local bit = require "bit"
local nmap = require "nmap"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"

_ENV = stdnse.module("exploit", stdnse.seeall)


-- copied from ls.lua, change to suit exploit.lua
local config_values = {
  ["maxdepth"] = 1,
  ["maxfiles"] = 10,
  ["checksum"] = false,
  ["errors"] = false,
  ["empty"] = false,
  ["human"] = false,
}


--- Convert an argument to its expected type
local function convert_arg(argval, argtype)
  if argtype == "number" then
    return tonumber(argval)
  elseif argtype == "boolean" then
    if argval == "false" or argval == "no" or argval == "0" then
      return false
    else
      return true
    end
  end
  return argval
end

--- Update config_values using module arguments ("ls.argname", as
-- opposed to script-specific arguments, "http-ls.argname")
for argname, argvalue in pairs(config_values) do
  local argval = stdnse.get_script_args(LIBRARY_NAME .. "." .. argname)
  if argval ~= nil then
    config_values[argname] = convert_arg(argval, type(argvalue))
  end
end

--- Get a config value from (by order or priority):
-- 1. a script-specific argument (e.g., http-ls.argname)
-- 2. a module argument (ls.argname)
-- 3. the default value
-- @param argname The name of the configuration parameter
-- @return The configuration value
function config(argname)
  local argval = stdnse.get_script_args(stdnse.getid() .. "." .. argname)
  if argval == nil then
    return config_values[argname]
  else
    return convert_arg(argval, type(config_values[argname]))
  end
end


-- generates a payload for given architectures
local function generate_payload(architecture)

end

-- nmap shell, creates a shell to execute commands
local function nshell()

end

local function lfi( ... )
  -- body
end

return _ENV;