmcMaskDetectMflac, QmcMaskDetectMgg, QmcMaskGetDefault} from "./qmcMask";
+import {toByteArray as Base64Decode} from 'base64-js'
 import {
-  AudioMimeType,
-  GetArrayBuffer,
-  GetCoverFromFile,
-  GetImageFromURL,
-  GetMetaFromFile,
-  SniffAudioExt,
-  WriteMetaToFlac,
-  WriteMetaToMp3
-} from "@/decrypt/utils";
+    AudioMimeType,
+    GetArrayBuffer,
+    GetCoverFromFile,
+    GetImageFromURL,
+    GetMetaFromFile,
+    SniffAudioExt, WriteMetaToFlac, WriteMetaToMp3
+} from "@/decrypt/utils.ts";
 import {parseBlob as metaParseBlob} from "music-metadata-browser";
-import {DecryptQMCv2} from "./qmcv2";
 
 
 import iconv from "iconv-lite";
 import {DecryptResult} from "@/decrypt/entity";
-import {queryAlbumCover} from "@/utils/api";
+import {queryAlbumCover, queryKeyInfo, reportKeyUsage} from "@/utils/api";
 
 interface Handler {
-  ext: string
-  version: number
+    ext: string
+    detect: boolean
+
+    handler(data?: Uint8Array): QmcMask | undefined
 }
 
 export const HandlerMap: { [key: string]: Handler } = {
-  "mgg": {ext: "ogg", version: 2},
-  "mgg1": {ext: "ogg", version: 2},
-  "mflac": {ext: "flac", version: 2},
-  "mflac0": {ext: "flac", version: 2},
-
-  // qmcflac / qmcogg:
-  // 有可能是 v2 加密但混用同一个后缀名。
-  "qmcflac": {ext: "flac", version: 2},
-  "qmcogg": {ext: "ogg", version: 2},
-
-  "qmc0": {ext: "mp3", version: 1},
-  "qmc2": {ext: "ogg", version: 1},
-  "qmc3": {ext: "mp3", version: 1},
-  "bkcmp3": {ext: "mp3", version: 1},
-  "bkcflac": {ext: "flac", version: 1},
-  "tkm": {ext: "m4a", version: 1},
-  "666c6163": {ext: "flac", version: 1},
-  "6d7033": {ext: "mp3", version: 1},
-  "6f6767": {ext: "ogg", version: 1},
-  "6d3461": {ext: "m4a", version: 1},
-  "776176": {ext: "wav", version: 1}
+    "mgg": {handler: QmcMaskDetectMgg, ext: "ogg", detect: true},
+    "mflac": {handler: QmcMaskDetectMflac, ext: "flac", detect: true},
+    "mgg.cache": {handler: QmcMaskDetectMgg, ext: "ogg", detect: false},
+    "mflac.cache": {handler: QmcMaskDetectMflac, ext: "flac", detect: false},
+    "qmc0": {handler: QmcMaskGetDefault, ext: "mp3", detect: false},
+    "qmc2": {handler: QmcMaskGetDefault, ext: "ogg", detect: false},
+    "qmc3": {handler: QmcMaskGetDefault, ext: "mp3", detect: false},
+    "qmcogg": {handler: QmcMaskGetDefault, ext: "ogg", detect: false},
+    "qmcflac": {handler: QmcMaskGetDefault, ext: "flac", detect: false},
+    "bkcmp3": {handler: QmcMaskGetDefault, ext: "mp3", detect: false},
+    "bkcflac": {handler: QmcMaskGetDefault, ext: "flac", detect: false},
+    "tkm": {handler: QmcMaskGetDefault, ext: "m4a", detect: false},
+    "666c6163": {handler: QmcMaskGetDefault, ext: "flac", detect: false},
+    "6d7033": {handler: QmcMaskGetDefault, ext: "mp3", detect: false},
+    "6f6767": {handler: QmcMaskGetDefault, ext: "ogg", detect: false},
+    "6d3461": {handler: QmcMaskGetDefault, ext: "m4a", detect: false},
+    "776176": {handler: QmcMaskGetDefault, ext: "wav", detect: false}
 };
 
 export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string): Promise<DecryptResult> {
-  if (!(raw_ext in HandlerMap)) throw `Qmc cannot handle type: ${raw_ext}`;
-  const handler = HandlerMap[raw_ext];
-  let {version} = handler;
+    if (!(raw_ext in HandlerMap)) throw `Qmc cannot handle type: ${raw_ext}`;
+    const handler = HandlerMap[raw_ext];
 
