Provided by: jabber-querybot_0.1.0-1_all 
NAME
jabber-querybot - a modular perl jabber bot
DESCRIPTION
jabber-querybot connects a jabber account and wait for messages. If a message comes in, it forward it to
your self programmend modul. The return string of your module, jabber-querybot send it back to the jabber
sender.
It is designed to be re-usable and to make it easy to write small Jabber bots that do one thing and do it
well. A simple concept with a lot of examples and experiences are implemented.
1. Create a jabber account on a jabber-server around
2. Create a bot application:
cd examples
cp Querymodule.pm /etc/jabber-querybot/Mybot.pm
cd /etc/jabber-querybot
ln -s Mybot.pm Querymodule.pm
Modify login parameters to your jabber-bot-account
vim Mybot.pm
our $hostname = "swissjabber.ch";
our $user = "";
our $password = "";
our $ident = "Testbot";
our $bot_admin = "\@swissjabber.ch";
our $port = "5222";
our $timeout = "5";
our $service_name = "$user\@$hostname";
our $bot_description = "Bot help title
Bot description";
For each jabber message, jabber-querybot will execute sub run_query, that you can write here your
application.
You can control how your jabber response will be:
• error = error message stanza
• presence = error as presence stanza
• ignore = ignore message
OPTIONS
jabber-querybot has a lot of variables which you can easy modify for what you need:
querystatus
$querystatus = [ 0 | 1 ]
• 0 = Bot will not proceed any incoming jabber messages.
• 1 = Bot will proceed incoming messages.
penalty_status
If the bot has too much workload, it goes to penalty status and wait some time until his status change
back to normal.
$timer_reconnect_default = 21600
Every 21600 seconds (6 hours) the bot will shutdown automatically, wait 10 seconds and starting up again.
$timer_auto_query = 0
If you set in your module this variable to 60, the bot will every 60 seconds call the function
run_auto_query() which you may use for several things.
System load
If your systems load is >=6, this bot will shutdown the jabber connection and check every 10 seconds
systems load. If load <=2, bot will start over.
EXAMPLES
/usr/share/doc/jabber-querybot/examples/Testbot.pm
FILES
/etc/jabber-querybot/Querymodule.pm
/usr/bin/jabber-querybot
RESOURCES
http://github.com/micressor/jabber-querybot/
METHODS
InMessage()
An incoming jabber message to the bot will hook this function.
• Read parameters of incoming stanza
• Decode utf8 string
• increment timer overload and do not process message if bot is overloaded.
• Ignore message if it is from myself
• Be sure, that it is not a message from another transport
• Check any systemcommands for the bot
• If the bot has sleeping status, change it to work
• We process only normal text or chat type jabber messages
• And now we give the real text string which was incoming to the bot via run_query().
• If run_query() say us 'ignore` we do a log entry and do not answer via jabber to the user.
• If run_query() says 'error` we send a jabber error stanza wiht the status message from run_query() back
to the user.
• If there was no error, we update the statistic vars and send the answer from run_query() back to the
jabber user.
connect_server()
This function connects to the jabber server with the given credentials from Querymodule.pm.
Set the call back functions. This functions will be executed if a message of the types <message/> <iq/>
or <presence/> are incoming.
Stop()
Shutdown jabber connection and exit main program
disconnect_server()
Only disconnect from the jabber-server.
reconnect_server()
Reconnect and create a log entry.
InIQ()
We do not proceed any iq (information query), this is only for statisic.
InPresence()
• Increment timer overload
• Do not process message if we are overloaded penalty_handler().
We have a problem in Net::Jabber. An incoming message with a ` in resource blocks the bot. We will hotfix
that for the moment.
A subscription type `subscribe` is incoming. Send `subscribed` tho the user and say hello ;)
• Send presence to user
• Remove subscription if a user remove this bot from his roster
sendPresence()
Send presence information to user
systemcommands()
• If user type '!help` send a help instruction to the user
• Send statistic information to the user if he types '!status`
• Is it a bot command?
• Is the bot command from the bot admin? If not, send "not allowed"
• '!shutdown` will shutdown your bot via jabber invoke.
• '!query off` turn off queries
• '!query on` turn on queries
get_barejid()
Remove resource id from a jabber id.
calcualte_stats()
Calculate message statistics
jabber_set_presence()
Set new presence if we have another presence status or we have set the force flag (for transport
presence).
jabber_send_message()
This function send all jabber messages which are outgoing from the jabber-querybot.
set_wakeup_mode()
Set jabber presence via jabber_set_presence()
penalty_handler()
This function checks if the bot is overloaded with incoming mesages and reject if it is. Two times that's
ok so 2:1 because while in main.
Bot admin got everytime an answer.
jabber_add_footer()
Add footer to the processed message.
calcualte_elapsed_time()
Calculate elapsed worktime for a query
sendError()
sendError($message, $from, $to, 404, "text");
system_load_check()
• Calculate system load
• If load is too high shutdown bot.
• If load is ok, starting up bot
connect_bot()
Connect bot and initialize all timers.
check_before_start()
Check configuration variables in Querybotmodule.pm and give answer if anything does not match or is
missing.
COPYRIGHT AND LICENSE
Copyright (C) 2009-2012 Marco Balmer <marco@balmer.name>
The Debian packaging is licensed under the GPL, see `/usr/share/common-licenses/GPL-3'.
perl v5.14.2 2012-02-03 JABBER-QUERYBOT(1p)