portal role from abap user

hi sap-gurus 😊

how can I get the portal roles which are connected with an abap sap user.

for example an abap user starts a wd application in the portal and I want to find out if he is in the administrator role for this web dynpro application and has enhanced rights for the application?

has anyone an idea how I can read out these informations in my wd application?

thanks