copy all standard Dreambuilder mods in from the old subgame

(exactly as last supplied there, updates to these mods will follow later)

10 files changed, 679 insertions, 0 deletions

diff --git a/xban2/bower.json b/xban2/bower.json
new file mode 100644
index 0000000..1e1576d
--- /dev/null
+++ b/xban2/bower.json
@@ -0,0 +1,15 @@
+{
+  "name": "xban2",
+  "description": "Ban system extension with support for temporary bans.",
+  "keywords": [
+    "ban",
+    "administration",
+    "system",
+    "server"
+  ],
+  "homepage": "http://github.com/kaeza/minetest-xban2.git",
+  "authors": [
+    "Diego Martínez <lkaezadl3@yahoo.com>"
+  ],
+  "license": "BSD 2-Clause"
+}
diff --git a/xban2/dbimport.lua b/xban2/dbimport.lua
new file mode 100644
index 0000000..ec9293d
--- /dev/null
+++ b/xban2/dbimport.lua
@@ -0,0 +1,38 @@
+
+xban.importers = { }
+
+dofile(xban.MP.."/importers/minetest.lua")
+dofile(xban.MP.."/importers/v1.lua")
+dofile(xban.MP.."/importers/v2.lua")
+
+minetest.register_chatcommand("xban_dbi", {
+	description = "Import old databases",
+	params = "<importer>",
+	privs = { server=true },
+	func = function(name, params)
+		if params == "--list" then
+			local names = { }
+			for name in pairs(xban.importers) do
+				table.insert(names, name)
+			end
+			minetest.chat_send_player(name,
+			  ("[xban] Known importers: %s"):format(
+			  table.concat(names, ", ")))
+			return
+		elseif not xban.importers[params] then
+			minetest.chat_send_player(name,
+			  ("[xban] Unknown importer `%s'"):format(params))
+			minetest.chat_send_player(name, "[xban] Try `--list'")
+			return
+		end
+		local f = xban.importers[params]
+		local ok, err = f()
+		if ok then
+			minetest.chat_send_player(name,
+			  "[xban] Import successfull")
+		else
+			minetest.chat_send_player(name,
+			  ("[xban] Import failed: %s"):format(err))
+		end
+	end,
+})
diff --git a/xban2/doc/API.md b/xban2/doc/API.md
new file mode 100644
index 0000000..bee7c42
--- /dev/null
+++ b/xban2/doc/API.md
@@ -0,0 +1,32 @@
+
+## Extended Ban Mod API
+
+### ban_player
+
+`xban.ban_player(player_or_ip, source, expires, reason)`
+
+Ban a player and all of his/her alternative names and IPs.
+
+#### Arguments:
+
+* `player_or_ip` - Player to search for and ban. See note 1 below.
+* `source` - Source of the ban. See note 2 below.
+* `expires` - Time at which the ban expires. If nil, ban is permanent.
+* `reason` - Reason for ban.
+
+### unban_player
+
+`xban.unban_player(player_or_ip, source)`
+
+Unban a player and all of his/her alternative names and IPs.
+
+#### Arguments:
+
+* `player_or_ip` - Player to search for and unban.
+* `source` - Source of the ban. See note 2 below.
+
+### Notes
+
+* 1: If player is currently online, all his accounts are kicked.
+* 2: Mods using the xban API are advised to use the `"modname:source"`
+format for `source` (for example: `"anticheat:main"`).
diff --git a/xban2/doc/dbformat.txt b/xban2/doc/dbformat.txt
new file mode 100644
index 0000000..71b25a5
--- /dev/null
+++ b/xban2/doc/dbformat.txt
@@ -0,0 +1,45 @@
+
+Database is a regular Lua script that returns a table.
+
+Table has a single named field `timestamp' containing the time_t the
+DB was last saved. It's not used in the mod and is only meant for
+external use (I don't find filesystem timestamps too reliable).
+
+Next is a simple array (number indices) of entries.
