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refactor(typescript): .xm & .kgm

This commit is contained in:
Emmm Monster 2021-05-24 01:30:38 +08:00
parent f2aa84bfac
commit a14853412e
6 changed files with 41 additions and 154 deletions
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126
src/decrypt/kgm.js
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@ -1,126 +0,0 @@
import {
AudioMimeType,
BytesHasPrefix,
GetArrayBuffer,
GetCoverFromFile,
GetMetaFromFile,
SniffAudioExt
} from "@/decrypt/utils.ts";
import {parseBlob as metaParseBlob} from "music-metadata-browser";
const VprHeader = [
0x05, 0x28, 0xBC, 0x96, 0xE9, 0xE4, 0x5A, 0x43,
0x91, 0xAA, 0xBD, 0xD0, 0x7A, 0xF5, 0x36, 0x31]
const KgmHeader = [
0x7C, 0xD5, 0x32, 0xEB, 0x86, 0x02, 0x7F, 0x4B,
0xA8, 0xAF, 0xA6, 0x8E, 0x0F, 0xFF, 0x99, 0x14]
const VprMaskDiff = [0x25, 0xDF, 0xE8, 0xA6, 0x75, 0x1E, 0x75, 0x0E,
0x2F, 0x80, 0xF3, 0x2D, 0xB8, 0xB6, 0xE3, 0x11,
0x00]
export async function Decrypt(file, raw_filename, raw_ext) {
try {
if (window.location.protocol === "file:") {
return {
status: false,
message: "请使用<a target='_blank' href='https://github.com/ix64/unlock-music/wiki/其他音乐格式工具'>CLI版本</a>进行解锁"
}
}
} catch {
}
const oriData = new Uint8Array(await GetArrayBuffer(file));
if (raw_ext === "vpr") {
if (!BytesHasPrefix(oriData, VprHeader))
return {status: false, message: "Not a valid vpr file!"}
} else {
if (!BytesHasPrefix(oriData, KgmHeader))
return {status: false, message: "Not a valid kgm/kgma file!"}
}
let bHeaderLen = new DataView(oriData.slice(0x10, 0x14).buffer)
let headerLen = bHeaderLen.getUint32(0, true)
let audioData = oriData.slice(headerLen)
let dataLen = audioData.length
if (audioData.byteLength > 1 << 26) {
return {
status: false,
message: "文件过大，请使用<a target='_blank' href='https://github.com/ix64/unlock-music/wiki/其他音乐格式工具'>CLI版本</a>进行解锁"
}
}
let key1 = new Uint8Array(17)
key1.set(oriData.slice(0x1c, 0x2c), 0)
if (MaskV2 == null) {
if (!await LoadMaskV2()) {
return {status: false, message: "加载Kgm/Vpr Mask数据失败"}
}
}
for (let i = 0; i < dataLen; i++) {
let med8 = key1[i % 17] ^ audioData[i]
med8 ^= (med8 & 0xf) << 4
let msk8 = GetMask(i)
msk8 ^= (msk8 & 0xf) << 4
audioData[i] = med8 ^ msk8
}
if (raw_ext === "vpr") {
for (let i = 0; i < dataLen; i++) audioData[i] ^= VprMaskDiff[i % 17]
}
const ext = SniffAudioExt(audioData);
const mime = AudioMimeType[ext];
let musicBlob = new Blob([audioData], {type: mime});
const musicMeta = await metaParseBlob(musicBlob);
const {title, artist} = GetMetaFromFile(raw_filename, musicMeta.common.title, musicMeta.common.artist)
return {
status: true,
album: musicMeta.common.album,
picture: GetCoverFromFile(musicMeta),
file: URL.createObjectURL(musicBlob),
ext,
mime,
title,
artist
}
}
function GetMask(pos) {
return MaskV2PreDef[pos % 272] ^ MaskV2[pos >> 4]
}
let MaskV2 = null;
async function LoadMaskV2() {
try {
let resp = await fetch("./static/kgm.mask", {
method: "GET"
})
MaskV2 = new Uint8Array(await resp.arrayBuffer());
return true
} catch (e) {
console.error(e)
return false
}
}
const MaskV2PreDef = [
0xB8, 0xD5, 0x3D, 0xB2, 0xE9, 0xAF, 0x78, 0x8C, 0x83, 0x33, 0x71, 0x51, 0x76, 0xA0, 0xCD, 0x37,
0x2F, 0x3E, 0x35, 0x8D, 0xA9, 0xBE, 0x98, 0xB7, 0xE7, 0x8C, 0x22, 0xCE, 0x5A, 0x61, 0xDF, 0x68,
0x69, 0x89, 0xFE, 0xA5, 0xB6, 0xDE, 0xA9, 0x77, 0xFC, 0xC8, 0xBD, 0xBD, 0xE5, 0x6D, 0x3E, 0x5A,
0x36, 0xEF, 0x69, 0x4E, 0xBE, 0xE1, 0xE9, 0x66, 0x1C, 0xF3, 0xD9, 0x02, 0xB6, 0xF2, 0x12, 0x9B,
0x44, 0xD0, 0x6F, 0xB9, 0x35, 0x89, 0xB6, 0x46, 0x6D, 0x73, 0x82, 0x06, 0x69, 0xC1, 0xED, 0xD7,
0x85, 0xC2, 0x30, 0xDF, 0xA2, 0x62, 0xBE, 0x79, 0x2D, 0x62, 0x62, 0x3D, 0x0D, 0x7E, 0xBE, 0x48,
0x89, 0x23, 0x02, 0xA0, 0xE4, 0xD5, 0x75, 0x51, 0x32, 0x02, 0x53, 0xFD, 0x16, 0x3A, 0x21, 0x3B,
0x16, 0x0F, 0xC3, 0xB2, 0xBB, 0xB3, 0xE2, 0xBA, 0x3A, 0x3D, 0x13, 0xEC, 0xF6, 0x01, 0x45, 0x84,
0xA5, 0x70, 0x0F, 0x93, 0x49, 0x0C, 0x64, 0xCD, 0x31, 0xD5, 0xCC, 0x4C, 0x07, 0x01, 0x9E, 0x00,
0x1A, 0x23, 0x90, 0xBF, 0x88, 0x1E, 0x3B, 0xAB, 0xA6, 0x3E, 0xC4, 0x73, 0x47, 0x10, 0x7E, 0x3B,
0x5E, 0xBC, 0xE3, 0x00, 0x84, 0xFF, 0x09, 0xD4, 0xE0, 0x89, 0x0F, 0x5B, 0x58, 0x70, 0x4F, 0xFB,
0x65, 0xD8, 0x5C, 0x53, 0x1B, 0xD3, 0xC8, 0xC6, 0xBF, 0xEF, 0x98, 0xB0, 0x50, 0x4F, 0x0F, 0xEA,
0xE5, 0x83, 0x58, 0x8C, 0x28, 0x2C, 0x84, 0x67, 0xCD, 0xD0, 0x9E, 0x47, 0xDB, 0x27, 0x50, 0xCA,
0xF4, 0x63, 0x63, 0xE8, 0x97, 0x7F, 0x1B, 0x4B, 0x0C, 0xC2, 0xC1, 0x21, 0x4C, 0xCC, 0x58, 0xF5,
0x94, 0x52, 0xA3, 0xF3, 0xD3, 0xE0, 0x68, 0xF4, 0x00, 0x23, 0xF3, 0x5E, 0x0A, 0x7B, 0x93, 0xDD,
0xAB, 0x12, 0xB2, 0x13, 0xE8, 0x84, 0xD7, 0xA7, 0x9F, 0x0F, 0x32, 0x4C, 0x55, 0x1D, 0x04, 0x36,
0x52, 0xDC, 0x03, 0xF3, 0xF9, 0x4E, 0x42, 0xE9, 0x3D, 0x61, 0xEF, 0x7C, 0xB6, 0xB3, 0x93, 0x50,
]

