Use Universal Mask for Qmc,Mgg,Mflac
Add Local Experimental Support For Mgg
This commit is contained in:
MengYX
parent
2fc9368a92
commit
47cea6eae9
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@ -1,36 +1,34 @@
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const musicMetadata = require("music-metadata-browser");
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const util = require("./util");
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export {Decrypt}
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const FLAC_HEADER = [0x66, 0x4C, 0x61, 0x43, 0x00];
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import {GetArrayBuffer, GetCoverURL, GetFileInfo} from "./util"
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async function Decrypt(file, raw_filename, raw_ext) {
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import * as mask from "./qmcmask"
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export async function Decrypt(file, raw_filename, raw_ext) {
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// 获取扩展名
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if (raw_ext !== "mflac") return {
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status: false,
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message: "File type is incorrect!",
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};
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// 读取文件
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const fileBuffer = await util.GetArrayBuffer(file);
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const fileBuffer = await GetArrayBuffer(file);
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const audioData = new Uint8Array(fileBuffer.slice(0, -0x170));
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const audioDataLen = audioData.length;
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//const audioDataLen = audioData.length;
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// 转换数据
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const seed = new Mask();
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if (!seed.DetectMask(audioData)) return {
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const seed = mask.QmcMaskDetectMflac(audioData);
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if (seed === undefined) return {
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status: false,
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message: "此音乐无法解锁，目前mflac格式不提供完整支持",
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};
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for (let cur = 0; cur < audioDataLen; ++cur) {
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audioData[cur] ^= seed.NextMask();
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}
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const dec = seed.Decrypt(audioData);
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// 导出
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const musicData = new Blob([audioData], {type: "audio/flac"});
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const musicData = new Blob([dec], {type: "audio/flac"});
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// 读取Meta
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let tag = await musicMetadata.parseBlob(musicData);
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const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
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reportKeyInfo(new Uint8Array(fileBuffer.slice(-0x170)), seed.mask128,
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info.artist, info.title, tag.common.album, raw_filename);
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const info = GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
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//reportKeyInfo(new Uint8Array(fileBuffer.slice(-0x170)), seed.mask128,
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// info.artist, info.title, tag.common.album, raw_filename);
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// 返回
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return {
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@ -39,84 +37,12 @@ async function Decrypt(file, raw_filename, raw_ext) {
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artist: info.artist,
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ext: 'flac',
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album: tag.common.album,
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picture: util.GetCoverURL(tag),
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picture: GetCoverURL(tag),
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file: URL.createObjectURL(musicData),
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mime: "audio/flac"
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}
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}
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class Mask {
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constructor() {
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this.index = -1;
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this.mask_index = -1;
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this.mask128 = new Uint8Array(128);
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this.mask58_martix = new Uint8Array(56);
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this.mask58_super1 = 0x00;
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this.mask58_super2 = 0x00;
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}
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DetectMask(data) {
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let search_len = Math.min(0x8000, data.length), mask;
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for (let block_idx = 0; block_idx < search_len; block_idx += 128) {
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mask = data.slice(block_idx, block_idx + 128);
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const mask58 = this.Convert128to58(mask);
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if (mask58 === undefined) continue;
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if (!FLAC_HEADER.every((val, idx) => {
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return val === mask[idx] ^ data[idx];
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})) continue;
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this.mask128 = mask;
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this.mask58_martix = mask58.matrix;
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this.mask58_super1 = mask58.super_8_1;
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this.mask58_super2 = mask58.super_8_2;
