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Reconstruct

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MengYX 2020-01-21 19:03:41 +08:00
parent bc138c4078
commit bddde78fcd
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GPG Key ID: E63F9C7303E8F604
9 changed files with 323 additions and 346 deletions
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37
src/App.vue
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@ -85,10 +85,7 @@
<script>
const NcmDecrypt = require("./plugins/ncm");
const QmcDecrypt = require("./plugins/qmc");
const RawDecrypt = require("./plugins/raw");
const MFlacDecrypt = require("./plugins/mflac");
const dec = require("./decrypt/common");
export default {
name: 'app',
components: {},
@ -119,33 +116,9 @@
});
},
handleFile(file) {
let ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase();
(async () => {
let data = null;
switch (ext) {
case "ncm":
data = await NcmDecrypt.Decrypt(file.raw);
break;
case "mp3":
case "flac":
data = await RawDecrypt.Decrypt(file.raw);
break;
case "qmc3":
case "qmc0":
case "qmcflac":
case "qmcogg":
data = await QmcDecrypt.Decrypt(file.raw);
break;
case "mflac":
data = await MFlacDecrypt.Decrypt(file.raw);
break;
default:
data = {
status: false,
message: "不支持此文件格式",
};
break;
}
let data =await dec.CommonDecrypt(file);
if (data.status) {
this.tableData.push(data);
this.$notify.success({
@ -154,8 +127,7 @@
duration: 3000
});
let _rp_data = [data.title, data.artist, data.album];
console.log(data);
window._paq.push(["trackEvent", "Unlock", ext + "," + data.mime, JSON.stringify(_rp_data)]);
window._paq.push(["trackEvent", "Unlock", data.rawExt + "," + data.mime, JSON.stringify(_rp_data)]);
} else {
this.$notify.error({
title: '出现问题',
@ -173,7 +145,6 @@
this.playing_auto = true;
},
handleDelete(index, row) {
console.log(index);
URL.revokeObjectURL(row.file);
URL.revokeObjectURL(row.picture);
this.tableData.splice(index, 1);

44
src/decrypt/common.js Normal file
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@ -0,0 +1,44 @@
const NcmDecrypt = require("./ncm");
const QmcDecrypt = require("./qmc");
const RawDecrypt = require("./raw");
const MFlacDecrypt = require("./mflac");
export {CommonDecrypt}
async function CommonDecrypt(file) {
let raw_ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase();
let raw_filename = file.name.substring(0, file.name.lastIndexOf("."));
let rt_data;
switch (raw_ext) {
case "ncm":// Netease Mp3/Flac
rt_data = await NcmDecrypt.Decrypt(file.raw);
break;
case "mp3":// Raw Mp3
case "flac"://Raw Flac
case "m4a":// todo: Raw M4A
case "tm0":// QQ Music IOS Mp3
case "tm3":// QQ Music IOS Mp3
rt_data = await RawDecrypt.Decrypt(file.raw, raw_filename, raw_ext);
break;
case "qmc3"://QQ Music Android Mp3
case "qmc0"://QQ Music Android Mp3
case "qmcflac"://QQ Music Android Flac
case "qmcogg"://QQ Music Android Ogg
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 "tm2":// todo: QQ Music IOS M4A
case "tm6":// todo: QQ Music IOS M4A
debugger;
break;
default:
rt_data = {status: false, message: "不支持此文件格式",}
}
if (rt_data.status) {
rt_data.rawExt = raw_ext;
rt_data.rawFilename = raw_filename;
}
return rt_data;
}