14
src/decrypt/ncm.js
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@ -1,4 +1,11 @@
import {AudioMimeType, BytesHasPrefix, GetArrayBuffer, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils.ts";
import {
AudioMimeType,
BytesHasPrefix,
GetArrayBuffer,
GetImageFromURL,
GetMetaFromFile,
SniffAudioExt
} from "@/decrypt/utils.ts";
import {parseBlob as metaParseBlob} from "music-metadata-browser";
const CryptoJS = require("crypto-js");
@ -10,7 +17,6 @@ const MagicHeader = [0x43, 0x54, 0x45, 0x4E, 0x46, 0x44, 0x41, 0x4D];
import jimp from 'jimp';
import {
GetWebImage,
WriteMp3Meta
} from "./util"
@ -41,8 +47,8 @@ export async function Decrypt(file, raw_filename, _) {
if (musicMeta.format === undefined) musicMeta.format = SniffAudioExt(audioData);
const imageInfo = await GetWebImage(musicMeta.albumPic);
while (!!imageInfo.buffer && imageInfo.buffer.byteLength >= 16 * 1024 * 1024) {
const imageInfo = await GetImageFromURL(musicMeta.albumPic);
while (imageInfo && imageInfo.buffer.byteLength >= 1 << 24) {
let img = await jimp.read(imageInfo.buffer)
await img.resize(Math.round(img.getHeight() / 2), jimp.AUTO)
imageInfo.buffer = await img.getBufferAsync("image/jpeg")

