lpad on regular expression matches does not work

[Tomasz Chiliński]

W dniu 04.03.2021 11:13, Tomasz Chiliński via Freeradius-Users 
napisał(a):
> Hello all,
> 
> I try to improve Calling-Station-Id MAC address canonicalization a
> little bit, so that
> is should left pad MAC octets with zeroes.
> 
> I modified default settings as is:
> 
> mac-addr-regexp =
> '([0-9a-f]{1,2})[:\-\.]([0-9a-f]{1,2})[:\-\.]([0-9a-f]{1,2})[:\-\.]([0-9a-f]{1,2})[:\-\.]([0-9a-f]{1,2})[:\-\.]([0-9a-f]{1,2})'
> 
> This regular expression matches example MAC address properly:
> 
>     [0] => 18:d0:71:f3:70:8
>     [1] => 18
>     [2] => d0
>     [3] => 71
>     [4] => f3
>     [5] => 70
>     [6] => 8
> 
> Then I want to make the whole thing this way:
> 
> rewrite_calling_station_id {
> 	if (&Calling-Station-Id && (&Calling-Station-Id =~
> /^${policy.mac-addr-regexp}$/i)) {
> 		update request {
> 			&Calling-Station-Id := "%{toupper:%{lpad:%{1} 2 0}:%{lpad:%{2} 2
> 0}:%{lpad:%{3} 2 0}:%{lpad:%{4} 2 0}:%{lpad:%{5} 2 0}:%{lpad:%{6} 2
> 0}}"
> 		}
> 		updated
> 	}
> 	else {
> 		noop
> 	}
> }
> 
> And here's surprise - lpad expression function handles only attribute
> parameters (ex. {lpad:&User-Name 100 0}),
> but not regexp matches. What am I doing wrong?

Sorry - I forgot about very important info - I use:
freeradius-3.0.20-3.module_el8.3.0+476+0982bc20.x86_64
;-)

-- 
Bests,
Tomasz Chiliński, Chilan
opiekun projektu LMS - https://lms.org.pl
kierownik projektu LMS Plus / LMS+ - https://lms-plus.org