49
src/plugins/mflac.js → src/decrypt/mflac.js
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@ -1,27 +1,21 @@
const musicMetadata = require("music-metadata-browser");
const util = require("./util");
export {Decrypt}
async function Decrypt(file) {
async function Decrypt(file, raw_filename, raw_ext) {
// 获取扩展名
let filename_ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase();
if (filename_ext !== "mflac") return {
if (raw_ext !== "mflac") return {
status: false,
message: "File type is incorrect!",
};
// 读取文件
const fileBuffer = await new Promise(resolve => {
const reader = new FileReader();
reader.onload = (e) => {
resolve(e.target.result);
};
reader.readAsArrayBuffer(file);
});
const fileBuffer = await util.GetArrayBuffer(file);
const audioData = new Uint8Array(fileBuffer.slice(0, -0x170));
const audioDataLen = audioData.length;
// 转换数据
const seed = new Mask();
if (!seed.DetectMask(audioData)) return{
if (!seed.DetectMask(audioData)) return {
status: false,
message: "此音乐无法解锁，目前mflac格式不提供完整支持",
};
@ -34,35 +28,16 @@ async function Decrypt(file) {
// 读取Meta
let tag = await musicMetadata.parseBlob(musicData);
// 处理无标题歌手
let filename_array = file.name.substring(0, file.name.lastIndexOf(".")).split("-");
let title = tag.common.title;
let artist = tag.common.artist;
if (filename_array.length > 1) {
if (artist === undefined) artist = filename_array[0].trim();
if (title === undefined) title = filename_array[1].trim();
} else if (filename_array.length === 1) {
if (title === undefined) title = filename_array[0].trim();
}
const filename = artist + " - " + title + ".flac";
// 处理无封面
let pic_url = "";
if (tag.common.picture !== undefined && tag.common.picture.length >= 1) {
const picture = tag.common.picture[0];
const blobPic = new Blob([picture.data], {type: picture.format});
pic_url = URL.createObjectURL(blobPic);
}
// 返回*/
const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename, "flac");
let picUrl = util.GetCoverURL(tag);
// 返回
return {
status: true,
message: "",
filename: filename,
title: title,
artist: artist,
filename: info.filename,
title: info.title,
artist: info.artist,
album: tag.common.album,
picture: pic_url,
picture: picUrl,
file: musicUrl,
mime: "audio/flac"
}

171
src/decrypt/ncm.js Normal file
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@ -0,0 +1,171 @@
const CryptoJS = require("crypto-js");
const ID3Writer = require("browser-id3-writer");
const util = require("./util");
const CORE_KEY = CryptoJS.enc.Hex.parse("687a4852416d736f356b496e62617857");
const META_KEY = CryptoJS.enc.Hex.parse("2331346C6A6B5F215C5D2630553C2728");
export {Decrypt};
async function Decrypt(file) {
const fileBuffer = await util.GetArrayBuffer(file);
const dataView = new DataView(fileBuffer);
if (dataView.getUint32(0, true) !== 0x4e455443 ||
dataView.getUint32(4, true) !== 0x4d414446)
return {status: false, message: "此ncm文件已损坏"};
const keyDataObj = getKeyData(dataView, fileBuffer, 10);
const keyBox = getKeyBox(keyDataObj.data);
const musicMetaObj = getMetaData(dataView, fileBuffer, keyDataObj.offset);
const musicMeta = musicMetaObj.data;
let audioOffset = musicMetaObj.offset + dataView.getUint32(musicMetaObj.offset + 5, true) + 13;
let audioData = new Uint8Array(fileBuffer, audioOffset);
for (let cur = 0; cur < audioData.length; ++cur) {
audioData[cur] ^= keyBox[cur & 0xff];
}
if (musicMeta.format === undefined) {
const [f, L, a, C] = audioData;
if (f === 0x66 && L === 0x4c && a === 0x61 && C === 0x43) {
musicMeta.format = "flac";
} else {
musicMeta.format = "mp3";
}
}
const mime = util.AudioMimeType[musicMeta.format];
const artists = [];
musicMeta.artist.forEach(arr => {
artists.push(arr[0]);
});
if (musicMeta.format === "mp3") {
audioData = await writeID3(audioData, artists, musicMeta.musicName, musicMeta.album, musicMeta.albumPic)
}
const musicData = new Blob([audioData], {type: mime});
const musicUrl = URL.createObjectURL(musicData);
const filename = artists.join(" & ") + " - " + musicMeta.musicName + "." + musicMeta.format;
return {
status: true,
filename: filename,
title: musicMeta.musicName,
artist: artists.join(" & "),
album: musicMeta.album,
picture: musicMeta.albumPic,
file: musicUrl,
mime: mime
};
}
async function writeID3(audioData, artistList, title, album, picture) {
const writer = new ID3Writer(audioData);
writer.setFrame("TPE1", artistList)
.setFrame("TIT2", title)
.setFrame("TALB", album);
if (picture !== "") {
try {
const img = await (await fetch(picture)).arrayBuffer();
writer.setFrame('APIC', {
type: 3,
data: img,
description: 'Cover'
})
} catch (e) {
console.log("Fail to write cover image!");
}
}
writer.addTag();
return writer.arrayBuffer;
}
function getKeyData(dataView, fileBuffer, offset) {
const keyLen = dataView.getUint32(offset, true);
offset += 4;
const cipherText = new Uint8Array(fileBuffer, offset, keyLen).map(
uint8 => uint8 ^ 0x64
);
offset += keyLen;
const plainText = CryptoJS.AES.decrypt(
{ciphertext: CryptoJS.lib.WordArray.create(cipherText)},
CORE_KEY,
{
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.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 {offset: offset, data: result.slice(17)};
}
function getKeyBox(keyData) {
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];
});
}
/**
* @typedef {Object} MusicMetaType
* @property {Number} musicId
* @property {String} musicName
* @property {[[String, Number]]} artist
* @property {String} album
* @property {"flac"|"mp3"} format
* @property {String} albumPic
*/
function getMetaData(dataView, fileBuffer, offset) {
const metaDataLen = dataView.getUint32(offset, true);
offset += 4;
if (metaDataLen === 0) {
return {};
}
const cipherText = new Uint8Array(fileBuffer, offset, metaDataLen).map(
data => data ^ 0x63
);
offset += metaDataLen;
const plainText = CryptoJS.AES.decrypt({
ciphertext: CryptoJS.enc.Base64.parse(
CryptoJS.lib.WordArray.create(cipherText.slice(22)).toString(CryptoJS.enc.Utf8)
)
},
META_KEY,
{mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7}
);
const result = JSON.parse(plainText.toString(CryptoJS.enc.Utf8).slice(6));
result.albumPic = result.albumPic.replace("http:", "https:");
return {data: result, offset: offset};
}

