New subject: [sr-dev] Reqd. help on Corex (Obfuscate) - Kamailio 4.2.x

16 Sep 2014

Thanks for replying !

But how to check whether a particular message received by Kamailio was sent
by UAC or SIP Server ?
Also, on the same lines - how to know whether a particular message about to
be send from Kamailio is bound to UAC or SIP Server ?

On Tue, Sep 16, 2014 at 10:51 PM, Muhammad Shahzad &lt;shaheryarkh(a)gmail.com&gt;
wrote:

...
  Hi,

 The network io intercept feature basically allows kamailio script writer
 to do whatever s/he may want to do with raw SIP packets (that are just
 received by kamailio or about to be sent out by kamailio), e.g. encryption,
 compression or any final touches to sip message before it is processed by
 kamailio core. That is why it is purposely kept abstract and any particular
 use or implementation is left to the script writer.

 In your case the encryption / decryption code is in C/C++, you can try one
 of the followings,

 1. Writeup a C/C++ program that receives outgoing SIP message as text (and
 some other parameters, e.g. encryption key) in input arguments and returns
 the encrypted message in event_route [ network:msg ] and vice versa (for
 incoming messages). You can call this program directly from kamailio.cfg
 script.

 2. Writeup e.g. a PERL wrapper for your encryption / decryption C/C++ code
 and call it using kamailio app_perl module within event_route [ network:msg
 ] as demonstrated in this example,

 http://kamailio.org/docs/modules/devel/modules/corex.html#idp125704

 You can also use any other kamailio language bind of you choice as well,
 e.g. Python, LUA, JAVA and so on.

 I would recommend the second option, as it has less processing overhead
 for kamailio.

 Thank you.

 On Tue, Sep 16, 2014 at 6:09 PM, Rahul MathuR &lt;rahul.ultimate(a)gmail.com&gt;
 wrote:

  Hello,

 I was going through the new features and stumbled upon this new one -
 developed by Mohd. Shahzad Shafi.
 As already mentioned on the wiki about this module, I intend to use it
 for my custom security layer between UACs and SIP Proxy (Kamailio) but the
 issue is - the custom security layer (encryption/decryption code) is
 written in C and should precisely be applied for the messages between UAC
 and Proxy.

 Is there a way I can achieve this using Corex module since it does
 intercept the network I/O messages ?

 Any help here would be really appreciated.

 --
 Warm Regds.
 MathuRahul

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-- 
Warm Regds.
MathuRahul

Re: [SR-Users] [sr-dev] Reqd. help on Corex (Obfuscate) - Kamailio 4.2.x