14
src/decrypt/qmc.js
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@ -1,11 +1,17 @@
import {
GetWebImage,
IXAREA_API_ENDPOINT,
WriteMp3Meta
} from "./util";
import {QmcMaskCreate58, QmcMaskDetectMflac, QmcMaskDetectMgg, QmcMaskGetDefault} from "./qmcMask";
import {fromByteArray as Base64Encode, toByteArray as Base64Decode} from 'base64-js'
import {AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils.ts";
import {
AudioMimeType,
GetArrayBuffer,
GetCoverFromFile,
GetImageFromURL,
GetMetaFromFile,
SniffAudioExt
} from "@/decrypt/utils.ts";
import {parseBlob as metaParseBlob} from "music-metadata-browser";
const MetaFlac = require('metaflac-js');
@ -75,8 +81,8 @@ export async function Decrypt(file, raw_filename, raw_ext) {
if (!imgUrl) {
imgUrl = await queryAlbumCoverImage(info.artist, info.title, musicMeta.common.album);
if (imgUrl !== "") {
const imageInfo = await GetWebImage(imgUrl);
if (imageInfo.url !== "") {
const imageInfo = await GetImageFromURL(imgUrl);
if (imageInfo) {
imgUrl = imageInfo.url
try {
if (ext === "mp3") {

15
src/decrypt/util.js
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@ -4,21 +4,6 @@ const ID3Writer = require("browser-id3-writer");
export const IXAREA_API_ENDPOINT = "https://stats.ixarea.com/apis"
export async function GetWebImage(pic_url) {
try {
let resp = await fetch(pic_url);
let mime = resp.headers.get("Content-Type");
if (mime.startsWith("image/")) {
let buf = await resp.arrayBuffer();
let objBlob = new Blob([buf], {type: mime});
let objUrl = URL.createObjectURL(objBlob);
return {"buffer": buf, "src": pic_url, "url": objUrl, "type": mime};
}
} catch (e) {
}
return {"buffer": null, "src": pic_url, "url": "", "type": ""}
}
export async function WriteMp3Meta(audioData, artistList, title, album, pictureData = null, pictureDesc = "Cover", originalMeta = null) {
const writer = new ID3Writer(audioData);
if (originalMeta !== null) {

15
src/decrypt/utils.ts
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@ -89,3 +89,18 @@ export function GetMetaFromFile(filename: string, exist_title?: string, exist_ar
}
return meta
}
export async function GetImageFromURL(src: string):
Promise<{ mime: string; buffer: ArrayBuffer; url: string } | undefined> {
try {
const resp = await fetch(src);
const mime = resp.headers.get("Content-Type");
if (mime?.startsWith("image/")) {
const buffer = await resp.arrayBuffer();
const url = URL.createObjectURL(new Blob([buffer], {type: mime}))
return {buffer, url, mime}
}
} catch (e) {
console.warn(e)
}
}

11
src/decrypt/xm.js → src/decrypt/xm.ts
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@ -1,22 +1,23 @@
import {Decrypt as RawDecrypt} from "./raw";
import {Decrypt as RawDecrypt} from "@/decrypt/raw";
import {DecryptResult} from "@/decrypt/entity";
import {AudioMimeType, BytesHasPrefix, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile} from "@/decrypt/utils.ts";
import {parseBlob as metaParseBlob} from "music-metadata-browser";
const MagicHeader = [0x69, 0x66, 0x6D, 0x74]
const MagicHeader2 = [0xfe, 0xfe, 0xfe, 0xfe]
const FileTypeMap = {
const FileTypeMap: { [key: string]: string } = {
" WAV": ".wav",
"FLAC": ".flac",
" MP3": ".mp3",
" A4M": ".m4a",
}
export async function Decrypt(file, raw_filename, raw_ext) {
export async function Decrypt(file: File, raw_filename: string, raw_ext: string): Promise<DecryptResult> {
const oriData = new Uint8Array(await GetArrayBuffer(file));
if (!BytesHasPrefix(oriData, MagicHeader) || !BytesHasPrefix(oriData.slice(8, 12), MagicHeader2)) {
if (raw_ext === "xm") {
return {status: false, message: "此xm文件已损坏"}
throw Error("此xm文件已损坏")
} else {
return await RawDecrypt(file, raw_filename, raw_ext, true)
}
@ -24,7 +25,7 @@ export async function Decrypt(file, raw_filename, raw_ext) {
let typeText = (new TextDecoder()).decode(oriData.slice(4, 8))
if (!FileTypeMap.hasOwnProperty(typeText)) {
return {status: false, message: "未知的xm文件类型"}
throw Error("未知的.xm文件类型")
}
let key = oriData[0xf]