65
src/plugins/qmc.js → src/decrypt/qmc.js
View File

@ -1,4 +1,5 @@
const musicMetadata = require("music-metadata-browser");
const util = require("./util");
export {Decrypt}
const SEED_MAP = [
[0x4a, 0xd6, 0xca, 0x90, 0x67, 0xf7, 0x52],
@ -9,17 +10,12 @@ const SEED_MAP = [
[0x1d, 0x95, 0xde, 0x9f, 0x84, 0x11, 0xf4],
[0x0e, 0x74, 0xbb, 0x90, 0xbc, 0x3f, 0x92],
[0x00, 0x09, 0x5b, 0x9f, 0x62, 0x66, 0xa1]];
const audio_mime_type = {
mp3: "audio/mpeg",
flac: "audio/flac",
ogg: "audio/ogg"
};
async function Decrypt(file) {
async function Decrypt(file, raw_filename, raw_ext) {
// 获取扩展名
let filename_ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase();
let new_ext;
switch (filename_ext) {
switch (raw_ext) {
case "qmc0":
case "qmc3":
new_ext = "mp3";
@ -31,62 +27,33 @@ async function Decrypt(file) {
new_ext = "flac";
break;
default:
return {
status: false,
message: "File type is incorrect!",
};
return {status: false, message: "File type is incorrect!"}
}
const mime = audio_mime_type[new_ext];
const mime = util.AudioMimeType[new_ext];
// 读取文件
const fileBuffer = await new Promise(resolve => {
const reader = new FileReader();
reader.onload = (e) => {
resolve(e.target.result);
};
reader.readAsArrayBuffer(file);
});
const fileBuffer = await util.GetArrayBuffer(file);
const audioData = new Uint8Array(fileBuffer);
const audioDataLen = audioData.length;
// 转换数据
const seed = new Mask();
for (let cur = 0; cur < audioDataLen; ++cur) {
for (let cur = 0; cur < audioData.length; ++cur) {
audioData[cur] ^= seed.NextMask();
}
// 导出
const musicData = new Blob([audioData], {
type: mime
});
const musicData = new Blob([audioData], {type: mime});
const musicUrl = URL.createObjectURL(musicData);
// 读取Meta
let tag = await musicMetadata.parseBlob(musicData);
const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename, raw_ext);
let picUrl = util.GetCoverURL(tag);
// 处理无标题歌手
let filename_array = file.name.substring(0, file.name.lastIndexOf(".")).split("-");
let title = tag.common.title;
let artist = tag.common.artist;
if (filename_array.length > 1) {
if (artist === undefined) artist = filename_array[0].trim();
if (title === undefined) title = filename_array[1].trim();
} else if (filename_array.length === 1) {
if (title === undefined) title = filename_array[0].trim();
}
const filename = artist + " - " + title + "." + new_ext;
// 处理无封面
let pic_url = "";
if (tag.common.picture !== undefined && tag.common.picture.length >= 1) {
const picture = tag.common.picture[0];
const blobPic = new Blob([picture.data], {type: picture.format});
pic_url = URL.createObjectURL(blobPic);
}
// 返回
return {
status:true,
filename: filename,
title: title,
artist: artist,
status: true,
filename: info.filename,
title: info.title,
artist: info.artist,
album: tag.common.album,
picture: pic_url,
picture: picUrl,
file: musicUrl,
mime: mime
}