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return true;
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}
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return false;
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}
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Convert128to58(mask128) {
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const super_8_1 = mask128[0], super_8_2 = mask128[8];
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let matrix = [];
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for (let row_idx = 0; row_idx < 8; row_idx++) {
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const len_start = 16 * row_idx;
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const len_right_start = 120 - len_start;//16*(8-row_idx-1)+8
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if (mask128[len_start] !== super_8_1 || mask128[len_start + 8] !== super_8_2) {
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return
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}
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const row_left = mask128.slice(len_start + 1, len_start + 8);
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const row_right = mask128.slice(len_right_start + 1, len_right_start + 8).reverse();
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if (row_left.every((val, idx) => {
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return row_right[idx] === val
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})) {
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matrix.push(row_left);
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} else {
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return
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}
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}
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return {matrix, super_8_1, super_8_2}
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}
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NextMask() {
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this.index++;
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this.mask_index++;
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if (this.index === 0x8000 || (this.index > 0x8000 && (this.index + 1) % 0x8000 === 0)) {
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this.index++;
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this.mask_index++;
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}
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if (this.mask_index >= 128) {
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this.mask_index -= 128;
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}
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return this.mask128[this.mask_index]
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}
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}
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function reportKeyInfo(keyData, maskData, artist, title, album, filename) {
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fetch("https://stats.ixarea.com/collect/mflac/mask", {
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method: "POST",
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@ -1,9 +1,10 @@
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const musicMetadata = require("music-metadata-browser");
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const util = require("./util");
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export {Decrypt}
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const FLAC_HEADER = [0x4F, 0x67, 0x67, 0x53, 0x00];
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async function Decrypt(file, raw_filename, raw_ext) {
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import * as mask from "./qmcmask"
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//todo: combine qmc mflac mgg
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export async function Decrypt(file, raw_filename, raw_ext) {
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// 获取扩展名
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if (raw_ext !== "mgg") return {
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status: false,
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@ -15,24 +16,21 @@ async function Decrypt(file, raw_filename, raw_ext) {
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const audioDataLen = audioData.length;
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const keyData = new Uint8Array(fileBuffer.slice(-0x170));
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const headData = new Uint8Array(fileBuffer.slice(0, 170));
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let seed;
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try {
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let resp = await queryKeyInfo(keyData, headData, raw_filename);
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let data = await resp.json();
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seed = new Mask(data.Mask);
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} catch (e) {
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let seed = mask.QmcMaskDetectMgg(headData);
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if (seed === undefined) {
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return {
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status: false,
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message: "此音乐无法解锁，目前mgg格式仅提供试验性支持",
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};
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/*try {
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let resp = await queryKeyInfo(keyData, headData, raw_filename);
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let data = await resp.json();
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seed = mask.QmcMaskCreate128(data.Mask);
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} catch (e) {}*/
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}
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for (let cur = 0; cur < audioDataLen; ++cur) {
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audioData[cur] ^= seed.NextMask();
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}
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const dec = seed.Decrypt(audioData);
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// 导出
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const musicData = new Blob([audioData], {type: "audio/ogg"});
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const musicData = new Blob([dec], {type: "audio/ogg"});
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// 读取Meta