-  const fileBuffer = await GetArrayBuffer(file);
-  let musicDecoded: Uint8Array | undefined;
-
-  if (version === 2) {
-    const v2Decrypted = await DecryptQMCv2(fileBuffer);
-    // 如果 v2 检测失败，降级到 v1 再尝试一次
-    if (v2Decrypted) {
-      musicDecoded = v2Decrypted;
+    const fileData = new Uint8Array(await GetArrayBuffer(file));
+    let audioData, seed, keyData;
+    if (handler.detect) {
+        const keyLen = new DataView(fileData.slice(fileData.length - 4).buffer).getUint32(0, true)
+        const keyPos = fileData.length - 4 - keyLen;
+        audioData = fileData.slice(0, keyPos);
+        seed = handler.handler(audioData);
+        keyData = fileData.slice(keyPos, keyPos + keyLen);
+        if (!seed) seed = await queryKey(keyData, raw_filename, raw_ext);
+        if (!seed) throw raw_ext + "格式仅提供实验性支持";
     } else {
-      version = 1;
+        audioData = fileData;
+        seed = handler.handler(audioData) as QmcMask;
+        if (!seed) throw raw_ext + "格式仅提供实验性支持";
     }
-  }
+    let musicDecoded = seed.Decrypt(audioData);
 
-  if (version === 1) {
-    const seed = new QmcStaticCipher();
-    musicDecoded = new Uint8Array(fileBuffer)
-    seed.decrypt(musicDecoded, 0);
-  } else if (!musicDecoded) {
-    throw new Error(`解密失败: ${raw_ext}`);
-  }
+    const ext = SniffAudioExt(musicDecoded, handler.ext);
+    const mime = AudioMimeType[ext];
 
-  const ext = SniffAudioExt(musicDecoded, handler.ext);
-  const mime = AudioMimeType[ext];
+    let musicBlob = new Blob([musicDecoded], {type: mime});
 
