-- ***********************************************************************************
--               Nick/IP Range Bans                 *****************************************
-- ***********************************************************************************
NICKBANS = {}

local write_nickbans = function()
    local f = io.open(minetest.get_worldpath()..'/.nickbans', "w")
    f:write(minetest.serialize(NICKBANS))
    io.close(f)
end
local gonfile = io.open(minetest.get_worldpath()..'/.nickbans', "r")
if gonfile then
    local contents = gonfile:read()
    io.close(gonfile)
    if contents ~= nil then
        NICKBANS = minetest.deserialize(contents)
    end
end
local default_ban = minetest.ban_player
function minetest.ban_player(playername)
    NICKBANS[playername] = true
    write_nickbans()
    return default_ban(playername)
end

IPRBANS = {}
local add_ip_range = function(range)
    local ipr = string.split(range,'.')
    if table.getn(ipr) < 3 then return end
    if not IPRBANS[ipr[1]] then IPRBANS[ipr[1]] = {} end
    if not IPRBANS[ipr[1]][ipr[2]] then IPRBANS[ipr[1]][ipr[2]] = {} end
    if not IPRBANS[ipr[1]][ipr[2]][ipr[3]] then IPRBANS[ipr[1]][ipr[2]][ipr[3]] = true end
end

--add_ip_range('66.66.66')   -- test range

minetest.register_on_joinplayer(function(player)
    player = player:get_player_name()
    if NICKBANS[player] or string.match(player,"%d%d(%d+)") then -- or string.match(player,"Guest%d%d%d%d")
        minetest.ban_player(player)
        minetest.log("action", player.." banned [nick]")
    end
    local ip = string.split(minetest.get_player_ip(player),'.')
    if IPRBANS[ip[1]] and IPRBANS[ip[1]][ip[2]] and IPRBANS[ip[1]][ip[2]][ip[3]] then
        minetest.ban_player(player)
        minetest.log("action", player.." banned [ip-range]")
    end

end)