+
+Each entry contains following fields:
+
+[1] = {
+	-- Names/IPs associated with this entry
+	names = {
+		["foo"] = true,
+		["bar"] = true,
+		["123.45.67.89"] = true,
+	},
+	banned = true,      -- Whether this user is banned
+	                    -- Other fields do not apply if false
+	time = 12341234,    -- Time of last ban (*1)
+	expires = 43214321  -- Time at which ban expires (*2)
+	                    -- If nil, permanent ban
+	reason = "asdf",    -- Reason for ban
+	source = "qwerty",  -- Source of ban (*2)
+	record = {
+		[1] = {
+			source = "asdf",
+			reason = "qwerty",
+			time = 12341234,
+			expires = 43214321,
+		},
+		[1] = {
+			source = "asdf",
+			reason = "Unbanned",  -- When unbanned
+			time = 12341234,
+		},
+	},
+}
+
+Notes:
+(*1)  All times are expressed in whatever unit `os.time()' uses
+      (`time_t' on most (all?) systems).
+(*2)  Mods using the xban API are advised to use the "modname:source"
+      format for `source' (for example: "anticheat:main").
diff --git a/xban2/gui.lua b/xban2/gui.lua
new file mode 100644
index 0000000..544f3be
--- /dev/null
+++ b/xban2/gui.lua
@@ -0,0 +1,90 @@
+
+local FORMNAME = "xban2:main"
+
+local states = { }
+
+local table_insert, table_concat =
+      table.insert, table.concat
+
+local ESC = minetest.formspec_escape
+
+local function make_fs(name)
+	local state = states[name]
+	if not state then return end
+	local list, index, filter = state.list, state.index, state.filter
+	if index > #list then
+		index = #list
+	end
+	local fs = {
+		"size[10,8]",
+		"label[0.5,0.6;Filter]",
+		"field[1.5,0.5;6,2;filter;;"..ESC(filter).."]",
+		"button[7.5,0.5;2,1;search;Search]",
+	}
+	table_insert(fs,
+			("textlist[0.5,2;3,5.5;player;%s;%d;0]"):
+			format(table_concat(list, ","), index))
+	local record_name = list[index]
+	if record_name then
+		local record, err = xban.get_record(record_name)
+		if record then
+			local reclist = { }
+			for _, r in ipairs(record) do
+				table_insert(reclist, ESC(r))
+			end
+			table_insert(fs,
+					("textlist[4,2;5,5.5;entry;%s;0;0]"):
+					format(table_concat(reclist, ",")))
+		else
+			table_insert(fs,
+					"textlist[4,2;5,5.5;entry;"..ESC(err)..";0]")
+		end
+	end
+	return table_concat(fs)
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= FORMNAME then return end
+	local name = player:get_player_name()
+	local state = states[name]
+	if fields.player then
+		local t = minetest.explode_textlist_event(fields.player)
+		if (t.type == "CHG") or (t.type == "DCL") then
+			state.index = t.index
+			minetest.show_formspec(name, FORMNAME, make_fs(name))
+		end
+		return
+	end
+	if fields.search then
+		local filter = fields.filter or ""
+		state.filter = filter
+		local list = { }
+		state.list = list
+		for k in pairs(minetest.auth_table) do
+			if k:find(filter, 1, true) then
+				table_insert(list, k)
+			end
+		end
+		table.sort(list)
+		minetest.show_formspec(name, FORMNAME, make_fs(name))
+	end
+end)
+
+minetest.register_chatcommand("xban_gui", {
+	description = "Show XBan GUI",
+	params = "",
+	func = function(name, params)
+		local state = states[name]
+		if not state then
+			state = { index=1, filter="" }
+			states[name] = state
+			local list = { }
+			state.list = list
+			for k in pairs(minetest.auth_table) do
+				table_insert(list, k)
+			end
+			table.sort(list)
+		end
+		minetest.show_formspec(name, FORMNAME, make_fs(name))
+	end,
+})
diff --git a/xban2/importers/minetest.lua b/xban2/importers/minetest.lua
new file mode 100644
index 0000000..e19c3c6
--- /dev/null
+++ b/xban2/importers/minetest.lua
@@ -0,0 +1,29 @@
+
+function xban.importers.minetest()
+	local f, e = io.open(minetest.get_worldpath().."/ipban.txt")
+	if not f then
+		return false, "Unable to open `ipban.txt': "..e
+	end
+	for line in f:lines() do
+		local ip, name = line:match("([^|]+)%|(.+)")
+		if ip and name then
+			local entry
+			entry = xban.find_entry(ip, true)
+			entry.banned = true
+			entry.reason = "Banned in `ipban.txt'"
+			entry.names[name] = true
+			entry.names[ip] = true
+			entry.time = os.time()
+			entry.expires = nil
+			entry.source = "xban:importer_minetest"
+			table.insert(entry.record, {
+				source = entry.source,
+				reason = entry.reason,
+				time = entry.time,
+				expires = nil,
+			})
+		end
+	end
+	f:close()
+	return true
+end
diff --git a/xban2/importers/v1.lua b/xban2/importers/v1.lua
new file mode 100644
index 0000000..a3722c7
--- /dev/null
+++ b/xban2/importers/v1.lua
@@ -0,0 +1,33 @@
+
+function xban.importers.v1()
+	local f, e = io.open(minetest.get_worldpath().."/players.iplist")
+	if not f then
+		return false, "Unable to open `players.iplist': "..e
+	end
+	for line in f:lines() do
+		local list = line:split("|")
+		if #list >= 2 then
+			local banned = (list[1]:sub(1, 1) == "!")
