Re: ASCII NUL in NAS-Filter-Rule

[Ruslan Pustovoytov]

Phil, this construction does not send string2.
I assume when freeradius see nul character it stops reading the string.
Also I cannot send different rules for each customers in such manner.

I found one decision for my problem.
If I send additional NAS-Filter-Rule attribute equal to 0x00 after 
each of my own, character nul is successfully sending.




Phil Mayers wrote:

On 04/15/2011 09:05 AM, Ruslan Pustovoytov wrote:

Hi All

My nas box can use attribute NAS-Filter-Rule from radius server to
construct filter rules per subscriber on the fly.
Accodingly to rfc 4849 this attribute should contain ascii NUL (0x00) as
a delimiter between individual filter rules and at the end of rules.
Freeradius define this attribute as a string and I do not know how to
create valid string with nul character.
I changed attribute type to octets and successfully add null character
but a whole string converted to hex also and attribute was not readable.
How to send nul character without changing attribute type ?


Try this:

 update reply {
   NAS-Filter-Rule = string1\000string2
 }

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Re: ASCII NUL in NAS-Filter-Rule

[Ruslan Pustovoytov]

Is my question about sending ascii nul in string attribute is wrong or 
nobody run into this situation ?



Hi All

My nas box can use attribute NAS-Filter-Rule from radius server to 
construct filter rules per subscriber on the fly.
Accodingly to rfc 4849 this attribute should contain ascii NUL (0x00) 
as a delimiter between individual filter rules and at the end of rules.
Freeradius define this attribute as a string and I do not know how to 
create valid string with nul character.
I changed attribute type to octets and successfully add null character 
but a whole string converted to hex also and attribute was not readable.

How to send nul character without changing attribute type ?
-
List info/subscribe/unsubscribe? See 
http://www.freeradius.org/list/users.html


.



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ASCII NUL in NAS-Filter-Rule

[Ruslan Pustovoytov]

Hi All

My nas box can use attribute NAS-Filter-Rule from radius server to 
construct filter rules per subscriber on the fly.
Accodingly to rfc 4849 this attribute should contain ascii NUL (0x00) as 
a delimiter between individual filter rules and at the end of rules.
Freeradius define this attribute as a string and I do not know how to 
create valid string with nul character.
I changed attribute type to octets and successfully add null character 
but a whole string converted to hex also and attribute was not readable.

How to send nul character without changing attribute type ?
-
List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html