[SR-Users] [Kamailio-Users] PCRE Regex / Transformations Bug?

Daniel-Constantin Mierla miconda at gmail.com
Fri Apr 30 21:21:43 CEST 2010



On 4/30/10 9:14 PM, Daniel-Constantin Mierla wrote:
> Hi Brandon,
>
> you are missing the multi-line matching flag, try:
> xlog("L_INFO", "[$ci] $(rb{re.subst,/^(.*)m=audio ([0-9]+)(.*)$/\2/s})")
>
> Note the 's' after the last '/' in subst expression.
those details were missing in docs, so I updated the core cookbooks for 
3.0 and devel:

http://sip-router.org/wiki/cookbooks/transformations/devel#resubst_expression

>
> Cheers,
> Daniel
>
>
> On 4/29/10 10:21 PM, Brandon Armstead wrote:
>> Daniel,
>>
>> Here is the XLOG output, the top log is the unmodified version and 
>> the bottom is the modified version.
>>
>> xlog("L_INFO", "[$ci] $rb") OUTPUTS:
>>
>> Apr 29 20:17:23 sip-core02 /sbin/kamailio[23550]: 
>> [6db72a2f-7e263847 at 192.168.1.75 
>> <mailto:6db72a2f-7e263847 at 192.168.1.75>] v=0#015#012o=- 24986155 
>> 24986155 IN IP4 99.21.137.236#015#012s=-#015#012c=IN IP4 
>> 174.37.45.134#015#012t=0 0#015#012m=audio 55630 RTP/AVP 0 2 4 8 18 96 
>> 97 98 101#015#012a=rtpmap:0 PCMU/8000#015#012a=rtpmap:2 
>> G726-32/8000#015#012a=rtpmap:4 G723/8000#015#012a=rtpmap:8 
>> PCMA/8000#015#012a=rtpmap:18 G729a/8000#015#012a=rtpmap:96 
>> G726-40/8000#015#012a=rtpmap:97 G726-24/8000#015#012a=rtpmap:98 
>> G726-16/8000#015#012a=rtpmap:101 
>> telephone-event/8000#015#012a=fmtp:101 
>> 0-15#015#012a=ptime:30#015#012a=sendrecv#015#012a=nortpproxy:yes#015
>>
>> xlog("L_INFO", "[$ci] $(rb{re.subst,/^(.*)m=audio 
>> ([0-9]+)(.*)$/\2/})") OUTPUTS:
>>
>> Apr 29 20:17:23 sip-core02 /sbin/kamailio[23550]: 
>> [6db72a2f-7e263847 at 192.168.1.75 
>> <mailto:6db72a2f-7e263847 at 192.168.1.75>] v=0#015#012o=- 24986155 
>> 24986155 IN IP4 99.21.137.236#015#012s=-#015#012c=IN IP4 
>> 174.37.45.134#015#012t=0 0#015#01255630#012a=rtpmap:0 
>> PCMU/8000#015#012a=rtpmap:2 G726-32/8000#015#012a=rtpmap:4 
>> G723/8000#015#012a=rtpmap:8 PCMA/8000#015#012a=rtpmap:18 
>> G729a/8000#015#012a=rtpmap:96 G726-40/8000#015#012a=rtpmap:97 
>> G726-24/8000#015#012a=rtpmap:98 G726-16/8000#015#012a=rtpmap:101 
>> telephone-event/8000#015#012a=fmtp:101 
>> 0-15#015#012a=ptime:30#015#012a=sendrecv#015#012a=nortpproxy:yes#015
>>
>> As for the actual INVITE / SDP BODY:
>>
>> v=0.
>> o=- 24986155 24986155 IN IP4 99.21.XXX.XXX.
>> s=-.
>> c=IN IP4 174.37.XX.XXX.
>> t=0 0.
>> m=audio 55630 RTP/AVP 0 2 4 8 18 96 97 98 101.
>> a=rtpmap:0 PCMU/8000.
>> a=rtpmap:2 G726-32/8000.
>> a=rtpmap:4 G723/8000.
>> a=rtpmap:8 PCMA/8000.
>> a=rtpmap:18 G729a/8000.
>> a=rtpmap:96 G726-40/8000.
>> a=rtpmap:97 G726-24/8000.
>> a=rtpmap:98 G726-16/8000.
>> a=rtpmap:101 telephone-event/8000.
>> a=fmtp:101 0-15.
>> a=ptime:30.
>> a=sendrecv.
>> a=nortpproxy:yes.
>>
>> Let me know if this is sufficient or if there is anything else I can 
>> provide.  Thanks!
>>
>> Sincerely,
>> Brandon Armstead
>>
>> On Wed, Apr 28, 2010 at 3:54 PM, Daniel-Constantin Mierla 
>> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>>     Hello,
>>
>>     can you paste here the sip message and the result of the
>>     substitution? It will help to troubleshoot if is something wrong
>>     there.
>>
>>     Cheers,
>>     Daniel
>>
>>
>>
>>     On 4/27/10 2:35 AM, Brandon Armstead wrote:
