SipCapture Module

Alexandr Dubovikov

   <alexandr.dubovikov@gmail.com>

Edited by

Alexandr Dubovikov

   <alexandr.dubovikov@gmail.com>

   Copyright © 2011 QSC AG

   Copyright © 2011 http://www.qsc.de
     __________________________________________________________________

   Table of Contents

   1. Admin Guide

        1. Overview
        2. Dependencies

              2.1. Kamailio Modules
              2.2. External Libraries or Applications

        3. Parameters

              3.1. db_url (str)
              3.2. table_name (str)
              3.3. db_insert_mode (integer)
              3.4. capture_on (integer)
              3.5. hep_capture_on (integer)
              3.6. raw_ipip_capture_on (integer)
              3.7. raw_moni_capture_on (integer)
              3.8. raw_socket_listen (string)
              3.9. raw_interface (string)
              3.10. raw_sock_children (integer)
              3.11. promiscuous_on (integer)
              3.12. raw_moni_bpf_on (integer)
              3.13. capture_node (str)

        4. MI Commands

              4.1. sip_capture

        5. Database setup
        6. Limitation

   List of Examples

   1.1. Set db_url parameter
   1.2. Set sip_capture parameter
   1.3. db_insert_mode example
   1.4. Set capture_on parameter
   1.5. Set hep_capture_on parameter
   1.6. Set raw_ipip_capture_on parameter
   1.7. Set raw_moni_capture_on parameter
   1.8. Set raw_socket_listen parameter
   1.9. Set raw_socket_listen parameter
   1.10. Set raw_socket_listen parameter
   1.11. Set hep_capture_on parameter
   1.12. Set raw_moni_bpf_on parameter
   1.13. Set capture_node parameter

Chapter 1. Admin Guide

   Table of Contents

   1. Overview
   2. Dependencies

        2.1. Kamailio Modules
        2.2. External Libraries or Applications

   3. Parameters

        3.1. db_url (str)
        3.2. table_name (str)
        3.3. db_insert_mode (integer)
        3.4. capture_on (integer)
        3.5. hep_capture_on (integer)
        3.6. raw_ipip_capture_on (integer)
        3.7. raw_moni_capture_on (integer)
        3.8. raw_socket_listen (string)
        3.9. raw_interface (string)
        3.10. raw_sock_children (integer)
        3.11. promiscuous_on (integer)
        3.12. raw_moni_bpf_on (integer)
        3.13. capture_node (str)

   4. MI Commands

        4.1. sip_capture

   5. Database setup
   6. Limitation

1. Overview

   Offer a possibility to store incoming/outgoing SIP messages in
   database.

   Kamailio can capture SIP messages in three mode
     * IPIP encapsulation. (ETHHDR+IPHDR+IPHDR+UDPHDR).
     * Monitoring/mirroring port.
     * Homer encapsulation protocl mode (HEP v1).

   The capturing can be turned on/off using fifo commad.

   kamctl fifo sip_capture on

   kamctl fifo sip_capture off

2. Dependencies

   2.1. Kamailio Modules
   2.2. External Libraries or Applications

2.1. Kamailio Modules

   The following modules must be loaded before this module:
     * database module - mysql, postrgress, dbtext, unixodbc...

2.2. External Libraries or Applications

   The following libraries or applications must be installed before
   running Kamailio with this module loaded:
     * None.

3. Parameters

   3.1. db_url (str)
   3.2. table_name (str)
   3.3. db_insert_mode (integer)
   3.4. capture_on (integer)
   3.5. hep_capture_on (integer)
   3.6. raw_ipip_capture_on (integer)
   3.7. raw_moni_capture_on (integer)
   3.8. raw_socket_listen (string)
   3.9. raw_interface (string)
   3.10. raw_sock_children (integer)
   3.11. promiscuous_on (integer)
   3.12. raw_moni_bpf_on (integer)
   3.13. capture_node (str)

3.1. db_url (str)

   Database URL.

   Default value is "".

   Example 1.1. Set db_url parameter
...
modparam("sipcapture", "db_url", "mysql://user:passwd@host/dbname")
...

3.2. table_name (str)

   Name of the table's name where to store the SIP messages.

   Default value is "sip_capture".

   Example 1.2. Set sip_capture parameter
...
modparam("sipcapture", "table_name", "homer_capture")
...

3.3. db_insert_mode (integer)

   If set to 1, use INSERT DELAYED to store sip message into capture table
   when the DB driver has support for it. If no INSERT DELAYED support is
   offered by DB driver, then standard INSERT is used.

   Default value is 0 (no INSERT DELAYED).

