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@freeradius.org> wrote:
On 5 Aug 2013, at 22:37, Joseph Perrin <joseph@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@freeradius.org> FreeRADIUS Development Team
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