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  Bandersnatch Manual


      David Young

[email protected]

*Revision History*
Revision 0.0.1	2003-02-10
Initial Draft
Revision 0.0.2	2003-03-14
Updated name to Bandersnatch because of naming conflict
Revision 0.0.3	2004-04-04
Added bandersnatch2.pl, a port for jabberd2

*Abstract*

Bandersnatch is tool to log Jabber instant messaging traffic, and to
generate meaningful usage statistics. Bandersnatch is designed for use
in a corporate intranet environment, by administrators who wish to
monitor the use / abuse of their Jabber servers.

------------------------------------------------------------------------

*Table of Contents*

1. Introduction <#introduction>
2. Quick-start <#quick_start>
3. Installing the jabber component <#install_component>
4. Installing the Bandersnatch PHP frontend <#install_frontend>
5. Usage <#usage>
6. Customizing <#customizing>
A. Jabberwocky - The poem <#poem>


    1. Introduction

1.1. History <#theory>
1.2. Copyright and License <#copyright>
1.3. Credits <#credits>
1.4. Disclaimer <#disclaimer>
1.5. Bug Reporting <#bugs_and_stuff>

Bandersnatch is intended to be a deterrent to corporate users abusing a
Jabber system for personal purposes. It is designed around the
"peer-policing" theory, which hypothesizes that: "/If an individual is
aware that their activities are publicly visible, they are likely to
limit their activities to the public standard/".

In other words, if your users know that their Jabber activity is logged,
and that their peers can see how many remote (personal?) messages
they've sent, they'll keep their behavior within reasonable boundaries.


      1.1. History

When I approached my company about implementing a Jabber system on our
intranet, the first issue they raised was "can we monitor / log it?",
and "how can we avoid abuse". Legitimate questions indeed. How to make
instant-messaging available to 500-odd users, yet deter them from
abusing the system.

At that time (and still today) Jabber had no built-in logging system. It
logged sessions (logon / logoff) and errors, and it was suggested that
parsing the debug output might yield some useful logs.

It became apparent that I'd need to present my company with a monitoring
system, before they sanctioned the installation of a Jabber server.

I initially installed "msglog", a perl-based component that uses
threading. After upgrading to perl 5.8.0 a few times, recompiling all my
perl modules, breaking AMaViS, Sympa, and Nagios, I eventually got
msglog working. Only to discover that it wasn't exactly what I wanted.

I'd previously installed Justin Mecham's Jogger, a jabber-based weblog.
It's a fairly straightforward perl script, that sends a few queries to a
database, and has a basic PHP frontend to view the blogs. It's a
beautiful example of simplicity that works 100%

I reasoned that if it were possible for msglog to receive all Jabber
traffic, then it must also be possible for Jogger to do so. Furthermore,
if I could modify Jogger to log this traffic into the database, I could
use any frontend to analyse the data.

Thus Bandersnatch was born :)


      1.2. Copyright and License

Bandersnatch is Copyright 2003 by David Young.

This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

Contact the author (David Young) by email: [email protected]
<mailto:[email protected]>


      1.3. Credits

The Bandersnatch component is heavily based on Jogger, the jabber-based
web blogger, by Justin Mecham. (http://jogger.jabber.org/about.php)

Bandersnatch, of course, comes from Lewis Carrol's book, /Through the
Looking-Glass and What Alice Found There, 1872 Appendix A, /Jabberwocky
- The poem/ <#poem>/


      1.4. Disclaimer

No liability for the contents of this document can be accepted. Use the
concepts, examples and information at your own risk. There may be errors
and inaccuracies, that could be damaging to your system. Proceed with
caution, and although this is highly unlikely, the author(s) do not take
any responsibility.

All copyrights are held by their by their respective owners, unless
specifically noted otherwise. Use of a term in this document should not
be regarded as affecting the validity of any trademark or service mark.
Naming of particular products or brands should not be seen as endorsements.

