Re: Removing characters from usernames

[Phil Mayers <p.mayers@imperial.ac.uk>]

Andrew Zirkel wrote:
> Is there a way to parse the input of a username and password before it 
> is passed to the back end database?  I'm doing mac address 
> authentication and some devices are passing the mac address with dashes, 
> where I need to have no separation between the octets.  I basically need 
> to strip out these dashes from the input.

Either the "hints" file or "attr_rewrite" can do this. E.g. for the former:

DEFAULT User-Name =~ "(..)-(..)-(..)-(..)-(..)-(..)"
        User-Name := `%{1}%{2}%{3}%{4}%{5}%{6}`

Or in attr_rewrite:

modules {
        attr_rewrite username-mac {
                attribute = User-Name
                searchin = packet
                searchfor = "^(..)-(..)-(..)-(..)-(..)-(..)$"
                replacewith = "%{1}%{2}%{3}%{4}%{5}%{6}"
                max_matches = 1
        }

}

authorize {
  preprocess
  username-mac
  # rest of modues
}