refactor: implement clipboard APIs without the remote module (#17200)

lib/browser/rpc-server.js

@@ -4,8 +4,10 @@ const electron = require('electron')
 const { EventEmitter } = require('events')
 const fs = require('fs')
 const util = require('util')
+
 const v8Util = process.atomBinding('v8_util')
 const eventBinding = process.atomBinding('event')
+const clipboard = process.atomBinding('clipboard')
 
 const { isPromise } = electron
 
@@ -16,6 +18,7 @@ const objectsRegistry = require('@electron/internal/browser/objects-registry')
 const guestViewManager = require('@electron/internal/browser/guest-view-manager')
 const bufferUtils = require('@electron/internal/common/buffer-utils')
 const errorUtils = require('@electron/internal/common/error-utils')
+const clipboardUtils = require('@electron/internal/common/clipboard-utils')
 
 const hasProp = {}.hasOwnProperty
 
@@ -488,12 +491,24 @@ ipcMainUtils.handle('ELECTRON_BROWSER_GET_LAST_WEB_PREFERENCES', function (event
   return event.sender.getLastWebPreferences()
 })
 
-ipcMainUtils.handle('ELECTRON_BROWSER_CLIPBOARD_READ_FIND_TEXT', function (event) {
-  return electron.clipboard.readFindText()
-})
+// 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.handle('ELECTRON_BROWSER_CLIPBOARD_WRITE_FIND_TEXT', function (event, text) {
-  return electron.clipboard.writeFindText(text)
+ipcMainUtils.handle('ELECTRON_BROWSER_CLIPBOARD', function (event, method, ...args) {
+  if (!allowedClipboardMethods.has(method)) {
+    throw new Error(`Invalid method: ${method}`)
+  }
+
+  return clipboardUtils.serialize(electron.clipboard[method](...clipboardUtils.deserialize(args)))
 })
 
 const readFile = util.promisify(fs.readFile)