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

[Brandon Armstead]

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] 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] 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
> 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 $(rb{re.subst,/(.*)m=audio ([0-9]+) (.*)/\2/})"); return the
> same invalid results.
>
> Thanks again!
>
> Sincerely,
> Brandon Armstead
>
> On Mon, Apr 26, 2010 at 7:33 PM, Brandon Armstead <brandon at cryy.com>wrote:
>
>> Hello All,
>>
>>    I hate to dig-up this older mailing list entry.  However I am some
>> additional trouble with what I believe is a completely posix-only regex.
>>
>> xlog("L_INFO", "[$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>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>
>>>
>>> _______________________________________________
>>>  Kamailio (OpenSER) - Users mailing list
>>> 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 listsr-users at lists.sip-router.orghttp://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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