forked from MineClone5/MineClone5
113 lines
3.0 KiB
Lua
113 lines
3.0 KiB
Lua
local ban_spammers = true
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local kick_spammers = true
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local revoke_shout_for_spammers = true
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local limit_messages = 10
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local limit_message_length = 200
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local block_special_chars = true
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local enable_antispam = ban_spammers or kick_spammers or revoke_shout_for_spammers
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local function update_settings()
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ban_spammers = minetest.settings:get_bool("ban_spammers", true)
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kick_spammers = minetest.settings:get_bool("kick_spammers", true)
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revoke_shout_for_spammers = minetest.settings:get_bool("revoke_shout_for_spammers", true)
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limit_messages = tonumber(minetest.settings:get("limit_messages") or 10)
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limit_message_length = tonumber(minetest.settings:get("limit_message_length") or 200)
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block_special_chars = minetest.settings:get_bool("block_special_chars", true)
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enable_antispam = ban_spammers or kick_spammers or revoke_shout_for_spammers
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minetest.after(7, update_settings)
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end
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update_settings()
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local last_messages = {}
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local exceeders = {}
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local special_users = {}
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local function ban(name)
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if revoke_shout_for_spammers then
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local privs = minetest.get_player_privs(name)
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if privs then
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privs.shout = nil
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minetest.set_player_privs(name, privs)
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end
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end
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if ban_spammers then
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minetest.ban_player(name)
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elseif kick_spammers then
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minetest.kick_player(name)
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end
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end
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local last_char = string.char(127)
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local function on_chat_message(name, message)
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if not enable_antispam then return end
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local length = message:len()
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if last_messages.job then
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last_messages.job:cancel()
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last_messages.job = nil
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end
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if last_messages.name and last_messages.name == name then
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last_messages.count = last_messages.count + 1
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last_messages.summary_length = last_messages.summary_length + length
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if last_messages.count >= limit_messages then
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ban(name)
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end
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else
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last_messages.name = name
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last_messages.count = 1
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last_messages.summary_length = length
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end
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last_messages.job = minetest.after(30, function()
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last_messages.name = nil
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last_messages.job = nil
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end)
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if limit_message_length > 0 and message:len() > limit_message_length then
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if exceeders[name] then
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exceeders[name] = exceeders[name] + 1
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if exceeders[name] > limit_messages then
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ban(name)
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end
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else
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exceeders[name] = 1
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end
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message = message:sub(1, limit_message_length) .. ">8 >8 >8"
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minetest.chat_send_all("<" .. name .. "> " .. message)
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return true
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else
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if exceeders[name] then
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exceeders[name] = nil
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end
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end
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if block_special_chars then
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local sc = false
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local msg = ""
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for i = 1, #message do
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local c = message:sub(i,i)
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if c >= " " and c <= last_char then
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msg = msg .. c
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else
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sc = true
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end
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end
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if sc then
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if special_users[name] then
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special_users[name] = special_users[name] + 1
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if special_users[name] > limit_messages then
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ban(name)
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end
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else
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special_users[name] = 1
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end
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message = msg
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minetest.chat_send_all("<" .. name .. "> " .. message)
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return true
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else
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if special_users[name] then
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special_users[name] = nil
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end
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end
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end
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end
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minetest.register_on_chat_message(on_chat_message)
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