[Devel] exporting pseudo variables

[Daniel-Constantin Mierla]

On 05/02/2006 01:24 PM, Klaus Darilion wrote:
> Daniel-Constantin Mierla wrote:
>> Hello Klaus,
>>
>> On 05/02/2006 01:03 PM, Klaus Darilion wrote:
>>> Hi Daniel!
>>>
>>> Is it possible to do the parsing of the pseudo variable in the 
>>> module? E.g. for tls there will be similar paramters, for the peer 
>>> certificate and the local certificate. Is it possible to register 
>>> only a prefix, e.g. $tls_ and parse the latter in the module itself?
>> no, the parsing is done by core. The modules can add new specifiers, 
>> but must be the full name, so they are visible in other modules as 
>> well.. You can add many specifiers with the same callback function 
>> and different values of the parameter.
>
> ok, consider a simple scenario: $tls_peer_subject and $tls_my_subject 
> (reflects the subjects of the local certificate and the peer's 
> certificate).
>
> I will register:
>
> mod_init {
> xl_add_extra("tls_peer_subj", get_cert_parameter, TLS_PEER|TLS_SUBJECT);
> xl_add_extra("tls_my_subj",   get_cert_parameter, TLS_MY|TLS_SUBJECT);
> }
>
> How exactly will I retrieve the parameter inside get_cert_parameter? I 
> guess xl_parse_spec must be used. Can you give ma short code snippet 
> please?
sorry, the xl_add_extra() has to be extended to accept the parameter. 
The core specifiers register and retrieve such parameter, just have a 
look at xl_get_from_attr() in items.c

I will extend xl_add_extra().

Cheers,
Daniel

>
> thanks
> kaus
>
>>
>> Cheers,
>> Daniel
>>
>>>
>>>
>>> regards
>>> klaus
>>>
>>>
>>> Daniel-Constantin Mierla wrote:
>>>> Hello,
>>>>
>>>> On 04/28/2006 12:05 PM, Klaus Darilion wrote:
>>>>
>>>>> Hi!
>>>>>
>>>>> I'm studying how to export pseudo variables.
>>>>>
>>>>> In tm.c there is this code:
>>>>>
>>>>>         if(xl_add_extra("T_branch_idx", it_get_tm_branch_idx, 100 
>>>>> )!=0)
>>>>>         {
>>>>>                 LOG(L_ERR,"ERROR:tm:mod_init: failed to register 
>>>>> pvar "
>>>>>                         "[T_branch_idx]\n");
>>>>>                 return -1;
>>>>>         }
>>>>>
>>>>> Thus I guess the exported pseudo variable is called $T_branch_idx, 
>>>>> but the README says:
>>>>>
>>>>> $T_branch_index - the index (starting with 1 for the first branch)...
>>>>>            ^^^^
>>>>>
>>>>> Is guess there is a typo.
>>>>
>>>> indeed.
>>>>
>>>>>
>>>>> Further, do we have a schema how to name the exported pseudo 
>>>>> variables?
>>>>
>>>> There is none, but the name should be suggestive as much as 
>>>> possible. Somehow, we should find one to avoid duplicates.
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>>>
>>>>> regards
>>>>> klaus
>>>>>
>>>>> _______________________________________________
>>>>> Devel mailing list
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>>>>>
>>>
>>>
>
>