96 lines
3.8 KiB
TypeScript
96 lines
3.8 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import * as t from '@angular/core/testing/testing_internal';
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import {browserDetection} from '@angular/platform-browser/testing/browser_util';
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import {getDOM} from '../../src/dom/dom_adapter';
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import {sanitizeHtml} from '../../src/security/html_sanitizer';
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export function main() {
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t.describe('HTML sanitizer', () => {
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let originalLog: (msg: any) => any = null;
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let logMsgs: string[];
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t.beforeEach(() => {
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logMsgs = [];
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originalLog = getDOM().log; // Monkey patch DOM.log.
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getDOM().log = (msg) => logMsgs.push(msg);
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});
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t.afterEach(() => { getDOM().log = originalLog; });
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t.it('serializes nested structures', () => {
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t.expect(sanitizeHtml('<div alt="x"><p>a</p>b<b>c<a alt="more">d</a></b>e</div>'))
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.toEqual('<div alt="x"><p>a</p>b<b>c<a alt="more">d</a></b>e</div>');
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t.expect(logMsgs).toEqual([]);
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});
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t.it('serializes self closing elements', () => {
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t.expect(sanitizeHtml('<p>Hello <br> World</p>')).toEqual('<p>Hello <br> World</p>');
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});
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t.it('supports namespaced elements', () => {
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t.expect(sanitizeHtml('a<my:hr/><my:div>b</my:div>c')).toEqual('abc');
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});
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t.it('supports namespaced attributes', () => {
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t.expect(sanitizeHtml('<a xlink:href="something">t</a>'))
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.toEqual('<a xlink:href="something">t</a>');
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t.expect(sanitizeHtml('<a xlink:evil="something">t</a>')).toEqual('<a>t</a>');
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t.expect(sanitizeHtml('<a xlink:href="javascript:foo()">t</a>'))
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.toEqual('<a xlink:href="unsafe:javascript:foo()">t</a>');
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});
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t.it('supports sanitizing plain text', () => {
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t.expect(sanitizeHtml('Hello, World')).toEqual('Hello, World');
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});
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t.it('ignores non-element, non-attribute nodes', () => {
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t.expect(sanitizeHtml('<!-- comments? -->no.')).toEqual('no.');
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t.expect(sanitizeHtml('<?pi nodes?>no.')).toEqual('no.');
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t.expect(logMsgs.join('\n')).toMatch(/sanitizing HTML stripped some content/);
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});
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t.it('supports sanitizing escaped entities', () => {
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t.expect(sanitizeHtml('🚀')).toEqual('🚀');
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t.expect(logMsgs).toEqual([]);
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});
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t.it('escapes entities', () => {
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t.expect(sanitizeHtml('<p>Hello < World</p>')).toEqual('<p>Hello < World</p>');
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t.expect(sanitizeHtml('<p>Hello < World</p>')).toEqual('<p>Hello < World</p>');
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t.expect(sanitizeHtml('<p alt="% & " !">Hello</p>'))
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.toEqual('<p alt="% & " !">Hello</p>'); // NB: quote encoded as ASCII ".
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});
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t.describe('should strip dangerous elements', () => {
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let dangerousTags = [
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'frameset', 'form', 'param', 'object', 'embed', 'textarea', 'input', 'button', 'option',
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'select', 'script', 'style', 'link', 'base', 'basefont'
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];
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for (let tag of dangerousTags) {
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t.it(
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`${tag}`, () => { t.expect(sanitizeHtml(`<${tag}>evil!</${tag}>`)).toEqual('evil!'); });
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}
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t.it(`swallows frame entirely`, () => {
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t.expect(sanitizeHtml(`<frame>evil!</frame>`)).not.toContain('<frame>');
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});
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});
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t.describe('should strip dangerous attributes', () => {
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let dangerousAttrs = ['id', 'name', 'style'];
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for (let attr of dangerousAttrs) {
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t.it(`${attr}`, () => {
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t.expect(sanitizeHtml(`<a ${attr}="x">evil!</a>`)).toEqual('<a>evil!</a>');
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});
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}
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});
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if (browserDetection.isWebkit) {
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t.it('should prevent mXSS attacks', function() {
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t.expect(sanitizeHtml('<a href="　javascript:alert(1)">CLICKME</a>'))
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.toEqual('<a href="unsafe:javascript:alert(1)">CLICKME</a>');
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});
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}
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});
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}
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