Bandersnatch is a tool to monitor, log, and intercept electronic
communications. In many countries, this is illegal. In many
corporations, users have to agree to and sign an "Internet Usage
Policy", in which they give consent for such monitoring to take place.
Be aware of any potential liabilities which you could incur by using
this software. Check the applicable privacy laws. The author(s) do not
take any responsibility for your use of this software.


      1.5. Bug Reporting

I'm fairly confident that Bandersnatch, and this document, contain bugs.
Hopefully they're not serious ones. Maybe they're cute. It's quite
normal, and part of the life-cycle of the software :) - If you find any
bugs, either email the author ([email protected]
<mailto:[email protected]>) or, preferable, log them on
Jabberstudio's excellent bug-tracking system at
http://www.jabberstudio.org/projects/Bandersnatch/bugs


    2. Quick-start

2.1. jabberd 1.4 <#d3e65>
2.2. jabberd 2 <#d3e88>


      2.1. jabberd 1.4

	Note

These quick-start instructions pertain to the jabber 1.4.x series, the
instructions for jabberd2 servers are in the following section.

If you're a seasoned jabber administrator, who knows their jabber.xml
file backwards, you may want to skip all the details below, and just go
ahead with the installation. Below are a few quick-start instructions to
get you going:

Add the following to the /<jsm>/ section of jabber.xml:

<archive>                                          
<service>bandersnatch.jabber.yourdomain.com</service> 
</archive>

<presence>                                                                                             
<bcc>[email protected]</bcc>
</presence>

Add the following to the /<service>/ section of jabber.xml:

<service id="bandersnatch.jabber.yourdomain.com">
	<accept>                  
		<ip>127.0.0.1</ip>
		<port>5526</port>
		<secret>bandersnatch</secret>
	</accept>          
	<host>bandersnatch.jabber.yourdomain.com</host>  
</service>

Edit the included config.xml to suit.

Create the mysql database

# mysql < bandersnatch.sql

Run the component:

# ./bandersnatch.pl config.xml

For the frontend, create an alias to Bandersnatch's frontend/htdocs:

<IfModule mod_alias.c>        #     

# Note that if you include a trailing blah blah blah...

Alias /logs "/usr/local/jabber/bandersnatch/frontend/htdocs"    

# More blah blah blah...

</IfModule>  # End of aliases.


      2.2. jabberd 2

	Note

These quick-start instructions pertain to the jabberd2 series ONLY

The setup for jabberd2 is rather different, but far simpler :) Make sure
you have a user defined in router-users.xml for bandersnatch:

 
<user>
      <name>bandersnatch.jabber.yourdomain.com</name>
      <secret>bandersnatch</secret>
</user> 
 

... and grant that user access to bind with the "log" option, in router.xml:

    
<acl type='log'>
        <user>bandersnatch.jabber.yourdomain.com</user>
</acl>  

Edit the included config.xml to suit. The default port has changed from
jabber 1.4.x, the port is now 5347. Make sure your component name is the
same as the username you defined in router-users.xml and router.xml.

Create the mysql database (only if it doesn't already exist!)

# mysql < bandersnatch.sql

Run the component:

# ./bandersnatch2.pl config.xml

For the frontend, create an alias to Bandersnatch's frontend/htdocs:

<IfModule mod_alias.c>        #     

# Note that if you include a trailing blah blah blah...

Alias /logs "/usr/local/jabber/bandersnatch/frontend/htdocs"    

# More blah blah blah...

</IfModule>  # End of aliases.


    3. Installing the jabber component

3.1. Prerequisites <#d3e116>
3.2. Jabber config file(s) <#d3e161>
3.3. Edit: config.xml <#d3e206>
3.4. MySQL Database <#d3e327>
3.5. Running the component <#d3e351>

The "non-quick-start" instructions start here :)

The jabber component (bandersnatch.pl) is a script that runs as a
"/component/" to the jabber server. Upon initialization, the component
connects to the server on a predefined port, and authenticates with a
predefined "secret".


