Mod to kick idle players

README.md

@@ -10,6 +10,7 @@ Each mod in the pack is effectively independent, with minimal or no dependencies
 - `szutil_controlhud`: Togglable on-screen input control HUD, useful for demo recording.
 - `szutil_fixhack`: Fix lighting and fluid bugs automatically and continuously in background.
 - `szutil_givemenu`: Menu-driven searchable version of the /give command.
+- `szutil_idlekick`: Automatically kick idle players after a timeout.
 - `szutil_lagometer`: Optional on-screen server performance meter HUD.
 - `szutil_logtrace`: Allow privileged players to monitor server debug trace in chat.
 - `szutil_maplimitfx`: Display particle visual at hard map boundaries.

TODO

@@ -1,5 +1,7 @@
 ------------------------------------------------------------------------
 
+- settingtypes.txt for all mods
+
 - Delayed privileges mod
 	- Countdown modes:
 		- Always-running countdown
@@ -18,6 +20,14 @@
 		- Use other mods that interact w/ privs
 		- Allow creation waiting period via default_privs, motdagree
 
+- MOTD Agree mod
+	- Initial waiting period in seconds
+	- Queue system, limit number of players eligible to agree to
+	  rules at the same time
+	- Require another priv to be able to register (allow use of delayed
+	  privs mod)
+	- Limit time player is allowed to be eligible before kick
+
 - Command alias mod
 	- Allow players to register short command aliases
 		- Store in player metadata per-player

szutil_idlekick/README

@@ -0,0 +1,18 @@
+------------------------------------------------------------------------
+
+This mod kicks players who have been idle (no evidence of any input for
+a certain amount of time) automatically.  This can be used to prevent
+players from idling on a server and using resources, or to automatically
+disconnect connected devices so players can hop onto a different
+device even if they left the original device unattended but running.
+
+The timeout is controlled by the szutil_idlekick_timeout setting, in
+seconds, defaulting to 600 (10 minutes).  The kick reason message can
+be customized via szutil_idlekick_reason.
+
+If the szutil_idlekick_invert setting is false, then all players are
+subject to idle timeout kicks, except those with the szutil_idlekick
+privilege.  If true, then only those with the szutil_idlekick priv are
+automatically kicked.
+
+------------------------------------------------------------------------

szutil_idlekick/init.lua

@@ -0,0 +1,56 @@
+-- LUALOCALS < ---------------------------------------------------------
+local minetest, pairs, tonumber
+    = minetest, pairs, tonumber
+-- LUALOCALS > ---------------------------------------------------------
+
+local modname = minetest.get_current_modname()
+
+local invert = minetest.settings:get_bool(modname .. "_invert")
+local timeout = tonumber(minetest.settings:get(modname .. "_timeout")) or 600
+local reason = minetest.settings:get(modname .. "_reason") or "idle timeout"
+
+minetest.register_privilege(modname, {
+		description = (invert and "Kick" or "Do not kick") .. " this player when idle",
+		give_to_singleplayer = false,
+		give_to_admin = false
+	})
+
+local times = {}
+
+local function now() return minetest.get_us_time() / 1000000 end
+local function bumpn(pname) times[pname] = now() return pname end
+local function bump(player)
+	if not (player and player.get_player_name) then return end
+	local pname = player:get_player_name()
+	if not pname then return end
+	return bumpn(pname)
+end
+
+minetest.register_on_joinplayer(function(player) return bump(player) end)
+minetest.register_on_placenode(function(_, _, player) return bump(player) end)
+minetest.register_on_dignode(function(_, _, player) return bump(player) end)
+minetest.register_on_punchnode(function(_, _, player) return bump(player) end)
+minetest.register_on_chat_message(function(pname) bumpn(pname) end)
+minetest.register_on_player_receive_fields(function(player) return bump(player) end)
+minetest.register_on_craft(function(_, player) return bump(player) end)
+minetest.register_on_player_inventory_action(function(player) return bump(player) end)
+
+local looks = {}
+local function checkplayer(player)
+	local pname = player:get_player_name()
+	local look = player:get_look_dir()
+	local old = looks[pname]
+	looks[pname] = look
+	if player:get_player_control_bits() ~= 0 then return bumpn(pname) end
+	if not (old and vector.equals(old, look)) then return bumpn(pname) end
+	return pname
+end
+minetest.register_globalstep(function()
+		for _, player in pairs(minetest.get_connected_players()) do
+			if (not minetest.check_player_privs(player, modname)) ~= (not invert) then return end
+			local pname = checkplayer(player)
+			if times[pname] < now() - timeout then
+				minetest.kick_player(pname, reason)
+			end
+		end
+	end)

szutil_idlekick/mod.conf

@@ -0,0 +1 @@
+name = szutil_idlekick