Implements flow callbacks and alerts in C++

scripts/lua/modules/alert_definitions/alert_iec_invalid_transition.lua

@@ -0,0 +1,70 @@
+--
+-- (C) 2019-21 - ntop.org
+--
+
+-- ##############################################
+
+local alert_keys = require "alert_keys"
+local json = require "dkjson"
+local format_utils = require "format_utils"
+-- Import the classes library.
+local classes = require "classes"
+-- Make sure to import the Superclass!
+local alert = require "alert"
+
+
+-- ##############################################
+
+local alert_iec_invalid_transition = classes.class(alert)
+
+-- ##############################################
+
+alert_iec_invalid_transition.meta = {
+   alert_key = alert_keys.ntopng.alert_iec_invalid_transition,
+   i18n_title = "alerts_dashboard.iec_invalid_transition",
+   icon = "fas fa-subway",
+}
+
+-- ##############################################
+
+-- @brief Prepare an alert table used to generate the alert
+-- @param last_error A string with the lastest influxdb error
+-- @return A table with the alert built
+function alert_iec_invalid_transition:init()
+   -- Call the parent constructor
+   self.super:init()
+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 alert_iec_invalid_transition.format(ifid, alert, alert_type_params)
+   local msg = json.decode(alert_type_params.error_msg)
+   local vlanId = alert.vlanId or 0
+   local client = ip2label(msg.client.ip, msg.vlanId)
+   local server = ip2label(msg.server.ip, msg.vlanId)
+
+   local rsp = format_utils.formatEpoch(msg.timestamp)..": " ..
+      "<A HREF=\""..hostinfo2detailsurl(client) .."\">".. msg.client.ip .."</A>"..
+      " <i class=\"fas fa-exchange-alt fa-lg\" aria-hidden=\"true\" data-original-title=\"\" title=\"\"></i>" ..
+      "<A HREF=\""..hostinfo2detailsurl(server) .."\">".. msg.server.ip .."</A>"..
+      " [CauseTX: "..msg.cause_tx.."][TypeId: "..msg.type_id.."][ASDU: ".. msg.asdu.."][Negative: "
+
+   if(msg.negatiive == false) then
+      rsp = rsp .. "True]"
+   else
+      rsp = rsp .. "False]"
+   end
+   
+   -- tprint(rsp)
+   
+   return(rsp)
+end
+
+-- #######################################################
+
+return alert_iec_invalid_transition