      3.1. Prerequisites

In order to use the jabber component with jabberd 1.4.x, you'll need the
following:

    *

      A jabber server running either jabberd version 1.4.x
      (http://jabberd.jabberstudio.org/downloads/)

    *

      A DBI-compatible SQL server (currently only tested with MySQL)

    *

      Perl v 5.6.1 (http://www.cpan.org)

    *

      Perl module: Net::Jabber > 1.0024
      (http://search.cpan.org/author/REATMON/Net-Jabber-1.28/)

    *

      Perl module: XML::Stream 1.16
      (http://search.cpan.org/author/REATMON/XML-Stream-1.16/)

    *

      Perl module DBI (mysql)
      (http://search.cpan.org/author/TIMB/DBI-1.32/
      <http://search.cpan.org/author/TIMB/DBI-1.32>)

In order to use the jabber component with jabberd 2.x, you'll need the
following:

    *

      A jabber server running either jabberd version 1.4.x
      (http://jabberd.jabberstudio.org/downloads/)

    *

      A DBI-compatible SQL server (currently only tested with MySQL)

    *

      Perl v 5.6.1 (http://www.cpan.org)

    *

      Perl POE (http://poe.perl.org)

    *

      Perl module: XML::Stream 1.16
      (http://search.cpan.org/author/REATMON/XML-Stream-1.16/)

    *

      Perl module DBI (mysql)
      (http://search.cpan.org/author/TIMB/DBI-1.32/
      <http://search.cpan.org/author/TIMB/DBI-1.32>)

    *

      Perl module POE::Component::Jabber
      (http://www.jabberstudio.org/projects/pcj/project/view.php) PCJ is
      not yet available in a downloadable format, until such time as it
      is, you will need to download it from CVS.
      (http://www.jabberstudio.org/cvs.php)

Once you've downloaded the bandersnatch tarball, change to your jabber
root directory, and unpack the tarball. A subdirectory called
"bandersnatch" will be created.


      3.2. Jabber config file(s)


        3.2.1. Jabberd 1.4.x


          3.2.1.1. Edit: jabber.xml

jabber.xml is the file which configures your jabber server. You have to
define a "service" entry for the Bandersnatch component, so that the
server will accept a connection from the component. You'll also add some
lines which instruct the server to forward messages to the component for
logging.


          3.2.1.2. <jsm> section

The following six lines are how Bandersnatch obtains data to log. The
/<archive>/ tag instructs jabber to forward all messages to
Bandersnatch's component, and the /<bcc>/ tag instructs jabber to
forward all "presence" messages to Bandersnatch's JID.

<archive>                                          
<service>bandersnatch.jabber.yourdomain.com</service> 
</archive>

<presence>                                                                                             
<bcc>[email protected]</bcc>
</presence>

Insert the tags above (archive & bcc) into your jabber.xml, after the
</browse/> section, just before the end of the </jsm/> section (below),
and change the appropriate values for your site.

	blah blah blah ...end of <service/> examples -->          
</browse>      
			
## Add archive and bcc here! ##	
			
</jsm>        
	<!--      The following section dynamically loads the individual     
	 modules that make up the session manager. Remove or blah blah blah...  


          3.2.1.3. <service> section

The following is a service definition for Bandersnatch. Insert it into
the /<service>/ section of your jabber.xml (Between </service/> and
<//service/>), and change the appropriate values for your site.

<service id="bandersnatch.jabber.yourdomain.com">
	<accept>                  
		<ip>127.0.0.1</ip>
		<port>5526</port>
		<secret>bandersnatch</secret>
	</accept>          
	<host>bandersnatch.jabber.yourdomain.com</host>  
</service>


        3.2.2. Jabberd 2


          3.2.2.1. Edit: router-users.xml

The jabberd2 server is divided into several parts, each of which handle
a different function of the "jabber server". The part that we're
concerned about is the router, which is defined by the files below.


