Added support to importing and exporting snmp data (#8726)

scripts/lua/rest/v2/import/snmp_data/config.lua

@@ -0,0 +1,50 @@
+--
+-- (C) 2019-24 - ntop.org
+--
+dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+package.path = dirs.installdir .. "/scripts/lua/modules/import_export/?.lua;" .. package.path
+
+require "lua_utils"
+
+local snmp_import_export = require "snmp_import_export"
+local json = require "dkjson"
+local rest_utils = require "rest_utils"
+local import_export_rest_utils = require "import_export_rest_utils"
+
+--
+-- Import SNMP configuration
+--
+-- NOTE: in case of invalid login, no error is returned but redirected to login
+--
+
+if not isAdministratorOrPrintErr() then
+    rest_utils.answer(rest_utils.consts.err.not_granted)
+    return
+end
+
+-- ################################################
+
+local modules = import_export_rest_utils.unpack(_POST["JSON"])
+
+if not modules then
+    rest_utils.answer(rest_utils.consts.err.invalid_args)
+    return
+end
+
+if not modules["snmp"] and not modules["snmp_data"] then
+    rest_utils.answer(rest_utils.consts.err.configuration_file_mismatch)
+    return
+end
+
+local items = {}
+
+local snmp_ie = snmp_import_export:create()
+items[#items + 1] = {
+    name = "snmp",
+    conf = modules["snmp_data"],
+    instance = snmp_ie
+}
+
+import_export_rest_utils.import(items)
+