electron/lib/browser/rpc-server.ts

109 lines
3.7 KiB
TypeScript

import { app } from 'electron/main';
import type { WebContents } from 'electron/main';
import { clipboard, nativeImage } from 'electron/common';
import * as fs from 'fs';
import { ipcMainInternal } from '@electron/internal/browser/ipc-main-internal';
import * as ipcMainUtils from '@electron/internal/browser/ipc-main-internal-utils';
import * as typeUtils from '@electron/internal/common/type-utils';
import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
const eventBinding = process._linkedBinding('electron_browser_event');
const emitCustomEvent = function (contents: WebContents, eventName: string, ...args: any[]) {
const event = eventBinding.createWithSender(contents);
app.emit(eventName, event, contents, ...args);
contents.emit(eventName, event, ...args);
return event;
};
const logStack = function (contents: WebContents, code: string, stack: string) {
if (stack) {
console.warn(`WebContents (${contents.id}): ${code}`, stack);
}
};
// Implements window.close()
ipcMainInternal.on(IPC_MESSAGES.BROWSER_WINDOW_CLOSE, function (event) {
const window = event.sender.getOwnerBrowserWindow();
if (window) {
window.close();
}
event.returnValue = null;
});
ipcMainInternal.handle(IPC_MESSAGES.BROWSER_GET_LAST_WEB_PREFERENCES, function (event) {
return event.sender.getLastWebPreferences();
});
// Methods not listed in this set are called directly in the renderer process.
const allowedClipboardMethods = (() => {
switch (process.platform) {
case 'darwin':
return new Set(['readFindText', 'writeFindText']);
case 'linux':
return new Set(Object.keys(clipboard));
default:
return new Set();
}
})();
ipcMainUtils.handleSync(IPC_MESSAGES.BROWSER_CLIPBOARD_SYNC, function (event, method: string, ...args: any[]) {
if (!allowedClipboardMethods.has(method)) {
throw new Error(`Invalid method: ${method}`);
}
return typeUtils.serialize((clipboard as any)[method](...typeUtils.deserialize(args)));
});
if (BUILDFLAG(ENABLE_DESKTOP_CAPTURER)) {
const desktopCapturer = require('@electron/internal/browser/desktop-capturer');
ipcMainInternal.handle(IPC_MESSAGES.DESKTOP_CAPTURER_GET_SOURCES, async function (event, options: Electron.SourcesOptions, stack: string) {
logStack(event.sender, 'desktopCapturer.getSources()', stack);
const customEvent = emitCustomEvent(event.sender, 'desktop-capturer-get-sources');
if (customEvent.defaultPrevented) {
console.error('Blocked desktopCapturer.getSources()');
return [];
}
return typeUtils.serialize(await desktopCapturer.getSourcesImpl(event, options));
});
}
const getPreloadScript = async function (preloadPath: string) {
let preloadSrc = null;
let preloadError = null;
try {
preloadSrc = (await fs.promises.readFile(preloadPath)).toString();
} catch (error) {
preloadError = error;
}
return { preloadPath, preloadSrc, preloadError };
};
ipcMainUtils.handleSync(IPC_MESSAGES.BROWSER_SANDBOX_LOAD, async function (event) {
const preloadPaths = event.sender._getPreloadPaths();
return {
preloadScripts: await Promise.all(preloadPaths.map(path => getPreloadScript(path))),
process: {
arch: process.arch,
platform: process.platform,
env: { ...process.env },
version: process.version,
versions: process.versions,
execPath: process.helperExecPath
}
};
});
ipcMainInternal.on(IPC_MESSAGES.BROWSER_PRELOAD_ERROR, function (event, preloadPath: string, error: Error) {
event.sender.emit('preload-error', event, preloadPath, error);
});
ipcMainInternal.handle(IPC_MESSAGES.NATIVE_IMAGE_CREATE_THUMBNAIL_FROM_PATH, async (_, path: string, size: Electron.Size) => {
return typeUtils.serialize(await nativeImage.createThumbnailFromPath(path, size));
});