>>>     Hello All,
>>>
>>>       Correction, it seems both the last supplied regex and
>>>     xlog("L_INFO", "[$ci] m=audio $(rb{re.subst,/(.*)m=audio
>>>     ([0-9]+) (.*)/\2/})"); return the same invalid results.
>>>
>>>     Thanks again!
>>>
>>>     Sincerely,
>>>     Brandon Armstead
>>>
>>>     On Mon, Apr 26, 2010 at 7:33 PM, Brandon Armstead
>>>     <brandon at cryy.com <mailto:brandon at cryy.com>> wrote:
>>>
>>>         Hello All,
>>>
>>>            I hate to dig-up this older mailing list entry.  However
>>>         I am some additional trouble with what I believe is a
>>>         completely posix-only regex.
>>>
>>>         xlog("L_INFO", "[$ci] m=audio
>>>         $(rb{re.subst,/(.*)m=audio(.*)/\2/})");
>>>
>>>         I would expect to give me the port from the m=audio line,
>>>         however it does not -- it simply removes m=audio.
>>>
>>>         Any thoughts / ideas / suggestions?
>>>
>>>         Sincerely,
>>>         Brandon Armstead
>>>
>>>
>>>         On Wed, Dec 23, 2009 at 9:31 PM, Iñaki Baz Castillo
>>>         <ibc at aliax.net <mailto:ibc at aliax.net>> wrote:
>>>
>>>             El Miércoles, 23 de Diciembre de 2009, Daniel-Constantin
>>>             Mierla escribió:
>>>             > the re.subst transformation uses Posix regexp for
>>>             matching, only the
>>>             > format of the command is perl-like. I implemented this
>>>             because textops
>>>             > has no dependency of extra libraries than core and I
>>>             wanted to keep it so.
>>>             >
>>>             > Maybe is good to add a pcre.subst transformation in
>>>             regex module to be
>>>             > able to use extended regexp formats given by libpcre.
>>>
>>>             I¡ll try to implement it when I get some spare time :)
>>>
>>>
>>>             --
>>>             Iñaki Baz Castillo <ibc at aliax.net <mailto:ibc at aliax.net>>
>>>
>>>             _______________________________________________
>>>             Kamailio (OpenSER) - Users mailing list
>>>             Users at lists.kamailio.org <mailto:Users at lists.kamailio.org>
>>>             http://lists.kamailio.org/cgi-bin/mailman/listinfo/users
>>>             http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>>>
>>>
>>>     _______________________________________________
>>>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>     sr-users at lists.sip-router.org  <mailto:sr-users at lists.sip-router.org>
>>>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>        
>>
>>     -- Daniel-Constantin Mierla * http://www.asipto.com/
>>
>>     *http://twitter.com/miconda
>>     *http://www.linkedin.com/in/danielconstantinmierla
>>          
>>
>>
>>
>> _______________________________________________
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>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>    
>
> -- 
> Daniel-Constantin Mierla
> *http://www.asipto.com/
> *http://twitter.com/miconda
> *http://www.linkedin.com/in/danielconstantinmierla
>    
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>    

-- 
Daniel-Constantin Mierla
* http://www.asipto.com/
* http://twitter.com/miconda
* http://www.linkedin.com/in/danielconstantinmierla

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