puppeteer-extra-plugin-stealth/evasions/navigator.permissions/index.js

Stealth mode: Applies various techniques to make detection of headless puppeteer harder.

'use strict'

const PuppeteerExtraPlugin = require('puppeteer-extra-plugin')

/**
 * Pass the Permissions Test.
 */
class Plugin extends PuppeteerExtraPlugin {
  constructor (opts = { }) { super(opts) }

  get name () { return 'stealth/evasions/navigator.permissions' }

  async onPageCreated (page) {
    await page.evaluateOnNewDocument(() => {
      const originalQuery = window.navigator.permissions.query
      // eslint-disable-next-line
      window.navigator.permissions.__proto__.query = parameters =>
        parameters.name === 'notifications'
          ? Promise.resolve({state: Notification.permission}) //eslint-disable-line
          : originalQuery(parameters)

      // Inspired by: https://github.com/ikarienator/phantomjs_hide_and_seek/blob/master/5.spoofFunctionBind.js
      const oldCall = Function.prototype.call
      function call () {
        return oldCall.apply(this, arguments)
      }
      // eslint-disable-next-line
      Function.prototype.call = call

      const nativeToStringFunctionString = Error.toString().replace(/Error/g, 'toString')
      const oldToString = Function.prototype.toString

      function functionToString () {
        if (this === window.navigator.permissions.query) {
          return 'function query() { [native code] }'
        }
        if (this === functionToString) {
          return nativeToStringFunctionString
        }
        return oldCall.call(oldToString, this)
      }
      // eslint-disable-next-line
      Function.prototype.toString = functionToString
    })
  }
}

module.exports = function (pluginConfig) { return new Plugin(pluginConfig) }