mirror of
https://github.com/minetest-mods/xban2.git
synced 2024-11-18 05:50:23 +01:00
419 lines
9.9 KiB
Lua
419 lines
9.9 KiB
Lua
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xban = { MP = minetest.get_modpath(minetest.get_current_modname()) }
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dofile(xban.MP.."/serialize.lua")
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local db = { }
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local tempbans = { }
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local DEF_SAVE_INTERVAL = 300 -- 5 minutes
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local DEF_DB_FILENAME = minetest.get_worldpath().."/xban.db"
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local DB_FILENAME = minetest.settings:get("xban.db_filename")
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local SAVE_INTERVAL = tonumber(
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minetest.settings:get("xban.db_save_interval")) or DEF_SAVE_INTERVAL
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if (not DB_FILENAME) or (DB_FILENAME == "") then
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DB_FILENAME = DEF_DB_FILENAME
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end
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local function make_logger(level)
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return function(text, ...)
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minetest.log(level, "[xban] "..text:format(...))
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end
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end
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local ACTION = make_logger("action")
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local WARNING = make_logger("warning")
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local unit_to_secs = {
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s = 1, m = 60, h = 3600,
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D = 86400, W = 604800, M = 2592000, Y = 31104000,
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[""] = 1,
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}
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local function parse_time(t) --> secs
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local secs = 0
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for num, unit in t:gmatch("(%d+)([smhDWMY]?)") do
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secs = secs + (tonumber(num) * (unit_to_secs[unit] or 1))
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end
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return secs
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end
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local function concat_keys(t, sep)
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local keys = {}
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for k, _ in pairs(t) do
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keys[#keys + 1] = k
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end
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return table.concat(keys, sep)
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end
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function xban.find_entry(player, create) --> entry, index
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for index, e in ipairs(db) do
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for name in pairs(e.names) do
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if name == player then
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return e, index
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end
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end
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end
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if create then
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print(("Created new entry for `%s'"):format(player))
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local e = {
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names = { [player]=true },
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banned = false,
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record = { },
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}
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table.insert(db, e)
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return e, #db
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end
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return nil
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end
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function xban.get_info(player) --> ip_name_list, banned, last_record
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local e = xban.find_entry(player)
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if not e then
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return nil, "No such entry"
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end
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return e.names, e.banned, e.record[#e.record]
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end
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function xban.ban_player(player, source, expires, reason) --> bool, err
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if xban.get_whitelist(player) then
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return nil, "Player is whitelisted; remove from whitelist first"
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end
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local e = xban.find_entry(player, true)
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if e.banned then
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return nil, "Already banned"
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end
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local rec = {
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source = source,
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time = os.time(),
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expires = expires,
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reason = reason,
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}
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table.insert(e.record, rec)
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e.names[player] = true
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local pl = minetest.get_player_by_name(player)
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if pl then
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local ip = minetest.get_player_ip(player)
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if ip then
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e.names[ip] = true
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end
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e.last_pos = pl:getpos()
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end
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e.reason = reason
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e.time = rec.time
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e.expires = expires
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e.banned = true
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local msg
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local date = (expires and os.date("%c", expires)
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or "the end of time")
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if expires then
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table.insert(tempbans, e)
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msg = ("Banned: Expires: %s, Reason: %s"):format(date, reason)
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else
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msg = ("Banned: Reason: %s"):format(reason)
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end
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for nm in pairs(e.names) do
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minetest.kick_player(nm, msg)
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end
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ACTION("%s bans %s until %s for reason: %s", source, player,
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date, reason)
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ACTION("Banned Names/IPs: %s", concat_keys(e.names, ", "))
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return true
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end
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function xban.unban_player(player, source) --> bool, err
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local e = xban.find_entry(player)
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if not e then
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return nil, "No such entry"
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end
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local rec = {
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source = source,
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time = os.time(),
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reason = "Unbanned",
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}
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table.insert(e.record, rec)
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e.banned = false
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e.reason = nil
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e.expires = nil
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e.time = nil
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ACTION("%s unbans %s", source, player)
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ACTION("Unbanned Names/IPs: %s", concat_keys(e.names, ", "))
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return true
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end
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function xban.get_whitelist(name_or_ip)
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return db.whitelist and db.whitelist[name_or_ip]
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end
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function xban.remove_whitelist(name_or_ip)
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if db.whitelist then
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db.whitelist[name_or_ip] = nil
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end
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end
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function xban.add_whitelist(name_or_ip, source)
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local wl = db.whitelist
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if not wl then
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wl = { }
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db.whitelist = wl
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end
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wl[name_or_ip] = {
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source=source,
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}
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return true
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end
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function xban.get_record(player)
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local e = xban.find_entry(player)
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if not e then
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return nil, ("No entry for `%s'"):format(player)
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elseif (not e.record) or (#e.record == 0) then
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return nil, ("`%s' has no ban records"):format(player)
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end
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local record = { }
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for _, rec in ipairs(e.record) do
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local msg = rec.reason or "No reason given."
