Get Current User's Name and Role in Customer Portal

I'm working on customizing the landing page in our company's Customer Portal by using a Wiki page, and I need to modify the displayed HTML elements of this page based on the current user's role, as well as write the user's name into one of the HTML elements.

What I'm trying to find is a way to make a call when the customer portal home page loads, to any already existing functions that would return the name and role of the current user, so that my javascript code can modify the HTML accordingly, or any other way to get this information and have it available in the backend when the user logs in.

I’ve found that these codes apparently return the user’s ID and Name, in some aspx files in the Acumatica source code, but I haven’t found a way to use them in the portal’s home page, if it’s possible:

PXAccess.GetUserID()

Current<AccessInfo.userID>
Current<AccessInfo.userName>

Thanks in advance for your help!