Files
Electron.NET/src/ElectronNET.Host/main.js
2025-11-09 12:45:01 +01:00

441 lines
15 KiB
JavaScript

const { app } = require('electron');
const { BrowserWindow } = require('electron');
const { protocol } = require('electron');
const path = require('path');
const cProcess = require('child_process').spawn;
const portscanner = require('portscanner');
const { imageSize } = require('image-size');
const { HookService } = require('electron-host-hook');
let io, server, browserWindows, ipc, apiProcess, loadURL;
let appApi, menu, dialogApi, notification, tray, webContents;
let globalShortcut, shellApi, screen, clipboard, autoUpdater;
let commandLine, browserView;
let powerMonitor;
let processInfo;
let splashScreen, hostHook;
let nativeTheme;
let dock;
let launchFile;
let launchUrl;
let processApi;
let manifestJsonFileName = 'package.json';
let unpackedelectron = false;
let unpackeddotnet = false;
let dotnetpacked = false;
let electronforcedport;
if (app.commandLine.hasSwitch('manifest')) {
manifestJsonFileName = app.commandLine.getSwitchValue('manifest');
}
console.log('Entry!!!: ');
if (app.commandLine.hasSwitch('unpackedelectron')) {
unpackedelectron = true;
}
else if (app.commandLine.hasSwitch('unpackeddotnet')) {
unpackeddotnet = true;
}
else if (app.commandLine.hasSwitch('dotnetpacked')) {
dotnetpacked = true;
}
if (app.commandLine.hasSwitch('electronforcedport')) {
electronforcedport = app.commandLine.getSwitchValue('electronforcedport');
}
// Custom startup hook: look for custom_main.js and invoke its onStartup(host) if present.
// If the hook returns false, abort Electron startup.
try {
const fs = require('fs');
const customMainPath = path.join(__dirname, 'custom_main.js');
if (fs.existsSync(customMainPath)) {
const customMain = require(customMainPath);
if (customMain && typeof customMain.onStartup === 'function') {
const continueStartup = customMain.onStartup(globalThis);
if (continueStartup === false) {
////console.log('custom_main.js onStartup returned false. Exiting Electron host.');
// Ensure the app terminates immediately before further initialization.
// Use app.exit to allow Electron to perform its shutdown, fallback to process.exit.
try { app.exit(0); } catch (err) { process.exit(0); }
}
} else {
console.warn('custom_main.js found but no onStartup function exported.');
}
}
} catch (err) {
console.error('Error while executing custom_main.js:', err);
}
const currentPath = __dirname;
let currentBinPath = path.join(currentPath.replace('app.asar', ''), 'bin');
let manifestJsonFilePath = path.join(currentPath, manifestJsonFileName);
// if running unpackedelectron, lets change the path
if (unpackedelectron || unpackeddotnet) {
console.log('unpackedelectron! dir: ' + currentPath);
manifestJsonFilePath = path.join(currentPath, manifestJsonFileName);
currentBinPath = path.join(currentPath, '../'); // go to project directory
}
// handle macOS events for opening the app with a file, etc
app.on('will-finish-launching', () => {
app.on('open-file', (evt, file) => {
evt.preventDefault();
launchFile = file;
});
app.on('open-url', (evt, url) => {
evt.preventDefault();
launchUrl = url;
});
});
const manifestJsonFile = require(manifestJsonFilePath);
if (manifestJsonFile.singleInstance === "yes") {
const mainInstance = app.requestSingleInstanceLock();
app.on('second-instance', (events, args = []) => {
args.forEach((parameter) => {
const words = parameter.split('=');
if (words.length > 1) {
app.commandLine.appendSwitch(words[0].replace('--', ''), words[1]);
} else {
app.commandLine.appendSwitch(words[0].replace('--', ''));
}
});
const windows = BrowserWindow.getAllWindows();
if (windows.length) {
if (windows[0].isMinimized()) {
windows[0].restore();
}
windows[0].focus();
}
});
if (!mainInstance) {
app.quit();
}
}
// Collect user supplied command line args (excluding those handled by Electron host itself)
function getForwardedArgs() {
const skipSwitches = new Set(['unpackedelectron', 'unpackeddotnet', 'dotnetpacked']);
return process.argv.slice(2).filter(arg => {
if (!arg) return false;
// Node/Electron internal or we already process them
if (arg.startsWith('--manifest')) return false;
const cleaned = arg.replace(/^--/, '').replace(/^\//, '');
if (skipSwitches.has(cleaned)) return false;
if (cleaned.startsWith('inspect')) return false;
if (cleaned.startsWith('remote-debugging-port')) return false;
// We add /electronPort ourselves later
if (cleaned.startsWith('electronPort=')) return false;
if (cleaned.startsWith('electronWebPort=')) return false;
return true;
});
}
const forwardedArgs = getForwardedArgs();
app.on('ready', () => {
// Fix ERR_UNKNOWN_URL_SCHEME using file protocol
// https://github.com/electron/electron/issues/23757
////protocol.registerFileProtocol('file', (request, callback) => {
//// const pathname = request.url.replace('file:///', '');
//// callback(pathname);
////});
if (isSplashScreenEnabled()) {
startSplashScreen();
}
if (electronforcedport) {
console.log('Electron Socket IO (forced) Port: ' + electronforcedport);
startSocketApiBridge(electronforcedport);
return;
}
// Added default port as configurable for port restricted environments.
