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import http from 'http'
import { join } from 'path'
import webdriver from 'next-webdriver'
import { createNext, FileRef } from 'e2e-utils'
import { NextInstance } from 'e2e-utils'
import { fetchViaHTTP, findPort, retry } from 'next-test-utils'
async function createHostServer() {
const server = http.createServer((req, res) => {
res.end(`
<html>
<head>
<title>testing cross-site</title>
</head>
<body></body>
</html>
`)
})
const port = await findPort()
await new Promise<void>((res) => {
server.listen(port, () => res())
})
return {
server,
port,
}
}
describe.each([['', '/docs']])(
'allowed-dev-origins, basePath: %p',
(basePath: string) => {
let next: NextInstance
describe('warn mode', () => {
beforeAll(async () => {
next = await createNext({
files: {
pages: new FileRef(join(__dirname, 'misc/pages')),
public: new FileRef(join(__dirname, 'misc/public')),
},
nextConfig: {
basePath,
},
})
await retry(async () => {
// make sure host server is running
const asset = await fetchViaHTTP(
next.appPort,
'/_next/static/chunks/pages/_app.js'
)
expect(asset.status).toBe(200)
})
})
afterAll(() => next.destroy())
it('should warn about WebSocket from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const websocketSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const ws = new WebSocket("${next.url}/_next/webpack-hmr")
ws.addEventListener('error', (err) => {
statusEl.innerText = 'error'
})
ws.addEventListener('open', () => {
statusEl.innerText = 'connected'
})
})()`
// ensure direct port with mismatching port is blocked
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
await browser.eval(websocketSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe(
'connected'
)
})
// ensure different host is blocked
await browser.get(`https://example.vercel.sh/`)
await browser.eval(websocketSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe(
'connected'
)
})
expect(next.cliOutput).toContain('Cross origin request detected from')
} finally {
server.close()
}
})
it('should warn about loading scripts from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const scriptSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const script = document.createElement('script')
script.src = "${next.url}/_next/static/chunks/pages/_app.js"
script.onerror = (err) => {
statusEl.innerText = 'error'
}
script.onload = () => {
statusEl.innerText = 'connected'
}
document.querySelector('body').appendChild(script)
})()`
// ensure direct port with mismatching port is blocked
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
await browser.eval(scriptSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe(
'connected'
)
})
// ensure different host is blocked
await browser.get(`https://example.vercel.sh/`)
await browser.eval(scriptSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe(
'connected'
)
})
expect(next.cliOutput).toContain('Cross origin request detected from')
} finally {
server.close()
}
})
it('should warn about loading internal middleware from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
const middlewareSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const xhr = new XMLHttpRequest()
xhr.open('GET', '${next.url}/__nextjs_error_feedback?errorCode=0&wasHelpful=true', true)
xhr.send()
xhr.onload = () => {
statusEl.innerText = "OK"
}
xhr.onerror = () => {
statusEl.innerText = "Unauthorized"
}
})()`
await browser.eval(middlewareSnippet)
await retry(async () => {
// TODO: These requests seem to be blocked regardless of our handling only when running with Turbopack
// Investigate why this is the case
if (!process.env.IS_TURBOPACK_TEST) {
expect(await browser.elementByCss('#status').text()).toBe('OK')
}
expect(next.cliOutput).toContain(
'Cross origin request detected from'
)
})
} finally {
server.close()
}
})
})
describe('block mode', () => {
beforeAll(async () => {
next = await createNext({
files: {
pages: new FileRef(join(__dirname, 'misc/pages')),
public: new FileRef(join(__dirname, 'misc/public')),
},
nextConfig: {
basePath,
allowedDevOrigins: ['localhost'],
},
})
await retry(async () => {
// make sure host server is running
const asset = await fetchViaHTTP(
next.appPort,
'/_next/static/chunks/pages/_app.js'
)
expect(asset.status).toBe(200)
})
})
afterAll(() => next.destroy())
it('should not allow dev WebSocket from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const websocketSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const ws = new WebSocket("${next.url}/_next/webpack-hmr")
ws.addEventListener('error', (err) => {
statusEl.innerText = 'error'
})
ws.addEventListener('open', () => {
statusEl.innerText = 'connected'
})
})()`
// ensure direct port with mismatching port is blocked
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
await browser.eval(websocketSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe('error')
})
// ensure different host is blocked
await browser.get(`https://example.vercel.sh/`)
await browser.eval(websocketSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe('error')
})
} finally {
server.close()
}
})
it('should not allow loading scripts from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const scriptSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const script = document.createElement('script')
script.src = "${next.url}/_next/static/chunks/pages/_app.js"
script.onerror = (err) => {
statusEl.innerText = 'error'
}
script.onload = () => {
statusEl.innerText = 'connected'
}
document.querySelector('body').appendChild(script)
})()`
// ensure direct port with mismatching port is blocked
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
await browser.eval(scriptSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe('error')
})
// ensure different host is blocked
await browser.get(`https://example.vercel.sh/`)
await browser.eval(scriptSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe('error')
})
} finally {
server.close()
}
})
it('should not allow loading internal middleware from cross-site', async () => {
const { server, port } = await createHostServer()
try {
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
const middlewareSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const xhr = new XMLHttpRequest()
xhr.open('GET', '${next.url}/__nextjs_error_feedback?errorCode=0&wasHelpful=true', true)
xhr.send()
xhr.onload = () => {
statusEl.innerText = "OK"
}
xhr.onerror = () => {
statusEl.innerText = "Unauthorized"
}
})()`
await browser.eval(middlewareSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe(
'Unauthorized'
)
})
} finally {
server.close()
}
})
it('should load images regardless of allowed origins', async () => {
const { server, port } = await createHostServer()
try {
const browser = await webdriver(`http://127.0.0.1:${port}`, '/about')
const imageSnippet = `(() => {
const statusEl = document.createElement('p')
statusEl.id = 'status'
document.querySelector('body').appendChild(statusEl)
const image = document.createElement('img')
image.src = "${next.url}/_next/image?url=%2Fimage.png&w=256&q=75"
document.querySelector('body').appendChild(image)
image.onload = () => {
statusEl.innerText = 'OK'
}
image.onerror = () => {
statusEl.innerText = 'Unauthorized'
}
})()`
await browser.eval(imageSnippet)
await retry(async () => {
expect(await browser.elementByCss('#status').text()).toBe('OK')
})
} finally {
server.close()
}
})
})
}
)
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