The name Guile stands for GNU's Ubiquitous Intelligent Language for Extensions. It provides the Scheme interpreter conforming to R4RS language specification. This section describes use of Guile as an extension language for GNU Radius. It assumes that the reader is sufficiently familiar with the Scheme language. Please, refer to section `Top' in Revised(4) Report on the Algorithmic Language Scheme, for the information about the language. If you wish to know more about the Guile, See section `Overview' in The Guile Reference Manual.
Scheme procedures can be called for processing both authentication
and accounting requests. The invocation of a scheme procedure for an
authentication request is triggered by Scheme-Procedure
attribute, the invocation for an accounting request is triggered
by Scheme-Acct-Procedure attribute. The following sections
address these issues in more detail.
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