267 lines
10 KiB
JavaScript
267 lines
10 KiB
JavaScript
const { app, BrowserWindow, ipcMain, shell } = require('electron');
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const path = require('path');
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const https = require('https');
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const http = require('http');
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function createWindow() {
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const win = new BrowserWindow({
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width: 1200,
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height: 800,
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frame: false,
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webPreferences: {
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nodeIntegration: false,
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contextIsolation: true,
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preload: path.join(__dirname, 'preload.cjs'),
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sandbox: false
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}
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});
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const isDev = process.env.npm_lifecycle_event === 'electron:dev';
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if (isDev) {
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win.loadURL('http://localhost:5173');
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win.webContents.openDevTools();
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} else {
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// Production: Load the built file
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// dist-react is in the same directory as main.cjs
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win.loadFile(path.join(__dirname, 'dist-react', 'index.html'));
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}
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}
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app.whenReady().then(() => {
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createWindow();
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ipcMain.on('window-minimize', () => {
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const win = BrowserWindow.getFocusedWindow();
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if (win) win.minimize();
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});
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ipcMain.on('window-maximize', () => {
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const win = BrowserWindow.getFocusedWindow();
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if (win) {
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if (win.isMaximized()) win.unmaximize();
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else win.maximize();
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}
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});
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ipcMain.on('window-close', () => {
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const win = BrowserWindow.getFocusedWindow();
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if (win) win.close();
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});
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// Helper to fetch metadata (Zero-Knowledge: Client fetches previews)
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ipcMain.handle('fetch-metadata', async (event, url) => {
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return new Promise((resolve) => {
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// Check for direct video links to avoid downloading large files
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const videoExtensions = ['.mp4', '.webm', '.ogg', '.mov'];
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const imageExtensions = ['.gif', '.png', '.jpg', '.jpeg', '.webp'];
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const lowerUrl = url.toLowerCase();
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if (videoExtensions.some(ext => lowerUrl.endsWith(ext))) {
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const filename = url.split('/').pop();
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resolve({
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title: filename,
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siteName: new URL(url).hostname,
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video: url,
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image: null, // No thumbnail for now unless we generate one
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description: 'Video File'
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});
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return;
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}
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if (imageExtensions.some(ext => lowerUrl.endsWith(ext))) {
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const filename = url.split('/').pop();
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resolve({
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title: filename,
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siteName: new URL(url).hostname,
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video: null,
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image: url, // Direct image/gif
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description: 'Image File'
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});
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return;
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}
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const client = url.startsWith('https') ? https : http;
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const req = client.get(url, (res) => {
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let data = '';
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res.on('data', (chunk) => data += chunk);
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res.on('end', () => {
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// Simple Regex Parser for OG Tags to avoid dependencies
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const getMeta = (prop) => {
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const regex = new RegExp(`<meta\\s+(?:name|property)=["'](?:og:)?${prop}["']\\s+content=["'](.*?)["']`, 'i');
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const match = data.match(regex);
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return match ? match[1] : null;
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};
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const getTitle = () => {
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const regex = /<title>(.*?)<\/title>/i;
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const match = data.match(regex);
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return match ? match[1] : null;
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};
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const metadata = {
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title: getMeta('title') || getTitle(),
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description: getMeta('description'),
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image: getMeta('image'),
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siteName: getMeta('site_name'),
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themeColor: getMeta('theme-color')
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};
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resolve(metadata);
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});
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});
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req.on('error', (err) => {
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console.error('Metadata fetch error:', err);
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resolve(null);
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});
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});
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});
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ipcMain.handle('open-external', async (event, url) => {
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await shell.openExternal(url);
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});
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ipcMain.handle('get-screen-sources', async () => {
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const { desktopCapturer } = require('electron');
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const sources = await desktopCapturer.getSources({
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types: ['window', 'screen'],
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thumbnailSize: { width: 450, height: 250, borderRadius: '8px' },
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fetchWindowIcons: true
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});
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return sources.map(source => ({
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id: source.id,
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name: source.name,
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thumbnail: source.thumbnail.toDataURL(),
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appIcon: source.appIcon ? source.appIcon.toDataURL() : null
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}));
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});
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// Crypto Handlers
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const crypto = require('crypto');
