Adds rel="noopener" to external links in Sitecore.
When linking to external websites into a new window or tab, the window.opener references the source site, making this a security risk. More info and example of this problem can be found here and here.
The module is a code example of how to solve this in Sitecore. It adds the rel="noopener" tag when rendering external link fields of the Sitecore types "Generic Link" and "Generic Link with Search". It also adds the rel="noopener" to external links withing rich text fields at save time.
To support older browsers, you may set Stendahls.Sc.RelNoOpener.AddNoReferrer to true. The module will then render rel="noopener noreferrer" on such links. If you're using Sitecore 8.2u5 or later, Sitecore has built-in support for adding these rel attributes. However, some people have found problem with Sitecores implementation. If you use this module, it will disable Sitecores implementation by setting ProtectExternalLinksWithBlankTarget to false.
Build the solution and copy the .dll and .config files into your solution. Alternatively, you may just grab the pre-made Sitecore package and install it.
This code is pretty generic and will probably work on most versions of Sitecore, though it's not very well tested. You might need to change the version reference to Sitecore.Kernel and HtmlAgilityPack. When possible, use the same version of HtmlAgilityPack as your Sitecore version uses, or you'd have to add an assembly binding reference in your web.config.
rel="noopener"is not added when linking to_toprel="noopener"is now also added to protocol-independent target links- Added a try/catch statement to ensure this module never throws an exception at runtime
- Package is now built in release mode
Initial release