secure-handlebars-helpers

This handy client-side script registers the implementations of the contextual XSS escaping filters as handlebars' helpers, and is solely designed to be used with templates processed with the secure-handlebars package (e.g., <title>{{{yd title}}}</title> is one of the typical patterns of a processed template).

Quick Start

Client-side (browser)

Download the latest version at dist/secure-handlebars-helpers.min.js, and embed it after the handlebars script file.

<script type="text/javascript" src="dist/handlebars.js"></script>
<script type="text/javascript" src="dist/secure-handlebars-helpers.min.js"></script>

<script type="text/javascript">
var templateSpec = Handlebars.compile("<title>{{{yd title}}}</title>");
// html is assigned <title>&lt;script>alert('xss')&lt;/script></title>
var data = {title: "<script>alert('xss')</script>"};
var html = templateSpec(data);
</script>

Note: Read more about the underlying principle of contextual output filtering at xss-filters.

Contribute

To contribute, you can help make changes in src/ and tests/, followed by the following commands:

• $ npm run-script build to build the standalone JavaScript for client-side use
• $ npm test to run the tests

License

This software is free to use under the Yahoo BSD license. See the LICENSE file for license text and copyright information.