-- cheat_detection: A minetest addon that will check/target/ban players for potential abnormal behavior caused commonly by hacked clients -- Copyright (C) 2020 Genshin -- -- This program is free software: you can redistribute it and/or modify -- it under the terms of the GNU Affero General Public License as -- published by the Free Software Foundation, either version 3 of the -- License, or (at your option) any later version. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU Affero General Public License for more details. -- -- You should have received a copy of the GNU Affero General Public License -- along with this program. If not, see . --TODO: Test further to find additional false positives local enable_automod = minetest.settings:get('enable_cheat_detection_automod') or false local automod_type = minetest.settings:get('cheat_detection_automod_type') or "ban" local automod_reason = minetest.settings:get('cheat_detection_automod_reason') or "Excessive Cheating Attempts" local cheat_detection_step = tonumber(minetest.settings:get("cheat_detection_step")) or 0 local server_step = tonumber(minetest.settings:get("dedicated_server_step")) or 0.1 local patience_meter = 3 local cheat_patience_meter = 3 local node_under_height = 0.7 local server_host = minetest.settings:get("name") or "" local detection_list = {} local debug_hud_list = {} if enable_automod and type(enable_automod) == "string" then if enable_automod == "true" then enable_automod = true elseif enable_automod == "false" then enable_automod = false end end local function get_velocity_as_whole_interger(player, dir) local result = nil local velocity = player:get_player_velocity() local vel_x, vel_z = nil if dir == "horizontal" then local speed = nil vel_x = math.floor(velocity.x) vel_z = math.floor(velocity.z) if vel_x < 0 and vel_z >= 0 then vel_x = math.abs(vel_x) elseif vel_z < 0 and vel_x >= 0 then vel_z = math.abs(vel_x) end if vel_x > vel_z then speed = math.abs(vel_x) elseif vel_z > vel_x then speed = math.abs(vel_z) elseif vel_x == vel_z then speed = math.abs(vel_x or vel_z) end result = speed elseif dir == "vertical" then result = velocity.y end return result end --Patch for unknown block detection skipping, we really just need to get useful properties only anyway local function verify_node(node) local def = minetest.registered_nodes[node.name] --Is it a undefined block? if so generate some properties for it if def == nil then def = {walkable = true, drawtype = "normal"} end return def end local function add_tracker(player) local name = player:get_player_name() if not detection_list[name] then detection_list[name] = { suspicion = "None", prev_pos = {x = 0, y = 0, z = 0}, prev_velocity = {x = 0, y = 0, z = 0}, strikes = 0, patience_cooldown = 2, logged_in = true, logged_in_cooldown = 4, li_cd_full_time = 0, automod_triggers = 0, instant_punch_time = 0, anticheat_callout_time = 0, unhold_sneak_time = 0, liquid_walk_time = 0, flight_time = 0, time_resetted = false, falling_stops_time = 0, node_clipping_time = 0, flying = false, alert_sent = false, punched = false, falling = false, killaura = false, fast_dig = false, instant_break = false, abnormal_range = false, killaura_check = false, } end end local function update_tracker_info(player, list) local name = player:get_player_name() if detection_list[name] then detection_list[name] = list end end local function remove_tracker(player) local name = player:get_player_name() if detection_list[name] then detection_list[name] = nil end end local function get_tracker(player) local name = player:get_player_name() local result = nil if detection_list[name] then result = detection_list[name] end return result end local function cast_ray_under_player(player, range, objects, liquids) local pos = player:get_pos() objects = objects or false liquids = liquids or false --Raycast stuff. local ray_start = vector.add({x = pos.x, y = pos.y - 1, z = pos.z}, {x=0, y=0, z=0}) local ray_modif = vector.multiply({x = 0, y = -0.9, z = 0}, range) --point ray down local ray_end = vector.add(ray_start, ray_modif) local ray = minetest.raycast(ray_start, ray_end, objects, liquids) local object = ray:next() --Skip player's collision if object and object.type == "object" and object.ref == player then object = ray:next() end return object end local function cast_ray_under_pos(pos, range, objects, liquids) objects = objects or false liquids = liquids or false --Raycast stuff. local ray_start = vector.add({x = pos.x, y = pos.y - 0.1, z = pos.z}, {x=0, y=0, z=0}) local ray_modif = vector.multiply({x = 0, y = -0.9, z = 0}, range) --point ray down local ray_end = vector.add(ray_start, ray_modif) local ray = minetest.raycast(ray_start, ray_end, objects, liquids) local object = ray:next() -- return object end --check if player has a obstacle underneath him (Returns a boolean) local function check_obstacle_found_under(player, range) local result = false local object = cast_ray_under_player(player, range, true, true) if object and object.type then result = true end return result end --check if player has a obstacle underneath him and get their properties (Returns a table of properties, if failed returns nil) local function get_obstacle_found_under(player, range) local result = nil local object = cast_ray_under_player(player, range, true, true) if object and object.type then if object.type == "node" then local node = minetest.get_node(object.under) --We need to make sure this raycast does not grab air as it's final target if node then local def = verify_node(node) result = {name = node.name, type = "node", def = def} end elseif object.type == "object" and object.ref and not(object.ref:is_player() or object.ref == player) then local entity = object.ref:get_luaentity() result = {name = entity.name, type = "entity", def = entity} end end return result end --check if position has a node underneath it and get their properties (Returns a table of properties, if failed returns nil) local function get_node_under_ray(pos, range) local result = nil local object = cast_ray_under_pos(pos, range, false, true) if object and object.type and object.type == "node" then local node = minetest.get_node(object.under) --We need to make sure this raycast does not grab air as it's final target if node then local def = verify_node(node) result = def end end return result end --needed for flight check and jesus walk checks to prevent false positives by entity collision local function check_if_entity_under(pos) local entities = minetest.get_objects_inside_radius({x = pos.x, y = pos.y, z = pos.z}, 1) local result = false --look for physical objects only (TODO: convert method to raycast) for _,entity in pairs(entities) do if not entity:is_player() and entity:get_luaentity().physical == true then result = true break end end return result end local function check_player_is_inside_nodes(player) local pos = player:get_pos() local node_top = minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}) local node_bottom = minetest.get_node(pos) local result = false if node_top and node_bottom then node_top = minetest.registered_nodes[node_top.name] node_bottom = minetest.registered_nodes[node_bottom.name] if node_top and node_top.walkable and node_bottom and node_bottom.walkable then result = true end end return result end local function check_player_is_swimming(player) local pos = player:get_pos() local node_top = minetest.get_node({x = pos.x, y = pos.y + 1, z = pos.z}) local node_bottom = minetest.get_node(pos) local result = false if node_top and node_bottom then node_top = minetest.registered_nodes[node_top.name] node_bottom = minetest.registered_nodes[node_bottom.name] if type(node_top) == "table" and type(node_bottom) == "table" and (node_top.drawtype == "liquid" or node_top.drawtype == "flowingliquid" or node_bottom.drawtype == "liquid" or node_bottom.drawtype == "flowingliquid") then result = true end end return result end local function is_solid_node_under(pos, max_height) local result = false local y_steps = 0 local found = false while max_height > y_steps do local node = minetest.get_node({x = pos.x, y = pos.y - y_steps, z = pos.z}) if node and minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].drawtype ~= "airlike" and minetest.registered_nodes[node.name].walkable == true then found = true result = true elseif not minetest.registered_nodes[node.name] then --unknown block found = true result = true end if found then print(node.name) break end y_steps = y_steps + 1 end return result end --Check surroundings for nodes in a 3x3 block order (Returns specified node property value if successful, if not then it returns nil) local function check_surrounding_for_nodes(height, pos) local result = false local scan_tries = 8 --TODO: