-Adds xml structured output support and the corresponding @xmloutput tag.

scripts/hostmap-robtex.nse

@@ -6,7 +6,7 @@ local table = require "table"
 
 description = [[
 Discovers hostnames that resolve to the target's IP address by querying the online Robtex service at http://ip.robtex.com/.
-]];
+]]
 
 ---
 -- @usage
@@ -14,55 +14,58 @@ Discovers hostnames that resolve to the target's IP address by querying the onli
 --
 -- @output
 -- | hostmap-robtex: 
--- |   scanme.nmap.org
--- |   li86-221.members.linode.com
--- |   chat.nmap.org
--- |   scanme.insecure.org
--- |   scanme.nmap.com
--- |_  scanme.org
---
+-- |   hosts: 
+-- |_    scanme.nmap.org
+-- 
+-- @xmloutput
+-- <table key="hosts">
+--  <elem>nmap.org</elem>
+-- </table>
+---
 
-author = "Arturo 'Buanzo' Busleiman";
-license = "Same as Nmap--See http://nmap.org/book/man-legal.html";
+author = "Arturo 'Buanzo' Busleiman"
+license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
 categories = {
   "discovery",
   "safe",
   "external"
-};
+}
 
 
 --- Scrape domains sharing target host ip from robtex website
 -- @param data string containing the retrieved web page
 -- @return table containing the host names sharing host.ip
 function parse_robtex_response (data)
-  local result = {};
+  local result = {}
 
   for domain in string.gmatch(data, "<span id=\"dns[0-9]+\"><a href=\"//[a-z]+.robtex.com/([^\"]-)%.html\"") do
     if not table.contains(result, domain) then
-      table.insert(result, domain);
+      table.insert(result, domain)
     end
   end
-  return result;
+  return result
 end
 
 hostrule = function (host)
   return not ipOps.isPrivate(host.ip)
-end;
+end
 
 action = function (host)
-  local link = "http://ip.robtex.com/" .. host.ip .. ".html";
-  local htmldata = http.get_url(link);
-  local domains = parse_robtex_response(htmldata.body);
+  local link = "http://ip.robtex.com/" .. host.ip .. ".html"
+  local htmldata = http.get_url(link)
+  local domains = parse_robtex_response(htmldata.body)
+  local output_tab = stdnse.output_table()
   if (#domains > 0) then
-    return stdnse.format_output(true, domains);
+    output_tab.hosts = domains
   end
-end;
+  return output_tab
+end
 
 function table.contains (table, element)
   for _, value in pairs(table) do
     if value == element then
-      return true;
+      return true
     end
   end
-  return false;
+  return false
 end