| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="utils.js"></script> |
| <title>Fenced frame content to report the value of location.ancestorOrigins</title> |
| |
| <body> |
| <script> |
| async function init() { // Needed in order to use top-level await. |
| // This file is meant to run in a <fencedframe>. It reports back to the |
| // outermost page the value of `location.ancestorOrigins` correct for: |
| // 1.) Top-level fenced frames |
| // 2.) Nested iframes inside a fenced frame |
| // 3.) Nested fenced frames |
| const url = new URL(location.href); |
| |
| const [location_ao_key, location_ao_ack_key, nested] = parseKeylist(); |
| |
| const is_nested_fenced_frame = nested == "nested"; |
| |
| // Report `location.ancestorOrigins`. |
| writeValueToServer(location_ao_key, Array.from(location.ancestorOrigins).join()); |
| |
| // If this page is a nested fenced frame, all we need to do is report the |
| // top-level value. |
| if (is_nested_fenced_frame) |
| return; |
| |
| // Wait for ACK, so we know that the outer page has read the last value from |
| // the `location_ao_key` stash and we can write to it again. |
| await nextValueFromServer(location_ao_ack_key); |
| |
| const nested_url = generateURL("location-ancestorOrigins-inner.https.html", |
| [location_ao_key, location_ao_ack_key, "nested"]); |
| |
| // Send `location.ancestorOrigins` from an iframe. |
| const iframe = document.createElement('iframe'); |
| iframe.src = nested_url; |
| const load_promise = new Promise((resolve, reject) => { |
| iframe.onload = resolve; |
| iframe.onerror = reject; |
| }); |
| document.body.append(iframe); |
| |
| // Wait for ACK, so we know that the outer page has read the ancestorOrigins |
| // from the iframe. |
| await nextValueFromServer(location_ao_ack_key); |
| |
| attachFencedFrame(nested_url); |
| } |
| |
| init(); |
| </script> |
| </body> |
