Thank you Daniel and Morten for your assistance and prompt reply.

To use the tobody transformation, i see that i would need to upgrade to 4.1 right? Im currently on 3.3.

I tried the below code:

                        $var(i)=0;

                        while($(hdr(Diversion)[$var(i)]) != $null ) {

                                 $avp(s:divhdr) = $(hdr(Diversion)[$var(i)]);

                                 avp_subst("$avp(s:divhdr)", "/.*sip:(.*)(@.*)/\1/");

                                 xlog("L_WARN", "$avp(s:divhdr)");

                                 if (!is_user_in("$avp(s:divhdr)", "7")) {

                                 sl_send_reply("403", "NOT ALLOWED");

                                 exit;

                                  };

                                 $var(i) = $var(i) +1;

                         }

However, it seems like group module cant parse the output 313 as seen below:

Apr 10 13:16:43 SipProxy-Test /usr/local/sbin/kamailio[7471]: WARNING: <script>: 313

Apr 10 13:16:43 SipProxy-Test /usr/local/sbin/kamailio[7471]: ERROR: group [group.c:114]: failed to parse URI <313>

Apr 10 13:16:43 SipProxy-Test /usr/local/sbin/kamailio[7471]: ERROR: group [group.c:158]: failed to get username@domain

A bigger issue is that a certain client is sending more than one diversion header with different format as seen below:

Diversion: <tel:22030009>;reason=no-answer;screen=no;privacy=off

Diversion: "Solonas A" <sip:16@10.10.10.22>;reason=unconditional

So in this case i cant really know how to extract the diversion number using a static substitution. Is there a way to adapt to different formats to extract the diversion number? 

Thanking you in advance

Phillip

Date: Tue, 09 Apr 2013 16:43:56 +0200
From: Daniel-Constantin Mierla <miconda@gmail.com>
Subject: Re: [SR-Users] Diversion header authentication
To: "Kamailio (SER) - Users Mailing List"
        <sr-users@lists.sip-router.org>
Message-ID: <5164292C.4080408@gmail.com>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"

Hello,

just adding that the tobody transformation could be handy to extract the
user or uri part of a Diversion header, not to fight with subst expressions:

-
http://www.kamailio.org/wiki/cookbooks/devel/transformations#to-body_transformations

Cheers,
Daniel

On 4/9/13 3:16 PM, Morten Isaksen wrote:
> Hi,
>
> I have not tested this, but try:
>
> $avp(s:divhdr) = $(hdr(Diversion)[$var(i)]);
> avp_subst("$avp(s:divhdr)", "/.*sip:\+45(.*)(@.*)/\1/"); # Extract
> number between +45 and @
>
> if (is_user_in("$avp(s:divhdr)", "1") { ... }
>
> Please note that there can be more than one Diverseion header. In that
> case you can use:
>
>                         $var(i)=0;
>                         while($(hdr(Diversion)[$var(i)]) != $null ) {
>                                 $avp(s:divhdr) =
> $(hdr(Diversion)[$var(i)]);
>                                 xlog("L_WARN", "$avp(s:divhdr)");
>
>
>                                 $var(i) = $var(i) +1;
>                         }
>
>
>
> /Morten

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