[SR-Users] Caseless regex

[Daniel-Constantin Mierla]

Hello,

adding some more details to mention that regex operations done by the
core (the =~ operator) use the libc posix regex functions, which do not
support extended syntax. Also, these operations done by core use the
case insensitive flag.

As mentioned by Henning, regex should be an alternative, or maybe
dialplan if one wants db-storage+caching of those regex rules.

Moreover, if the above are not enough, a kemi embedded interpreter
(e.g., app_lua, app_python) can be used with inline execution in
kamailio.cfg routing blocks -- those external scripting languages should
have many options for regex matching.

Cheers,
Daniel

On 13.10.20 13:04, Henning Westerholt wrote:
>
> Hello,
>
>  
>
> just an idea, have you already tried this module:
> https://www.kamailio.org/docs/modules/stable/modules/regex.html
> <https://www.kamailio.org/docs/modules/stable/modules/regex.html>
>
>  
>
> Cheers,
>
>  
>
> Henning
>
>  
>
> -- 
>
> Henning Westerholt – https://skalatan.de/blog/ <https://skalatan.de/blog/>
>
> Kamailio services – https://gilawa.com <https://gilawa.com/>
>
>  
>
> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of
> *Marat Gareev
> *Sent:* Tuesday, October 13, 2020 10:55 AM
> *To:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
> *Subject:* [SR-Users] Caseless regex
>
>  
>
> Hello,
>
>  
>
> Is it possible write more readable regular expression
>
> if($tU =~ "(?i)^test$") {
>
>     ...
>
> }
>
> instead of"^[tT][eE][sS][tT]$"?
>
>  
>
> On the first option, I get the error:
>
> 0(47250) ERROR: <core> [core/rvalue.c:3038]: fix_match_rve(): Bad
> regular expression
>
>  
>
> Regards,
>
> Marat
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

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