mirror of
https://github.com/lecepin/WeChatVideoDownloader.git
synced 2025-04-05 04:22:50 +08:00
decryption using js.
This commit is contained in:
aynakeya
parent
2ddcb51aa9
commit
2720364707
602282
electron/decrypt.js
Normal file
602282
electron/decrypt.js
Normal file
File diff suppressed because one or more lines are too long
@ -18,21 +18,7 @@ export default function initIPC() {
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ipcMain.handle('invoke_启动服务', async (event, arg) => {
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return startServer({
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interceptCallback: phase => async (req, res) => {
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if (phase === 'response' && res?._data?.headers?.['content-type'] == 'video/mp4') {
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const fixUrl = {}
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if(req.fullUrl().includes("video.qq.com")){
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fixUrl.fixUrl = req.fullUrl().replace(/\/20302\//g, '/20304/');
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fixUrl.hdUrl = fixUrl.fixUrl.replace(/(\?|&)(?!(encfilekey=|token=))[^&]+/g, '');
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}
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win?.webContents?.send?.('VIDEO_CAPTURE', {
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url: req.fullUrl(),
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size: res?._data?.headers?.['content-length'] ?? 0,
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...fixUrl
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});
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}
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},
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win: win,
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setProxyErrorCallback: err => {
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console.log('开启代理失败', err);
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},
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@ -49,9 +35,10 @@ export default function initIPC() {
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return result?.[0];
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});
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ipcMain.handle('invoke_下载视频', async (event, { url, savePath }) => {
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ipcMain.handle('invoke_下载视频', async (event, { url, decodeKey, savePath }) => {
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console.log(url,decodeKey);
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return downloadFile(
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url,
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url,decodeKey,
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`${savePath}/${Date.now()}.mp4`,
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throttle(value => win?.webContents?.send?.('e_进度变化', value), 1000),
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).catch(err => {
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@ -11,8 +11,66 @@ if (process.platform === 'win32') {
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process.env.OPENSSL_CONF = CONFIG.OPEN_SSL_CNF_PATH;
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}
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const injection_script =`
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(function () {
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if (window.wvds !== undefined) {
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return
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}
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let receiver_url = "https://aaaa.com"
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function send_response_if_is_video(response) {
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if (response == undefined) {
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return;
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}
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if (response["err_msg"] != "H5ExtTransfer:ok") {
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return;
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}
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let value = JSON.parse(response["jsapi_resp"]["resp_json"]);
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if (value["object"] == undefined || value["object"]["object_desc"] == undefined || value["object"]["object_desc"]["media"].length == 0) {
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return
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}
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let media = value["object"]["object_desc"]["media"][0]
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let video_data = {
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"decode_key": media["decode_key"],
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"url": media["url"]+media["url_token"],
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"size": media["file_size"],
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"description": value["object"]["object_desc"]["description"].trim(),
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"uploader": value["object"]["nickname"]
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}
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fetch(receiver_url, {
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method: 'POST',
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mode: 'no-cors',
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body: JSON.stringify(video_data),
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}).then((resp) => {
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console.log(\`video data for \${video_data["description"]} sent\`);
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});
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}
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function wrapper(name,origin) {
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console.log(\`injecting \${name}\`);
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return function() {
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let cmdName = arguments[0];
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if (arguments.length == 3) {
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let original_callback = arguments[2];
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arguments[2] = async function () {
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if (arguments.length == 1) {
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send_response_if_is_video(arguments[0]);
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}
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return await original_callback.apply(this, arguments);
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}
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}
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let result = origin.apply(this,arguments);
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return result;
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}
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}
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console.log(\`------- Invoke WechatVideoDownloader Service ---------\`);
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window.WeixinJSBridge.invoke = wrapper("WeixinJSBridge.invoke",window.WeixinJSBridge.invoke);
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window.wvds = true;
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})()
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`;
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export async function startServer({
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interceptCallback = f => f => f,
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win,
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setProxyErrorCallback = f => f,
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}) {
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const port = await getPort();
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@ -40,15 +98,27 @@ export async function startServer({
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proxy.intercept(
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{
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phase: 'request',
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hostname: 'aaaa.com',
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as: 'json'
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},
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(req, res) => {
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res.string = "ok";
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res.statusCode = 200;
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win?.webContents?.send?.('VIDEO_CAPTURE', req.json)
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},
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interceptCallback('request'),
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);
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proxy.intercept(
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{
