add chatdam mod, [server_essensials] update

minetest.conf

@@ -37,15 +37,16 @@ give_initial_stuff = true
 disable_fire = true
 playereffects_autosave = 60
 enable_sprinting = true
-static_spawnpoint = -2770,25,2327
+static_spawnpoint = 16390,28,20401
 enable_tnt = false
 protector_hurt = 0
 protector_flip = true
 protector_spawn = 10
 protector_pvp = true
-name_restrictions.pronounceability = # nil=disalbed
+name_restrictions.pronounceability =  # nil=disalbed, 0=everything blocked, .5=strict, 1=normal, 2=relaxed
 day_time_ratio = 75
 night_time_ratio = 25
+maximum_characters_per_message = 300
 #
 #################IRC################
 #

worldmods/chatdam/init.lua

@@ -0,0 +1,60 @@
+--[[
+--	That Dam Chat
+--	Wait, it's a Chat Dam
+--	Anyway, the pun failed
+--
+--	License : WTFPL
+--	ßÿ Lymkwi/LeMagnesium/Mg
+--
+--]]
+
+chatdam = {}
+
+chatdam.data = {}
+
+-- Retrieve some config stuff
+chatdam.conf = {}
+chatdam.conf.MAXIMUM_CHARACTERS_PER_MESSAGE = tonumber(minetest.setting_get("maximum_characters_per_message") or "255")
+chatdam.conf.MAXIMUM_MESSAGES_PER_INTERVAL = tonumber(minetest.setting_get("maximum_messages_per_interval") or "3")
+chatdam.conf.FLOOD_INTERVAL = tonumber(minetest.setting_get("flood_interval") or "2")
+
+-- Main control function. A real nightmare for flooders.
+function chatdam.floodcontrol(name, message)
+	local violation
+
+	-- Kick for message length
+	if message:len() > chatdam.conf.MAXIMUM_CHARACTERS_PER_MESSAGE then
+		violation = ("Your sent a message with more characters\nthan allowed (%s maximum)"):format(chatdam.conf.MAXIMUM_CHARACTERS_PER_MESSAGE)
+	end
+
+	-- Kick for message frequency
+	local rightnow = tonumber(os.date("%s"))
+	-- By the power of maths I check the last <interval> seconds
+	if rightnow > chatdam.data[name].lastmsg+chatdam.conf.FLOOD_INTERVAL then
+		chatdam.data[name].msgs = 1
+		chatdam.data[name].lastmsg = rightnow
+	else
+		chatdam.data[name].msgs = chatdam.data[name].msgs + 1
+		if chatdam.data[name].msgs > chatdam.conf.MAXIMUM_MESSAGES_PER_INTERVAL then
+			violation = ("You sent too many messages in a short\namount of time (maximum allowed is %s for %s seconds)"):format(chatdam.conf.MAXIMUM_MESSAGES_PER_INTERVAL, chatdam.conf.FLOOD_INTERVAL)
+		end
+	end
+
+	if violation then
+		minetest.kick_player(name, violation)
+		return true -- Cancel anything that might happen after, and the engine's response, which is to send the message
+	end
+end
+minetest.register_on_chat_message(chatdam.floodcontrol)
+
+-- We create tracking data for the players' messages here...
+minetest.register_on_joinplayer(function(pref)
+	chatdam.data[pref:get_player_name()] = {lastmsg=0, msgs=0}
+end)
+
+-- ... and we discard it here
+minetest.register_on_leaveplayer(function(pref)
+	chatdam.data[pref:get_player_name()] = nil
+end)
+
+minetest.log("[ChatDam] Loaded")

worldmods/chatdam/readme.md

@@ -0,0 +1,19 @@
+## [chatdam]
+### A mod to control chat spam and flooding.
+--
+--	That Dam Chat
+--	Wait, it's a Chat Dam
+--	Anyway, the pun failed
+--
+--	License : WTFPL
+--	ßÿ Lymkwi/LeMagnesium/Mg
+--
+
+#### minetest.conf settings:
+
+-- Spam control
+maximum_characters_per_message = 255  -- Max allowed characters in a single chat message.
+
+-- Flood control
+flood_interval = 2 -- Interval in seconds that is checked for flooding.
+maximum_messages_per_interval = 3  -- Max allowed chat messages per interval.

worldmods/server_essentials/init.lua

@@ -316,7 +316,9 @@ minetest.register_on_newplayer(function(player)
 	end
 end)
 
-minetest.register_on_chat_message(function(name, message)
+
+-- Disabled, this is handled by [chatdam] mod.
+--[[minetest.register_on_chat_message(function(name, message)
 	if KICK_CHATSPAM and not minetest.check_player_privs(name, {chatspam=true}) and
 			string.len(message) > MAX_CHAT_MSG_LENGTH then
 		minetest.kick_player(name,
@@ -327,6 +329,7 @@ minetest.register_on_chat_message(function(name, message)
 	end
 	return
 end)
+--]]
 
 minetest.register_globalstep(function(dtime)
 	-- Loop through all connected players

worldmods/server_essentials/settings.lua

@@ -15,9 +15,12 @@ FIRST_TIME_JOIN_MSG = " has joined the server for the first time, Welcome!"
 -- All messages sent with the /broadcast command will be prefixed with this
 BROADCAST_PREFIX = "[SERVER]"
 
+-- Disabled, this is handled by [chatdam] mod.
+--[[
 -- If true, players who send a chat message longer than MAX_CHAT_MSG_LENGTH will be kicked
 KICK_CHATSPAM = true
 MAX_CHAT_MSG_LENGTH = 300
+--]]
 
 -- Delay in seconds that will occur between issuing /spawn command and actually being teleported to the static_spawnpoint
 SPAWN_DELAY = 0