Standardize random string generation on stdnse.generate_random_string

nselib/sip.lua

@@ -738,23 +738,9 @@ Util = {
   -- @param set    (optional) The set of letters to choose from. Default: upper, lower, numbers, and underscore.
   -- @return The random string.
   get_random_string = function(length, set)
-    if(length == nil) then
-      length = 8
-    end
-
-    if(set == nil) then
-      set = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_"
-    end
-
-    local str = ""
-
-    for i = 1, length, 1 do
-      local random = math.random(#set)
-      str = str .. string.sub(set, random, random)
-    end
-
-    return str
-  end
+    return stdnse.generate_random_string(length or 8,
+      set or "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_")
+  end,
 
 }