          3.2.2.2. router-users.xml

Before we can grant bandersnatch permission to connect to the jabber
server, we first have to define a "user", so that the router can
recognize and authenticate our connection. Your router-users.xml file
probably already has a default user in it. Add a user for bandersnatch
by adding the following lines:////

<user>
      <name>bandersnatch.jabber.yourdomain.com</name>
      <secret>bandersnatch</secret>
</user> 


          3.2.2.3. router.xml

Now that we have create a user for bandersnatch, we need to tell the
router that this component may bind with the "log" option, allowing it
to see all jabber traffic. Edit the router.xml file, and add the
following (it's probably already there in some format, but commented
out) to the /aci /section. (3 lines from the bottom, in my file) //////

<acl type='log'>
        <user>bandersnatch.jabber.yourdomain.com</user>
</acl>  					
					


      3.3. Edit: config.xml

Modify the included file config.xml. The file is divided into five
primary sections: /server/, /component/, /mysql/, /debug/, and /site/.
Change the following values where appropriate, or leave the default
options set.


        3.3.1. server

The server options define how the Bandersnatch component is going to
connect to the jabber server. The /<secret>/ and /<port>/ options can be
set to any arbitrary value, but they must correspond to the /<service>/
entry in jabber.xml above.

<config>
	<server>
		<connectiontype>tcpip</connectiontype>
		<hostname>localhost</hostname> 
		<port>5526</port>
		<secret>bandersnatch</secret>         
	</server>

    *

      hostname

      The hostname of your jabber server. This is the jabber server that
      the component will connect to. (/default: localhost/)

    *

      port

      The port on the server to which the component will connect.
      (/default: 5526 for jabber 1.4.x, and 5347 for jabberd2/).

    *

      secret

      The "secret" which the component will use to authenticate with the
      server. (/default: bandersnatch/).

    *

      connectiontype

      The type of connection which the component will establish to the
      server. (/default: tcpip/)


        3.3.2. component

	<component> 
		<name>[email protected]</name>
	</component>

    *

      name

      Bandersnatch's JID. When sending messages to users, this is the
      jabber address they will originate from. With jabberd2, this is
      also the username that bandersnatch uses to bind to the router.


        3.3.3. mysql

	<mysql>
		<server>localhost</server>
		<dbname>bandersnatch</dbname> 
		<username>bandersnatch</username>
		<password>bandersnatch</password>
	</mysql>

    *

      server

      The hostname of the mysql server that Bandersnatch will use.
      (/default: localhost/)

    *

      dbname

      The name of the database that Bandersnatch will use. (/default:
      bandersnatch/)

    *

      username

      The username that Bandersnatch will use to connect to the
      database. (/default: bandersnatch/)

    *

      password

      The password that Bandersnatch will use to connect to the
      database. (/default: bandersnatch/)


        3.3.4. debug

	<debug>                  
		<level>0</level>                  
		<file>stdout</file>          
	</debug>

    *

      level

      The level of debug verbosity that you want Bandersnatch to output
      (/default: 0/).

    *

      file

      The file to which Bandersnatch should dump its debug output. If
      this value is set to "/stdout/", the debug output will be written
      to stdout, and not logged anywhere. This is very useful when
      managing the jabber processes via daemontools, because multilog
      creates logfiles from stdout. (/default: stdout/)


        3.3.5. site

	<site>                  
		<local_server>jabber.yourdomain.com</local_server> 
		<local_domains>conference.jabber.yourdomain.com</local_domains> 
		<admin_jids>[email protected]</admin_jids> 
		<ignore_jids>[email protected]</ignore_jids> 
		<ignore_jids>headlines.jabber.yourdomain.com</ignore_jids>  
		<privacy>0</privacy>         
		<aggressive_presence>0</aggressive_presence>         		
	</site>  
</config>

    *

      local_server

      The full name of your local server. Bandersnatch will use this
      value to determine which messages are local vs. remote, and to
      determine whose presence changes to log. (We don't want to log
      presence for remote users!)

    *

      local_domains

      A list (you can use the tag more than once) of domains considered
      "/local/". For example, you might want messages involving
      /smtp.jabber.yourdomain.com/, and
      /conference.jabber.yourdomain.com/ to reflect as "/local/" in your
      stats. This list will automatically include the name of the local
      server (above).