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if rec.expires then
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msg = msg..(", Expires: %s"):format(os.date("%c", e.expires))
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end
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if rec.source then
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msg = msg..", Source: "..rec.source
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end
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table.insert(record, ("[%s]: %s"):format(os.date("%c", e.time), msg))
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end
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local last_pos
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if e.last_pos then
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last_pos = ("User was last seen at %s"):format(
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minetest.pos_to_string(e.last_pos))
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end
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return record, last_pos
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end
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minetest.register_on_prejoinplayer(function(name, ip)
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local wl = db.whitelist or { }
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if wl[name] or wl[ip] then return end
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local e = xban.find_entry(name) or xban.find_entry(ip)
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if not e then return end
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if e.banned then
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local date = (e.expires and os.date("%c", e.expires)
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or "the end of time")
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return ("Banned: Expires: %s, Reason: %s"):format(
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date, e.reason)
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end
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end)
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minetest.register_on_joinplayer(function(player)
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local name = player:get_player_name()
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local e = xban.find_entry(name)
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local ip = minetest.get_player_ip(name)
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if not e then
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if ip then
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e = xban.find_entry(ip, true)
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else
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return
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end
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end
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e.names[name] = true
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if ip then
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e.names[ip] = true
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end
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e.last_seen = os.time()
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end)
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minetest.register_chatcommand("xban", {
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description = "XBan a player",
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params = "<player> <reason>",
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privs = { ban=true },
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func = function(name, params)
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local plname, reason = params:match("(%S+)%s+(.+)")
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if not (plname and reason) then
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return false, "Usage: /xban <player> <reason>"
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end
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local ok, e = xban.ban_player(plname, name, nil, reason)
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return ok, ok and ("Banned %s."):format(plname) or e
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end,
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})
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minetest.register_chatcommand("xtempban", {
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description = "XBan a player temporarily",
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params = "<player> <time> <reason>",
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privs = { ban=true },
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func = function(name, params)
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local plname, time, reason = params:match("(%S+)%s+(%S+)%s+(.+)")
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if not (plname and time and reason) then
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return false, "Usage: /xtempban <player> <time> <reason>"
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end
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time = parse_time(time)
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if time < 60 then
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return false, "You must ban for at least 60 seconds."