false positive - unable to grab slabs, fences and banners with raycast, make standard get_node() failsafe [Sneak Key] *facepalm... --Only scan for nearby nodes by 3x3 blocks while scan_tries > 0 do local new_pos = nil local node = nil if scan_tries == 8 then new_pos = {x = pos.x, y = pos.y + height, z = pos.z - 1} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 7 then new_pos = {x = pos.x - 1, y = pos.y + height, z = pos.z - 1} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 6 then new_pos = {x = pos.x + 1, y = pos.y + height, z = pos.z + 1} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 5 then new_pos = {x = pos.x - 1, y = pos.y + height, z = pos.z} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 4 then new_pos = {x = pos.x - 1, y = pos.y + height, z = pos.z + 1} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 3 then new_pos = {x = pos.x + 1, y = pos.y + height, z = pos.z - 1} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 2 then new_pos = {x = pos.x + 1, y = pos.y + height, z = pos.z} node = is_solid_node_under(new_pos, 4) elseif scan_tries == 1 then new_pos = {x = pos.x, y = pos.y + height, z = pos.z + 1} node = is_solid_node_under(new_pos, 4) end print(tostring(scan_tries)..") "..tostring(node)) if node == true then result = node break end scan_tries = scan_tries - 1 end return result end --Alert staff if goon is pulling hacks out of his own ass local function send_alert_to_serverstaff(suspect, suspicion) local players = minetest.get_connected_players() for _,player in pairs(players) do local name = player:get_player_name() local info = get_tracker(player) local is_staff = minetest.check_player_privs(name, {ban=true}) --Do not spam these alerts more than once per accusation since staff can get annoyed by accusation spam if is_staff == true then minetest.chat_send_player(name, minetest.colorize("#ffbd14" ,"*** "..os.date("%X")..":[CHEAT DETECTION]: Player ")..minetest.colorize("#FFFFFF", tostring(suspect))..minetest.colorize("#ffbd14" ," may be performing ")..minetest.colorize("#FF0004", tostring(suspicion))..minetest.colorize("#ffbd14" ," hacks!")) end end end local function check_if_forced_flying(player, info, pos, velocity, avg_rtt) local result = false --Skip flight check if punched or logged in if info.logged_in == true then return result elseif info.punched == true then return result end local name = player:get_player_name() local can_fly = minetest.check_player_privs(name, {fly=true}) local min_speed = tonumber(minetest.settings:get("movement_speed_fast")) or 20 local min_jump = tonumber(minetest.settings:get("movement_speed_jump")) or 6.5 local speed_mod = tonumber(player:get_physics_override().speed) local node_under = is_solid_node_under(pos, 1) local sneak_hold = player:get_player_control().sneak or false local object_under = check_obstacle_found_under(player, 1) local suspicious = false local delay = tonumber(patience_meter + avg_rtt) local node_type = "" min_speed = math.floor(speed_mod * min_speed) --Reset sneak unhold time if player is sneak glitching if sneak_hold == true then info.unhold_sneak_time = 0 end -- print(node_under, object_under, sneak_hold) if info.flying == true then suspicious = true end --check if they are standing still while hovering in the air if node_under == false and object_under == false and can_fly == false and pos.y == info.prev_pos.y and velocity.y == 0 and sneak_hold == false and info.flying == false then local was_falling = info.falling or false minetest.log("action", "[CHEAT DETECTION]: Player "..name.." triggered the Hover Check.") object_under = check_if_entity_under(pos) --Prevent/skip false positive to trigger by unloaded block lag when falling too fast or when a object is underneath or if he/she just had loggen in to spare them from a aggressive detection if was_falling == true or object_under == true then info.flight_time = 0 info.falling_stops_time = 0 if was_falling == true then info.falling = false minetest.log("action", "[CHEAT DETECTION]: Player "..name.." was falling down but was halted by unloaded blocks, No suspicious activity found.") elseif object_under == true then minetest.log("action", "[CHEAT DETECTION]: Player "..name.." is standing on a entity obstacle, No suspicious activity found.") end return result end local nodes_around = check_surrounding_for_nodes(2, pos) if nodes_around == false