+			local entry
+			entry = xban.find_entry(list[1], true)
+			entry.banned = banned
+			for _, name in ipairs(list) do
+				entry.names[name] = true
+			end
+			if banned then
+				entry.reason = "Banned in `players.iplist'"
+				entry.time = os.time()
+				entry.expires = nil
+				entry.source = "xban:importer_v1"
+				table.insert(entry.record, {
+					source = entry.source,
+					reason = entry.reason,
+					time = entry.time,
+					expires = nil,
+				})
+			end
+		end
+	end
+	f:close()
+	return true
+end
diff --git a/xban2/importers/v2.lua b/xban2/importers/v2.lua
new file mode 100644
index 0000000..fd29966
--- /dev/null
+++ b/xban2/importers/v2.lua
@@ -0,0 +1,35 @@
+
+function xban.importers.v2()
+	return pcall(function()
+		local f, e = io.open(minetest.get_worldpath().."/players.iplist.v2")
+		if not f then
+			error("Unable to open `players.iplist.v2': "..e)
+		end
+		local text = f:read("*a")
+		f:close()
+		local db = minetest.deserialize(text)
+		for _, e in ipairs(db) do
+			for name in pairs(e.names) do
+				local entry = xban.find_entry(name, true)
+				if entry.source ~= "xban:importer_v2" then
+					for nm in pairs(e.names) do
+						entry.names[nm] = true
+					end
+					if e.banned then
+						entry.banned = true
+						entry.reason = e.banned
+						entry.source = "xban:importer_v2"
+						entry.time = e.time
+						entry.expires = e.expires
+						table.insert(entry.record, {
+							source = entry.source,
+							reason = entry.reason,
+							time = entry.time,
+							expires = entry.expires,
+						})
+					end
+				end
+			end
+		end
+	end)
+end
diff --git a/xban2/init.lua b/xban2/init.lua
new file mode 100644
index 0000000..81818a8
--- /dev/null
+++ b/xban2/init.lua
@@ -0,0 +1,331 @@
+
+xban = { MP = minetest.get_modpath(minetest.get_current_modname()) }
+
+dofile(xban.MP.."/serialize.lua")
+
+local db = { }
+local tempbans = { }
+
+local DEF_SAVE_INTERVAL = 300 -- 5 minutes
+local DEF_DB_FILENAME = minetest.get_worldpath().."/xban.db"
+
+local DB_FILENAME = minetest.setting_get("xban.db_filename")
+local SAVE_INTERVAL = tonumber(
+  minetest.setting_get("xban.db_save_interval")) or DEF_SAVE_INTERVAL
+
+if (not DB_FILENAME) or (DB_FILENAME == "") then
+	DB_FILENAME = DEF_DB_FILENAME
+end
+
+local function make_logger(level)
+	return function(text, ...)
+		minetest.log(level, "[xban] "..text:format(...))