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let tag = await musicMetadata.parseBlob(musicData);
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@ -52,31 +50,9 @@ async function Decrypt(file, raw_filename, raw_ext) {
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}
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class Mask {
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constructor(mask) {
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this.index = -1;
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this.mask_index = -1;
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this.mask128 = mask;
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}
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NextMask() {
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this.index++;
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this.mask_index++;
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if (this.index === 0x8000 || (this.index > 0x8000 && (this.index + 1) % 0x8000 === 0)) {
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this.index++;
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this.mask_index++;
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}
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if (this.mask_index >= 128) {
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this.mask_index -= 128;
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}
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return this.mask128[this.mask_index]
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}
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}
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function queryKeyInfo(keyData, headData, filename) {
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return fetch("https://stats.ixarea.com/collect/mgg/query", {
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return fetch("http://127.0.0.1:6580/mgg/query", {
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method: "POST",
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headers: {"Content-Type": "application/json"},
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body: JSON.stringify({Key: Array.from(keyData), Head: Array.from(headData), Filename: filename}),
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@ -1,15 +1,6 @@
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const musicMetadata = require("music-metadata-browser");
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const util = require("./util");
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export {Decrypt}
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const SEED_MAP = [
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[0x4a, 0xd6, 0xca, 0x90, 0x67, 0xf7, 0x52],
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[0x5e, 0x95, 0x23, 0x9f, 0x13, 0x11, 0x7e],
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[0x47, 0x74, 0x3d, 0x90, 0xaa, 0x3f, 0x51],
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[0xc6, 0x09, 0xd5, 0x9f, 0xfa, 0x66, 0xf9],
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[0xf3, 0xd6, 0xa1, 0x90, 0xa0, 0xf7, 0xf0],
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[0x1d, 0x95, 0xde, 0x9f, 0x84, 0x11, 0xf4],
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[0x0e, 0x74, 0xbb, 0x90, 0xbc, 0x3f, 0x92],
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[0x00, 0x09, 0x5b, 0x9f, 0x62, 0x66, 0xa1]];
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import * as mask from "./qmcmask"
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const OriginalExtMap = {
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"qmc0": "mp3",
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@ -21,7 +12,8 @@ const OriginalExtMap = {
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"tkm": "m4a"
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};
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async function Decrypt(file, raw_filename, raw_ext) {
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//todo: use header to detect media type
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export async function Decrypt(file, raw_filename, raw_ext) {
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// 获取扩展名
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if (!(raw_ext in OriginalExtMap)) {
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return {status: false, message: "File type is incorrect!"}
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@ -32,12 +24,10 @@ async function Decrypt(file, raw_filename, raw_ext) {
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const fileBuffer = await util.GetArrayBuffer(file);
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const audioData = new Uint8Array(fileBuffer);
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// 转换数据
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const seed = new Mask();
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for (let cur = 0; cur < audioData.length; ++cur) {
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audioData[cur] ^= seed.NextMask();
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}
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const seed = mask.QmcMaskGetDefault();
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const dec = seed.Decrypt(audioData);
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// 导出
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const musicData = new Blob([audioData], {type: mime});
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const musicData = new Blob([dec], {type: mime});
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// 读取Meta
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const tag = await musicMetadata.parseBlob(musicData);
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const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename);
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@ -54,34 +44,3 @@ async function Decrypt(file, raw_filename, raw_ext) {
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mime: mime
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}
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}
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class Mask {
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constructor() {
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this.x = -1;
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this.y = 8;
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this.dx = 1;
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this.index = -1;
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}
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NextMask() {
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let ret;
