Use Universal Decoder for Qmc,Mgg,Mflac

src/decrypt/common.js

@@ -1,8 +1,6 @@
 const NcmDecrypt = require("./ncm");
 const QmcDecrypt = require("./qmc");
 const RawDecrypt = require("./raw");
-const MFlacDecrypt = require("./mflac");
-const MggDecrypt = require("./mgg");
 const TmDecrypt = require("./tm");
 
 
@@ -31,13 +29,9 @@ export async function CommonDecrypt(file) {
         case "tkm"://QQ Music Accompaniment M4a
         case "bkcmp3"://Moo Music Mp3
         case "bkcflac"://Moo Music Flac
-            rt_data = await QmcDecrypt.Decrypt(file.raw, raw_filename, raw_ext);
-            break;
         case "mflac"://QQ Music Desktop Flac
-            rt_data = await MFlacDecrypt.Decrypt(file.raw, raw_filename, raw_ext);
-            break;
-        case "mgg":
-            rt_data = await MggDecrypt.Decrypt(file.raw, raw_filename, raw_ext);
+        case "mgg": //QQ Music Desktop Ogg
+            rt_data = await QmcDecrypt.Decrypt(file.raw, raw_filename, raw_ext);
             break;
         case "tm2":// QQ Music IOS M4a
         case "tm6":// QQ Music IOS M4a

src/decrypt/mflac.js

@@ -1,55 +0,0 @@
-const musicMetadata = require("music-metadata-browser");
-import {GetArrayBuffer, GetCoverURL, GetFileInfo} from "./util"
-
-import * as mask from "./qmcmask"
-
-export async function Decrypt(file, raw_filename, raw_ext) {
-    // 获取扩展名
-    if (raw_ext !== "mflac") return {
-        status: false,
-        message: "File type is incorrect!",
-    };
-    // 读取文件
-    const fileBuffer = await GetArrayBuffer(file);
-    const audioData = new Uint8Array(fileBuffer.slice(0, -0x170));
-    //const audioDataLen = audioData.length;
-
-    // 转换数据
-    const seed = mask.QmcMaskDetectMflac(audioData);
-    if (seed === undefined) return {
-        status: false,
-        message: "此音乐无法解锁，目前mflac格式不提供完整支持",
-    };
-    const dec = seed.Decrypt(audioData);
-    // 导出
-    const musicData = new Blob([dec], {type: "audio/flac"});
-
-    // 读取Meta
-    let tag = await musicMetadata.parseBlob(musicData);
-    const info = GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
-    //reportKeyInfo(new Uint8Array(fileBuffer.slice(-0x170)), seed.mask128,
-    //    info.artist, info.title, tag.common.album, raw_filename);
-
-    // 返回
-    return {
-        status: true,
-        title: info.title,
-        artist: info.artist,
-        ext: 'flac',
-        album: tag.common.album,
-        picture: GetCoverURL(tag),
-        file: URL.createObjectURL(musicData),
-        mime: "audio/flac"
-    }
-}
-
-function reportKeyInfo(keyData, maskData, artist, title, album, filename) {
-    fetch("https://stats.ixarea.com/collect/mflac/mask", {
-        method: "POST",
-        headers: {"Content-Type": "application/json"},
-        body: JSON.stringify({
-            Mask: Array.from(maskData), Key: Array.from(keyData),
-            Artist: artist, Title: title, Album: album, Filename: filename
-        }),
-    }).then().catch()
-}

src/decrypt/mgg.js

@@ -1,60 +0,0 @@
-const musicMetadata = require("music-metadata-browser");
-const util = require("./util");
-
-import * as mask from "./qmcmask"
-
-//todo: combine qmc mflac mgg
-export async function Decrypt(file, raw_filename, raw_ext) {
-    // 获取扩展名
-    if (raw_ext !== "mgg") return {
-        status: false,
-        message: "File type is incorrect!",
-    };
-    // 读取文件
-    const fileBuffer = await util.GetArrayBuffer(file);
-    const audioData = new Uint8Array(fileBuffer.slice(0, -0x170));
-    const audioDataLen = audioData.length;
-    const keyData = new Uint8Array(fileBuffer.slice(-0x170));
-    const headData = new Uint8Array(fileBuffer.slice(0, 170));
-    let seed = mask.QmcMaskDetectMgg(headData);
-    if (seed === undefined) {
-        return {
-            status: false,
-            message: "此音乐无法解锁，目前mgg格式仅提供试验性支持",
-        };
-        /*try {
-            let resp = await queryKeyInfo(keyData, headData, raw_filename);
-            let data = await resp.json();
-            seed = mask.QmcMaskCreate128(data.Mask);
-        } catch (e) {}*/
-    }
-    const dec = seed.Decrypt(audioData);
-    // 导出
-    const musicData = new Blob([dec], {type: "audio/ogg"});
-
-    // 读取Meta
-    let tag = await musicMetadata.parseBlob(musicData);
-    const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
-
-    // 返回
-    return {
-        status: true,
-        title: info.title,
-        artist: info.artist,
-        ext: 'ogg',
-        album: tag.common.album,
-        picture: util.GetCoverURL(tag),
-        file: URL.createObjectURL(musicData),
-        mime: "audio/ogg"
-    }
-
-}
-
-
-function queryKeyInfo(keyData, headData, filename) {
-    return fetch("http://127.0.0.1:6580/mgg/query", {
-        method: "POST",
-        headers: {"Content-Type": "application/json"},
-        body: JSON.stringify({Key: Array.from(keyData), Head: Array.from(headData), Filename: filename}),
-    })
-}

