56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
const musicMetadata = require("music-metadata-browser");
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import {GetArrayBuffer, GetCoverURL, GetFileInfo} from "./util"
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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 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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// 转换数据
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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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const dec = seed.Decrypt(audioData);
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// 导出
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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 = 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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status: true,
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title: info.title,
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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: 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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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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headers: {"Content-Type": "application/json"},
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body: JSON.stringify({
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Mask: Array.from(maskData), Key: Array.from(keyData),
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Artist: artist, Title: title, Album: album, Filename: filename
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}),
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}).then().catch()
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}
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