Re: [PATCH] config definition file hooking (for external modules), ie. sqlbox, mbuni, etc.

Stipe Tolj wrote:
> Hi list,
> 
> now, as Kannel maintains its own way of "knowing" what config directives 
> are allowed in group sections, this is a problem if external modules, 
> ie. Rene's sqlbox or Paul's Mbuni need to use the same gwlib/cfg.[ch] 
> thingies.
> 
> I tried to introduce a generic hooking mechanism for the 2 functions 
> is_allowed_in_group() and is_single_group() that use the #include 
> "cfg.def" for the core.
> 
> Now extenal modules can use cfg_add_hooks(void *a, void *b) to offer 
> their own "version" of these 2 routines and hence #include 
> "foobar-cfg.def" in their own code space.
> 
> The hooks are appended to a list and a wrapper loops arround the 
> functiokns in the lists to get a boolean value.
> 
> I know that this is not the most elegant way. Alex suggested using 
> dlopne() and dlsym(), which are of course a "better" approach, but still 
> we need to "concatenate" the defined groups and I had no idea how to do.
> 
> Please review and vote.

BTW, there is no logic change or behaviour change for the normal core Kannel. It 
will put it's own core_foobar() functions into the list and process on them 
only, in case no external module add hooks here.

So, nothing that harms existing configs.

Stipe

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