src/decrypt/qmc.js

@@ -1,46 +1,78 @@
+import {AudioMimeType, GetArrayBuffer, GetCoverURL, GetFileInfo} from "./util";
+import * as mask from "./qmcMask"
+
 const musicMetadata = require("music-metadata-browser");
-const util = require("./util");
-import * as mask from "./qmcmask"
-
-const OriginalExtMap = {
-    "qmc0": "mp3",
-    "qmc3": "mp3",
-    "qmcogg": "ogg",
-    "qmcflac": "flac",
-    "bkcmp3": "mp3",
-    "bkcflac": "flac",
-    "tkm": "m4a"
+
+const HandlerMap = {
+    "mgg": {handler: mask.QmcMaskDetectMgg, ext: "ogg", detect: true},
+    "mflac": {handler: mask.QmcMaskDetectMflac, ext: "flac", detect: true},
+    "qmc0": {handler: mask.QmcMaskGetDefault, ext: "mp3", detect: false},
+    "qmc3": {handler: mask.QmcMaskGetDefault, ext: "mp3", detect: false},
+    "qmcogg": {handler: mask.QmcMaskGetDefault, ext: "ogg", detect: false},
+    "qmcflac": {handler: mask.QmcMaskGetDefault, ext: "flac", detect: false},
+    "bkcmp3": {handler: mask.QmcMaskGetDefault, ext: "mp3", detect: false},
+    "bkcflac": {handler: mask.QmcMaskGetDefault, ext: "flac", detect: false},
+    "tkm": {handler: mask.QmcMaskGetDefault, ext: "m4a", detect: false}
 };
 
 //todo: use header to detect media type
 export async function Decrypt(file, raw_filename, raw_ext) {
-    // 获取扩展名
-    if (!(raw_ext in OriginalExtMap)) {
-        return {status: false, message: "File type is incorrect!"}
+    if (!(raw_ext in HandlerMap)) return {status: false, message: "File type is incorrect!"};
+    const handler = HandlerMap[raw_ext];
+
+    const fileData = new Uint8Array(await GetArrayBuffer(file));
+    let audioData, seed, keyData;
+    if (handler.detect) {
+        audioData = fileData.slice(0, -0x170);
+        seed = handler.handler(audioData);
+        keyData = fileData.slice(-0x170);
+        if (seed === undefined) seed = await queryKeyInfo(keyData, raw_filename, raw_ext);
+        if (seed === undefined) return {status: false, message: "此格式仅提供实验性支持！"};
+    } else {
+        audioData = fileData;
+        seed = handler.handler(audioData);
     }
-    const new_ext = OriginalExtMap[raw_ext];
-    const mime = util.AudioMimeType[new_ext];
-    // 读取文件
-    const fileBuffer = await util.GetArrayBuffer(file);
-    const audioData = new Uint8Array(fileBuffer);
-    // 转换数据
-    const seed = mask.QmcMaskGetDefault();
     const dec = seed.Decrypt(audioData);
-    // 导出
+
+    const mime = AudioMimeType[handler.ext];
     const musicData = new Blob([dec], {type: mime});
-    // 读取Meta
-    const tag = await musicMetadata.parseBlob(musicData);
-    const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
 
-    // 返回
+    const tag = await musicMetadata.parseBlob(musicData);
+    const info = GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
+    if (handler.detect) reportKeyUsage(keyData, seed.Matrix128,
+        info.artist, info.title, tag.common.album, raw_filename, raw_ext);
     return {
         status: true,
         title: info.title,
         artist: info.artist,
-        ext: new_ext,
+        ext: handler.ext,
         album: tag.common.album,
-        picture: util.GetCoverURL(tag),
+        picture: GetCoverURL(tag),
         file: URL.createObjectURL(musicData),
         mime: mime
     }
 }
+
+function reportKeyUsage(keyData, maskData, artist, title, album, filename, format) {
+    fetch("https://stats.ixarea.com/collect/qmcmask/usage", {
+        method: "POST",
+        headers: {"Content-Type": "application/json"},
+        body: JSON.stringify({
+            Mask: Array.from(maskData), Key: Array.from(keyData),
+            Artist: artist, Title: title, Album: album, Filename: filename, Format: format
+        }),
+    }).then().catch()
+}
+
+async function queryKeyInfo(keyData, filename, format) {
+    try {
+        const resp = await fetch("https://stats.ixarea.com/collect/qmcmask/query", {
+            method: "POST",
+            headers: {"Content-Type": "application/json"},
+            body: JSON.stringify({Format: format, Key: Array.from(keyData), Filename: filename}),
+        });
+        let data = await resp.json();
+        return mask.QmcMaskCreate58(data.Matrix58, data.Super58A, data.Super58B);
+    } catch (e) {
+    }
+}