let defaultElectronPort = 8000;
if (manifestJsonFile.electronPort) {
defaultElectronPort = manifestJsonFile.electronPort;
}
// hostname needs to be localhost, otherwise Windows Firewall will be triggered.
portscanner.findAPortNotInUse(defaultElectronPort, 65535, 'localhost', function (error, port) {
console.log('Electron Socket IO Port: ' + port);
startSocketApiBridge(port);
});
});
app.on('quit', async (event, exitCode) => {
try {
server.close();
server.closeAllConnections();
} catch (e) {
console.error(e);
}
try {
apiProcess?.kill();
} catch (e) {
console.error(e);
}
try {
if (io && typeof io.close === 'function') {
io.close();
}
} catch (e) {
console.error(e);
}
});
function isSplashScreenEnabled() {
if (manifestJsonFile.hasOwnProperty('splashscreen')) {
if (manifestJsonFile.splashscreen.hasOwnProperty('imageFile')) {
return Boolean(manifestJsonFile.splashscreen.imageFile);
}
}
return false;
}
function startSplashScreen() {
const imageFile = path.join(currentPath, manifestJsonFile.splashscreen.imageFile);
const isHtml = imageFile.endsWith('.html') || imageFile.endsWith('.htm');
const startWindow = (width, height) => {
splashScreen = new BrowserWindow({
width: width,
height: height,
transparent: true,
center: true,
frame: false,
closable: false,
resizable: false,
skipTaskbar: true,
alwaysOnTop: true,
show: true,
});
splashScreen.setIgnoreMouseEvents(true);
app.once('browser-window-created', () => {
splashScreen.destroy();
});
const loadSplashscreenUrl = isHtml ? imageFile : path.join(currentPath, 'splashscreen', 'index.html') + '?imgPath=' + imageFile;
splashScreen.loadURL('file://' + loadSplashscreenUrl);
splashScreen.once('closed', () => {
splashScreen = null;
});
};
if (manifestJsonFile.splashscreen.width && manifestJsonFile.splashscreen.height) {
// width and height are set explicitly
return startWindow(manifestJsonFile.splashscreen.width, manifestJsonFile.splashscreen.height);
}
if (isHtml) {
// we cannot compute width and height => use default
return startWindow(800, 600);
}
// it's an image, so we can compute the desired splash screen size
imageSize(imageFile, (error, dimensions) => {
if (error) {
console.log(`load splashscreen error:`);
console.error(error);
throw new Error(error.message);
}
startWindow(dimensions.width, dimensions.height);
});
}
function startSocketApiBridge(port) {
// instead of 'require('socket.io')(port);' we need to use this workaround
// otherwise the Windows Firewall will be triggered
console.log('Electron Socket: starting...');
server = require('http').createServer();
const { Server } = require('socket.io');
io = new Server({
pingTimeout: 60000, // in ms, default is 5000
pingInterval: 10000, // in ms, default is 25000
});
io.attach(server);
server.listen(port, 'localhost');
server.on('listening', function () {
console.log('Electron Socket: listening on port %s at %s', server.address().port, server.address().address);
// Now that socket connection is established, we can guarantee port will not be open for portscanner
if (unpackedelectron) {
startAspCoreBackendUnpackaged(port);
} else if (!unpackeddotnet && !dotnetpacked) {
startAspCoreBackend(port);
}
});
// prototype
app['mainWindowURL'] = '';
app['mainWindow'] = null;
// @ts-ignore
io.on('connection', (socket) => {
console.log('Electron Socket: connected!');
socket.on('disconnect', function (reason) {
console.log('Got disconnect! Reason: ' + reason);
try {
////console.log('requireCache');
////console.log(require.cache['electron-host-hook']);
if (hostHook) {
const hostHookScriptFilePath = path.join(currentPath, 'ElectronHostHook', 'index.js');
delete require.cache[require.resolve(hostHookScriptFilePath)];
hostHook = undefined;
}
} catch (err) {
console.error(err.message);
}
});
if (global['electronsocket'] === undefined) {
global['electronsocket'] = socket;
global['electronsocket'].setMaxListeners(0);
}
console.log('Electron Socket: loading components...');
if (appApi === undefined) appApi = require('./api/app')(socket, app);
