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local iscsi = require "iscsi"
local shortport = require "shortport"
local stdnse = require "stdnse"
description = [[
Collects and displays information from remote iSCSI targets.
]]
---
-- @output
-- PORT STATE SERVICE
-- 3260/tcp open iscsi
-- | iscsi-info:
-- | iqn.2006-01.com.openfiler:tsn.c8c08cad469d
-- | Address: 192.168.56.5:3260,1
-- | Authentication: NOT required
-- | iqn.2006-01.com.openfiler:tsn.6aea7e052952
-- | Address: 192.168.56.5:3260,1
-- | Authentication: required
-- |_ Auth reason: Authentication failure
--
-- @xmloutput
-- <table key="iqn.2006-01.com.openfiler:tsn.c8c08cad469d">
-- <elem key="Address">192.168.56.5:3260,1</elem>
-- <elem key="Authentication">NOT required</elem>
-- </table>
-- <table key="iqn.2006-01.com.openfiler:tsn.6aea7e052952">
-- <elem key="Address">192.168.56.5:3260,1</elem>
-- <elem key="Authentication">required</elem>
-- <elem key="Auth reason">Authentication failure</elem>
-- </table>
-- Version 0.2
-- Created 2010/11/18 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
-- Revised 2010/11/28 - v0.2 - improved error handling <patrik@cqure.net>
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"default", "safe", "discovery"}
portrule = shortport.portnumber(3260, "tcp", {"open", "open|filtered"})
-- Attempts to determine whether authentication is required or not
--
-- @return status true on success false on failure
-- @return result true if auth is required false if not
-- err string containing error message
local function requiresAuth( host, port, target )
local helper = iscsi.Helper:new( host, port )
local errors = iscsi.Packet.LoginResponse.Errors
local status, err = helper:connect()
if ( not(status) ) then return false, "Failed to connect" end
local response
status, response = helper:login( target )
if ( not(status) ) then return false, response:getErrorMessage() end
if ( status and response:getErrorCode() == errors.SUCCESS) then
-- try to logout
status = helper:logout()
end
status = helper:close()
return true, "Authentication successful"
end
action = function( host, port )
local helper = iscsi.Helper:new( host, port )
local status = helper:connect()
if ( not(status) ) then
stdnse.debug1("failed to connect to server" )
return
end
local records
status, records = helper:discoverTargets()
if ( not(status) ) then
stdnse.debug1("failed to discover targets" )
return
end
status = helper:logout()
status = helper:close()
local result = stdnse.output_table()
for _, record in ipairs(records) do
local result_part = stdnse.output_table()
for _, addr in ipairs( record.addr ) do
result_part["Address"] = addr
end
local status, err = requiresAuth( host, port, record.name )
if ( not(status) ) then
result_part["Authentication"] = "required"
result_part["Auth reason"] = err
else
result_part["Authentication"] = "NOT required"
end
result[record.name] = result_part
end
return result
end
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