    *

      admin_jids

      A list (you can use the tag more than once) of JID's that
      Bandersnatch should consider "admins". Normally, when a user sends
      a jabber message to Bandersnatch, they received their day's
      statistics in return. Administrators can retrieve more detailed
      statistics. (Currently (/v0.0.1/), administrators only receive a
      "/top 20 user list/")

    *

      ignore_jids

      A list (you can use the tag more than once) of JIDs that
      Bandersnatch should ignore. Bandersnatch will not log any messages
      sent to or from these JIDs. It's sometimes helpful to eliminate
      "noisy" services from your stats. Bandersnatch's own JID
      (/component--> name above/) will be automatically included in this
      list.

    *

      privacy

      Your preferred privacy mode. (Section 6.1.1, ?Privacy? <#privacy>)
      Acceptable values range from 0 to 3. (default: 0)

    *

      aggressive_presence

      Enable or disable aggressive presence. (Section 6.1.2, ?Aggressive
      Presence? <#aggressive_presence>) Acceptable values are 0 and 1.
      (default: 0)


      3.4. MySQL Database

Create the required MySQL database and user accounts. Create the
database structure by importing bandersnatch.sql.

# mysql < bandersnatch.sql

Bandersnatch's database consists of four tables. The following briefly
describes each table.

    *

      message

      All messages are logged into this table. The message_timestamp
      field automatically "timestamps" the record when it is inserted.
      Records are never deleted or updated in this table, so it will
      continue to grow in size. Future versions will include "archiving"
      scripts to delete any logs older than a given period. Indexes are
      created on message_from, message_to, and message_timestamp.

    *

      presence

      All presence changes are logged into this table. The
      presence_timestamp field automatically "timestamps" the record
      when it is inserted. Records are never deleted or updated in this
      table, so it will continue to grow in size. Future versions will
      include "archiving" scripts to delete any logs older than a given
      period. An index is created on presence_timestamp.

    *

      user

      The user table is used to keep track of which users' current
      status, and which users are subscribed to Bandersnatch's presence.
      All the users in the table are reset to "offline" every time
      Bandersnatch starts, and are updated to "online" whenever they
      send a message. New records are only inserted when they don't
      exist, and this table will never be larger than your total amount
      of users.

    *

      auth

      This table is only used by Bandersnatch's PHP frontend, to
      determine which users are allowed to login as "admin", and read
      message logs. Bandersnatch has no functionality to manipulate this
      table, it must be edited via a SQL interface. (phpMyAdmin -
      http://www.phpmyadmin.net/).


      3.5. Running the component


        3.5.1. Jabberd 1.4.x

Start Bandersnatch by running *bandersnatch*, and passing the
/config.xml/ as a command-line argument:

# ./bandersnatch config.xml


        3.5.2. Jabberd 2.x

Start Bandersnatch by running *bandersnatch2.pl*, and passing the
/config.xml/ as a command-line argument:

# ./bandersnatch2.pl config.xml


    4. Installing the Bandersnatch PHP frontend

4.1. Prerequisites <#d3e368>
4.2. Edit: config.inc.php <#d3e382>
4.3. Installation <#d3e446>

The PHP frontend is an optional interface to Bandersnatch's logs. I.e.:
You don't need the frontend to run Bandersnatch. That said, of course
you should use it. The whole purpose of Bandersnatch is to provide
well-presented, useful statistics, and that's exactly what the frontend
does :)


      4.1. Prerequisites

In order to use the jabber component, you'll need the following:

    *

      PHP 4

    *

      PEAR DB 1.3 (included with PHP 4.3.0)

    *

      PEAR HTML_Template_IT 1.0.0

    *

      PEAR Auth 1.1.1

Instructions on downloading / installing PEAR libraries can be found at
http://pear.php.net/manual/en/installation.php


      4.2. Edit: config.inc.php

Edit the includes/config.inc.php file, and set the following variables
to suit your site:

$config['template'] 		= 'default.tpl.htm';
$config['limit'] 		= '50';

