<!
DOCTYPE html>
<
html>
<
head>
<
meta http-equiv=
"Content-Security-Policy" content=
"img-src https://*;">
<
script>
async function timeout (cmd) {
const timer = new Promise((resolve, reject) => {
const id = setTimeout(() => {
clearTimeout(id)
reject(new Error(
'Promise timed out!'))
},
750)
})
return Promise.race([cmd, timer])
}
let ourOpener = window.opener;
if (location.search.includes(
"close")) {
window.close();
}
document.addEventListener(
'DOMContentLoaded', async () => {
const
frame = document.createElementNS(
'http://www.w3.org/1999/xhtml',
'frame');
const image = document.createElementNS(
'http://www.w3.org/2000/svg',
'image');
document.documentElement.appendChild(
frame)
image.setAttribute(
'href',
'a.png')
for (let i =
0; i <
5; ++i) {
try { await timeout(image.decode()) } catch (e) {}
}
let w = window.open();
// Need to run SpecialPowers in the newly opened window to avoid
// .wrap throwing because of dead objects.
let csp = w.eval(
"SpecialPowers.wrap(document).cspJSON;");
ourOpener.postMessage(csp,
"*");
w.close();
if (!location.search.includes(
"close")) {
window.close();
}
})
</
script>
</
head>
</
html>
