angular-cn/packages/core/test/sanitization/sanitization_spec.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {SECURITY_SCHEMA} from '@angular/compiler/src/schema/dom_security_schema';
import {LView} from '@angular/core/src/render3/interfaces/view';
import {enterView, leaveView} from '@angular/core/src/render3/state';
import {bypassSanitizationTrustHtml, bypassSanitizationTrustResourceUrl, bypassSanitizationTrustScript, bypassSanitizationTrustStyle, bypassSanitizationTrustUrl} from '../../src/sanitization/bypass';
import {getUrlSanitizer, ɵɵsanitizeHtml, ɵɵsanitizeResourceUrl, ɵɵsanitizeScript, ɵɵsanitizeStyle, ɵɵsanitizeUrl, ɵɵsanitizeUrlOrResourceUrl} from '../../src/sanitization/sanitization';
import {SecurityContext} from '../../src/sanitization/security';
function fakeLView(): LView {
return [null, {}] as LView;
}
describe('sanitization', () => {
beforeEach(() => enterView(fakeLView(), null));
afterEach(() => leaveView());
class Wrap {
constructor(private value: string) {}
toString() { return this.value; }
}
it('should sanitize html', () => {
expect(ɵɵsanitizeHtml('<div></div>')).toEqual('<div></div>');
expect(ɵɵsanitizeHtml(new Wrap('<div></div>'))).toEqual('<div></div>');
expect(ɵɵsanitizeHtml('<img src="javascript:true">'))
.toEqual('<img src="unsafe:javascript:true">');
expect(ɵɵsanitizeHtml(new Wrap('<img src="javascript:true">')))
.toEqual('<img src="unsafe:javascript:true">');
expect(() => ɵɵsanitizeHtml(bypassSanitizationTrustUrl('<img src="javascript:true">')))
.toThrowError(/Required a safe HTML, got a URL/);
expect(ɵɵsanitizeHtml(bypassSanitizationTrustHtml('<img src="javascript:true">')))
.toEqual('<img src="javascript:true">');
});
it('should sanitize url', () => {
expect(ɵɵsanitizeUrl('http://server')).toEqual('http://server');
expect(ɵɵsanitizeUrl(new Wrap('http://server'))).toEqual('http://server');
expect(ɵɵsanitizeUrl('javascript:true')).toEqual('unsafe:javascript:true');
expect(ɵɵsanitizeUrl(new Wrap('javascript:true'))).toEqual('unsafe:javascript:true');
expect(() => ɵɵsanitizeUrl(bypassSanitizationTrustHtml('javascript:true')))
.toThrowError(/Required a safe URL, got a HTML/);
expect(ɵɵsanitizeUrl(bypassSanitizationTrustUrl('javascript:true'))).toEqual('javascript:true');
});
it('should sanitize resourceUrl', () => {
const ERROR = 'unsafe value used in a resource URL context (see http://g.co/ng/security#xss)';
expect(() => ɵɵsanitizeResourceUrl('http://server')).toThrowError(ERROR);
expect(() => ɵɵsanitizeResourceUrl('javascript:true')).toThrowError(ERROR);
expect(() => ɵɵsanitizeResourceUrl(bypassSanitizationTrustHtml('javascript:true')))
.toThrowError(/Required a safe ResourceURL, got a HTML/);
expect(ɵɵsanitizeResourceUrl(bypassSanitizationTrustResourceUrl('javascript:true')))
.toEqual('javascript:true');
});
it('should sanitize style', () => {
expect(ɵɵsanitizeStyle('red')).toEqual('red');
expect(ɵɵsanitizeStyle(new Wrap('red'))).toEqual('red');
expect(ɵɵsanitizeStyle('url("http://server")')).toEqual('unsafe');
expect(ɵɵsanitizeStyle(new Wrap('url("http://server")'))).toEqual('unsafe');
expect(() => ɵɵsanitizeStyle(bypassSanitizationTrustHtml('url("http://server")')))
.toThrowError(/Required a safe Style, got a HTML/);
expect(ɵɵsanitizeStyle(bypassSanitizationTrustStyle('url("http://server")')))
.toEqual('url("http://server")');
});
it('should sanitize script', () => {
const ERROR = 'unsafe value used in a script context';
expect(() => ɵɵsanitizeScript('true')).toThrowError(ERROR);
expect(() => ɵɵsanitizeScript('true')).toThrowError(ERROR);
expect(() => ɵɵsanitizeScript(bypassSanitizationTrustHtml('true')))
.toThrowError(/Required a safe Script, got a HTML/);
expect(ɵɵsanitizeScript(bypassSanitizationTrustScript('true'))).toEqual('true');
});
it('should select correct sanitizer for URL props', () => {
// making sure security schema we have on compiler side is in sync with the `getUrlSanitizer`
// runtime function definition
const schema = SECURITY_SCHEMA();
const contextsByProp: Map<string, Set<number>> = new Map();
const sanitizerNameByContext: Map<number, Function> = new Map([
[SecurityContext.URL, ɵɵsanitizeUrl], [SecurityContext.RESOURCE_URL, ɵɵsanitizeResourceUrl]
]);
Object.keys(schema).forEach(key => {
const context = schema[key];
if (context === SecurityContext.URL || SecurityContext.RESOURCE_URL) {
const [tag, prop] = key.split('|');
const contexts = contextsByProp.get(prop) || new Set<number>();
contexts.add(context);
contextsByProp.set(prop, contexts);
// check only in case a prop can be a part of both URL contexts
if (contexts.size === 2) {
expect(getUrlSanitizer(tag, prop)).toEqual(sanitizerNameByContext.get(context) !);
}
}
});
});
it('should sanitize resourceUrls via sanitizeUrlOrResourceUrl', () => {
const ERROR = 'unsafe value used in a resource URL context (see http://g.co/ng/security#xss)';
expect(() => ɵɵsanitizeUrlOrResourceUrl('http://server', 'iframe', 'src')).toThrowError(ERROR);
expect(() => ɵɵsanitizeUrlOrResourceUrl('javascript:true', 'iframe', 'src'))
.toThrowError(ERROR);
expect(
() => ɵɵsanitizeUrlOrResourceUrl(
bypassSanitizationTrustHtml('javascript:true'), 'iframe', 'src'))
.toThrowError(/Required a safe ResourceURL, got a HTML/);
expect(ɵɵsanitizeUrlOrResourceUrl(
bypassSanitizationTrustResourceUrl('javascript:true'), 'iframe', 'src'))
.toEqual('javascript:true');
});
it('should sanitize urls via sanitizeUrlOrResourceUrl', () => {
expect(ɵɵsanitizeUrlOrResourceUrl('http://server', 'a', 'href')).toEqual('http://server');
expect(ɵɵsanitizeUrlOrResourceUrl(new Wrap('http://server'), 'a', 'href'))
.toEqual('http://server');
expect(ɵɵsanitizeUrlOrResourceUrl('javascript:true', 'a', 'href'))
.toEqual('unsafe:javascript:true');
expect(ɵɵsanitizeUrlOrResourceUrl(new Wrap('javascript:true'), 'a', 'href'))
.toEqual('unsafe:javascript:true');
expect(
() =>
ɵɵsanitizeUrlOrResourceUrl(bypassSanitizationTrustHtml('javascript:true'), 'a', 'href'))
.toThrowError(/Required a safe URL, got a HTML/);
expect(ɵɵsanitizeUrlOrResourceUrl(bypassSanitizationTrustUrl('javascript:true'), 'a', 'href'))
.toEqual('javascript:true');
});
});