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this.index++;
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if (this.x < 0) {
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this.dx = 1;
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this.y = (8 - this.y) % 8;
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ret = 0xc3
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} else if (this.x > 6) {
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this.dx = -1;
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this.y = 7 - this.y;
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ret = 0xd8
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} else {
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ret = SEED_MAP[this.y][this.x]
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}
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this.x += this.dx;
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if (this.index === 0x8000 || (this.index > 0x8000 && (this.index + 1) % 0x8000 === 0)) {
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return this.NextMask()
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}
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return ret
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}
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}
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@ -0,0 +1,200 @@
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import {FLAC_HEADER, IsBytesEqual} from "./util"
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const QMOggConstHeader = [
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0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x1E, 0x01, 0x76, 0x6F, 0x72,
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0x62, 0x69, 0x73, 0x00, 0x00, 0x00, 0x00, 0x02, 0x44, 0xAC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0xEE, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xB8, 0x01, 0x4F, 0x67, 0x67, 0x53, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x03, 0x76, 0x6F, 0x72, 0x62, 0x69, 0x73, 0x2C, 0x00, 0x00, 0x00,
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0x58, 0x69, 0x70, 0x68, 0x2E, 0x4F, 0x72, 0x67, 0x20, 0x6C, 0x69, 0x62, 0x56, 0x6F, 0x72, 0x62,
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0x69, 0x73, 0x20, 0x49, 0x20, 0x32, 0x30, 0x31, 0x35, 0x30, 0x31, 0x30, 0x35, 0x20, 0x28, 0xE2,
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0x9B, 0x84, 0xE2, 0x9B, 0x84, 0xE2, 0x9B, 0x84, 0xE2, 0x9B, 0x84, 0x29, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x54, 0x49, 0x54, 0x4C, 0x45, 0x3D];
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const QMOggConstHeaderConfidence = [
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 0,
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0, 0, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 6, 3, 3, 3, 3, 6, 6, 6, 6,
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3, 3, 3, 3, 6, 6, 6, 6, 6, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 9, 9, 9, 9,
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0, 0, 0, 0, 6, 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0, 1, 9, 9,
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0, 1, 9, 9, 9, 9, 9, 9, 9, 9];
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const QMCDefaultMaskMatrix = [
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0x4A, 0xD6, 0xCA, 0x90, 0x67, 0xF7, 0x52, 0x5E,
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0x95, 0x23, 0x9F, 0x13, 0x11, 0x7E, 0x47, 0x74,
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0x3D, 0x90, 0xAA, 0x3F, 0x51, 0xC6, 0x09, 0xD5,
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0x9F, 0xFA, 0x66, 0xF9, 0xF3, 0xD6, 0xA1, 0x90,
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0xA0, 0xF7, 0xF0, 0x1D, 0x95, 0xDE, 0x9F, 0x84,
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0x11, 0xF4, 0x0E, 0x74, 0xBB, 0x90, 0xBC, 0x3F,
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0x92, 0x00, 0x09, 0x5B, 0x9F, 0x62, 0x66, 0xA1];
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const QMCDefaultMaskSuperA = 0xC3;
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const QMCDefaultMaskSuperB = 0xD8;
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class QmcMask {
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constructor(matrix, superA, superB) {
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if (superA === undefined || superB === undefined) {
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this.Matrix128 = matrix;
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this.generateMask58from128()
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} else {
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this.Matrix58 = matrix;
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this.Super58A = superA;
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this.Super58B = superB;
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this.generateMask128from58();
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}
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}
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generateMask128from58() {
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if (this.Matrix58.length !== 56) throw "incorrect mask58 matrix length";
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let matrix128 = [];
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for (let rowIdx = 0; rowIdx < 8; rowIdx += 1) {
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matrix128 = matrix128.concat(
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[this.Super58A],
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this.Matrix58.slice(7 * rowIdx, 7 * rowIdx + 7),
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[this.Super58B],
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this.Matrix58.slice(56 - 7 - 7 * rowIdx, 56 - 7 * rowIdx).reverse()
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);
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}
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this.Matrix128 = matrix128;
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}
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generateMask58from128() {
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if (this.Matrix128.length !== 128) throw "incorrect mask128 length";
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const superA = this.Matrix128[0], superB = this.Matrix128[8];
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let matrix58 = [];
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for (let rowIdx = 0; rowIdx < 8; rowIdx += 1) {
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let lenStart = 16 * rowIdx;
