Fix many missing requires.

scripts/lua/modules/http_lint.lua

@@ -20,6 +20,7 @@ local http_lint = {}
 local json = require "dkjson"
 local tracker = require "tracker"
 local locales_utils = require "locales_utils"
+require "ntop_utils"
 
 -- #################################################################
 
@@ -93,7 +94,7 @@ local function validateListOfType(l, validate_callback, separator)
    local items = split(l, separator)
 
    for _, item in pairs(items) do
-      if item ~= "" then
+      if item and item ~= "" then
 	 if not validate_callback(item) then
 	    return false
 	 end

scripts/lua/modules/label_utils.lua

@@ -162,11 +162,11 @@ function hostkey2hostinfo(key)
   local host = {}
   local info = split(key,"@")
 
-  if(info[1] ~= nil) then
+  if(info and info[1] ~= nil) then
     host["host"] = info[1]
   end
 
-  if(info[2] ~= nil) then
+  if(info and info[2] ~= nil) then
     host["vlan"] = tonumber(info[2])
   else
     host["vlan"] = 0

scripts/lua/modules/lua_utils_gui.lua

@@ -1662,6 +1662,7 @@ if ((ifname == nil) and (_GET ~= nil)) then
 
     if (ifname ~= nil) then
         if (ifname .. "" == tostring(tonumber(ifname)) .. "") then
+            require "label_utils"
             -- ifname does not contain the interface name but rather the interface id
             ifname = getInterfaceName(ifname, true)
             if (ifname == "") then

scripts/lua/modules/rest_utils.lua

@@ -8,7 +8,7 @@ local clock_start = os.clock()
 local dirs = ntop.getDirs()
 package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
 
--- require "lua_utils"
+require "lua_utils"
 local json = require ("dkjson")
 
 local rest_utils = {

scripts/lua/modules/timeseries/ts_common.lua

@@ -176,6 +176,7 @@ end
 
 -- If a point value exceeds this value, it should be discarded as invalid
 function ts_common.getMaxPointValue(schema, metric, tags)
+    require "lua_utils_get"
     if tags.ifid ~= nil then
         if string.contains(metric, "bytes") then
             local ifspeed = getInterfaceSpeed(tonumber(tags.ifid))

scripts/lua/modules/timeseries_info.lua

@@ -3,8 +3,10 @@
 --
 local dirs = ntop.getDirs()
 package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+package.path = dirs.installdir .. "/scripts/lua/modules/timeseries/?.lua;" .. package.path
 
 local ts_utils = require "ts_utils"
+require "lua_utils_generic"
 
 local timeseries_info = {}