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phase: 'response',
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hostname: 'res.wx.qq.com',
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as: "string"
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},
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async (req, res) => {
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if (req.url.includes("polyfills.publish")) {
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res.string = res.string + "\n" + injection_script;
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}
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},
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interceptCallback('response'),
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);
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});
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}
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@ -2,6 +2,8 @@ import { get } from 'axios';
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import { app, dialog, shell } from 'electron';
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import semver from 'semver';
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import fs from 'fs';
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import {getDecryptionArray} from './decrypt';
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import {Transform } from 'stream';
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// packageUrl 需要包含 { "version": "1.0.0" } 结构
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function checkUpdate(
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@ -28,7 +30,27 @@ function checkUpdate(
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.catch(err => {});
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}
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function downloadFile(url, fullFileName, progressCallback) {
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function xorTransform(decryptionArray) {
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let processedBytes = 0;
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return new Transform({
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transform(chunk, encoding, callback) {
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if (processedBytes < decryptionArray.length) {
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let remaining = Math.min(decryptionArray.length - processedBytes, chunk.length);
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for (let i = 0; i < remaining; i++) {
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chunk[i] = chunk[i] ^ decryptionArray[processedBytes + i];
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}
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processedBytes += remaining;
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}
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this.push(chunk);
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callback();
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}
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});
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}
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function downloadFile(url,decodeKey, fullFileName, progressCallback) {
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const xorStream = xorTransform(getDecryptionArray(decodeKey));
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return get(url, {
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responseType: 'stream',
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headers: {
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@ -47,7 +69,7 @@ function downloadFile(url, fullFileName, progressCallback) {
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data.on('error', err => reject(err));
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data.pipe(
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data.pipe(xorStream).pipe(
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fs.createWriteStream(fullFileName).on('finish', () => {
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resolve({
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fullFileName,
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@ -61,7 +61,7 @@ function App() {
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dataIndex: 'action',
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key: 'action',
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width: '210px',
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render: (_, { url, hdUrl, fixUrl, fullFileName, }) => (
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render: (_, { url, decodeKey, hdUrl, fixUrl, fullFileName, }) => (
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<div>
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{fullFileName ? (
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<Button
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@ -80,7 +80,7 @@ function App() {
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icon={<DownloadOutlined />}
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type="primary"
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onClick={() => {
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send({ type: 'e_下载', url: (hdUrl || url) });
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send({ type: 'e_下载', url: (hdUrl || url), decodeKey: decodeKey });
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}}
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size="small"
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>
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12
src/fsm.js
12
src/fsm.js
@ -161,8 +161,8 @@ export default createMachine(
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.finally(() => send('e_重新检测'));
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},
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invoke_启动服务: (context, event) => send => {
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const fnDealVideoCapture = (eName, { url, size, ...other }) => {
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send({ type: 'e_视频捕获', url, size, ...other });
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const fnDealVideoCapture = (eName, { url, size, description, decode_key, ...other }) => {
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send({ type: 'e_视频捕获', url, size, description, decodeKey: decode_key, ...other });
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};
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ipcRenderer
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@ -190,11 +190,12 @@ export default createMachine(
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.catch(() => send('e_取消'));
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},
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invoke_下载视频:
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({ currentUrl, savePath }) =>
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({ currentUrl, savePath, decodeKey }) =>
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send => {
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ipcRenderer
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.invoke('invoke_下载视频', {
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url: currentUrl,
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decodeKey: decodeKey,
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savePath,
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})
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.then(({ fullFileName }) => {
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@ -217,7 +218,7 @@ export default createMachine(
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},
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},
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actions: {
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action_视频捕获: actions.assign(({ captureList }, { size, url, ...other }) => {
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action_视频捕获: actions.assign(({ captureList }, { url, size, description, decode_key, ...other }) => {
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captureList.push({ size, url, prettySize: prettyBytes(+size), ...other });
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return {
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@ -229,9 +230,10 @@ export default createMachine(
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captureList: [],
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};
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}),
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action_设置当前地址: actions.assign((_, { url }) => {
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action_设置当前地址: actions.assign((_, { url,decodeKey }) => {
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return {
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currentUrl: url,
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decodeKey: decodeKey,
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};
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}),
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action_存储下载位置: actions.assign((_, { data }) => {
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