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ipcMain.handle('generate-keys', async () => {
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const generateRSA = () => new Promise((resolve, reject) => {
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crypto.generateKeyPair('rsa', {
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modulusLength: 2048,
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publicKeyEncoding: { type: 'spki', format: 'pem' },
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privateKeyEncoding: { type: 'pkcs8', format: 'pem' }
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}, (err, pub, priv) => { /* args are (err, publicKey, privateKey) */
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if (err) reject(err); else resolve({ pub, priv });
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});
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});
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const generateEd = () => new Promise((resolve, reject) => {
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crypto.generateKeyPair('ed25519', {
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publicKeyEncoding: { type: 'spki', format: 'pem' },
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privateKeyEncoding: { type: 'pkcs8', format: 'pem' }
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}, (err, pub, priv) => {
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if (err) reject(err); else resolve({ pub, priv });
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});
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});
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const [rsa, ed] = await Promise.all([generateRSA(), generateEd()]);
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return {
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rsaPub: rsa.pub,
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rsaPriv: rsa.priv,
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edPub: ed.pub,
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edPriv: ed.priv
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};
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});
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ipcMain.handle('random-bytes', (event, size) => {
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return crypto.randomBytes(size).toString('hex');
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});
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ipcMain.handle('sha256', (event, data) => {
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return crypto.createHash('sha256').update(data).digest('hex');
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});
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ipcMain.handle('sign-message', (event, privateKeyPem, message) => {
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// message should be a string or buffer
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return crypto.sign(null, Buffer.from(message), privateKeyPem).toString('hex');
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});
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ipcMain.handle('verify-signature', (event, publicKeyPem, message, signature) => {
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return crypto.verify(null, Buffer.from(message), publicKeyPem, Buffer.from(signature, 'hex'));
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});
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ipcMain.handle('derive-auth-keys', (event, password, salt) => {
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return new Promise((resolve, reject) => {
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crypto.scrypt(password, salt, 64, (err, derivedKey) => {
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if (err) reject(err);
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else {
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const dak = derivedKey.subarray(0, 32).toString('hex');
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const dek = derivedKey.subarray(32, 64);
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resolve({ dak, dek });
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}
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});
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});
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});
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ipcMain.handle('public-encrypt', (event, publicKeyPem, data) => {
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// data can be string or buffer. Returns hex.
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const buffer = Buffer.from(data);
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return crypto.publicEncrypt({
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key: publicKeyPem,
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padding: crypto.constants.RSA_PKCS1_OAEP_PADDING,
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oaepHash: "sha256",
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}, buffer).toString('hex');
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});
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ipcMain.handle('private-decrypt', (event, privateKeyPem, encryptedHex) => {
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const buffer = Buffer.from(encryptedHex, 'hex');
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return crypto.privateDecrypt({
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key: privateKeyPem,
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padding: crypto.constants.RSA_PKCS1_OAEP_PADDING,
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oaepHash: "sha256",
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}, buffer).toString(); // Assuming utf8 string output
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});
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ipcMain.handle('encrypt-data', (event, plaintext, key) => {
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console.log('encrypt-data called with:', {
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plaintextType: typeof plaintext,
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isBuffer: Buffer.isBuffer(plaintext),
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keyType: typeof key,
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keyIsBuffer: Buffer.isBuffer(plaintext)
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});
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if (plaintext === undefined) throw new TypeError('plaintext is undefined');
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if (key === undefined) throw new TypeError('key is undefined');
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// Key can be hex string or buffer. 32 bytes for AES-256
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const keyBuffer = typeof key === 'string' ? Buffer.from(key, 'hex') : key;
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const iv = crypto.randomBytes(12); // 96-bit IV for GCM
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const cipher = crypto.createCipheriv('aes-256-gcm', keyBuffer, iv);
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// Use Buffer concatenation to handle both string and Buffer inputs correctly without encoding confusion
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const encryptedBuffer = Buffer.concat([
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cipher.update(plaintext),
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cipher.final()
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]);
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const tag = cipher.getAuthTag().toString('hex');
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return { content: encryptedBuffer.toString('hex'), iv: iv.toString('hex'), tag };
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});
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ipcMain.handle('decrypt-data', (event, ciphertext, key, iv, tag, options = {}) => {
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const keyBuffer = typeof key === 'string' ? Buffer.from(key, 'hex') : key;
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const ivBuffer = Buffer.from(iv, 'hex');
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const tagBuffer = Buffer.from(tag, 'hex');
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const decipher = crypto.createDecipheriv('aes-256-gcm', keyBuffer, ivBuffer);
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decipher.setAuthTag(tagBuffer);
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const outputEncoding = options.encoding || 'utf8';
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// If encoding is 'buffer', don't pass an encoding to update/final
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const updateEncoding = outputEncoding === 'buffer' ? undefined : outputEncoding;
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let decrypted;
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if (outputEncoding === 'buffer') {
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decrypted = Buffer.concat([
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decipher.update(ciphertext, 'hex'),
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decipher.final()
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]);
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} else {
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decrypted = decipher.update(ciphertext, 'hex', outputEncoding);
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decrypted += decipher.final(outputEncoding);
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}
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return decrypted;
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});
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});
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