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ZAP Error Fixes - Define CSP #543

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14 changes: 12 additions & 2 deletions __tests__/pages/_document.test.js
Original file line number Diff line number Diff line change
@@ -1,9 +1,19 @@
import '@testing-library/jest-dom'
import MyDocument from '../../pages/_document'

//mocks
jest.mock('../../lib/Utils', () => ({
generateNonce: jest.fn().mockReturnValue('test'),
}))

describe('_document', () => {
it('returns initialProps', async () => {
const props = { html: 'html', head: 'head', styles: 'styles' }
const props = {
html: 'html',
head: 'head',
styles: 'styles',
nonce: 'test',
}
const result = await MyDocument.getInitialProps({
defaultGetInitialProps: async (docCtx, options = {}) => {
return props
Expand All @@ -13,7 +23,7 @@ describe('_document', () => {
})

it('renders', () => {
const sut = new MyDocument()
const sut = new MyDocument({ nonce: 'test' })
const result = sut.render()
expect(result).toBeTruthy()
})
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6 changes: 6 additions & 0 deletions lib/Utils.js
Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
import crypto from 'crypto'

export function formatDate(value, locale) {
const options = { year: 'numeric', month: 'long', day: 'numeric' }
let date
Expand Down Expand Up @@ -39,3 +41,7 @@ export function getGreeting(time) {
return 'greeting'
}
}

export function generateNonce() {
return crypto.randomBytes(16).toString('base64')
}
4 changes: 0 additions & 4 deletions next.config.js
Original file line number Diff line number Diff line change
Expand Up @@ -31,10 +31,6 @@ const securityHeaders = [
key: 'Referrer-Policy',
value: 'same-origin',
},
{
key: 'Content-Security-Policy',
value: `frame-ancestors 'self'`,
},
{
key: 'X-Frame-Options',
value: 'SAMEORIGIN',
Expand Down
33 changes: 30 additions & 3 deletions pages/_document.js
Original file line number Diff line number Diff line change
@@ -1,27 +1,54 @@
import Document, { Html, Head, Main, NextScript } from 'next/document'
import { generateNonce } from '../lib/Utils'
import Script from 'next/script'

class MyDocument extends Document {
static async getInitialProps(ctx) {
const nonce = generateNonce()
const initialProps = await Document.getInitialProps(ctx)
return { ...initialProps }
//set csp
let csp = ``
csp += `base-uri 'self';`
csp += `form-action 'self';`
csp += `default-src 'self';`
csp += `script-src 'self' 'nonce-${nonce}' 'unsafe-eval';`
csp += `style-src 'self' https://fonts.googleapis.com 'unsafe-inline';`
csp += `img-src 'self' data: blob:;`
csp += `font-src 'self' https://fonts.gstatic.com data:;`
csp += `frame-ancestors 'self';`

if (ctx.res) {
ctx.res.setHeader('Content-Security-Policy', csp)
}

return { ...initialProps, nonce }
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}

render() {
const { nonce } = this.props
return (
<Html className="no-js" dir="ltr" xmlns="http://www.w3.org/1999/xhtml">
<Head prefix="og:http://ogp.me/ns#"></Head>
<Head nonce={nonce} prefix="og:http://ogp.me/ns#"></Head>
<body>
<Main />
<NextScript />
<NextScript nonce={nonce} />
<script
async
src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"
nonce={nonce}
dangerouslySetInnerHTML={{
__html: `window.__webpack_nonce__ = "${nonce}"`,
}}
></script>
{process.env.NEXT_PUBLIC_ADOBE_ANALYTICS_URL ? (
<Script
id="1"
strategy="beforeInteractive"
src={process.env.NEXT_PUBLIC_ADOBE_ANALYTICS_URL}
nonce={nonce}
dangerouslySetInnerHTML={{
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__html: `window.__webpack_nonce__ = "${nonce}"`,
}}
/>
) : null}
</body>
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