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85 lines
2.7 KiB
Lua
85 lines
2.7 KiB
Lua
--
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-- (C) 2019-20 - ntop.org
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--
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-- ##############################################
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local alert_keys = require "alert_keys"
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package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
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local status_keys = require "flow_keys"
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-- Import the classes library.
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local classes = require "classes"
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-- Make sure to import the Superclass!
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local alert = require "alert"
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-- ##############################################
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local alert_external = classes.class(alert)
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-- ##############################################
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alert_external.meta = {
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status_key = status_keys.ntopng.status_external_alert,
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alert_key = alert_keys.ntopng.alert_external,
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i18n_title = "alerts_dashboard.external_alert",
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icon = "fas fa-eye",
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}
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-- ##############################################
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-- @brief Prepare an alert table used to generate the alert
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-- @param alert_severity A severity as defined in `alert_severities`
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-- @param info A generic table decoded from a JSON originated at the external alert source
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-- @return A table with the alert built
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function alert_external:init(info)
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-- Call the parent constructor
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self.super:init()
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self.alert_type_params = info
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end
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-- #######################################################
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local function formatIDSAlert(alert)
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local signature = (alert and alert.signature)
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local category = (alert and alert.category)
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local signature_info = (signature and signature:split(" "));
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local maker = (signature_info and table.remove(signature_info, 1))
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local scope = (signature_info and table.remove(signature_info, 1))
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local msg = (signature_info and table.concat(signature_info, " "))
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if maker and alert_consts.ids_rule_maker[maker] then
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maker = alert_consts.ids_rule_maker[maker]
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end
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return i18n("flow_details.ids_alert", { scope=scope, msg=msg, maker=maker })
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end
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-- #######################################################
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-- @brief Format an alert into a human-readable string
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-- @param ifid The integer interface id of the generated alert
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-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
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-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
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-- @return A human-readable string
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function alert_external.format(flowstatus_info)
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local res = i18n("alerts_dashboard.external_alert")
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if not flowstatus_info then
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return res
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end
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-- Available fields:
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-- flowstatus_info.source (e.g. suricata)
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-- flowstatus_info.severity_id (custom severity)
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-- flowstatus_info.alert (alert metadata)
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if flowstatus_info.source == "suricata" then
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res = formatIDSAlert(flowstatus_info.alert)
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end
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return res
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end
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-- #######################################################
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return alert_external
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