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--
-- (C) 2013-22 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local alert_utils = require "alert_utils"
local json = require("dkjson")
local ts_utils = require("ts_utils_core")
local plugins_utils = require("plugins_utils")
local periodic_activities_utils = require "periodic_activities_utils"
local cpu_utils = require("cpu_utils")
sendHTTPHeader('application/json')
local callback_utils = require("callback_utils")
local recording_utils = require("recording_utils")
local alert_consts = require("alert_consts")
local function userHasRestrictions()
local allowed_nets = ntop.getPref("ntopng.user." .. (_SESSION["user"] or "") .. ".allowed_nets")
for _, net in pairs(split(allowed_nets, ",")) do
if not isEmptyString(net) and net ~= "0.0.0.0/0" and net ~= "::/0" then
return true
end
end
return false
end
local function countHosts()
local res = {
local_hosts = 0,
hosts = 0,
}
for host, info in callback_utils.getHostsIterator(false --[[no details]]) do
if info.localhost then
res.local_hosts = res.local_hosts + 1
end
res.hosts = res.hosts + 1
end
return res
end
function dumpInterfaceStats(ifid)
local interface_name = getInterfaceName(ifid)
interface.select(ifid..'')
local ifstats = interface.getStats()
local res = {}
if(ifstats ~= nil) then
local uptime = ntop.getUptime()
local prefs = ntop.getPrefs()
-- Round up
local hosts_pctg = math.floor(1+((ifstats.stats.hosts*100)/prefs.max_num_hosts))
local flows_pctg = math.floor(1+((ifstats.stats.flows*100)/prefs.max_num_flows))
local macs_pctg = math.floor(1+((ifstats.stats.current_macs*100)/prefs.max_num_hosts))
res["ifid"] = ifid
res["ifname"] = interface_name
res["speed"] = getInterfaceSpeed(ifstats.id)
res["periodic_stats_update_frequency_secs"] = ifstats.periodic_stats_update_frequency_secs
-- network load is used by web pages that are shown to the user
-- so we must return statistics since the latest (possible) reset
res["packets"] = ifstats.stats_since_reset.packets
res["bytes"] = ifstats.stats_since_reset.bytes
res["drops"] = ifstats.stats_since_reset.drops
if ifstats.stats_since_reset.discarded_probing_packets then
res["discarded_probing_packets"] = ifstats.stats_since_reset.discarded_probing_packets
res["discarded_probing_bytes"] = ifstats.stats_since_reset.discarded_probing_bytes
end
res["throughput_bps"] = ifstats.stats.throughput_bps;
res["throughput_pps"] = ifstats.stats.throughput_pps;
if prefs.is_dump_flows_enabled == true then
res["flow_export_drops"] = ifstats.stats_since_reset.flow_export_drops
res["flow_export_rate"] = ifstats.stats_since_reset.flow_export_rate
res["flow_export_count"] = ifstats.stats_since_reset.flow_export_count
end
if prefs.are_alerts_enabled == true then
res["engaged_alerts"] = ifstats["num_alerts_engaged"] or 0
res["dropped_alerts"] = ifstats["num_dropped_alerts"] or 0
res["alerted_flows"] = ifstats["num_alerted_flows"] or 0
end
if periodic_activities_utils.have_degraded_performance() then
res["degraded_performance"] = true
end
if not userHasRestrictions() then
res["num_flows"] = ifstats.stats.flows
res["num_hosts"] = ifstats.stats.hosts
res["num_local_hosts"] = ifstats.stats.local_hosts
res["num_devices"] = ifstats.stats.devices
else
local num_hosts = countHosts()
res["num_hosts"] = num_hosts.hosts
res["num_local_hosts"] = num_hosts.local_hosts
end
res["epoch"] = os.time()
res["localtime"] = os.date("%H:%M:%S %z", res["epoch"])
res["uptime"] = secondsToTime(uptime)
if ntop.isPro() then
local product_info = ntop.getInfo(true)
if product_info["pro.out_of_maintenance"] then
res["out_of_maintenance"] = true
end
end
