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6139ed22e7
In most cases (e.g. any of the nmap.socket operations), functions can take full host and port tables instead of just host.ip and port.number. This makes for cleaner-looking code and easier extensibility if we decide to check for a protocol on both TCP and UDP, for instance.
72 lines
1.8 KiB
Lua
72 lines
1.8 KiB
Lua
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 vnc = require "vnc"
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description = [[
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Queries a VNC server for its protocol version and supported security types.
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]]
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author = "Patrik Karlsson"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"default", "discovery", "safe"}
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---
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-- @output
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-- PORT STATE SERVICE
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-- 5900/tcp open vnc
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-- | vnc-info:
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-- | Protocol version: 3.889
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-- | Security types:
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-- | Mac OS X security type (30)
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-- |_ Mac OS X security type (35)
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--
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-- @xmloutput
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-- <elem key="Protocol version">3.8</elem>
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-- <table key="Security types">
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-- <table>
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-- <elem key="name">Ultra</elem>
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-- <elem key="type">17</elem>
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-- </table>
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-- <table>
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-- <elem key="name">VNC Authentication</elem>
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-- <elem key="type">2</elem>
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-- </table>
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-- </table>
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-- Version 0.2
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-- Created 07/07/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
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-- Revised 08/14/2010 - v0.2 - changed so that errors are reported even without debugging
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portrule = shortport.port_or_service( {5900, 5901, 5902} , "vnc", "tcp", "open")
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action = function(host, port)
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local vnc = vnc.VNC:new( host, port )
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local status, data
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local result = stdnse.output_table()
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status, data = vnc:connect()
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if ( not(status) ) then return " \n ERROR: " .. data end
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status, data = vnc:handshake()
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if ( not(status) ) then return " \n ERROR: " .. data end
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status, data = vnc:getSecTypesAsTable()
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if ( not(status) ) then return " \n ERROR: " .. data end
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result["Protocol version"] = vnc:getProtocolVersion()
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if ( data and #data ~= 0 ) then
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result["Security types"] = data
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end
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if ( vnc:supportsSecType(vnc.sectypes.NONE) ) then
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result["WARNING"] = "Server does not require authentication"
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end
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return result
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end
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