Thought I would add some more info.
We are receiving these non-rfc-compliant accounting messages and then
proxying them on to another server. We would like to try to either drop
the User-Name attribute from the accounting packet or change the 0 length
value to something else before we proxy it on. Basically we will be
correcting this packet for the people that are sending these incorrectly.
Thanks for any suggestions.
Dustin Doris
On Wed, 3 Sep 2003, Dustin Doris wrote:
> Hello,
>
> We are currently getting some interesting accounting packets that are
> coming in with User-Name of NULL. We would like to use rlm_rewrite to
> change all NULL usernames to something else.
>
> We are running freebsd 4.8 with freeradius .9.
>
> Here is what I setup so far.
>
> attr_rewrite noname {
> attribute = User-Name
> searchin = packet
> searchfor = *
> replacewith = "ihavenoname"
> ignore_case = yes
> new_attribute = no
> max_matches = 10
> append = no
> }
>
> * we have tried
> "NULL"
> "[^*$]"
> "[^\\000$]"
>
> Then in the accounting section we added noname
>
> accounting {
> noname
> acct_unique
> detail1
> detail2
> }
>
>
> However, it doesn't seem to match when we send a User-Name attribute
> with a NULL value. We tried it with radclient and sent
> User-Name=""
> User-Name=" "
>
> The message we get is
>
> rlm_attr_rewrite: Attribute User-Name string value NULL or of zero length
> modcall[accounting]: module "nodomain" returns noop
>
> I'm guessing that rlm_rewrite can't change a NULL User-Name setting
> because its looking for something to change to something else.
>
> We also gave a shot with preproxy_users, but it doesn't seem to be picked
> up. Is that enabled in freeradius .9?
>
> DEFAULT
> User-Name := "ihavenoname"
>
> The rlm_rewrite does work with a valid User-Name
>
> rlm_attr_rewrite: Changed value for attribute User-Name from 'a' to
> 'ihavenoname'
> modcall[accounting]: module "nodomain" returns ok
>
> This was sending an accounting packet with User-Name of a.
>
> Any ideas of anything else we could try, or perhaps a recent cvs snapshot?
>
> Thanks
>
> Dustin Doris
>
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