-  let musicBlob = new Blob([musicDecoded], {type: mime});
-
-  const musicMeta = await metaParseBlob(musicBlob);
-  for (let metaIdx in musicMeta.native) {
-    if (!musicMeta.native.hasOwnProperty(metaIdx)) continue
-    if (musicMeta.native[metaIdx].some(item => item.id === "TCON" && item.value === "(12)")) {
-      console.warn("try using gbk encoding to decode meta")
-      musicMeta.common.artist = iconv.decode(new Buffer(musicMeta.common.artist ?? ""), "gbk");
-      musicMeta.common.title = iconv.decode(new Buffer(musicMeta.common.title ?? ""), "gbk");
-      musicMeta.common.album = iconv.decode(new Buffer(musicMeta.common.album ?? ""), "gbk");
-    }
-  }
-
-  const info = GetMetaFromFile(raw_filename, musicMeta.common.title, musicMeta.common.artist)
-
-  let imgUrl = GetCoverFromFile(musicMeta);
-  if (!imgUrl) {
-    imgUrl = await getCoverImage(info.title, info.artist, musicMeta.common.album);
-    if (imgUrl) {
-      const imageInfo = await GetImageFromURL(imgUrl);
-      if (imageInfo) {
-        imgUrl = imageInfo.url
-        try {
-          const newMeta = {picture: imageInfo.buffer, title: info.title, artists: info.artist?.split(" _ ")}
-          if (ext === "mp3") {
-            musicDecoded = WriteMetaToMp3(Buffer.from(musicDecoded), newMeta, musicMeta)
-            musicBlob = new Blob([musicDecoded], {type: mime});
-          } else if (ext === 'flac') {
-            musicDecoded = WriteMetaToFlac(Buffer.from(musicDecoded), newMeta, musicMeta)
-            musicBlob = new Blob([musicDecoded], {type: mime});
-          } else {
-            console.info("writing metadata for " + ext + " is not being supported for now")
-          }
-        } catch (e) {
-          console.warn("Error while appending cover image to file " + e)
+    const musicMeta = await metaParseBlob(musicBlob);
+    for (let metaIdx in musicMeta.native) {
+        if (!musicMeta.native.hasOwnProperty(metaIdx)) continue
+        if (musicMeta.native[metaIdx].some(item => item.id === "TCON" && item.value === "(12)")) {
+            console.warn("try using gbk encoding to decode meta")
+            musicMeta.common.artist = iconv.decode(new Buffer(musicMeta.common.artist ?? ""), "gbk");
+            musicMeta.common.title = iconv.decode(new Buffer(musicMeta.common.title ?? ""), "gbk");
+            musicMeta.common.album = iconv.decode(new Buffer(musicMeta.common.album ?? ""), "gbk");
         }
-      }
     }
-  }
-  return {
-    title: info.title,
-    artist: info.artist,
-    ext: ext,
-    album: musicMeta.common.album,
-    picture: imgUrl,
-    file: URL.createObjectURL(musicBlob),
-    blob: musicBlob,
-    mime: mime
-  }
+
+    const info = GetMetaFromFile(raw_filename, musicMeta.common.title, musicMeta.common.artist)
+    if (keyData) reportKeyUsage(keyData, seed.getMatrix128(),
+        raw_filename, raw_ext, info.title, info.artist, musicMeta.common.album).then().catch();
+
+    let imgUrl = GetCoverFromFile(musicMeta);
+    if (!imgUrl) {
+        imgUrl = await getCoverImage(info.title, info.artist, musicMeta.common.album);
+        if (imgUrl) {
+            const imageInfo = await GetImageFromURL(imgUrl);
+            if (imageInfo) {
+                imgUrl = imageInfo.url
+                try {
+                    const newMeta = {picture: imageInfo.buffer, title: info.title, artists: info.artist?.split(" _ ")}
+                    if (ext === "mp3") {
+                        musicDecoded = WriteMetaToMp3(Buffer.from(musicDecoded), newMeta, musicMeta)
+                        musicBlob = new Blob([musicDecoded], {type: mime});
+                    } else if (ext === 'flac') {
+                        musicDecoded = WriteMetaToFlac(Buffer.from(musicDecoded), newMeta, musicMeta)
+                        musicBlob = new Blob([musicDecoded], {type: mime});
+                    } else {
+                        console.info("writing metadata for " + ext + " is not being supported for now")
+                    }
+                } catch (e) {
+                    console.warn("Error while appending cover image to file " + e)
+                }
+            }
+        }
+    }
+    return {
+        title: info.title,
+        artist: info.artist,
+        ext: ext,
+        album: musicMeta.common.album,
+        picture: imgUrl,
+        file: URL.createObjectURL(musicBlob),
+        blob: musicBlob,
+        mime: mime
+    }
 }
 
 
+async function queryKey(keyData: Uint8Array, filename: string, format: string): Promise<QmcMask | undefined> {
+    try {
+        const data = await queryKeyInfo(keyData, filename, format)
+        return new QmcMask(Base64Decode(data.Matrix44));
+    } catch (e) {
+        console.warn(e);
+    }
+}
+
 async function getCoverImage(title: string, artist?: string, album?: string): Promise<string> {
-  const song_query_url = "https://stats.ixarea.com/apis" + "/music/qq-cover"
-  try {
-    const data = await queryAlbumCover(title, artist, album)
-    return `${song_query_url}/${data.Type}/${data.Id}`
-  } catch (e) {
-    console.warn(e);
-  }
-  return ""
+    const song_query_url = "https://stats.ixarea.com/apis" + "/music/qq-cover"
+    try {
+        const data = await queryAlbumCover(title, artist, album)
+        return `${song_query_url}/${data.Type}/${data.Id}`
+    } catch (e) {
+        console.warn(e);
+    }
+    return ""
 }

