Added mapServiceName

Example mapServiceName(80, "tcp")

scripts/lua/modules/lua_utils_get.lua

@@ -1404,6 +1404,55 @@ function get_confidence(confidence_id, shorten_string)
     return confidence_name
 end
 
+-- ##############################################
+
+local services = nil
+
+local function readServices()
+   if(services == nil) then
+      local file = io.open("/etc/services", "r")
+      if not file then return services end
+      
+      services = {}
+      
+      for line in file:lines() do
+	 if((line ~= "") and (not(string.starts(line, "#")))) then
+	    line = line:gsub("\t", " ")
+	    line = line:gsub("  ", " ")
+	    local elems = split(line, " ")
+	    local label = elems[1]
+	    local value
+	    local i = 2
+	    
+	    while(elems[i] ~= nil) do
+	       if(elems[i] ~=  "") then
+		  value = elems[i]
+		  break
+	       end
+
+	       i = i + 1
+	    end
+	    
+	    services[value] = label
+	    -- print(label.." = "..value.."<br>\n")
+	 end
+      end
+      
+      file:close()
+   end
+
+   return(services)
+end
+
+-- Example mapServiceName(80, "tcp")
+function mapServiceName(port, protocol)
+   readServices()
+   local key = tostring(port).."/"..protocol
+
+   return(services[key])
+end
+
+
 -- ##############################################
 
 if (trace_script_duration ~= nil) then