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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 json = require("dkjson")
local recording_utils = require "recording_utils"
local rest_utils = require("rest_utils")
--
-- Run a traffic extraction
-- Example: curl -u admin:admin -H "Content-Type: application/json" -d '{"ifid": "1", "epoch_begin": 1589822000, "epoch_end": 15898221000 }' http://localhost:3000/lua/rest/v1/get/pcap/live_extraction.lua
--
-- NOTE: in case of invalid login, no error is returned but redirected to login
--
local ifid = tonumber(_GET["ifid"])
local filter = _GET["bpf_filter"]
local time_from = tonumber(_GET["epoch_begin"])
local time_to = tonumber(_GET["epoch_end"])
local rc = rest_utils.consts.success.ok
if not recording_utils.isExtractionAvailable() then
rc = rest_utils.consts.err.not_granted
rest_utils.answer(rc)
return
end
if isEmptyString(ifid) then
rc = rest_utils.consts.err.invalid_interface
rest_utils.answer(rc)
return
end
if _GET["epoch_begin"] == nil or _GET["epoch_end"] == nil then
rc = rest_utils.consts.err.invalid_arguments
rest_utils.answer(rc)
return
end
interface.select(ifid)
if filter == nil then
filter = ""
end
local timeline_path
if recording_utils.getCurrentTrafficRecordingProvider(ifid) ~= "ntopng" then
timeline_path = recording_utils.getCurrentTrafficRecordingProviderTimelinePath(ifid)
end
local fname = time_from.."-"..time_to..".pcap"
sendHTTPContentTypeHeader('application/vnd.tcpdump.pcap', 'attachment; filename="'..fname..'"')
ntop.runLiveExtraction(ifid, time_from, time_to, filter, timeline_path)
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