src/decrypt/qmcMask.ts

@@ -0,0 +1,206 @@
+import {BytesHasPrefix, FLAC_HEADER, OGG_HEADER} from "@/decrypt/utils.ts";
+
+const QMOggPublicHeader1 = [
+    0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
+    0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x1e, 0x01, 0x76, 0x6f, 0x72,
+    0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02, 0x44, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xee, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x01, 0x4f, 0x67, 0x67, 0x53, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00,
+    0xff, 0xff, 0xff, 0xff];
+const QMOggPublicHeader2 = [
+    0x03, 0x76, 0x6f, 0x72, 0x62, 0x69, 0x73, 0x2c, 0x00, 0x00, 0x00, 0x58, 0x69, 0x70, 0x68, 0x2e,
+    0x4f, 0x72, 0x67, 0x20, 0x6c, 0x69, 0x62, 0x56, 0x6f, 0x72, 0x62, 0x69, 0x73, 0x20, 0x49, 0x20,
+    0x32, 0x30, 0x31, 0x35, 0x30, 0x31, 0x30, 0x35, 0x20, 0x28, 0xe2, 0x9b, 0x84, 0xe2, 0x9b, 0x84,
+    0xe2, 0x9b, 0x84, 0xe2, 0x9b, 0x84, 0x29, 0xff, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x54,
+    0x49, 0x54, 0x4c, 0x45, 0x3d];
+const QMOggPublicConf1 = [
+    9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
+    0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 6, 3, 3, 3, 3, 6, 6, 6, 6,
+    3, 3, 3, 3, 6, 6, 6, 6, 6, 9, 9, 9, 9, 9, 9, 9,
+    9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9,
+    0, 0, 0, 0];
+const QMOggPublicConf2 = [
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+    3, 3, 3, 3, 3, 3, 3, 0, 1, 3, 3, 0, 1, 3, 3, 3,
+    3, 3, 3, 3, 3];
+const QMCDefaultMaskMatrix = [
+    0xde, 0x51, 0xfa, 0xc3, 0x4a, 0xd6, 0xca, 0x90,
+    0x7e, 0x67, 0x5e, 0xf7, 0xd5, 0x52, 0x84, 0xd8,
+    0x47, 0x95, 0xbb, 0xa1, 0xaa, 0xc6, 0x66, 0x23,
+    0x92, 0x62, 0xf3, 0x74, 0xa1, 0x9f, 0xf4, 0xa0,
+    0x1d, 0x3f, 0x5b, 0xf0, 0x13, 0x0e, 0x09, 0x3d,
+    0xf9, 0xbc, 0x00, 0x11];
+
+
+const AllMapping: number[][] = [];
+const Mask128to44: number[] = [];
+
+(function () {
+    for (let i = 0; i < 128; i++) {
+        let realIdx = (i * i + 27) % 256
+        if (realIdx in AllMapping) {
+            AllMapping[realIdx].push(i)
+        } else {
+            AllMapping[realIdx] = [i]
+        }
+    }
+
+    let idx44 = 0
+    AllMapping.forEach(all128 => {
+        all128.forEach(_i128 => {
+            Mask128to44[_i128] = idx44
+        })
+        idx44++
+    })
+})();
+
+
+export class QmcMask {
+    private readonly Matrix128: number[];
+
+    constructor(matrix: number[] | Uint8Array) {
+        if (matrix instanceof Uint8Array) matrix = Array.from(matrix)
+        if (matrix.length === 44) {
+            this.Matrix128 = this._generate128(matrix)
+        } else if (matrix.length === 128) {
+            this.Matrix128 = matrix
+        } else {
+            throw Error("invalid mask length")
+        }
+    }
+
+    getMatrix128() {
+        return this.Matrix128
+    }
+
+    getMatrix44(): number[] {
+        const matrix44: number[] = []
+        let idxI44 = 0
+        AllMapping.forEach(it256 => {
+            let it256Len = it256.length
+            for (let i = 1; i < it256Len; i++) {
+                if (this.Matrix128[it256[0]] !== this.Matrix128[it256[i]]) {
+                    throw "decode mask-128 to mask-44 failed"
+                }
+            }
+            matrix44[idxI44] = this.Matrix128[it256[0]]
+            idxI44++
+        })
+        return matrix44
+    }
+
+    Decrypt(data: Uint8Array) {
+        if (!this.Matrix128) throw Error("bad call sequence")