   Example 1.3. db_insert_mode example
modparam("sipcapture", "db_insert_mode", 1)

3.4. capture_on (integer)

   Parameter to enable/disable capture globaly (on(1)/off(0))

   Default value is "0".

   Example 1.4. Set capture_on parameter
...
modparam("sipcapture", "capture_on", 1)
...

3.5. hep_capture_on (integer)

   Parameter to enable/disable capture of HEP (on(1)/off(0))

   Default value is "0".

   Example 1.5. Set hep_capture_on parameter
...
modparam("sipcapture", "hep_capture_on", 1)
...

3.6. raw_ipip_capture_on (integer)

   Parameter to enable/disable IPIP capturing (on(1)/off(0))

   Default value is "0".

   Example 1.6. Set raw_ipip_capture_on parameter
...
modparam("sipcapture", "raw_ipip_capture_on", 1)
...

3.7. raw_moni_capture_on (integer)

   Parameter to enable/disable monitoring/mirroring port capturing
   (on(1)/off(0)) Only one mode on raw socket can be enabled! Monitoring
   port capturing currently supported only on Linux.

   Default value is "0".

   Example 1.7. Set raw_moni_capture_on parameter
...
modparam("sipcapture", "raw_moni_capture_on", 1)
...

3.8. raw_socket_listen (string)

   Parameter indicate an listen IP address of RAW socket for IPIP
   capturing. You can also define a port/portrange for IPIP/Mirroring
   mode, to capture SIP messages in specific ports:

   "10.0.0.1:5060" - the source/destination port of the SIP message must
   be equal 5060

   "10.0.0.1:5060-5090" - the source/destination port of the SIP message
   must be equal or be between 5060 and 5090.

   The port/portrange must be defined if you are planning to use mirroring
   capture! In this case, the part with IP address will be ignored, but to
   make parser happy, use i.e. 10.0.0.0

   Default value is "".

   Example 1.8. Set raw_socket_listen parameter
...
modparam("sipcapture", "raw_socket_listen", "10.0.0.1:5060-5090")
...
modparam("sipcapture", "raw_socket_listen", "10.0.0.1:5060")
...

3.9. raw_interface (string)

   Name of the interface to bind on the raw socket.

   Default value is "".

   Example 1.9. Set raw_socket_listen parameter
...
modparam("sipcapture", "raw_interface", "eth0")
...

3.10. raw_sock_children (integer)

   Parameter define how much children must be created to listen the raw
   socket.

   Default value is "1".

   Example 1.10. Set raw_socket_listen parameter
...
modparam("sipcapture", "raw_sock_children", 6)
...

3.11. promiscuous_on (integer)

   Parameter to enable/disable promiscuous mode on the raw socket. Linux
   only.

   Default value is "0".

   Example 1.11. Set hep_capture_on parameter
...
modparam("sipcapture", "promiscuous_on", 1)
...

3.12. raw_moni_bpf_on (integer)

   Activate Linux Socket Filter (LSF based on BPF) on the mirroring
   interface. The structure is defined in linux/filter.h. The default LSF
   accept a port/portrange from the raw_socket_listen param. Currently LSF
   supported only on Linux.

   Default value is "0".

   Example 1.12. Set raw_moni_bpf_on parameter
...
modparam("sipcapture", "raw_moni_bpf_on", 1)
...

3.13. capture_node (str)

   Name of the capture node.

   Default value is "homer01".

   Example 1.13. Set capture_node parameter
...
modparam("sipcapture", "capture_node", "homer03")
...

4. MI Commands

   4.1. sip_capture

4.1.  sip_capture

   Name: sip_capture

   Parameters:
     * capture_mode : turns on/off SIP message capturing. Possible values
       are:
          + on
          + off
       The parameter is optional - if missing, the command will return the
       status of the SIP message capturing (as string “on” or “off” )
       without changing anything.

   MI FIFO Command Format:
                :sip_capture:_reply_fifo_file_
                capture_mode
                _empty_line_

5. Database setup

   Before running Kamailio with sipcapture, you have to setup the database
   tables where the module will store the data. For that, if the table
   were not created by the installation script or you choose to install
   everything by yourself you can use the sipcapture_create.sql, SQL
   script in the sql folder of sipcapture module as template. You can also
   find the complete database documentation on the project webpage,
   http://www.kamailio.org/docs/db-tables/kamailio-db-devel.html.

6. Limitation

   1. Only one capturing mode on RAW socket is supported: IPIP or
   monitoring/mirroring port. Don't activate both at the same time. 2. By
   default MySQL doesn't support INSERT DELAYED for partitioning table.
   You can patch MySQL (http://bugs.mysql.com/bug.php?id=50393) 3.
   Mirroring port capturing works only on Linux.