$config['database_type'] 	= 'mysql';
$config['database_host'] 	= 'localhost';
$config['database_table'] 	= 'bandersnatch';
$config['database_user'] 	= 'bandersnatch';
$config['database_password'] 	= 'bandersnatch';

$config['local_server'] 	= "jabber.yourdomain.com";
$config['local_domains']	= array(
		'jabber.yourdomain.com',
		'conference.jabber.yourdomain.com');
									
$config['local_transports'] = array(
		'msn' 		=> 'msn.jabber.yourdomain.com',
		'icq' 		=> 'icq.jabber.yourdomain.com',
		'aim' 		=> 'aim.jabber.yourdomain.com',
		'yahoo' 	=> 'yahoo.jabber.yourdomain.com',
		'rss' 		=> 'headlines.jabber.yourdomain.com',
		'groupchat' 	=> 'conference.jabber.yourdomain.com');
			

    *

      $config['template']

      The filename of the template to use. (/default: /default.tpl.htm)

    *

      $config['limit']

      The limit to the amount of records to display per page. Currently
      this affects the user list, and message logs. (/default: 50/)

    *

      $config['database_type']

      The type of database that Bandersnatch is running on. This
      variable is used to construct the PEAR DB DSN, so any PEAR
      DB-compatible database type should work. Thus far Bandersnatch has
      only been tested on MySQL. (/default: mysql/)

    *

      $config['database_host']

      The hostname of the server on which Bandersnatch's database is
      running. (/default: localhost/)

    *

      $config['database_table']

      The name of Bandersnatch's database. (/default: bandersnatch/)

    *

      $config['database_user']

      The username to use to connect to the database. (/default:
      bandersnatch/)

    *

      $config['database_password']

      The password to use to connect to the database. (/default:
      bandersnatch/)

    *

      $config['local_server']

      The name of your local jabber server. This is the server name
      which will be displayed on the Bandersnatch front page.

    *

      $config['local_domains']

      An array of domains which, for the purposes of statistics, should
      be considered "local". For example, you might want messages to and
      from /smtp.jabber.yourdomain.com/, and
      /conference.jabber.yourdomain.com/ to reflect as "/local/" in your
      stats. This list will automatically include
      $config['local_server'] (above).

    *

      $config['local_transports']

      An associative array of transports installed on your server. The
      array is in the format /transport type/ => /transport hostname/.
      Remove any transports which you do not have installed. Currently
      available transports are /msn/, /icq/, /aim/, /yahoo/, /rss /and
      /groupchat/. To add another transport type, simply add key-value
      pair, and update the template file accordingly.


      4.3. Installation

To make the frontend accessible via the web, create an alias to
Bandersnatch/frontend/html:

Apache example (httpd.conf):

<IfModule mod_alias.c>        #     

# Note that if you include a trailing blah blah blah...

Alias /logs "/usr/local/jabber/bandersnatch/frontend/htdocs"    

# More blah blah blah...

</IfModule>  # End of aliases.


    5. Usage

5.1. Querying the component <#d3e456>
5.2. Querying the frontend <#d3e460>
5.3. Admin login <#d3e471>

Bandersnatch's statistics can be queried either via the component,
within jabber, or with the frontend.


      5.1. Querying the component

If you send a message to Bandersnatch's JID, Bandersnatch will return
your usage stats for the day. If your JID is set as an "admin" (in
/config.xml/), Bandersnatch will return the top 20 local and remote
users for the day.


      5.2. Querying the frontend

Bandersnatch's frontend is the recommended method of viewing statistics.
Simply load the frontend to view the stats.

Bandersnatch's "home" page displays a message summary (/total local and
remote messages for the day/), a transport summary (/messages sent and
received by each transport/), and a user list. The user list can be
sorted alphabetically by JID, or (default) by user activity.

Clicking on a user's JID (/[email protected]/) will bring up
that user's stats, combining all their resources. Clicking on a user's
resource (/example: /Just Another Jabber Client/) will bring up the
"user stats" for that user with that specific resource.