+        let dst = data.slice(0);
+        let index = -1;
+        let maskIdx = -1;
+        for (let cur = 0; cur < data.length; cur++) {
+            index++;
+            maskIdx++;
+            if (index === 0x8000 || (index > 0x8000 && (index + 1) % 0x8000 === 0)) {
+                index++;
+                maskIdx++;
+            }
+            if (maskIdx >= 128) maskIdx -= 128;
+            dst[cur] ^= this.Matrix128[maskIdx];
+        }
+        return dst;
+    }
+
+    private _generate128(matrix44: number[]): number[] {
+        const matrix128: number[] = []
+        let idx44 = 0
+        AllMapping.forEach(it256 => {
+            it256.forEach(m => {
+                matrix128[m] = matrix44[idx44]
+            })
+            idx44++
+        })
+        return matrix128
+    }
+}
+
+export function QmcMaskGetDefault() {
+    return new QmcMask(QMCDefaultMaskMatrix)
+}
+
+export function QmcMaskDetectMflac(data: Uint8Array) {
+    let search_len = Math.min(0x8000, data.length), mask;
+    for (let block_idx = 0; block_idx < search_len; block_idx += 128) {
+        try {
+            mask = new QmcMask(data.slice(block_idx, block_idx + 128));
+            if (BytesHasPrefix(mask.Decrypt(data.slice(0, FLAC_HEADER.length)), FLAC_HEADER)) {
+                break;
+            }
+        } catch (e) {
+        }
+    }
+    return mask;
+}
+
+export function QmcMaskDetectMgg(data: Uint8Array) {
+    if (data.length < 0x100) return
+    let matrixConfidence: { [key: number]: { [key: number]: number } } = {};
+    for (let i = 0; i < 44; i++) matrixConfidence[i] = {};
+
+    const page2 = data[0x54] ^ data[0xC] ^ QMOggPublicHeader1[0xC];
+    const spHeader = QmcGenerateOggHeader(page2)
+    const spConf = QmcGenerateOggConf(page2)
+
+    for (let idx128 = 0; idx128 < spHeader.length; idx128++) {
+        if (spConf[idx128] === 0) continue;
+        let idx44 = Mask128to44[idx128 % 128];
+        let _m = data[idx128] ^ spHeader[idx128]
+        let confidence = spConf[idx128];
+        if (_m in matrixConfidence[idx44]) {
+            matrixConfidence[idx44][_m] += confidence
+        } else {
+            matrixConfidence[idx44][_m] = confidence
+        }
+    }
+    let matrix = [];
+    try {
+        for (let i = 0; i < 44; i++)
+            matrix[i] = calcMaskFromConfidence(matrixConfidence[i]);
+    } catch (e) {
+        return;
+    }
+    const mask = new QmcMask(matrix);
+    if (!BytesHasPrefix(mask.Decrypt(data.slice(0, OGG_HEADER.length)), OGG_HEADER)) {
+        return;
+    }
+    return mask;
+}
+
+
+function calcMaskFromConfidence(confidence: { [key: number]: number }) {
+    const count = Object.keys(confidence).length
+    if (count === 0) throw "can not match at least one key";
+    if (count > 1) console.warn("There are 2 potential value for the mask!")
+    let result = ""
+    let conf = 0
+    for (let idx in confidence) {
+        if (confidence[idx] > conf) {
+            result = idx;
+            conf = confidence[idx];
+        }
+    }
+    return Number(result)
+}
+
+function QmcGenerateOggHeader(page2: number) {
+    let spec = [page2, 0xFF]
+    for (let i = 2; i < page2; i++) spec.push(0xFF)
+    spec.push(0xFF)
+    return QMOggPublicHeader1.concat(spec, QMOggPublicHeader2)
+}
+
+function QmcGenerateOggConf(page2: number) {
+    let specConf = [6, 0]
+    for (let i = 2; i < page2; i++) specConf.push(4)
+    specConf.push(0)
+    return QMOggPublicConf1.concat(specConf, QMOggPublicConf2)
+}