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end
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local expires = os.time() + time
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local ok, e = xban.ban_player(plname, name, expires, reason)
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return ok, (ok and ("Banned %s until %s."):format(
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plname, os.date("%c", expires)) or e)
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end,
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})
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minetest.register_chatcommand("xunban", {
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description = "XUnBan a player",
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params = "<player_or_ip>",
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privs = { ban=true },
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func = function(name, params)
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local plname = params:match("%S+")
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if not plname then
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minetest.chat_send_player(name,
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"Usage: /xunban <player_or_ip>")
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return
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end
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local ok, e = xban.unban_player(plname, name)
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return ok, ok and ("Unbanned %s."):format(plname) or e
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end,
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})
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minetest.register_chatcommand("xban_record", {
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description = "Show the ban records of a player",
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params = "<player_or_ip>",
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privs = { ban=true },
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func = function(name, params)
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local plname = params:match("%S+")
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if not plname then
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return false, "Usage: /xban_record <player_or_ip>"
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end
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local record, last_pos = xban.get_record(plname)
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if not record then
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local err = last_pos
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minetest.chat_send_player(name, "[xban] "..err)
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return
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end
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for _, e in ipairs(record) do
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minetest.chat_send_player(name, "[xban] "..e)
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end
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if last_pos then
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minetest.chat_send_player(name, "[xban] "..last_pos)
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end
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return true, "Record listed."
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end,
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})
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minetest.register_chatcommand("xban_wl", {
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description = "Manages the whitelist",
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params = "(add|del|get) <name_or_ip>",
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privs = { ban=true },
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func = function(name, params)
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local cmd, plname = params:match("%s*(%S+)%s*(%S+)")
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if cmd == "add" then
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xban.add_whitelist(plname, name)
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ACTION("%s adds %s to whitelist", name, plname)
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return true, "Added to whitelist: "..plname
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elseif cmd == "del" then
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xban.remove_whitelist(plname)
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ACTION("%s removes %s to whitelist", name, plname)
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return true, "Removed from whitelist: "..plname
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elseif cmd == "get" then
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local e = xban.get_whitelist(plname)
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if e then
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return true, "Source: "..(e.source or "Unknown")
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else
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return true, "No whitelist for: "..plname
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end
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end
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end,
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})
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local function check_temp_bans()
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minetest.after(60, check_temp_bans)
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local to_rm = { }
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local now = os.time()
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for i, e in ipairs(tempbans) do
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if e.expires and (e.expires <= now) then
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table.insert(to_rm, i)
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e.banned = false
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e.expires = nil
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e.reason = nil
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e.time = nil
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end
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end
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for _, i in ipairs(to_rm) do
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table.remove(tempbans, i)
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end
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end
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local function save_db()
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minetest.after(SAVE_INTERVAL, save_db)
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local f, e = io.open(DB_FILENAME, "wt")
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db.timestamp = os.time()
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if f then
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local ok, err = f:write(assert(xban.serialize_db(db)))
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if not ok then
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WARNING("Unable to save database: %s", err)
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end
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else
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WARNING("Unable to save database: %s", e)
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end
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if f then f:close() end
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return
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end
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local function load_db()
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local f, e = io.open(DB_FILENAME, "rt")
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if not f then
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WARNING("Unable to load database: %s", e)
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return
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end
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local cont = f:read("*a")
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if not cont then
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WARNING("Unable to load database: %s", "Read failed")
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return
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end
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local t, e2 = xban.deserialize_db(cont)
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if not t then
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WARNING("Unable to load database: %s",
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"Deserialization failed: "..(e2 or "unknown error"))
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return
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end
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db = t
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tempbans = { }
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for _, entry in ipairs(db) do
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if entry.banned and entry.expires then
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table.insert(tempbans, entry)
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end
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end
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end
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minetest.register_chatcommand("xban_cleanup", {
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description = "Removes all non-banned entries from the xban db",
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privs = { server=true },
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func = function(name, params)
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local old_count = #db
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local i = 1
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while i <= #db do
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if not db[i].banned then
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-- not banned, remove from db
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table.remove(db, i)
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else
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-- banned, hold entry back
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i = i + 1
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end
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end
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-- save immediately
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save_db()
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return true, "Removed " .. (old_count - #db) .. " entries, new db entry-count: " .. #db
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end,
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})
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minetest.register_on_shutdown(save_db)
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minetest.after(SAVE_INTERVAL, save_db)
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load_db()
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xban.db = db
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minetest.after(1, check_temp_bans)
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dofile(xban.MP.."/dbimport.lua")
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dofile(xban.MP.."/gui.lua")
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