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--
-- (C) 2013-22 - ntop.org
--
dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
require "db_utils"
local json = require ("dkjson")
sendHTTPContentTypeHeader('text/html')
local ifid = _GET["ifid"]
if ifid == nil or ifid == "" then
ifid = getInterfaceId(ifname)
end
-- use this two params to see statistics of a single host
-- or for a pair of them
local host = _GET["peer1"]
local peer = _GET["peer2"]
if peer and not host then
host = peer
peer = nil
end
-- this is to retrieve L7 application data
local l7_proto_id = _GET["l7_proto_id"]
-- specify the type of stats
local action = _GET["fav_action"]
if action == nil or (action ~= "set" and action ~= "get" and action ~= "del" and action ~= "del_all") then
-- default to get
stats_type = "get"
end
local stats_type = _GET["stats_type"]
if stats_type == nil or (stats_type ~= "top_talkers" and stats_type ~= "top_applications") then
-- default to top traffic
stats_type = "top_talkers"
end
local favourite_type = _GET["favourite_type"]
if favourite_type == nil or
(favourite_type ~= "talker" and favourite_type ~= "apps_per_host_pair" and
favourite_type ~= "app" and favourite_type ~= "host_peers_by_app") then
-- default to talkers
-- infer the favourite type by looking at peers
favourite_type = "talker"
end
-- start building the response
local res = {["status"] = "unable to parse the request, please check input parameters."}
-- prepare the redis key
local k = getRedisPrefix("ntopng.prefs")..'.'..tostring(ifid)..'.historical_favourites.'..stats_type..'.'..favourite_type
if action == "get" then
-- retrieve all the elements set for this kind of preference
res = ntop.getHashKeysCache(k)
if res == nil then res = {} end
-- now it's time to retrieve has values that contain resolved addresses
-- and are a more-user friendly way to represent hosts
for h, _ in pairs(res) do
res[h] = ntop.getHashCache(k, h)
if res[h] == "" or res[h] == nil then res[h] = h end
end
elseif action == "set" or action == "del" then
local entry = ""
local resolved = ""
-- TOP TALKERS favourites
if favourite_type == "talker" or favourite_type == "apps_per_host_pair" then
if host ~= "" and host ~= nil then
entry = host
local hinfo = hostkey2hostinfo(host)
resolved = hostinfo2label(hinfo)
if peer ~= "" and peer ~= nil then
entry = entry..','..peer
local hinfo = hostkey2hostinfo(peer)
resolved = resolved..','..hostinfo2label(hinfo)
end
end
-- TOP APPLICATIONS favourites
elseif favourite_type == "app" or favourite_type == "host_peers_by_app" then
if l7_proto_id ~= "" and l7_proto_id ~= nil then
entry = l7_proto_id
resolved = interface.getnDPIProtoName(tonumber(l7_proto_id))
if host ~= "" and host ~= nil then
entry = entry..','..host
local hinfo = hostkey2hostinfo(host)
resolved = resolved..','..hostinfo2label(hinfo)
end
end
end
if entry ~= "" then
if action == "set" then
ntop.setHashCache(k, entry, resolved)
elseif action == "del" then
ntop.delHashCache(k, entry)
end
end
res = {}
elseif action == "del_all" then
ntop.delCache(k)
res = {}
else
-- should never be reached
end
print(json.encode(res, nil))
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