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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function() {
'use strict';
/** @return {!URL} */
function getRedirectUrl() {
try { // For potential TypeError from new URL().
const urlString = new URL(location).searchParams.get('url');
if (urlString) {
const url = new URL(decodeURIComponent(urlString));
// Perform basic filtering. Also skip 'dev-ui-loader' to avoid redirect
// cycle (benign but bizarre). Note that |url.host| is always lowercase.
if (url.protocol === 'chrome:' && url.host.match(/[a-z0-9_\-]+/) &&
url.host !== 'dev-ui-loader') {
return url;
}
}
} catch (e) {
}
return new URL('chrome://chrome-urls');
}
function redirectToChromePage() {
// Use replace() so the current page disappears from history.
location.replace(getRedirectUrl());
}
function doInstall() {
cr.sendWithPromise('installAndLoadDevUiDfm').then((response) => {
const status = response[0];
if (status === 'success' || status === 'noop') {
redirectToChromePage();
} else if (status === 'failure') {
document.querySelector('#failure-message').hidden = false;
}
});
}
document.addEventListener('DOMContentLoaded', () => {
cr.sendWithPromise('getDevUiDfmState').then((state) => {
if (state === 'ready') {
redirectToChromePage();
} else if (state === 'not-installed' || 'not-loaded') {
doInstall();
}
});
});
})();
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