description = [[
Performs a GET request for the root folder ("/") of a web server and displays the HTTP headers returned.
]]
---
-- @output
-- Interesting ports on scanme.nmap.org (64.13.134.52):
-- PORT STATE SERVICE
-- 80/tcp open http syn-ack
-- | http-headers:
-- | | HTTP/1.1 200 OK
-- | | Date: Tue, 10 Nov 2009 01:25:11 GMT
-- | | Server: Apache/2.2.9 (Unix) PHP/5.2.10
-- | | Last-Modified: Sat, 11 Oct 2008 15:22:21 GMT
-- | | ETag: "90013-e3d-458fbd508c540"
-- | | Accept-Ranges: bytes
-- | | Content-Length: 3645
-- | | Connection: close
-- | | Content-Type: text/html
-- |_ |_ (Request type: HEAD)
--
--@args path The path to request, such as <code>/index.php</code>. Default <code>/</code>.
--@args useget Set to force GET requests instead of HEAD.
author = "Ron Bowes"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}
require "shortport"
require "http"
portrule = shortport.http
action = function(host, port)
local path = nmap.registry.args.path
local request_type = "HEAD"
if(path == nil) then
path = '/'
end
local status = false
local result
-- Check if the user didn't want HEAD to be used
if(nmap.registry.args.useget == nil) then
-- Try using HEAD first
status, result = http.can_use_head(host, port, nil, path)
end
-- If head failed, try using GET
if(status == false) then
stdnse.print_debug(1, "http-headers.nse: HEAD request failed, falling back to GET")
result = http.get(host, port, path)
request_type = "GET"
end
if(result == nil) then
if(nmap.debugging() > 0) then
return "ERROR: Header request failed"
else
return nil
end
end
if(result.rawheader == nil) then
if(nmap.debugging() > 0) then
return "ERROR: Header request didn't return a proper header"
else
return nil
end
end
table.insert(result.rawheader, "(Request type: " .. request_type .. ")")
-- for _, header in ipairs(result.rawheader) do
-- response = response .. header .. "\n"
-- end
return stdnse.format_output(true, result.rawheader)
end
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