40 lines
996 B
Lua
40 lines
996 B
Lua
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-- check-port.nse
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local nmap = require "nmap"
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local stdnse = require "stdnse"
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local shortport = require "shortport"
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local arg_port = tonumber(stdnse.get_script_args("checkport.port")) or 80
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portrule = function(host, port)
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return port.number == arg_port
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end
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action = function(host, port)
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if port.state ~= "open" then
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return ("port %d closed on %s"):format(port.number, host.ip or host.targetname)
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end
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local s, err = nmap.new_socket()
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if not s then
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return ("socket error: %s"):format(err or "unknown")
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end
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s:set_timeout(3000)
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local ok, cerr = s:connect(host.ip, port.number)
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if not ok then
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s:close()
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return ("connect failed: %s"):format(cerr or "unknown")
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end
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local status, data = pcall(function() return s:receive(512) end)
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s:close()
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if status and data and #data > 0 then
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data = data:gsub("%s+", " ")
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return ("port %d open — banner: %q"):format(port.number, data)
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end
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return ("port %d open — no banner"):format(port.number)
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end
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