then info.unhold_sneak_time = info.unhold_sneak_time + 1 end --print("Sneak Unhold Time: "..tostring(info.unhold_sneak_time)) --Get triggered if the player has been caught constantly hovering up in the air if info.unhold_sneak_time >= delay then minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is hovering, Server has marked this as suspicious activity!") suspicious = true end --Check if player is indeed flying elseif node_under == false and object_under == false and can_fly == false and velocity.y > min_jump and info.flying == false then if info.flying == true then return true end minetest.log("action", "[CHEAT DETECTION]: Player "..name.." triggered the Flight Check.") --Reset Falling Stops Time due to Flight check info.falling_stops_time = 0 info.unhold_sneak_time = 0 info.falling = false --Check for vertical velocity change to determine if the player is actually flying local new_velocity = player:get_player_velocity() --Get triggered if the player has been constantly climbing up for far too long at a very steady pace if info.flight_time >= delay then minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is continuously increasing vertical velocity too many times. Server has marked this as suspicious activity!") suspicious = true --If bastard is constantly acsending steadily at max speed, then he's flying like a little twat. add flight time elseif new_velocity.y == min_speed then info.flight_time = info.flight_time + 1 --If a player suddently begins dropping vertical velocity, then they might be falling elseif new_velocity.y < info.prev_velocity.y then minetest.log("action", "[CHEAT DETECTION]: Player "..name.." seem to be dropping vertical velocity due to falling. No suspicious activity found.") --If a player is not flying, they can't be able to keep the same ammount of previous vertical velocity or constantly increasing their vertical velocity, if so they are really flying high elseif new_velocity.y >= info.prev_velocity.y and new_velocity.y < min_speed then info.prev_velocity = new_velocity info.flight_time = info.flight_time + 1 end --print("Flight Time: "..tostring(info.flight_time)) --Check if player is falling, or flying (false positives found) elseif node_under == false and object_under == false and can_fly == false and velocity.y < -min_jump and info.flying == false then if info.flying == true then return true end minetest.log("action", "[CHEAT DETECTION]: Player "..name.." triggered the Fall Check.") --Reset Flight Time due to Falling check info.flight_time = 0 info.unhold_sneak_time = 0 --Check for vertical velocity change to determine if the player is actually flying local new_velocity = player:get_player_velocity() --print(new_velocity.y, info.prev_velocity.y) --If still falling, then stop this... if info.falling == true then info.prev_velocity = new_velocity info.falling_stops_time = 0 return result --Get triggered if the player has been constantly stopping from falling for far too long at a very steady pace elseif info.falling_stops_time >= delay then info.prev_velocity = new_velocity minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is continuously stopping from falling down too many times. Server has marked this as suspicious activity!") suspicious = true --If bastard is constantly decsending steadily at max speed, then he's flying like a little twat. add falling stop time elseif new_velocity.y == -min_speed then info.prev_velocity = new_velocity info.falling_stops_time = info.falling_stops_time + 1 --if falling down, reset timer elseif new_velocity.y < info.prev_velocity.y and new_velocity.y > -min_speed then info.prev_velocity = new_velocity info.falling_stops_time = 0 --If a player suddently begins dropping vertical velocity above max speed, then they are indeed falling elseif new_velocity.y < -min_speed then minetest.log("action", "[CHEAT DETECTION]: Player "..name.." is confirmed falling. No suspicious activity found.") info.prev_velocity = new_velocity info.falling = true is_solid_node --If a player is falling, they can't be able to suddenly increase vertical velocity or make their velocity stay the same elseif new_velocity.y >= info.prev_velocity.y then minetest.log("action", "[CHEAT DETECTION]: Player "..name.." suddenly stopped falling (Could be due to unloaded blocks or lag), verifying behavior...") info.prev_velocity = new_velocity info.falling_stops_time = info.falling_stops_time + 1 end --Get triggered if the player has been constantly climbing up for far too long if info.falling_stops_time >= delay then suspicious = true end --print("Fall Time: "..tostring(info.falling_stops_time)) --Just a normal player doing normal things, reset timers elseif node_under == true or object_under == true then suspicious = false info.flying = false info.falling = false info.unhold_sneak_time = 0 info.flight_time = 0 info.falling_stops_time = 0 end if suspicious == true then info.flying = true result = true end return result end local function check_if_forced_noclipping(player, info, velocity, avg_rtt) local result = false --Skip Noclip check if punched if info.punched == true then return result end local name = player:get_player_name() local delay = tonumber(patience_meter + avg_rtt) local can_noclip = minetest.check_player_privs(name, {noclip=true}) local inside_nodes = check_player_is_inside_nodes(player) --if someone is inside a solid node then they shouldn't be moving at all, if they are then it's clearly due to noclipping if inside_nodes == true and can_noclip == false and (velocity.x > 5 or velocity.x < -5 or velocity.z > 5 or velocity.z < -5) then info.node_clipping_time = info.node_clipping_time + 1 if info.node_clipping_time > delay then minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is clipping through solid nodes while moving without noclip privileges. Server has marked this as suspicious activity!") info.strikes = 3 result = true end else info.node_clipping_time = 0 end return result end local function check_if_forced_fast(player, info) local result = false --Skip Jesus Walk check if punched if info.punched == true then return result end local aux_pressed = player:get_player_control().aux1 --if player is not pressing sprint key, skip this check if aux_pressed == false then return result end local name = player:get_player_name() local current_speed = get_velocity_as_whole_interger(player, "horizontal") local min_speed = tonumber(minetest.settings:get("movement_speed_fast")) or 20 local detection_fast_speed = nil local can_fast = minetest.check_player_privs(name, {fast=true}) local speed_mod = tonumber(player:get_physics_override().speed) local f = math.floor --This is needed to determine if user is speeding, subtract 1 for fast speed accuracy min_speed = math.floor(speed_mod * min_speed) detection_fast_speed = math.floor(min_speed - 1) if can_fast == false and (current_speed == min_speed or current_speed == detection_fast_speed) then minetest.log("warning", "[CHEAT DETECTION]: Player "..name.."\'s speed went past the server\'s max speed without fast privs too many times. Server has marked this as suspicious activity!") result = true end return result end local function check_if_jesus_walking(player, info, pos, velocity, avg_rtt) local result = false --Skip Jesus Walk check if punched if info.punched == true then return result end local name = player:get_player_name() local obstacle_under = get_obstacle_found_under(player, 1) local node_under = "not found" local swimming = check_player_is_swimming(player) local sneak_hold = player:get_player_control().sneak or false local delay = tonumber(patience_meter + avg_rtt) if obstacle_under and obstacle_under.type == "node" and obstacle_under.def.drawtype then node_under = obstacle_under.def.drawtype end --If someone is able to stand still on a liquid type node, then they are clearly walking on water if swimming == false and (node_under == "liquid" or node_under == "flowingliquid") and pos.y == info.prev_pos.y and velocity.y == 0 and sneak_hold == false then local object_under = check_if_entity_under(pos) if object_under == false then info.node_clipping_time = info.node_clipping_time + 1 info.liquid_walk_time = info.liquid_walk_time + 1 print("Liquid Walk Time: "..tostring(info.liquid_walk_time)) end else info.liquid_walk_time = 0 end --Get triggered if the player has been constantly walking on water for far too long if info.liquid_walk_time >= delay then minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is litteraly standing on water, Server has marked this as suspicious activity!") info.strikes = 3 result = true end return result end local function verify_suspicious_behavior(info, suspicion, avg_rtt) local timer_step = tonumber(cheat_detection_step + avg_rtt) minetest.after(timer_step, function() info.strikes = info.strikes + 1 end) --Don't go past 3 strikes if info.strikes >= 3 then info.suspicion = suspicion info.strikes = 3 info.patience_cooldown = 2 end end --Enable Server Anti-Cheat System if Player Manager is Present, keep an eye out for suspicious activity local function handle_cheat_detection() local players = minetest.get_connected_players() for _,player in pairs(players) do local pname = player:get_player_name() local pos = player:get_pos() local velocity = player:get_player_velocity() local is_superuser = minetest.check_player_privs(pname, {server=true}) local pinfo = minetest.get_player_information(pname) --this is important local info = get_tracker(player) local smite = false if pinfo and info and pname ~= server_host and is_superuser == false then --If detection step is too fast, slow down the cooldown timer so some detection algorythms are less aggressive when a player reconnects to the server after jumping if info.logged_in == true and info.logged_in_cooldown > 0 and cheat_detection_step < 0.3 and server_step <= 0.1 then info.li_cd_full_time = info.li_cd_full_time + 1 if info.li_cd_full_time > 15 then info.logged_in_cooldown = info.logged_in_cooldown - 1 info.li_cd_full_time = 0 end if info.logged_in_cooldown < 1 then info.logged_in = false info.logged_in_cooldown = nil end --If detection step is at a balanced rate, then normally count down without any further delay elseif info.logged_in == true and info.logged_in_cooldown > 0 and (cheat_detection_step >= 0.3 or server_step >= 0.1) then info.logged_in_cooldown = info.logged_in_cooldown - 1 if info.logged_in_cooldown < 1 then info.logged_in = false info.logged_in_cooldown = nil end end --Scan players every single average round trip time for accuracy minetest.after(pinfo.avg_rtt, function() info.time_resetted = false --Only do debug for dummy test hacker client to see what's up whith him if pname == "haxor" then update_debug_hud(player, false) end local is_jesus_walking = check_if_jesus_walking(player, info, pos, velocity, pinfo.avg_rtt) local is_force_noclipping = check_if_forced_noclipping(player, info, velocity, pinfo.avg_rtt) local is_force_fast = check_if_forced_fast(player, info) local is_force_flying = check_if_forced_flying(player, info, pos, velocity, pinfo.avg_rtt) --Hmm, I sense suspicious activity in this sector... [Killaura] if info.killaura == true then verify_suspicious_behavior(info, "Killaura", pinfo.avg_rtt) info.killaura_check = false info.killaura = false --Hmm, I sense suspicious activity in this sector... [Unlimited Range] elseif info.abnormal_range == true then verify_suspicious_behavior(info, "Unlimited Range", pinfo.avg_rtt) info.abnormal_range = false --Hmm, I sense suspicious activity in this sector... [Instant Break] elseif info.instant_break == true then verify_suspicious_behavior(info, "Instant Node Break", pinfo.avg_rtt) info.instant_break = false --Hmm, I sense suspicious activity in this sector... [Fast Dig] elseif info.fast_dig == true then verify_suspicious_behavior(info, "Fast Dig", pinfo.avg_rtt) info.fast_dig = false --Hmm, I sense suspicious activity in this sector... [Walk on Water Hacks] elseif is_jesus_walking == true then verify_suspicious_behavior(info, "Jesus Walk", pinfo.avg_rtt) --Hmm, I sense suspicious activity in this sector... [Noclip Hacks] elseif is_force_noclipping == true then verify_suspicious_behavior(info, "Forced Noclip", pinfo.avg_rtt) --Hmm, I sense suspicious activity in this sector... [Fast Hacks] elseif is_force_fast == true then verify_suspicious_behavior(info, "Forced Fast", pinfo.avg_rtt) --Hmm, I sense suspicious activity in this sector... [Fly Hacks] elseif is_force_flying == true then verify_suspicious_behavior(info, "Forced Fly", pinfo.avg_rtt) --So far so good, nothing to see here (Reset timers and strikes) else info.patience_cooldown = info.patience_cooldown - 1 if info.patience_cooldown < 1 then info.time_resetted = true info.automod_triggers = 0 info.patience_cooldown = 2 end end --Send Warning after 3 strikes, then reset. Following up with patience meter to drop if info.strikes == 3 and info.suspicion ~= "None" then send_alert_to_serverstaff(pname, info.suspicion) if info.alert_sent == false then minetest.log("warning", "[CHEAT DETECTION]: Player "..pname.." have been flagged by the Server for possibly using a Hacked