lpad on regular expression matches does not work

[Alan DeKok]

> On Mar 4, 2021, at 5:13 AM, Tomasz Chiliński via Freeradius-Users <freeradius-users at lists.freeradius.org> wrote:
> 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}}"

  lpad takes attributes as the first argument, not strings.

> 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?

  You're not passing an attribute.

  It's probably not too difficult to add the capability to do expansions.  As always, patches are welcome.

  Alan DeKok.