| 1 | import assert from "node:assert/strict"; |
| 2 | import { test } from "node:test"; |
| 3 | |
| 4 | import { makeNonce, pagePolicy, withSiteHeaders } from "./page-headers.ts"; |
| 5 | |
| 6 | test("a page runs only its own scripts and is never framed", () => { |
| 7 | const nonce = makeNonce(); |
| 8 | assert.match(nonce, /^[A-Za-z0-9+/]{22}==$/); |
| 9 | assert.notEqual(nonce, makeNonce()); |
| 10 | const policy = pagePolicy(nonce); |
| 11 | assert.ok(policy.includes(`script-src 'self' 'nonce-${nonce}'`)); |
| 12 | assert.doesNotMatch(policy, /script-src[^;]*'unsafe-inline'/); |
| 13 | assert.match(policy, /frame-ancestors 'none'/); |
| 14 | assert.match(policy, /object-src 'none'/); |
| 15 | assert.match(policy, /base-uri 'self'/); |
| 16 | // Pictures in a README come from anywhere on HTTPS. |
| 17 | assert.match(policy, /img-src 'self' https: data: blob:;/); |
| 18 | // An installation serving its files over plain HTTP names that origin. |
| 19 | assert.match(pagePolicy(nonce, "http://files.local:8787"), /img-src 'self' https: data: blob: http:\/\/files\.local:8787;/); |
| 20 | assert.match(pagePolicy(nonce, "https://g1tusercontent.com"), /img-src 'self' https: data: blob:;/); |
| 21 | }); |
| 22 | |
| 23 | test("every answer gains nosniff and a referrer policy; pages are not framed", () => { |
| 24 | const page = withSiteHeaders(new Response("<p>hi</p>", { headers: { "content-type": "text/html" } })); |
| 25 | assert.equal(page.headers.get("x-content-type-options"), "nosniff"); |
| 26 | assert.equal(page.headers.get("referrer-policy"), "strict-origin-when-cross-origin"); |
| 27 | assert.equal(page.headers.get("x-frame-options"), "DENY"); |
| 28 | |
| 29 | const data = withSiteHeaders(new Response("{}", { headers: { "content-type": "application/json" } })); |
| 30 | assert.equal(data.headers.get("x-content-type-options"), "nosniff"); |
| 31 | assert.equal(data.headers.get("x-frame-options"), null); |
| 32 | |
| 33 | // A redirect's headers are fixed; the answer is copied, status and all. |
| 34 | const moved = withSiteHeaders(Response.redirect("https://docs.g1t.sh/", 301)); |
| 35 | assert.equal(moved.status, 301); |
| 36 | assert.equal(moved.headers.get("location"), "https://docs.g1t.sh/"); |
| 37 | assert.equal(moved.headers.get("referrer-policy"), "strict-origin-when-cross-origin"); |
| 38 | |
| 39 | const own = withSiteHeaders(new Response("", { headers: { "referrer-policy": "no-referrer" } })); |
| 40 | assert.equal(own.headers.get("referrer-policy"), "no-referrer"); |
| 41 | }); |