mirror of
https://git.um-react.app/um/web.git
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feat: use static cipher instead of mask
(cherry picked from commit cd6b84ad7eed489f9bcbd72d847cd4d704052b0c)
This commit is contained in:
MengYX
@@ -1,12 +1,13 @@
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import {QmcMask, QmcMaskGetDefault} from "./qmcMask";
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import {toByteArray as Base64Decode} from 'base64-js'
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import {QmcStaticCipher} from "./qmc_cipher";
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import {
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AudioMimeType,
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GetArrayBuffer,
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GetCoverFromFile,
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GetImageFromURL,
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GetMetaFromFile,
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SniffAudioExt, WriteMetaToFlac, WriteMetaToMp3
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AudioMimeType,
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GetArrayBuffer,
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GetCoverFromFile,
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GetImageFromURL,
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GetMetaFromFile,
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SniffAudioExt,
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WriteMetaToFlac,
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WriteMetaToMp3
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} from "@/decrypt/utils";
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import {parseBlob as metaParseBlob} from "music-metadata-browser";
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import {DecryptQMCv2} from "./qmcv2";
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@@ -14,133 +15,125 @@ import {DecryptQMCv2} from "./qmcv2";
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import iconv from "iconv-lite";
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import {DecryptResult} from "@/decrypt/entity";
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import {queryAlbumCover, queryKeyInfo, reportKeyUsage} from "@/utils/api";
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import {queryAlbumCover} from "@/utils/api";
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interface Handler {
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ext: string
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version: number
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ext: string
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version: number
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}
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export const HandlerMap: { [key: string]: Handler } = {
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"mgg": {ext: "ogg", version: 2},
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"mgg1": {ext: "ogg", version: 2},
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"mflac": {ext: "flac", version: 2},
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"mflac0": {ext: "flac", version: 2},
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"mgg": {ext: "ogg", version: 2},
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"mgg1": {ext: "ogg", version: 2},
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"mflac": {ext: "flac", version: 2},
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"mflac0": {ext: "flac", version: 2},
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// qmcflac / qmcogg:
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// 有可能是 v2 加密但混用同一个后缀名。
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"qmcflac": {ext: "flac", version: 2},
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"qmcogg": {ext: "ogg", version: 2},
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// qmcflac / qmcogg:
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// 有可能是 v2 加密但混用同一个后缀名。
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"qmcflac": {ext: "flac", version: 2},
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"qmcogg": {ext: "ogg", version: 2},
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"qmc0": {ext: "mp3", version: 1},
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"qmc2": {ext: "ogg", version: 1},
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"qmc3": {ext: "mp3", version: 1},
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"bkcmp3": {ext: "mp3", version: 1},
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"bkcflac": {ext: "flac", version: 1},
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"tkm": {ext: "m4a", version: 1},
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"666c6163": {ext: "flac", version: 1},
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"6d7033": {ext: "mp3", version: 1},
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"6f6767": {ext: "ogg", version: 1},
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"6d3461": {ext: "m4a", version: 1},
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"776176": {ext: "wav", version: 1}
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"qmc0": {ext: "mp3", version: 1},
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"qmc2": {ext: "ogg", version: 1},
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"qmc3": {ext: "mp3", version: 1},
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"bkcmp3": {ext: "mp3", version: 1},
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"bkcflac": {ext: "flac", version: 1},
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"tkm": {ext: "m4a", version: 1},
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"666c6163": {ext: "flac", version: 1},
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"6d7033": {ext: "mp3", version: 1},
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"6f6767": {ext: "ogg", version: 1},
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"6d3461": {ext: "m4a", version: 1},
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"776176": {ext: "wav", version: 1}
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};
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export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string): Promise<DecryptResult> {
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if (!(raw_ext in HandlerMap)) throw `Qmc cannot handle type: ${raw_ext}`;
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const handler = HandlerMap[raw_ext];
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let { version } = handler;
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if (!(raw_ext in HandlerMap)) throw `Qmc cannot handle type: ${raw_ext}`;
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const handler = HandlerMap[raw_ext];
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let {version} = handler;
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const fileBuffer = await GetArrayBuffer(file);
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let musicDecoded: Uint8Array|undefined;
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const fileBuffer = await GetArrayBuffer(file);
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let musicDecoded: Uint8Array | undefined;
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if (version === 2) {
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const v2Decrypted = await DecryptQMCv2(fileBuffer);
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// 如果 v2 检测失败，降级到 v1 再尝试一次
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if (v2Decrypted) {
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musicDecoded = v2Decrypted;
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} else {
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version = 1;
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if (version === 2) {
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const v2Decrypted = await DecryptQMCv2(fileBuffer);
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// 如果 v2 检测失败，降级到 v1 再尝试一次
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if (v2Decrypted) {
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musicDecoded = v2Decrypted;
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} else {
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version = 1;
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}
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}
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if (version === 1) {
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const seed = new QmcStaticCipher();
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musicDecoded = new Uint8Array(fileBuffer)
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seed.decrypt(musicDecoded, 0);
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} else if (!musicDecoded) {
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throw new Error(`解密失败: ${raw_ext}`);
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}
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const ext = SniffAudioExt(musicDecoded, handler.ext);
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const mime = AudioMimeType[ext];
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let musicBlob = new Blob([musicDecoded], {type: mime});
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const musicMeta = await metaParseBlob(musicBlob);
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for (let metaIdx in musicMeta.native) {
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if (!musicMeta.native.hasOwnProperty(metaIdx)) continue
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if (musicMeta.native[metaIdx].some(item => item.id === "TCON" && item.value === "(12)")) {
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console.warn("try using gbk encoding to decode meta")
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musicMeta.common.artist = iconv.decode(new Buffer(musicMeta.common.artist ?? ""), "gbk");
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musicMeta.common.title = iconv.decode(new Buffer(musicMeta.common.title ?? ""), "gbk");
