Auth by NAS-Identifier using unlang

[Joseph Perrin]

Thank you.  I now understand.

A stock install of freeRadius in Fedora, (i.e. via yum), does not provide a
man page for unlang.  Had you not helped me, I'd simply not know.


On Mon, Aug 5, 2013 at 6:00 PM, Arran Cudbard-Bell <
a.cudbardb at freeradius.org> wrote:

>
> On 5 Aug 2013, at 22:37, Joseph Perrin <joseph at lifeonthestreet.org> wrote:
>
> > The following appears to now work, but I don't understand some things:
> >
> > files
> >
> > if (control:Local-Group != "%{NAS-Identifier}" ) {
> >
> > Why does control:Local-Group not need to be enclosed in "%{ }", but
> NAS-Identifier does?
>
> In 2.x.x bareword left operand is assumed to be an attribute reference.
> Right bareword operand is assumed to be a number literal, or a member of
> the set of string values associated with an integer attribute.
>
> LHS/RHS operands are not interchangeable in their roles.
>
> > And why does %{ } content need to be within quotes
>
> It's a string expansion, string expansions only function inside double
> quotes.  This is similar to variable expansion in most scripting languages.
>
> > , when the documentation doesn't say anything about them needing to be
> in quotes?
>
> Man unlang
>
> VARIABLES
>      Run-time variables are referenced using the following syntax
>
>                 %{Variable-Name}
>
>      Note that unlike C, there is no way to declare variables, or to refer
> to them  outside  of  a  string
>      context.   All  references  to  variables  MUST be contained inside
> of a double-quoted or back-quoted
>      string."
>
> > It's clear I must have a call to "files" prior to this in order to
> populate the "control" list, right?
>
> Yes.
>
> Arran Cudbard-Bell <a.cudbardb at freeradius.org>
> FreeRADIUS Development Team
>
> -
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>
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