local http = require "http" local shortport = require "shortport" local stdnse = require "stdnse" local string = require "string" description = [[ Shows the title of the default page of a web server. The script will follow up to 5 HTTP redirects, using the default rules in the http library. ]] --- --@args http-title.url The url to fetch. Default: / --@output -- Nmap scan report for scanme.nmap.org (74.207.244.221) -- PORT STATE SERVICE -- 80/tcp open http -- |_http-title: Go ahead and ScanMe! -- -- @xmloutput -- Go ahead and ScanMe! -- @xmloutput -- Wikipedia, the free encyclopedia -- http://en.wikipedia.org/wiki/Main_Page author = "Diman Todorov" license = "Same as Nmap--See https://nmap.org/book/man-legal.html" categories = {"default", "discovery", "safe"} portrule = shortport.http action = function(host, port) local resp, redirect_url, title resp = http.get( host, port, stdnse.get_script_args(SCRIPT_NAME..".url") or "/" ) -- check for a redirect if resp.location then redirect_url = resp.location[#resp.location] if resp.status and tostring( resp.status ):match( "30%d" ) then return {redirect_url = redirect_url}, ("Did not follow redirect to %s"):format( redirect_url ) end end if ( not(resp.body) ) then return end -- try and match title tags title = string.match(resp.body, "<[Tt][Ii][Tt][Ll][Ee][^>]*>([^<]*)") local display_title = title if display_title and display_title ~= "" then display_title = string.gsub(display_title , "[\n\r\t]", "") if #display_title > 65 then display_title = string.sub(display_title, 1, 62) .. "..." end else display_title = "Site doesn't have a title" if ( resp.header and resp.header["content-type"] ) then display_title = display_title .. (" (%s)."):format( resp.header["content-type"] ) else display_title = display_title .. "." end end local output_tab = stdnse.output_table() output_tab.title = title output_tab.redirect_url = redirect_url local output_str = display_title if redirect_url then output_str = output_str .. "\n" .. ("Requested resource was %s"):format( redirect_url ) end return output_tab, output_str end