res["system_host_stats"] = cpu_utils.systemHostStats()
res["hosts_pctg"] = hosts_pctg
res["flows_pctg"] = flows_pctg
res["macs_pctg"] = macs_pctg
res["remote_pps"] = ifstats.remote_pps
res["remote_bps"] = ifstats.remote_bps
res["is_view"] = ifstats.isView
if isAdministrator() then
res["num_live_captures"] = ifstats.stats.num_live_captures
end
res["local2remote"] = ifstats["localstats"]["bytes"]["local2remote"]
res["remote2local"] = ifstats["localstats"]["bytes"]["remote2local"]
res["bytes_upload"] = ifstats["eth"]["egress"]["bytes"]
res["bytes_download"] = ifstats["eth"]["ingress"]["bytes"]
res["packets_upload"] = ifstats["eth"]["egress"]["packets"]
res["packets_download"] = ifstats["eth"]["ingress"]["packets"]
local ingress_thpt = ifstats["eth"]["ingress"]["throughput"]
local egress_thpt = ifstats["eth"]["egress"]["throughput"]
res["throughput"] = {
download = {
bps = ingress_thpt["bps"], bps_trend = ingress_thpt["bps_trend"],
pps = ingress_thpt["pps"], pps_trend = ingress_thpt["pps_trend"]
},
upload = {
bps = egress_thpt["bps"], bps_trend = egress_thpt["bps_trend"],
pps = egress_thpt["pps"], pps_trend = egress_thpt["pps_trend"]
},
}
if ntop.isnEdge() and ifstats.type == "netfilter" and ifstats.netfilter then
res["netfilter"] = ifstats.netfilter
end
if(ifstats.zmqRecvStats ~= nil) then
if ifstats.zmqRecvStats_since_reset then
-- override stats with the values calculated from the latest user reset
-- for consistency with if_stats.lua
for k, v in pairs(ifstats.zmqRecvStats_since_reset) do
ifstats.zmqRecvStats[k] = v
end
end
res["zmqRecvStats"] = {}
res["zmqRecvStats"]["flows"] = ifstats.zmqRecvStats.flows
res["zmqRecvStats"]["events"] = ifstats.zmqRecvStats.events
res["zmqRecvStats"]["counters"] = ifstats.zmqRecvStats.counters
res["zmqRecvStats"]["zmq_msg_rcvd"] = ifstats.zmqRecvStats.zmq_msg_rcvd
res["zmqRecvStats"]["zmq_msg_drops"] = ifstats.zmqRecvStats.zmq_msg_drops
res["zmqRecvStats"]["zmq_avg_msg_flows"] = math.max(1, ifstats.zmqRecvStats.flows / (ifstats.zmqRecvStats.zmq_msg_rcvd + 1))
res["zmq.num_flow_exports"] = ifstats["zmq.num_flow_exports"] or 0
res["zmq.num_exporters"] = ifstats["zmq.num_exporters"] or 0
end
res["tcpPacketStats"] = {}
res["tcpPacketStats"]["retransmissions"] = ifstats.tcpPacketStats.retransmissions
res["tcpPacketStats"]["out_of_order"] = ifstats.tcpPacketStats.out_of_order
res["tcpPacketStats"]["lost"] = ifstats.tcpPacketStats.lost
if(ifstats["profiles"] ~= nil) then
res["profiles"] = ifstats["profiles"]
end
if recording_utils.isAvailable() then
if recording_utils.isEnabled(ifstats.id) then
if recording_utils.isActive(ifstats.id) then
res["traffic_recording"] = "recording"
else
res["traffic_recording"] = "failed"
end
end
if recording_utils.isEnabled(ifstats.id) then
local jobs_info = recording_utils.extractionJobsInfo(ifstats.id)
if jobs_info.ready > 0 then
res["traffic_extraction"] = "ready"
elseif jobs_info.total > 0 then
res["traffic_extraction"] = jobs_info.total
end
res["traffic_extraction_num_tasks"] = jobs_info.total
end
end
end
return res
end
-- ###############################
local res = {}
if(_GET["iffilter"] == "all") then
for cur_ifid, ifname in pairs(interface.getIfNames()) do
-- ifid in the key must be a string or json.encode will think
-- its a lua array and will look for integers starting at one
res[cur_ifid..""] = dumpInterfaceStats(cur_ifid)
end
elseif not isEmptyString(_GET["iffilter"]) then
res = dumpInterfaceStats(_GET["iffilter"])
else
local ifid = nil
if not isEmptyString(_GET["ifid"]) then
ifid = _GET["ifid"]
res = dumpInterfaceStats(ifid)
end
end
print(json.encode(res))
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