Re: lpad on regular expression matches does not work

4 Mar 2021


      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