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