src/decrypt/qmc_cipher.test.ts

@@ -1,27 +0,0 @@
-import {QmcStaticCipher} from "@/decrypt/qmc_cipher";
-
-test("static cipher [0x7ff8,0x8000) ", () => {
-  const expected = new Uint8Array([
-    0xD8, 0x52, 0xF7, 0x67, 0x90, 0xCA, 0xD6, 0x4A,
-    0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52, 0xD8,
-  ])
-
-  const c = new QmcStaticCipher()
-  const buf = new Uint8Array(16)
-  c.decrypt(buf, 0x7ff8)
-
-  expect(buf).toStrictEqual(expected)
-})
-
-test("static cipher [0,0x10) ", () => {
-  const expected = new Uint8Array([
-    0xC3, 0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52,
-    0xD8, 0xA1, 0x66, 0x62, 0x9F, 0x5B, 0x09, 0x00,
-  ])
-
-  const c = new QmcStaticCipher()
-  const buf = new Uint8Array(16)
-  c.decrypt(buf, 0)
-
-  expect(buf).toStrictEqual(expected)
-})

src/decrypt/qmc_cipher.ts

@@ -1,53 +0,0 @@
-const staticCipherBox = new Uint8Array([
-  0x77, 0x48, 0x32, 0x73, 0xDE, 0xF2, 0xC0, 0xC8, //0x00
-  0x95, 0xEC, 0x30, 0xB2, 0x51, 0xC3, 0xE1, 0xA0, //0x08
-  0x9E, 0xE6, 0x9D, 0xCF, 0xFA, 0x7F, 0x14, 0xD1, //0x10
-  0xCE, 0xB8, 0xDC, 0xC3, 0x4A, 0x67, 0x93, 0xD6, //0x18
-  0x28, 0xC2, 0x91, 0x70, 0xCA, 0x8D, 0xA2, 0xA4, //0x20
-  0xF0, 0x08, 0x61, 0x90, 0x7E, 0x6F, 0xA2, 0xE0, //0x28
-  0xEB, 0xAE, 0x3E, 0xB6, 0x67, 0xC7, 0x92, 0xF4, //0x30
-  0x91, 0xB5, 0xF6, 0x6C, 0x5E, 0x84, 0x40, 0xF7, //0x38
-  0xF3, 0x1B, 0x02, 0x7F, 0xD5, 0xAB, 0x41, 0x89, //0x40
-  0x28, 0xF4, 0x25, 0xCC, 0x52, 0x11, 0xAD, 0x43, //0x48
-  0x68, 0xA6, 0x41, 0x8B, 0x84, 0xB5, 0xFF, 0x2C, //0x50
-  0x92, 0x4A, 0x26, 0xD8, 0x47, 0x6A, 0x7C, 0x95, //0x58
-  0x61, 0xCC, 0xE6, 0xCB, 0xBB, 0x3F, 0x47, 0x58, //0x60
-  0x89, 0x75, 0xC3, 0x75, 0xA1, 0xD9, 0xAF, 0xCC, //0x68
-  0x08, 0x73, 0x17, 0xDC, 0xAA, 0x9A, 0xA2, 0x16, //0x70
-  0x41, 0xD8, 0xA2, 0x06, 0xC6, 0x8B, 0xFC, 0x66, //0x78
-  0x34, 0x9F, 0xCF, 0x18, 0x23, 0xA0, 0x0A, 0x74, //0x80
-  0xE7, 0x2B, 0x27, 0x70, 0x92, 0xE9, 0xAF, 0x37, //0x88
-  0xE6, 0x8C, 0xA7, 0xBC, 0x62, 0x65, 0x9C, 0xC2, //0x90
-  0x08, 0xC9, 0x88, 0xB3, 0xF3, 0x43, 0xAC, 0x74, //0x98
-  0x2C, 0x0F, 0xD4, 0xAF, 0xA1, 0xC3, 0x01, 0x64, //0xA0
-  0x95, 0x4E, 0x48, 0x9F, 0xF4, 0x35, 0x78, 0x95, //0xA8
-  0x7A, 0x39, 0xD6, 0x6A, 0xA0, 0x6D, 0x40, 0xE8, //0xB0
-  0x4F, 0xA8, 0xEF, 0x11, 0x1D, 0xF3, 0x1B, 0x3F, //0xB8
-  0x3F, 0x07, 0xDD, 0x6F, 0x5B, 0x19, 0x30, 0x19, //0xC0
-  0xFB, 0xEF, 0x0E, 0x37, 0xF0, 0x0E, 0xCD, 0x16, //0xC8
-  0x49, 0xFE, 0x53, 0x47, 0x13, 0x1A, 0xBD, 0xA4, //0xD0
-  0xF1, 0x40, 0x19, 0x60, 0x0E, 0xED, 0x68, 0x09, //0xD8
-  0x06, 0x5F, 0x4D, 0xCF, 0x3D, 0x1A, 0xFE, 0x20, //0xE0
-  0x77, 0xE4, 0xD9, 0xDA, 0xF9, 0xA4, 0x2B, 0x76, //0xE8
-  0x1C, 0x71, 0xDB, 0x00, 0xBC, 0xFD, 0x0C, 0x6C, //0xF0
-  0xA5, 0x47, 0xF7, 0xF6, 0x00, 0x79, 0x4A, 0x11, //0xF8
-])
-
-interface streamCipher {
-  decrypt(buf: Uint8Array, offset: number): void
-}
-
-export class QmcStaticCipher implements streamCipher {
-
-  public getMask(offset: number) {
-    if (offset > 0x7FFF) offset %= 0x7FFF
-    return staticCipherBox[(offset * offset + 27) & 0xff]
-  }
-
-  public decrypt(buf: Uint8Array, offset: number) {
-    for (let i = 0; i < buf.length; i++) {
-      buf[i] ^= this.getMask(offset + i)
-    }
-  }
-}
-