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musicMeta.common.album = iconv.decode(new Buffer(musicMeta.common.album ?? ""), "gbk");
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}
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}
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const info = GetMetaFromFile(raw_filename, musicMeta.common.title, musicMeta.common.artist)
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let imgUrl = GetCoverFromFile(musicMeta);
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if (!imgUrl) {
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imgUrl = await getCoverImage(info.title, info.artist, musicMeta.common.album);
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if (imgUrl) {
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const imageInfo = await GetImageFromURL(imgUrl);
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if (imageInfo) {
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imgUrl = imageInfo.url
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try {
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const newMeta = {picture: imageInfo.buffer, title: info.title, artists: info.artist?.split(" _ ")}
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if (ext === "mp3") {
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musicDecoded = WriteMetaToMp3(Buffer.from(musicDecoded), newMeta, musicMeta)
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musicBlob = new Blob([musicDecoded], {type: mime});
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} else if (ext === 'flac') {
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musicDecoded = WriteMetaToFlac(Buffer.from(musicDecoded), newMeta, musicMeta)
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musicBlob = new Blob([musicDecoded], {type: mime});
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} else {
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console.info("writing metadata for " + ext + " is not being supported for now")
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}
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} catch (e) {
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console.warn("Error while appending cover image to file " + e)
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}
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}
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}
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if (version === 1) {
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const seed = QmcMaskGetDefault();
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musicDecoded = seed.Decrypt(new Uint8Array(fileBuffer));
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} else if (!musicDecoded) {
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throw new Error(`解密失败: ${raw_ext}`);
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}
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const ext = SniffAudioExt(musicDecoded, handler.ext);
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const mime = AudioMimeType[ext];
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let musicBlob = new Blob([musicDecoded], {type: mime});
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const musicMeta = await metaParseBlob(musicBlob);
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for (let metaIdx in musicMeta.native) {
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if (!musicMeta.native.hasOwnProperty(metaIdx)) continue
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if (musicMeta.native[metaIdx].some(item => item.id === "TCON" && item.value === "(12)")) {
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console.warn("try using gbk encoding to decode meta")
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musicMeta.common.artist = iconv.decode(new Buffer(musicMeta.common.artist ?? ""), "gbk");
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musicMeta.common.title = iconv.decode(new Buffer(musicMeta.common.title ?? ""), "gbk");
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musicMeta.common.album = iconv.decode(new Buffer(musicMeta.common.album ?? ""), "gbk");
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}
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}
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const info = GetMetaFromFile(raw_filename, musicMeta.common.title, musicMeta.common.artist)
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let imgUrl = GetCoverFromFile(musicMeta);
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if (!imgUrl) {
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imgUrl = await getCoverImage(info.title, info.artist, musicMeta.common.album);
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if (imgUrl) {
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const imageInfo = await GetImageFromURL(imgUrl);
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if (imageInfo) {
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imgUrl = imageInfo.url
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try {
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const newMeta = {picture: imageInfo.buffer, title: info.title, artists: info.artist?.split(" _ ")}
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if (ext === "mp3") {
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musicDecoded = WriteMetaToMp3(Buffer.from(musicDecoded), newMeta, musicMeta)
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musicBlob = new Blob([musicDecoded], {type: mime});
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} else if (ext === 'flac') {
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musicDecoded = WriteMetaToFlac(Buffer.from(musicDecoded), newMeta, musicMeta)
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musicBlob = new Blob([musicDecoded], {type: mime});
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} else {
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console.info("writing metadata for " + ext + " is not being supported for now")
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}
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} catch (e) {
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console.warn("Error while appending cover image to file " + e)
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}
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}
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}
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}
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return {
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title: info.title,
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artist: info.artist,
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ext: ext,
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album: musicMeta.common.album,
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picture: imgUrl,
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file: URL.createObjectURL(musicBlob),
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blob: musicBlob,
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mime: mime
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}
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}
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return {
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title: info.title,
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artist: info.artist,
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ext: ext,
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album: musicMeta.common.album,
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picture: imgUrl,
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file: URL.createObjectURL(musicBlob),
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blob: musicBlob,
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mime: mime
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}
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}
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async function queryKey(keyData: Uint8Array, filename: string, format: string): Promise<QmcMask | undefined> {
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try {
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const data = await queryKeyInfo(keyData, filename, format)
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return new QmcMask(Base64Decode(data.Matrix44));
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} catch (e) {
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console.warn(e);
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}
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}
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async function getCoverImage(title: string, artist?: string, album?: string): Promise<string> {
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const song_query_url = "https://stats.ixarea.com/apis" + "/music/qq-cover"
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try {
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const data = await queryAlbumCover(title, artist, album)
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return `${song_query_url}/${data.Type}/${data.Id}`
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} catch (e) {
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console.warn(e);
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}
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return ""
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const song_query_url = "https://stats.ixarea.com/apis" + "/music/qq-cover"
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try {
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const data = await queryAlbumCover(title, artist, album)
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return `${song_query_url}/${data.Type}/${data.Id}`
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} catch (e) {
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console.warn(e);
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}
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return ""
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}
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