How to use reference instead of printing attribute

[Castel, Nicolas]

Hi,

We currently use 3.0.x version of freeRADIUS.

I try to follow recommendations found in unlang man concerning use of attribute references.

Extract from man:
"We recommend using attribute references instead of printing attributes to a string, e.g. (User-Name == "%{Filter-Id}").  Attribute references will be
       faster and more efficient."

It seems not to work correctly with my configuration.

An example of debug which works with printing of attribute:

(2)     } # if ("%{proxy-reply:Packet-Type}" == "Access-Accept")  = ok
(2)     if ("%{proxy-reply:Packet-Type}" == "Access-Challenge") {
(2)     EXPAND %{proxy-reply:Packet-Type}
(2)        --> Access-Accept
(2)     if ("%{proxy-reply:Packet-Type}" == "Access-Challenge")  -> FALSE
(2)   } # post-proxy = ok

Corresponding configuration:

if ("%{proxy-reply:Packet-Type}" == "Access-Challenge") {

The same example using reference which do not work:

(2)     } # if ("%{proxy-reply:Packet-Type}" == "Access-Accept")  = ok
(2)     if (&proxy-reply:Packet-Type == "Access-Challenge") {
(2)     ERROR: Failed retrieving values required to evaluate condition
(2)   } # post-proxy = ok

Corresponding configuration:

if (&proxy-reply:Packet-Type == "Access-Challenge") {

Another test using directly integer value

(2)     } # if ("%{proxy-reply:Packet-Type}" == "Access-Accept")  = ok
(2)     if (&proxy-reply:Packet-Type == 11) {
(2)     ERROR: Failed retrieving values required to evaluate condition
(2)   } # post-proxy = ok

Corresponding configuration:

if (&proxy-reply:Packet-Type == 11) {

Same thing using following configuration:

(2)     if (&proxy-reply:Packet-Type == Access-Challenge) {
(2)     ERROR: Failed retrieving values required to evaluate condition

Is there some limitations using references ?

Weird thing is that reference works with Auth-Type attribute used in another place in my configuration:

(6)     if (&control:Auth-Type == WIFI-GW-Auth) {
(6)     if (&control:Auth-Type == WIFI-GW-Auth)  -> TRUE

Corresponding configuration:
if (&control:Auth-Type == WIFI-GW-Auth) {

Thanks for help.

Nicolas Castel

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