Possible bug in unlang?
Phil Mayers
p.mayers at imperial.ac.uk
Thu Jul 31 14:51:49 CEST 2008
Alan DeKok wrote:
> Phil Mayers wrote:
>> We've recently moved our servers to FreeRadius 2, and we've been having
>> reports of some problems with our wireless service.
> ...
>> ...specifically, it seems that the xlat of this string is treating
>> embedded "\" as escape characters.
>
> That needs to be fixed. I'll take a look next week, as I'm away at a
> conference right now.
I'm also seeing this problem with rlm_sql_log and rlm_sqlippool it
seems, though I'm amazed I haven't seen it before.
I've had a dig in the guts of radius_xlat (yikes, complex) and done some
testing with "user\random" e.g.:
update reply {
# works
My-Attr-1 = "%{User-Name}"
# works
My-Attr-1 = "%u"
# works
My-Attr-1 = "%{Stripped-User-Name:-%{User-Name:-none}}"
# fails, "user\random" turns to "user<cr>andom"
My-Attr-1 = "%{SQL-User-Name}"
}
...so I think this means the issue must be in lib/valuepair.c,
specifically the "pairparsevalue" function (called from pairmake, called
from sql_set_user)?
Similarly I presume setting the "User-Name" in the reply items from
unlang calls pairmake and the same code path.
I'm not sure what the best way to proceed with regards fixing it - most
of the ideas I had were hacks. If you have any pointers I'm happy to
take a look.
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