Adds new REST API v2/

Addresses #5269

scripts/lua/rest/v2/get/pool/config.lua

@@ -0,0 +1,48 @@
+--
+-- (C) 2019-21 - ntop.org
+--
+dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+
+local info = ntop.getInfo() 
+
+local json = require ("dkjson")
+local page_utils = require("page_utils")
+local format_utils = require("format_utils")
+local os_utils = require "os_utils"
+local host_pools_nedge = require "host_pools_nedge"
+local rest_utils = require("rest_utils")
+
+--
+-- Read host pools configuration
+-- Example: curl -u admin:admin -H "Content-Type: application/json" -d '{"ifid": "1"}' http://localhost:3000/lua/rest/v2/get/pool/config.lua
+--
+-- NOTE: in case of invalid login, no error is returned but redirected to login
+--
+
+local rc = rest_utils.consts.success.ok
+local res = {}
+
+local ifid = _GET["ifid"]
+local download = _GET["download"] 
+
+if not isAdministratorOrPrintErr() then
+   rest_utils.answer(rest_utils.consts.err.not_granted)
+   return
+end
+
+if isEmptyString(ifid) then
+   rest_utils.answer(rest_utils.consts.err.invalid_interface)
+   return
+end
+
+local res = host_pools_nedge.export()
+
+if isEmptyString(download) then
+  rest_utils.answer(rc, res)
+else
+  sendHTTPContentTypeHeader('application/json', 'attachment; filename="pools_configuration.json"')
+  print(json.encode(res, nil))
+end