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let lenRightStart = 120 - lenStart;
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if (this.Matrix128[lenStart] !== superA || this.Matrix128[lenStart + 8] !== superB) {
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throw "decode mask-128 to mask-58 failed"
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}
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let rowLeft = this.Matrix128.slice(lenStart + 1, lenStart + 8);
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let rowRight = this.Matrix128.slice(lenRightStart + 1, lenRightStart + 8).reverse();
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if (IsBytesEqual(rowLeft, rowRight)) {
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matrix58 = matrix58.concat(rowLeft);
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} else {
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throw "decode mask-128 to mask-58 failed"
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}
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}
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this.Matrix58 = matrix58;
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this.Super58A = superA;
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this.Super58B = superB;
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}
|
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|
||||
Decrypt(data) {
|
||||
let dst = data.slice(0);
|
||||
let maskIdx = -1;
|
||||
for (let cur = 0; cur < data.length; cur++) {
|
||||
maskIdx++;
|
||||
if (cur === 0x8001 || (cur > 0x8001 && cur % 0x8000 === 0)) maskIdx++;
|
||||
if (maskIdx >= 128) maskIdx -= 128;
|
||||
dst[cur] ^= this.Matrix128[maskIdx];
|
||||
}
|
||||
return dst;
|
||||
}
|
||||
}
|
||||
|
||||
export function QmcMaskGetDefault() {
|
||||
return new QmcMask(QMCDefaultMaskMatrix, QMCDefaultMaskSuperA, QMCDefaultMaskSuperB)
|
||||
}
|
||||
|
||||
export function QmcMaskDetectMflac(data) {
|
||||
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 (!mask.Decrypt(data.slice(0, FLAC_HEADER.length))
|
||||
.every((val, idx) => {
|
||||
return val === FLAC_HEADER[idx];
|
||||
})) break;
|
||||
} catch (e) {
|
||||
}
|
||||
}
|
||||
return mask
|
||||
}
|
||||
|
||||
export function QmcMaskDetectMgg(input) {
|
||||
if (input.length < QMOggConstHeader.length) return;
|
||||
let matrixConfidence = {};
|
||||
for (let i = 0; i < 58; i++) matrixConfidence[i] = {};
|
||||
|
||||
for (let idx128 = 0; idx128 < QMOggConstHeader.length; idx128++) {
|
||||
if (QMOggConstHeaderConfidence[idx128] === 0) continue;
|
||||
let idx58 = GetMask58Index(idx128);
|
||||
let mask = input[idx128] ^ QMOggConstHeader[idx128];
|
||||
let confidence = QMOggConstHeaderConfidence[idx128];
|
||||
if (mask in matrixConfidence[idx58]) {
|
||||
matrixConfidence[idx58][mask] += confidence
|
||||
} else {
|
||||
matrixConfidence[idx58][mask] = confidence
|
||||
}
|
||||
}
|
||||
let matrix = [], superA, superB;
|
||||
try {
|
||||
for (let i = 0; i < 56; i++) matrix[i] = getMaskConfidenceResult(matrixConfidence[i]);
|
||||
superA = getMaskConfidenceResult(matrixConfidence[56]);
|
||||
superB = getMaskConfidenceResult(matrixConfidence[57]);
|
||||
} catch (e) {
|
||||
return;
|
||||
}
|
||||
return new QmcMask(matrix, superA, superB);
|
||||
}
|
||||
|
||||
export function QmcMaskCreate128(mask128) {
|
||||
return new QmcMask(mask128)
|
||||
}
|
||||
|
||||
export function QmcMaskCreate58(matrix, superA, superB) {
|
||||
return new QmcMask(matrix, superA, superB)
|
||||
}
|
||||
|
||||
/**
|
||||
* @param confidence {{}}
|
||||
* @returns {number}
|
||||
*/
|
||||
function getMaskConfidenceResult(confidence) {
|
||||
if (confidence.length === 0) throw "can not match at least one key";
|
||||
let result = 0, conf = 0;
|
||||
for (let idx in confidence) {
|
||||
if (confidence[idx] > conf) {
|
||||
result = idx;
|
||||
conf = confidence[idx];
|
||||
}
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
/**
|
||||
* @return {number}
|
||||
*/
|
||||
function GetMask58Index(idx128) {
|
||||
if (idx128 > 127) idx128 = idx128 % 128;
|
||||
let col = idx128 % 16;
|
||||
let row = (idx128 - col) / 16;
|
||||
switch (col) {
|
||||
case 0://Super 1
|
||||
row = 8;
|
||||
col = 0;
|
||||
break;
|
||||
case 8://Super 2
|
||||
row = 8;
|
||||
col = 1;
|
||||
break;
|
||||
default:
|
||||
if (col > 7) {
|
||||
row = 7 - row;
|
||||
col = 15 - col;
|
||||
} else {
|
||||
col -= 1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
return row * 7 + col
|
||||
}
|
||||
|
|
@ -1,7 +1,13 @@
|
|||
export {GetArrayBuffer, GetFileInfo, GetCoverURL, AudioMimeType}
|
||||
export const AudioMimeType = {
|
||||
mp3: "audio/mpeg",
|
||||
flac: "audio/flac",
|
||||
m4a: "audio/mp4",
|
||||
ogg: "audio/ogg"
|
||||
};
|
||||
export const FLAC_HEADER = [0x66, 0x4C, 0x61, 0x43, 0x00];
|
||||
|
||||
// Also a new draft API: blob.arrayBuffer()
|
||||
async function GetArrayBuffer(blobObject) {
|
||||
export async function GetArrayBuffer(blobObject) {
|
||||
return await new Promise(resolve => {
|
||||
const reader = new FileReader();
|
||||
reader.onload = (e) => {
|
||||
|
|
@ -11,14 +17,7 @@ async function GetArrayBuffer(blobObject) {
|
|||
});
|
||||
}
|
||||
|
||||
const AudioMimeType = {
|
||||
mp3: "audio/mpeg",
|
||||
flac: "audio/flac",
|
||||
m4a: "audio/mp4",
|
||||
ogg: "audio/ogg"
|
||||
};
|
||||
|
||||
function GetFileInfo(artist, title, filenameNoExt) {
|
||||
export function GetFileInfo(artist, title, filenameNoExt) {
|
||||
let newArtist = "", newTitle = "";
|
||||
let filenameArray = filenameNoExt.split("-");
|
||||
if (filenameArray.length > 1) {
|
||||
|
|
@ -28,19 +27,15 @@ function GetFileInfo(artist, title, filenameNoExt) {
|
|||
newTitle = filenameArray[0].trim();
|
||||
}
|
||||
|
||||
if (typeof artist == "string" && artist !== "") {
|
||||
newArtist = artist;
|
||||
}
|
||||
if (typeof title == "string" && title !== "") {
|
||||
newTitle = title;
|
||||
}
|
||||
if (typeof artist == "string" && artist !== "") newArtist = artist;
|
||||
if (typeof title == "string" && title !== "") newTitle = title;
|
||||
return {artist: newArtist, title: newTitle};
|
||||
}
|
||||
|
||||
/**
|
||||
* @return {string}
|
||||
*/
|
||||
function GetCoverURL(metadata) {
|
||||
export function GetCoverURL(metadata) {
|
||||
let pic_url = "";
|
||||
if (metadata.common.picture !== undefined && metadata.common.picture.length > 0) {
|
||||
let pic = new Blob([metadata.common.picture[0].data], {type: metadata.common.picture[0].format});
|
||||
|
|
@ -48,3 +43,9 @@ function GetCoverURL(metadata) {
|
|||
}
|
||||
return pic_url;
|
||||
}
|
||||
|
||||
export function IsBytesEqual(first, second) {
|
||||
return first.every((val, idx) => {
|
||||
return val === second[idx];
|
||||
})
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue