#!/usr/bin/lua

config     = require "config"
connection = require "connection"

io.stdout:setvbuf 'no'
io.stdin:setvbuf 'no'

if arg then
  cf = arg[1]
else 
  cf = nil
end    

config.read(cf)

function string:split(sep)
   local sep, fields = sep or ":", {}
   local pattern = string.format("([^%s]+)", sep)
   self:gsub(pattern, function(c) fields[#fields+1] = c end)
   return fields
end

function main()
  while true do
    str=io.read()
    vals = str:split(" ")
--    status, res = pcall(connection.auth,vals[1],vals[2],vals[3])
    status = 1
    res = connection.auth(vals[1],vals[2],vals[3])
    if status then
      if res and res ~= "" then
        io.write("OK user="..res.."\n")
      else 
        io.write("OK\n")
      end
    else
      io.write("BH\n")
    end    
  end
end

main()