You can view the jabber activity for previous days by selecting a date
from the drop down list, entitled "Stats on:".

In order to view "user message logs", you must be logged in as an admin..


      5.3. Admin login

To log in as an administrator, you must have a username / password
record in the "auth" table in Bandersnatch's database. The password
field must be MD5 encrypted.

The default username / password combination is /admin / 2bchanged/

Insert or update fields in the "auth" table using a SQL tool
(/phpMyAdmin - http://www.phpmyadmin.net//) or by manually running mysql:

#* mysql -u localhost bandersnatch -u bandersnatch -p*
Enter password:

Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1787 to server version: 3.23.51

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> INSERT INTO `auth` ( `username` , `PASSWORD` ) 
    -> VALUES ('admin', MD5( '2bchanged' )) ;

Query OK, 1 row affected (0.00 sec)

mysql> quit   


    6. Customizing

6.1. Component <#d3e484>
6.2. Frontend <#customizing_frontend>

You can customize Bandersnatch either by changing the behaviour of the
component (choosing which messages to log, masking private messages,
etc.), or by changing the "look & feel" of the frontend (Changing the
fonts, inserting a company logo, etc.)


      6.1. Component

The options ignore_jids, admin_jids, and local_domains have been
explained above. The /privacy /and /aggressive_presence/ warrant some
extra explanation.


        6.1.1. Privacy

Bandersnatch supports varying degrees of privacy. You may feel that you
don't want to record remote usernames, or that you don't want to record
any messages at all, but still collect statistics. Set your desired
privacy mode in config.xml, using the <privacy> tag.

    *

      Level 3

      Remote usernames will be "masked out" and all message bodies will
      be masked out.

    *

      Level 2

      Remote usernames will be "masked out" and all remote message
      bodies will be masked out. Local-to-local message bodies will
      still be logged.

    *

      Level 1

      Remote usernames will be "masked out". All message bodies will
      still be logged.

    *

      Level 0

      No masking. Default level


        6.1.2. Aggressive Presence

Unless Bandersnatch is subscribed to a user's presence (and authorized),
it will only receive online / offline presence notifications via
Jabber's bcc. In order for Bandersnatch to log every change of status
(away, chat, DND), it must be subscribed to the user's presence.

If aggressive presence is enabled, every time a local user sends a
message, Bandersnatch will check to see if it is subscribed to that
user. If not, it will send a "subscribe" presence, requesting
subscription. If it is subscribed, it will send a standard "available"
presence.

Unless a user blacklists Bandersnatch, they will continue to receive
subscription requests until they authorize subscription.

If aggressive presence is disabled, Bandersnatch will only subscribe to
a user's presence if the user requests a subscription.


      6.2. Frontend

Bandersnatch's frontend is based entirely on templates. The default
template file (default.tpl.htm) is well documented. To create your own
template, make a copy of default.tpl.htm, and edit the
$config['template'] value in config.inc.php


    A. Jabberwocky - The poem

JABBERWOCKY
Lewis Carroll
(from Through the Looking-Glass and What Alice Found There, 1872) 

`Twas brillig, and the slithy toves
  Did gyre and gimble in the wabe:
All mimsy were the borogoves,
  And the mome raths outgrabe.

"Beware the Jabberwock, my son!
  The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
  The frumious Bandersnatch!"

He took his vorpal sword in hand:
  Long time the manxome foe he sought --
So rested he by the Tumtum tree,
  And stood awhile in thought.

And, as in uffish thought he stood,
  The Jabberwock, with eyes of flame,
Came whiffling through the tulgey wood,
  And burbled as it came!

One, two! One, two! And through and through
  The vorpal blade went snicker-snack!
He left it dead, and with its head
  He went galumphing back.

"And, has thou slain the Jabberwock?
  Come to my arms, my beamish boy!
O frabjous day! Callooh! Callay!'
  He chortled in his joy.

`Twas brillig, and the slithy toves
  Did gyre and gimble in the wabe;
All mimsy were the borogoves,
  And the mome raths outgrabe

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