Add user scripts getters

scripts/lua/get_user_scripts.lua

@@ -0,0 +1,43 @@
+--
+-- (C) 2019 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+local json = require("dkjson")
+local user_scripts = require("user_scripts")
+
+sendHTTPContentTypeHeader('application/json')
+
+local stype = _GET["script_type"] or "traffic_element"
+local subdir = _GET["script_subdir"] or "host"
+
+local script_type = user_scripts.script_types[stype]
+
+if(script_type == nil) then
+  traceError(TRACE_ERROR, TRACE_CONSOLE, "Bad script_type: " .. stype)
+  return
+end
+
+-- ################################################
+
+interface.select(getSystemInterfaceId())
+
+local scripts = user_scripts.load(getSystemInterfaceId(), script_type, subdir)
+local result = {}
+
+for script_name, script in pairs(scripts.modules) do
+  if script.gui.i18n_title and script.gui.i18n_description then
+    result[#result + 1] = {
+      key = script_name,
+      title = i18n(script.gui.i18n_title) or script.gui.i18n_title,
+      description = i18n(script.gui.i18n_description) or script.gui.i18n_description,
+    }
+  end
+end
+
+-- ################################################
+
+print(json.encode(result))