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--
-- (C) 2019-22 - ntop.org
--
-- ##############################################
local host_alert_keys = require "host_alert_keys"
local json = require("dkjson")
local alert_creators = require "alert_creators"
-- Import the classes library.
local classes = require "classes"
-- Make sure to import the Superclass!
local alert = require "alert"
-- ##############################################
local host_alert_p2p_traffic = classes.class(alert)
-- ##############################################
host_alert_p2p_traffic.meta = {
alert_key = host_alert_keys.host_alert_p2p_traffic,
i18n_title = "alerts_dashboard.host_alert_p2p_traffic",
icon = "fas fa-fw fa-arrow-circle-up",
}
-- ##############################################
-- @brief Prepare an alert table used to generate the alert
-- @param metric Same as `alert_subtype`
-- @param value A number indicating the measure which crossed the threshold
-- @param operator A string indicating the operator used when evaluating the threshold, one of "gt", ">", "<"
-- @param threshold A number indicating the threshold compared with `value` using operator
-- @return A table with the alert built
function host_alert_p2p_traffic:init(metric, value, operator, threshold)
-- Call the parent constructor
self.super:init()
self.alert_type_params = alert_creators.createThresholdCross(metric, value, operator, threshold)
end
-- #######################################################
-- @brief Format an alert into a human-readable string
-- @param ifid The integer interface id of the generated alert
-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
-- @return A human-readable string
function host_alert_p2p_traffic.format(ifid, alert, alert_type_params)
local alert_consts = require("alert_consts")
local entity = alert_consts.formatHostAlert(ifid, alert["ip"], alert["vlan_id"])
return i18n("alert_messages.host_alert_p2p_traffic", {
entity = entity,
value = string.format("%u", math.ceil(alert_type_params.value)),
op = "&".. (alert_type_params.operator or "gt") ..";",
threshold = alert_type_params.threshold,
})
end
-- #######################################################
-- @brief Prepare a table containing a set of filters useful to query historical flows that contributed to the generation of this alert
-- @param ifid The integer interface id of the generated alert
-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
-- @return A human-readable string
function host_alert_p2p_traffic.filter_to_past_flows(ifid, alert, alert_type_params)
local res = {}
local host_key = hostinfo2hostkey({ip = alert["ip"], vlan = alert["vlan_id"]})
-- Look for the IP both as client and as server as the alert does not differentiate
res["ip"] = host_key
-- Category FileSharing, not just a single protocol
res["l7cat"] = "FileSharing"
return res
end
-- #######################################################
return host_alert_p2p_traffic
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