98 lines
2.7 KiB
Lua
98 lines
2.7 KiB
Lua
local rpc = require "rpc"
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local shortport = require "shortport"
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local stdnse = require "stdnse"
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local table = require "table"
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local string = require "string"
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description = [[
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Shows NFS exports, like the <code>showmount -e</code> command.
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]]
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---
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-- @output
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-- PORT STATE SERVICE
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-- 111/tcp open rpcbind
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-- | nfs-showmount:
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-- | /home/storage/backup 10.46.200.0/255.255.255.0
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-- |_ /home 1.2.3.4/255.255.255.255 10.46.200.0/255.255.255.0
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--
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-- Version 0.7
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-- Created 11/23/2009 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
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-- Revised 11/24/2009 - v0.2 - added RPC query to find mountd ports
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-- Revised 11/24/2009 - v0.3 - added a hostrule instead of portrule
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-- Revised 11/26/2009 - v0.4 - reduced packet sizes and documented them
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-- Revised 01/24/2009 - v0.5 - complete rewrite, moved all NFS related code into nselib/nfs.lua
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-- Revised 02/22/2009 - v0.6 - adapted to support new RPC library
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-- Revised 03/13/2010 - v0.7 - converted host to port rule
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author = "Patrik Karlsson"
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license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
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categories = {"discovery", "safe"}
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dependencies = {"rpc-grind"}
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portrule = shortport.port_or_service(111, {"rpcbind", "mountd"}, {"tcp", "udp"} )
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local function get_exports(host, port)
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local mnt = rpc.Mount:new()
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local mountver
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if host.registry.nfs then
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mountver = host.registry.nfs.mountver
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else
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host.registry.nfs = {}
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end
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if mountver == nil then
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local low, high = string.match(port.version.version, "(%d)%-(%d)")
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if high == nil then
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mountver = tonumber(port.version.version)
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else
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mountver = tonumber(high)
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end
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end
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local mnt_comm = rpc.Comm:new('mountd', mountver)
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local status, result = mnt_comm:Connect(host, port)
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if ( not(status) ) then
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stdnse.debug4("get_exports: %s", result)
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return false, result
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end
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host.registry.nfs.mountver = mountver
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host.registry.nfs.mountport = port
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local status, mounts = mnt:Export(mnt_comm)
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mnt_comm:Disconnect()
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if ( not(status) ) then
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stdnse.debug4("get_exports: %s", mounts)
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end
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return status, mounts
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end
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action = function(host, port)
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local status, mounts, proto
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local result = {}
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if port.service == "mountd" then
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status, mounts = get_exports( host, port )
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else
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status, mounts = rpc.Helper.ShowMounts( host, port )
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end
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if not status or mounts == nil then
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return stdnse.format_output(false, mounts)
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end
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if #mounts < 1 then
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return "No NFS mounts available"
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end
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for _, v in ipairs( mounts ) do
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local entry = v.name .. " " .. table.concat(v, " ")
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table.insert( result, entry )
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end
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return stdnse.format_output( true, result )
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end
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