(placeholder?) initial add spamprevention by krock
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mods/player_spam/depends.txt
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mods/player_spam/depends.txt
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mods/player_spam/init.lua
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mods/player_spam/init.lua
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-- Untested mod to prevent from chat flood
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-- Allows players to send 4 messages in 2s when a silence of >= 2s follows
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-- Created by Krock <mk939@ymail.com> - 2016
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-- License: BSD 3-Clause
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-- ALL YOUR BUG REPORT ARE BELONG TO ME
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local player_spam = {}
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local CHAR_REPEAT_MAX = 4
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minetest.register_on_chat_message(function(name, msg)
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if msg == "" or msg:sub(1, 1) == '/' then
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return
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end
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if not minetest.check_player_privs(name, {shout = true}) then
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minetest.chat_send_player(name, "You can not chat. Missing privilege: shout")
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return true
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end
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local count_as_messages = math.max(1, math.min(msg:len() / 100, 5))
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player_spam[name] = (player_spam[name] or 0) + math.floor(count_as_messages + 0.5)
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if player_spam[name] > 5 then
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minetest.kick_player(name, "You spammer you!")
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return true
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end
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if player_spam[name] > 3 then
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-- A message per second maximal
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minetest.chat_send_player(name, "Your message was not sent due to flood detection. "..
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"Please try again in some seconds.")
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return true
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end
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local new_msg = ""
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local last_char
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local same_char_count = 0
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-- Prevent from repetive characters
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for c in msg:gmatch(".") do
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if c:byte() < 0x20 then
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c = ' '
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end
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if last_char == c:lower() then
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same_char_count = same_char_count + 1
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else
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last_char = c:lower()
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same_char_count = 0
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end
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if same_char_count < CHAR_REPEAT_MAX then
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new_msg = new_msg .. c
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end
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end
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if new_msg == msg then
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return -- Nothing to replace (message ok)
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end
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for i, player in pairs(minetest.get_connected_players()) do
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local player_name = player:get_player_name()
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if player_name ~= name then
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minetest.chat_send_player(player_name, "<"..name.."> " .. new_msg)
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end
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end
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--if new_msg:len() < msg:len() then
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-- minetest.chat_send_player(name, "Your message was shortened a bit to prevent from spam.")
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--end
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return true
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end)
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local timed = 0
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-- 1 message per second, decrease message count by X all X seconds
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local CHECK_COUNT = 2
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minetest.register_globalstep(function(dtime)
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timed = timed + dtime
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if timed < CHECK_COUNT then
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return
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end
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timed = 0
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for i, player in pairs(minetest.get_connected_players()) do
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local player_name = player:get_player_name()
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local num = player_spam[player_name]
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if num and num > 0 then
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player_spam[player_name] = math.max(0, num - CHECK_COUNT)
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end
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end
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end)
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minetest.register_on_leaveplayer(function(player)
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player_spam[player:get_player_name()] = nil
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end)
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