index.test.js•3.05 kB
const test = require('ava')
const {
getVanillaFingerPrint,
getStealthFingerPrint
} = require('../../test/util')
const { vanillaPuppeteer, addExtra } = require('../../test/util')
const Plugin = require('.')
// TODO: Vanilla seems fine, evasion obsolete?
// Note: We keep it around for now, as we will need this method in a fingerprinting plugin later anyway
test('vanilla: is array with en-US', async t => {
const { languages } = await getVanillaFingerPrint()
t.is(Array.isArray(languages), true)
t.is(languages[0], 'en-US')
})
test('vanilla: will not have modifications', async t => {
const browser = await vanillaPuppeteer.launch({ headless: true })
const page = await browser.newPage()
const test1 = await page.evaluate(
() => Object.getOwnPropertyDescriptor(navigator, 'languages') // Must be undefined if native
)
t.is(test1, undefined)
const test2 = await page.evaluate(
() => Object.getOwnPropertyNames(navigator) // Must be an empty array if native
)
t.false(test2.includes('languages'))
})
test('stealth: is array with en-US', async t => {
const { languages } = await getStealthFingerPrint(Plugin)
t.is(Array.isArray(languages), true)
t.is(languages[0], 'en-US')
})
test('stealth: customized value', async t => {
const { languages } = await getStealthFingerPrint(Plugin, null, {
languages: ['foo', 'bar']
})
t.deepEqual(languages, ['foo', 'bar'])
})
test('stealth: will not leak modifications', async t => {
const puppeteer = addExtra(vanillaPuppeteer).use(Plugin())
const browser = await puppeteer.launch({ headless: true })
const page = await browser.newPage()
const test1 = await page.evaluate(
() => Object.getOwnPropertyDescriptor(navigator, 'languages') // Must be undefined if native
)
t.is(test1, undefined)
const test2 = await page.evaluate(
() => Object.getOwnPropertyNames(navigator) // Must be an empty array if native
)
t.false(test2.includes('languages'))
})
test('stealth: does patch getters properly', async t => {
const puppeteer = addExtra(vanillaPuppeteer).use(Plugin())
const browser = await puppeteer.launch({ headless: true })
const page = await browser.newPage()
const results = await page.evaluate(() => {
const hasInvocationError = (() => {
try {
// eslint-disable-next-line dot-notation
Object['seal'](Object.getPrototypeOf(navigator)['languages'])
return false
} catch (err) {
return true
}
})()
const hasPushError = (() => {
try {
// eslint-disable-next-line dot-notation
navigator.languages.push(null)
return false
} catch (err) {
return true
}
})()
return {
hasInvocationError,
hasPushError,
toString: Object.getOwnPropertyDescriptor(
Object.getPrototypeOf(navigator),
'languages'
).get.toString()
}
})
t.deepEqual(results, {
hasInvocationError: true,
hasPushError: true,
toString: 'function get languages() { [native code] }'
})
})