if (browserWindows === undefined) browserWindows = require('./api/browserWindows')(socket, app);
if (commandLine === undefined) commandLine = require('./api/commandLine')(socket, app);
if (autoUpdater === undefined) autoUpdater = require('./api/autoUpdater')(socket);
if (ipc === undefined) ipc = require('./api/ipc')(socket);
if (menu === undefined) menu = require('./api/menu')(socket);
if (dialogApi === undefined) dialogApi = require('./api/dialog')(socket);
if (notification === undefined) notification = require('./api/notification')(socket);
if (tray === undefined) tray = require('./api/tray')(socket);
if (webContents === undefined) webContents = require('./api/webContents')(socket);
if (globalShortcut === undefined) globalShortcut = require('./api/globalShortcut')(socket);
if (shellApi === undefined) shellApi = require('./api/shell')(socket);
if (screen === undefined) screen = require('./api/screen')(socket);
if (clipboard === undefined) clipboard = require('./api/clipboard')(socket);
if (browserView === undefined) browserView = require('./api/browserView').browserViewApi(socket);
if (powerMonitor === undefined) powerMonitor = require('./api/powerMonitor')(socket);
if (nativeTheme === undefined) nativeTheme = require('./api/nativeTheme')(socket);
if (dock === undefined) dock = require('./api/dock')(socket);
if (processInfo === undefined) processInfo = require('./api/process')(socket);
socket.on('register-app-open-file', (id) => {
global['electronsocket'] = socket;
app.on('open-file', (event, file) => {
event.preventDefault();
global['electronsocket'].emit('app-open-file' + id, file);
});
if (launchFile) {
global['electronsocket'].emit('app-open-file' + id, launchFile);
}
});
socket.on('register-app-open-url', (id) => {
global['electronsocket'] = socket;
app.on('open-url', (event, url) => {
event.preventDefault();
global['electronsocket'].emit('app-open-url' + id, url);
});
if (launchUrl) {
global['electronsocket'].emit('app-open-url' + id, launchUrl);
}
});
try {
if (hostHook === undefined) {
hostHook = new HookService(socket, app);
hostHook.onHostReady();
}
} catch (error) {
console.error(error.message);
}
console.log('Electron Socket: startup complete.');
});
}
function startAspCoreBackend(electronPort) {
startBackend();
function startBackend() {
loadURL = `about:blank`;
const envParam = getEnvironmentParameter();
const parameters = [
envParam,
`/electronPort=${electronPort}`,
`/electronPID=${process.pid}`,
// forward user supplied args (avoid duplicate environment)
...forwardedArgs.filter(a => !(envParam && a.startsWith('--environment=')))
].filter(p => p);
let binaryFile = manifestJsonFile.executable;
const os = require('os');
if (os.platform() === 'win32') {
binaryFile = binaryFile + '.exe';
}
let binFilePath = path.join(currentBinPath, binaryFile);
var options = { cwd: currentBinPath };
console.log('Starting backend with parameters:', parameters.join(' '));
apiProcess = cProcess(binFilePath, parameters, options);
apiProcess.stdout.on('data', (data) => {
console.log(`stdout: ${data.toString()}`);
});
}
}
function startAspCoreBackendUnpackaged(electronPort) {
startBackend();
function startBackend() {
loadURL = `about:blank`;
const envParam = getEnvironmentParameter();
const parameters = [
envParam,
`/electronPort=${electronPort}`,
`/electronPID=${process.pid}`,
...forwardedArgs.filter(a => !(envParam && a.startsWith('--environment=')))
].filter(p => p);
let binaryFile = manifestJsonFile.executable;
const os = require('os');
if (os.platform() === 'win32') {
binaryFile = binaryFile + '.exe';
}
let binFilePath = path.join(currentBinPath, binaryFile);
var options = { cwd: currentBinPath };
console.log('Starting backend (unpackaged) with parameters:', parameters.join(' '));
apiProcess = cProcess(binFilePath, parameters, options);
apiProcess.stdout.on('data', (data) => {
console.log(`stdout: ${data.toString()}`);
});
}
}
function getEnvironmentParameter() {
if (manifestJsonFile.environment) {
return '--environment=' + manifestJsonFile.environment;
}
return '';
}