local conf=fs.open('/etc/cnt.conf','r')
local cn_table = {}
line = conf.readLine()
while line ~= nil do
	local name=string.sub(line,0,string.find(line, ' '))
	address = tonumber(string.sub(line,string.find(line,' ')+1))
	print(name..address)
	cn_table[name]=address
	line = conf.readLine()
end	


print("Waiting for queries...")
while 1 do
	local found=0
	local senderId, message, distance = rednet.receive()
	query=textutils.unserialize(message)
	if query[1] == 'CNT' then
		print("Query of "..query[2].." from "..senderId)
		for key,value in pairs(cn_table) do 
			tmp=query[2]
			if tonumber(tmp) ~= nil then
				if tonumber(value) == tonumber(tmp) then
					reply=textutils.serialize({"CNT",key})
					found=1
				end
			else				
				if(string.find(key,tmp,0,true)) then
					reply=textutils.serialize({"CNT",value})
					found=1
				end
			end
		end
		if found ~= 1 then
				reply=textutils.serialize({"CNT",-1})
		end
	rednet.send(senderId,reply)
	end
end