src/decrypt/qmccache.ts

@@ -5,7 +5,7 @@ import {
     GetMetaFromFile,
     SniffAudioExt,
     SplitFilename
-} from "@/decrypt/utils";
+} from "@/decrypt/utils.ts";
 
 import {Decrypt as QmcDecrypt, HandlerMap} from "@/decrypt/qmc";
 

src/decrypt/qmcv2.ts

@@ -1,102 +0,0 @@
-import QMCCryptoModule from '@jixun/qmc2-crypto/QMC2-wasm-bundle';
-
-// 检测文件末端使用的缓冲区大小
-const DETECTION_SIZE = 40;
-
-// 每次处理 2M 的数据
-const DECRYPTION_BUF_SIZE = 2 * 1024 * 1024;
-
-function MergeUint8Array(array: Uint8Array[]): Uint8Array {
-  let length = 0;
-  array.forEach(item => {
-    length += item.length;
-  });
-
-  let mergedArray = new Uint8Array(length);
-  let offset = 0;
-  array.forEach(item => {
-    mergedArray.set(item, offset);
-    offset += item.length;
-  });
-
-  return mergedArray;
-}
-
-/**
- * 解密一个 QMC2 加密的文件。
- *
- * 如果检测并解密成功，返回解密后的 Uint8Array 数据。
- * @param  {ArrayBuffer} mggBlob 读入的文件 Blob
- * @return {Promise<Uint8Array|false>}
- */
-export async function DecryptQMCv2(mggBlob: ArrayBuffer) {
-  // 初始化模组
-  const QMCCrypto = await QMCCryptoModule();
-
-  // 申请内存块，并文件末端数据到 WASM 的内存堆
-  const detectionBuf = new Uint8Array(mggBlob.slice(-DETECTION_SIZE));
-  const pDetectionBuf = QMCCrypto._malloc(detectionBuf.length);
-  QMCCrypto.writeArrayToMemory(detectionBuf, pDetectionBuf);
-
-  // 检测结果内存块
-  const pDetectionResult = QMCCrypto._malloc(QMCCrypto.sizeof_qmc_detection());
-
-  // 进行检测
-  const detectOK = QMCCrypto.detectKeyEndPosition(
-    pDetectionResult,
-    pDetectionBuf,
-    detectionBuf.length
-  );
-
-  // 提取结构体内容：
-  // (pos: i32; len: i32; error: char[??])
-  const position = QMCCrypto.getValue(pDetectionResult, "i32");
-  const len = QMCCrypto.getValue(pDetectionResult + 4, "i32");
-
-  // 释放内存
-  QMCCrypto._free(pDetectionBuf);
-  QMCCrypto._free(pDetectionResult);
-
-  if (!detectOK) {
-    return false;
-  }
-
-  // 计算解密后文件的大小。
-  // 之前得到的 position 为相对当前检测数据起点的偏移。
-  const decryptedSize = mggBlob.byteLength - DETECTION_SIZE + position;
-
-  // 提取嵌入到文件的 EKey
-  const ekey = new Uint8Array(
-    mggBlob.slice(decryptedSize, decryptedSize + len)
-  );
-
-  // 解码 UTF-8 数据到 string
-  const decoder = new TextDecoder();
-  const ekey_b64 = decoder.decode(ekey);
-
-  // 初始化加密与缓冲区
-  const hCrypto = QMCCrypto.createInstWidthEKey(ekey_b64);
-  const buf = QMCCrypto._malloc(DECRYPTION_BUF_SIZE);
-
-  const decryptedParts = [];
-  let offset = 0;
-  let bytesToDecrypt = decryptedSize;
-  while (bytesToDecrypt > 0) {
-    const blockSize = Math.min(bytesToDecrypt, DECRYPTION_BUF_SIZE);
-
-    // 解密一些片段
-    const blockData = new Uint8Array(
-      mggBlob.slice(offset, offset + blockSize)
-    );
-    QMCCrypto.writeArrayToMemory(blockData, buf);
-    QMCCrypto.decryptStream(hCrypto, buf, offset, blockSize);
-    decryptedParts.push(QMCCrypto.HEAPU8.slice(buf, buf + blockSize));
-
-    offset += blockSize;
-    bytesToDecrypt -= blockSize;
-  }
-  QMCCrypto._free(buf);
-  hCrypto.delete();
-
-  return MergeUint8Array(decryptedParts);
-}

