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--
-- (C) 2019-20 - ntop.org
--
local flow_alert_keys = require "flow_alert_keys"
-- Import the classes library.
local classes = require "classes"
-- Make sure to import the Superclass!
local alert = require "alert"
-- ##############################################
local external_alert = classes.class(alert)
-- ##############################################
external_alert.meta = {
alert_key = flow_alert_keys.flow_alert_external,
i18n_title = "alerts_dashboard.external_alert",
icon = "fas fa-fw fa-eye",
status_keep_increasing_scores = true, -- Every time an external alert is set, scores are increased accordingly
}
-- #######################################################
-- @brief Prepare an alert table used to generate the alert
-- @param info A generic table decoded from a JSON originated at the external alert source
-- @return A table with the alert built
function external_alert:init()
-- Call the parent constructor
self.super:init()
end
-- #######################################################
local function formatIDSAlert(alert)
local alert_consts = require "alert_consts"
local signature = (alert and alert.signature)
local category = (alert and alert.category)
local signature_info = (signature and signature:split(" "));
local maker = (signature_info and table.remove(signature_info, 1))
local scope = (signature_info and table.remove(signature_info, 1))
local msg = (signature_info and table.concat(signature_info, " "))
if maker and alert_consts.ids_rule_maker[maker] then
maker = alert_consts.ids_rule_maker[maker]
end
return i18n("flow_details.ids_alert", { scope=scope, msg=msg, maker=maker })
end
-- #######################################################
function external_alert.format(ifid, alert, alert_type_params)
local res = i18n("alerts_dashboard.external_alert")
if not alert_type_params then
return res
end
-- Available fields:
-- alert_type_params.source (e.g. suricata)
-- alert_type_params.alert (alert metadata)
if alert_type_params.source == "suricata" then
res = formatIDSAlert(alert_type_params.alert)
end
return res
end
-- #######################################################
return external_alert
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