25
src/decrypt/raw.js Normal file
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@ -0,0 +1,25 @@
const musicMetadata = require("music-metadata-browser");
const util = require("./util");
export {Decrypt}
async function Decrypt(file, raw_filename, raw_ext) {
let tag = await musicMetadata.parseBlob(file);
let fileUrl = URL.createObjectURL(file);
const picUrl = util.GetCoverURL(tag);
const mime = util.AudioMimeType[raw_ext];
const info = util.GetFileInfo(tag.common.artist, tag.common.title, raw_filename, raw_ext);
return {
status: true,
filename: info.filename,
title: info.title,
artist: info.artist,
album: tag.common.album,
picture: picUrl,
file: fileUrl,
mime: mime
}
}

51
src/decrypt/util.js Normal file
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@ -0,0 +1,51 @@
export {GetArrayBuffer, GetFileInfo, GetCoverURL, AudioMimeType}
// Also a new draft API: blob.arrayBuffer()
async function GetArrayBuffer(blobObject) {
return await new Promise(resolve => {
const reader = new FileReader();
reader.onload = (e) => {
resolve(e.target.result);
};
reader.readAsArrayBuffer(blobObject);
});
}
const AudioMimeType = {
mp3: "audio/mpeg",
flac: "audio/flac",
m4a: "audio/mp4",
ogg: "audio/ogg"
};
function GetFileInfo(artist, title, filenameNoExt, ext) {
let newArtist = "", newTitle = "";
let filenameArray = filenameNoExt.split("-");
if (filenameArray.length > 1) {
newArtist = filenameArray[0].trim();
newTitle = filenameArray[1].trim();
} else if (filenameArray.length === 1) {
newTitle = filenameArray[0].trim();
}
if (typeof artist == "string" && artist !== "") {
newArtist = artist;
}
if (typeof title == "string" && title !== "") {
newTitle = title;
}
let newFilename = newArtist + " - " + newTitle + "." + ext;
return {artist: newArtist, title: newTitle, filename: newFilename};
}
/**
* @return {string}
*/
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});
pic_url = URL.createObjectURL(pic);
}
return pic_url;
}

