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fix csp issue for mts realm #1998

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Merged
PupilTong merged 1 commit into from
Dec 15, 2025
Merged

fix csp issue for mts realm #1998

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5 changes: 5 additions & 0 deletions .changeset/thin-streets-rule.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@lynx-js/web-core": patch
---

fix csp issue for mts realm
8 changes: 5 additions & 3 deletions packages/web-platform/web-core/src/uiThread/createRenderAllOnUI.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,8 @@ import type { StartUIThreadCallbacks } from './startUIThread.js';
const existingScript = document.querySelector('script[nonce]') as
| HTMLScriptElement
| null;
const nonce = existingScript?.nonce || existingScript?.getAttribute('nonce');
const nonce = existingScript?.nonce || existingScript?.getAttribute('nonce')
|| '';

const {
prepareMainThreadAPIs,
Expand Down Expand Up @@ -57,7 +58,7 @@ async function createIFrameRealm(parent: Node): Promise<JSRealm> {
});
iframe.style.display = 'none';
iframe.srcdoc =
'<!DOCTYPE html><html><head><script>parent.postMessage("lynx:mtsready","*")</script></head><body style="display:none"></body></html>';
`<!DOCTYPE html><html><head><script nonce="${nonce}">parent.postMessage("lynx:mtsready","*")</script></head><body style="display:none"></body></html>`;
iframe.sandbox = 'allow-same-origin allow-scripts'; // Restrict capabilities for security
iframe.loading = 'eager';
parent.appendChild(iframe);
Expand All @@ -68,7 +69,7 @@ async function createIFrameRealm(parent: Node): Promise<JSRealm> {
script.fetchPriority = 'high';
script.defer = true;
script.async = false;
script.nonce = nonce || '';
script.nonce = nonce;
iframe.contentDocument!.head.appendChild(script);
return new Promise(async (resolve, reject) => {
script.onload = () => {
Expand All @@ -90,6 +91,7 @@ async function createIFrameRealm(parent: Node): Promise<JSRealm> {
xhr.send(null);
if (xhr.status === 200) {
const script = iframe.contentDocument!.createElement('script');
script.nonce = nonce;
script.textContent = xhr.responseText;
// @ts-expect-error
iframeWindow.module = { exports: undefined };
Expand Down
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