coolkey | How to build on various platforms

I am trying to extract the following from a PIV Smartcard:

1. Subject Common Name
2. Certificate Subject Alt Name / Microsoft Principal Name

I am using RedHat 6 (eventually 7) and CoolKey as my PKCS11 module.

I need a way to extract this information via code without requiring the smartcard pin, be it from shell commands or a smartcard library. Currently I can get the Common Name by using the shell command 'pkcs11-tools --module -T' so the Subject Alt Name is truly what I am after, but I would like to find a better way to get the Common Name if available.

I know this information is available without entering the pin as I can view it all in the included Smartcard Manager on RHEL (esc). I have a certificate chain of root, intermediate, and subordinate if that matters.

My thoughts are I have to extract the certificate from the card, verify that certificate with my local CAs, and then decrypt it. I have spent days reading documentation on APDUs, smartcards, and openssl and have gotten nowhere.

edit view of RHEL smart card manager:

This is what the smart card viewer shows when you open the card and view the details. The Microsoft Principal Name is what I'm looking to extract from the card, as well as the "common name" which is displayed in the Hierarchy portion as well as other spots, shown by the red text.

I actually have since switched to using pkcs15-tool, as pkcs11-tool cutoff longer common names (you can see this in the title bar of the screenshot, same issue). Output of: 'pkcs15-tool --list-info'