65 lines
1.9 KiB
TypeScript
65 lines
1.9 KiB
TypeScript
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { MessagePoster } from './messaging';
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import { getSettings } from './settings';
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import { getStrings } from './strings';
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/**
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* Shows an alert when there is a content security policy violation.
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*/
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export class CspAlerter {
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private didShow = false;
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private didHaveCspWarning = false;
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private messaging?: MessagePoster;
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constructor() {
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document.addEventListener('securitypolicyviolation', () => {
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this.onCspWarning();
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});
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window.addEventListener('message', (event) => {
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if (event && event.data && event.data.name === 'vscode-did-block-svg') {
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this.onCspWarning();
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}
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});
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}
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public setPoster(poster: MessagePoster) {
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this.messaging = poster;
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if (this.didHaveCspWarning) {
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this.showCspWarning();
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}
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}
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private onCspWarning() {
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this.didHaveCspWarning = true;
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this.showCspWarning();
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}
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private showCspWarning() {
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const strings = getStrings();
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const settings = getSettings();
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if (this.didShow || settings.disableSecurityWarnings || !this.messaging) {
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return;
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}
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this.didShow = true;
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const notification = document.createElement('a');
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notification.innerText = strings.cspAlertMessageText;
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notification.setAttribute('id', 'code-csp-warning');
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notification.setAttribute('title', strings.cspAlertMessageTitle);
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notification.setAttribute('role', 'button');
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notification.setAttribute('aria-label', strings.cspAlertMessageLabel);
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notification.onclick = () => {
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this.messaging!.postMessage('showPreviewSecuritySelector', { source: settings.source });
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};
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document.body.appendChild(notification);
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}
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}
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