src/decrypt/raw.ts

@@ -1,4 +1,4 @@
-import {AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils";
+import {AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils.ts";
 
 import {DecryptResult} from "@/decrypt/entity";
 

src/decrypt/tm.ts

@@ -1,5 +1,5 @@
 import {Decrypt as RawDecrypt} from "./raw";
-import {GetArrayBuffer} from "@/decrypt/utils";
+import {GetArrayBuffer} from "@/decrypt/utils.ts";
 import {DecryptResult} from "@/decrypt/entity";
 
 const TM_HEADER = [0x00, 0x00, 0x00, 0x20, 0x66, 0x74, 0x79, 0x70];

src/decrypt/xm.ts

@@ -1,6 +1,6 @@
 import {Decrypt as RawDecrypt} from "@/decrypt/raw";
 import {DecryptResult} from "@/decrypt/entity";
-import {AudioMimeType, BytesHasPrefix, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile} from "@/decrypt/utils";
+import {AudioMimeType, BytesHasPrefix, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile} from "@/decrypt/utils.ts";
 
 import {parseBlob as metaParseBlob} from "music-metadata-browser";
 

src/fix-compatibility.js

@@ -0,0 +1,25 @@
+//TODO: Use other method to fix this
+// !! Only Temporary Solution
+// it seems like that @babel/plugin-proposal-object-rest-spread not working
+// to fix up the compatibility for Edge 18 and some older Chromium
+// now manually edit the dependency files
+
+const fs = require('fs');
+const filePath = "./node_modules/file-type/core.js";
+const regReplace = /{\s*([a-zA-Z0-9:,\s]*),\s*\.\.\.([a-zA-Z0-9]*)\s*};/m;
+if (fs.existsSync(filePath)) {
+    console.log("File Found!");
+    let data = fs.readFileSync(filePath).toString();
+    const regResult = regReplace.exec(data);
+    if (regResult != null) {
+        data = data.replace(regResult[0],
+            "Object.assign({ " + regResult[1] + " }, " + regResult[2] + ");"
+        );
+        fs.writeFileSync(filePath, data);
+        console.log("Object rest spread in file-type fixed!");
+    } else {
+        console.log("No fix needed.");
+    }
+} else {
+    console.log("File Not Found!");
+}

tsconfig.json

@@ -14,8 +14,7 @@
     "sourceMap": true,
     "baseUrl": ".",
     "types": [
-      "webpack-env",
-      "jest"
+      "webpack-env"
     ],
     "paths": {
       "@/*": [