183
src/plugins/ncm.js
View File

@ -1,183 +0,0 @@
const CryptoJS = require("crypto-js");
const ID3Writer = require("browser-id3-writer");
const CORE_KEY = CryptoJS.enc.Hex.parse("687a4852416d736f356b496e62617857");
const META_KEY = CryptoJS.enc.Hex.parse("2331346C6A6B5F215C5D2630553C2728");
const audio_mime_type = {
mp3: "audio/mpeg",
flac: "audio/flac"
};
export {Decrypt};
async function Decrypt(file) {
const fileBuffer = await new Promise(reslove => {
const reader = new FileReader();
reader.onload = (e) => {
reslove(e.target.result);
};
reader.readAsArrayBuffer(file);
});
const dataView = new DataView(fileBuffer);
if (dataView.getUint32(0, true) !== 0x4e455443 ||
dataView.getUint32(4, true) !== 0x4d414446
) return {
status: false,
message: "此ncm文件已损坏",
};
let offset = 10;
const keyData = (() => {
const keyLen = dataView.getUint32(offset, true);
offset += 4;
const cipherText = new Uint8Array(fileBuffer, offset, keyLen).map(
uint8 => uint8 ^ 0x64
);
offset += keyLen;
const plainText = CryptoJS.AES.decrypt(
{ciphertext: CryptoJS.lib.WordArray.create(cipherText)},
CORE_KEY,
{
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.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);
})();
const keyBox = (() => {
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];
});
})();
/**
* @typedef {Object} MusicMetaType
* @property {Number} musicId
* @property {String} musicName
* @property {[[String, Number]]} artist
* @property {String} album
* @property {"flac"|"mp3"} format
* @property {String} albumPic
*/
/** @type {MusicMetaType|undefined} */
const musicMeta = (() => {
const metaDataLen = dataView.getUint32(offset, true);
offset += 4;
if (metaDataLen === 0) {
return {};
}
const cipherText = new Uint8Array(fileBuffer, offset, metaDataLen).map(
data => data ^ 0x63
);
offset += metaDataLen;
const plainText = CryptoJS.AES.decrypt(
{
ciphertext: CryptoJS.enc.Base64.parse(
CryptoJS.lib.WordArray.create(cipherText.slice(22)).toString(CryptoJS.enc.Utf8)
)
},
META_KEY,
{mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7}
);
const result = JSON.parse(plainText.toString(CryptoJS.enc.Utf8).slice(6));
result.albumPic = result.albumPic.replace("http:", "https:");
return result;
})();
offset += dataView.getUint32(offset + 5, true) + 13;
let audioData = new Uint8Array(fileBuffer, offset);
let audioDataLen = audioData.length;
for (let cur = 0; cur < audioDataLen; ++cur) {
audioData[cur] ^= keyBox[cur & 0xff];
}
if (musicMeta.format === undefined) {
const [f, L, a, C] = audioData;
if (f === 0x66 && L === 0x4c && a === 0x61 && C === 0x43) {
musicMeta.format = "flac";
} else {
musicMeta.format = "mp3";
}
}
const mime = audio_mime_type[musicMeta.format];
const artists = [];
musicMeta.artist.forEach(arr => {
artists.push(arr[0]);
});
if (musicMeta.format === "mp3") {
const writer = new ID3Writer(audioData);
writer.setFrame("TPE1", artists)
.setFrame("TIT2", musicMeta.musicName)
.setFrame("TALB", musicMeta.album);
if (musicMeta.albumPic !== "") {
try {
const img = await (await fetch(musicMeta.albumPic)).arrayBuffer();
writer.setFrame('APIC', {
type: 3,
data: img,
description: 'Cover'
})
} catch (e) {
console.log("Fail to write cover image!");
}
}
writer.addTag();
audioData = writer.arrayBuffer;
}
const musicData = new Blob([audioData], {
type: mime
});
const musicUrl = URL.createObjectURL(musicData);
const filename = artists.join(" & ") + " - " + musicMeta.musicName + "." + musicMeta.format;
return {
status: true,
filename: filename,
title: musicMeta.musicName,
artist: artists.join(" & "),
album: musicMeta.album,
picture: musicMeta.albumPic,
file: musicUrl,
mime: mime
};
}

44
src/plugins/raw.js
View File

@ -1,44 +0,0 @@
const musicMetadata = require("music-metadata-browser");
export {Decrypt}
const audio_mime_type = {
mp3: "audio/mpeg",
flac: "audio/flac"
};
async function Decrypt(file) {
let tag = await musicMetadata.parseBlob(file);
let pic_url = "";
if (tag.common.picture !== undefined && tag.common.picture.length > 0) {
let pic = new Blob([tag.common.picture[0].data], {type: tag.common.picture[0].format});
pic_url = URL.createObjectURL(pic);
}
let file_url = URL.createObjectURL(file);
let filename_no_ext = file.name.substring(0, file.name.lastIndexOf("."));
let filename_array = filename_no_ext.split("-");
let filename_ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase();
const mime = audio_mime_type[filename_ext];
let title = tag.common.title;
let artist = tag.common.artist;
if (filename_array.length > 1) {
if (artist === undefined) artist = filename_array[0].trim();
if (title === undefined) title = filename_array[1].trim();
} else if (filename_array.length === 1) {
if (title === undefined) title = filename_array[0].trim();
}
const filename = artist + " - " + title + "." + filename_ext;
return {
status:true,
filename: filename,
title: title,
artist: artist,
album: tag.common.album,
picture: pic_url,
file: file_url,
mime: mime
}
}