Get The LoggedInuser() Site page Web Address Identifier

Hello Team,

Is there any way to get the currentloggedInUser site page tab URL Dynamically?.

More details about my requirement...Assume that there is a record A, Site A (User1) and Site B (User2). Once User1 navigate from the Site A to the particular record we
should show related action for that User1.If User2 logged in and navigated from the Site B to the same record user shouldn't see any related actions. Is there any way to achieve this functionality without create separate record for site?.

Thanks!!