IP filter

ip_filter.lua

IPFilter = {}

-- CONFIG

IPFilter.KickMessage = "Sorry %s, you have been kicked by the IP filter" -- %s = name

IPFilter.BlacklistedIPs = {
    -- Lua patterns
    -- "%d.%d%.%d.1",
}

IPFilter.BlacklistedCountries = {
    -- country substrings, case insensitive
    -- "France",
}

hook.Add("CheckPassword","IPFilter",function(steamID64,ip,_,_,username)
    for _,pattern in ipairs(IPFilter.BlacklistedIPs) do
        if ip:match(pattern) then return true,string.format(IPFilter.KickMessage,username) end
    end

    http.Fetch(string.format("http://ip-api.com/json/%s",ip),function(body)
        local data = util.JSONToTable(body)
        local country = tostring(data.country):lower()
        
        for _,substring in ipairs(IPFilter.BlacklistedIPs) do
            if country:find(substring:lower(),1,true) then
                game.KickID(util.SteamIDFrom64(steamID64),string.format(IPFilter.KickMessage,username))
                
                return
            end
        end
    end)
end)