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114 lines
2.3 KiB
Lua
114 lines
2.3 KiB
Lua
--
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-- (C) 2013-20 - ntop.org
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--
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local dirs = ntop.getDirs()
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package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
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require "lua_utils"
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local rest_utils = require("rest_utils")
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--
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-- Read statistics about nDPI application protocols for a hsot
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-- Example: curl -u admin:admin -d '{"ifid": "1"}' http://localhost:3000/lua/rest/v1/get/host/l7/stats.lua
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--
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-- NOTE: in case of invalid login, no error is returned but redirected to login
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--
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sendHTTPHeader('application/json')
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local rc = rest_utils.consts_ok
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local res = {}
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local ifid = _GET["ifid"]
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local host_info = url2hostinfo(_GET)
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local breed = _GET["breed"]
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local ndpi_category = _GET["ndpi_category"]
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if isEmptyString(ifid) then
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rc = rest_utils.consts_invalid_interface
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print(rest_utils.rc(rc))
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return
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end
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local show_breed = false
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if breed == "true" then
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show_breed = true
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end
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local show_ndpi_category = false
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if ndpi_category == "true" then
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show_ndpi_category = true
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end
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interface.select(ifid)
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local ndpi_protos = interface.getnDPIProtocols()
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local function getAppUrl(app)
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if ndpi_protos[app] ~= nil then
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return ntop.getHttpPrefix().."/lua/flows_stats.lua?application="..app
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end
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return nil
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end
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local tot = 0
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local stats = interface.getHostInfo(host_info["host"], host_info["vlan"])
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if stats == nil then
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print(rest_utils.rc(rest_utils.consts_not_found))
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return
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end
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tot = stats["bytes.sent"] + stats["bytes.rcvd"]
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local _ifstats = computeL7Stats(stats, show_breed, show_ndpi_category)
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-- Print up to this number of entries
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local max_num_entries = 5
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-- Print entries whose value >= 3% of the total
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local threshold = (tot * 3) / 100
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local num = 0
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local accumulate = 0
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for key, value in pairsByValues(_ifstats, rev) do
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if(value < threshold) then
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break
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end
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local duration = 0
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if(stats["ndpi"][key] ~= nil) then
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duration = stats["ndpi"][key]["duration"]
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end
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res[#res + 1] = {
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label = key,
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value = value,
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duration = duration,
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}
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accumulate = accumulate + value
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num = num + 1
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if(num == max_num_entries) then
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break
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end
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end
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if(tot == 0) then
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tot = 1
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end
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-- In case there is some leftover do print it as "Other"
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if(accumulate < tot) then
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res[#res + 1] = {
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label = i18n("other"),
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value = (tot-accumulate),
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}
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end
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print(rest_utils.rc(rc, res))
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