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-- Gemeinschaft 5 module: perimeter defense event handler class
-- (c) AMOOMA GmbH 2013
--
module(...,package.seeall)
function handler_class()
return PerimeterDefense
end
PerimeterDefense = {}
function PerimeterDefense.new(self, arg)
arg = arg or {}
object = arg.object or {}
setmetatable(object, self);
self.__index = self;
self.log = arg.log;
self.class = 'perimeterdefense'
self.database = arg.database;
self.domain = arg.domain;
require 'common.perimeter';
self.perimeter = common.perimeter.Perimeter:new(arg);
self.perimeter:setup();
return object;
end
function PerimeterDefense.event_handlers(self)
return {
CUSTOM = {
['sofia::pre_register'] = self.sofia_pre_register,
['sofia::register_attempt'] = self.sofia_register_attempt,
['sofia::register_failure'] = self.sofia_register_failure,
['perimeter::control'] = self.perimeter_control,
},
CHANNEL_HANGUP = { [true] = self.channel_hangup },
};
end
function PerimeterDefense.to_register_record(self, event, class)
return {
action = 'register',
class = class,
key = event:getHeader('network-ip'),
sequence = tonumber(event:getHeader('Event-Sequence')),
timestamp = tonumber(event:getHeader('Event-Date-Timestamp')),
received_ip = event:getHeader('network-ip'),
received_port = event:getHeader('network-port'),
from_user = event:getHeader('from-user'),
from_host = event:getHeader('from-host'),
to_user = event:getHeader('to-user'),
to_host = event:getHeader('to-host'),
user_agent = event:getHeader('user-agent'),
username = event:getHeader('username'),
realm = event:getHeader('realm'),
auth_result = event:getHeader('auth-result'),
contact = event:getHeader('contact'),
};
end
function PerimeterDefense.to_call_record(self, event, class)
return {
action = 'call',
class = class,
key = event:getHeader('Caller-Network-Addr'),
sequence = tonumber(event:getHeader('Event-Sequence')),
timestamp = tonumber(event:getHeader('Event-Date-Timestamp')),
received_ip = event:getHeader('Caller-Network-Addr'),
received_port = event:getHeader('variable_sip_network_port'),
hangup_cause = event:getHeader('Hangup-Cause'),
endpoint_disposition = event:getHeader('variable_endpoint_disposition'),
direction = event:getHeader('Call-Direction'),
destination_number = event:getHeader('Caller-Destination-Number');
caller_id_name = event:getHeader('Caller-Caller-ID-Name');
caller_id_number = event:getHeader('Caller-Caller-ID-Number');
from_user = event:getHeader('variable_sip_from_user'),
from_host = event:getHeader('variable_sip_from_host'),
to_user = event:getHeader('variable_sip_to_user'),
to_host = event:getHeader('variable_sip_to_host'),
req_user = event:getHeader('variable_sip_req_user'),
req_host = event:getHeader('variable_sip_req_host'),
user_agent = event:getHeader('variable_sip_user_agent'),
username = event:getHeader('Caller-Username'),
contact = event:getHeader('variable_sip_contact_uri'),
};
end
function PerimeterDefense.sofia_pre_register(self, event)
local record = self:to_register_record(event, 'pre_register');
self.perimeter:check(record);
end
function PerimeterDefense.sofia_register_attempt(self, event)
local record = self:to_register_record(event, 'register_attempt');
self.perimeter:check(record);
end
function PerimeterDefense.sofia_register_failure(self, event)
local record = self:to_register_record(event, 'register_failure');
self.perimeter:check(record);
end
function PerimeterDefense.channel_hangup(self, event)
local record = self:to_call_record(event, 'channel_hangup');
self.perimeter:check(record);
end
function PerimeterDefense.control_to_action(self, event)
return {
key = event:getHeader('key'),
};
end
function PerimeterDefense.perimeter_control(self, event)
local action = event:getHeader('action');
if self.perimeter['action_' .. action] then
self.perimeter['action_' .. action](self.perimeter, self:control_to_action(event))
else
self.log:error('[perimeter_defense] PERIMETER_DEFENSE - could not execute action: ', action);
end
end
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