Client!") minetest.chat_send_player(pname, minetest.colorize("#ffbd14" ,"*** "..os.date("%X")..":[CHEAT DETECTION]: You have been flagged by the Server for possibly using a Hacked Client. Our server staff have been alerted!")) info.alert_sent = true end if enable_automod == true then local delay = tonumber(patience_meter + pinfo.avg_rtt) info.automod_triggers = info.automod_triggers + 1 if info.automod_triggers >= delay then smite = true end end info.strikes = 0 elseif info.strikes == 3 and info.suspicion == "None" then info.strikes = 0 end --I ran out of patience, please for the love of god Let me BAN this sneaky little twat NOW!!! if smite and enable_automod == true then info.automod_triggers = 0 if automod_type == "kick" then minetest.log("action", "[CHEAT DETECTION]: Server has kicked "..pname.." for performing continuous abnormal behaviors while in-game.") minetest.kick_player(pname, "Cheat Detection: "..automod_reason) elseif automod_type == "ban" then minetest.log("action", "[CHEAT DETECTION]: Server has banned "..pname.." for performing continuous abnormal behaviors while in-game.") minetest.ban_player(pname) end end info.punched = false info.prev_velocity = velocity info.prev_pos = pos update_tracker_info(player, info) end) end end minetest.after(cheat_detection_step, function() handle_cheat_detection() end) end minetest.register_on_mods_loaded(function() handle_cheat_detection() end) minetest.register_on_leaveplayer(function(player) remove_tracker(player) update_debug_hud(player, true) end) minetest.register_on_joinplayer(function(player) --Add the dang tracker onto the specified player add_tracker(player) end) --Additional Anti-Hackerman stuff minetest.register_on_cheat(function(player, cheat) local info = get_tracker(player) --Skip shenanigain check if player is punched, this is for knockback exceptions if info.punched == true or info.killaura_check == true then return end local name = player:get_player_name() local pinfo = minetest.get_player_information(name) local delay = tonumber(cheat_patience_meter + pinfo.avg_rtt) local accusation = nil if cheat.type == "interacted_too_far" then info.anticheat_callout_time = info.anticheat_callout_time + 1 accusation = "unlimitedrange" elseif cheat.type == "dug_unbreakable" then info.anticheat_callout_time = info.anticheat_callout_time + 1 accusation = "instantbreak" elseif cheat.type == "dug_too_fast" then info.anticheat_callout_time = info.anticheat_callout_time + 1 accusation = "fastdig" end --Hackers normally do things very quickly if accusation and info.anticheat_callout_time > delay then if accusation == "instantbreak" then info.instant_break = true minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is trying to instantly break unbreakable nodes too many times. Server has marked this as suspicious activity!") elseif accusation == "fastdig" then info.fast_dig = true minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is trying to instantly dig nodes too many times. Server has marked this as suspicious activity!") elseif accusation == "unlimitedrange" then info.abnormal_range = true minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is trying to do long range interactions too many times. Server has marked this as suspicious activity!") end info.anticheat_callout_time = 0 end end) minetest.register_on_punchplayer(function(player, hitter, punchtime) local info = get_tracker(player) local name = nil local info2 = nil local pinfo = nil local delay = nil --Knockback Exceptions if info then info.punched = true end if hitter:is_player() then name = hitter:get_player_name() info2 = get_tracker(hitter) pinfo = minetest.get_player_information(name) delay = tonumber(patience_meter + pinfo.avg_rtt - 1) end --killaura detection, there is absolutely no flipping way any normal human being can land a 0 second punch repeatedly (No Mercy for these scrubs) if info2 and punchtime <= 0 then info2.killaura_check = true info2.instant_punch_time = info2.instant_punch_time + 1 --Confirm killaura behavior if player instantly punched a player too many times if info2.instant_punch_time > delay then info2.killaura = true minetest.log("warning", "[CHEAT DETECTION]: Player "..name.." is instantly punching players too many times. Server has marked this as suspicious activity!") end elseif info2 and punchtime > 0 then info2.instant_punch_time = 0 end end)