Added listening ports frontend

scripts/lua/rest/v2/get/host/processes/listening_ports.lua

@@ -0,0 +1,45 @@
+--
+-- (C) 2013-22 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+
+require "lua_utils"
+local rest_utils = require("rest_utils")
+
+--
+-- Retrieves all ntopng interfaces of a given host
+-- Example: curl -u admin:admin -H "Content-Type: application/json" -d '{"host" : "192.168.1.1"}' http://localhost:3000/lua/rest/v1/get/host/interfaces.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 ip = _GET["host"] or ""
+local vlan = _GET["vlan"] or ""
+
+if isEmptyString(ip) and isEmptyString(vlan) then
+  rest_utils.answer(rest_utils.consts.err.invalid_args)
+  return
+end
+
+local host = interface.getHostInfo(ip, vlan)
+
+for listening_type, data in pairs(host.listening_ports or {}) do
+  local process = {}
+  
+  for port, process_info in pairs(data) do
+    process["tcp_udp"] = listening_type
+    process["port"] = port
+    process["package"] = process_info["package"]
+    process["process"] = process_info["process"]
+  end
+
+  if table.len(process) > 0 then
+    res[#res + 1] = process
+  end
+end
+
+rest_utils.answer(rc, res)