+	end
+end
+
+local ACTION = make_logger("action")
+local INFO = make_logger("info")
+local WARNING = make_logger("warning")
+local ERROR = make_logger("error")
+
+local unit_to_secs = {
+	s = 1, m = 60, h = 3600,
+	D = 86400, W = 604800, M = 2592000, Y = 31104000,
+	[""] = 1,
+}
+
+local function parse_time(t) --> secs
+	local secs = 0
+	for num, unit in t:gmatch("(%d+)([smhDWMY]?)") do
+		secs = secs + (tonumber(num) * (unit_to_secs[unit] or 1))
+	end
+	return secs
+end
+
+function xban.find_entry(player, create) --> entry, index
+	for index, e in ipairs(db) do
+		for name in pairs(e.names) do
+			if name == player then
+				return e, index
+			end
+		end
+	end
+	if create then
+		print(("Created new entry for `%s'"):format(player))
+		local e = {
+			names = { [player]=true },
+			banned = false,
+			record = { },
+		}
+		table.insert(db, e)
+		return e, #db
+	end
+	return nil
+end
+
+function xban.get_info(player) --> ip_name_list, banned, last_record
+	local e = xban.find_entry(player)
+	if not e then
+		return nil, "No such entry"
+	end
+	return e.names, e.banned, e.record[#e.record]
+end
+
+function xban.ban_player(player, source, expires, reason) --> bool, err
+	local e = xban.find_entry(player, true)
+	local rec = {
+		source = source,
+		time = os.time(),
+		expires = expires,
+		reason = reason,
+	}
+	table.insert(e.record, rec)
+	e.names[player] = true
+	local pl = minetest.get_player_by_name(player)
+	if pl then
+		local ip = minetest.get_player_ip(player)
+		if ip then
+			e.names[ip] = true
+		end
+		e.last_pos = pl:getpos()
+	end
+	e.reason = reason
+	e.time = rec.time
+	e.expires = expires
+	e.banned = true
+	local msg
+	local date = (expires and os.date("%c", expires)
+	  or "the end of time")
+	if expires then
+		table.insert(tempbans, e)
+		msg = ("Banned: Expires: %s, Reason: %s"):format(date, reason)
+	else
+		msg = ("Banned: Reason: %s"):format(reason)
+	end
+	for nm in pairs(e.names) do
+		minetest.kick_player(nm, msg)
+	end
+	ACTION("%s bans %s until %s for reason: %s", source, player,
+	  date, reason)
+	ACTION("Banned Names/IPs: %s", table.concat(e.names, ", "))
+	return true
+end
+
+function xban.unban_player(player, source) --> bool, err
+	local e = xban.find_entry(player)
+	if not e then
+		return nil, "No such entry"
+	end
+	local rec = {
+		source = source,
+		time = os.time(),
+		reason = "Unbanned",
+	}
+	table.insert(e.record, rec)
+	e.banned = false
+	e.reason = nil
+	e.expires = nil
+	e.time = nil
+	ACTION("%s unbans %s", source, player)
+	ACTION("Unbanned Names/IPs: %s", table.concat(e.names, ", "))
+	return true
+end
+
+function xban.get_record(player)
+	local e = xban.find_entry(player)
+	if not e then
+		return nil, ("No entry for `%s'"):format(player)
+	elseif (not e.record) or (#e.record == 0) then
+		return nil, ("`%s' has no ban records"):format(player)
+	end
+	local record = { }
+	for _, rec in ipairs(e.record) do
+		local msg = rec.reason or "No reason given."
+		if rec.expires then
+			msg = msg..(", Expires: %s"):format(os.date("%c", e.expires))
+		end
+		if rec.source then
+			msg = msg..", Source: "..rec.source
+		end
+		table.insert(record, ("[%s]: %s"):format(os.date("%c", e.time), msg))
+	end
+	local last_pos
+	if e.last_pos then
+		last_pos = ("User was last seen at %s"):format(
+		  minetest.pos_to_string(e.last_pos))
+	end
+	return record, last_pos
+end
+
+minetest.register_on_prejoinplayer(function(name, ip)
+	local e = xban.find_entry(name) or xban.find_entry(ip)
+	if not e then return end
+	if e.banned then
+		local date = (e.expires and os.date("%c", e.expires)
+		  or "the end of time")
+		return ("Banned: Expires: %s, Reason: %s"):format(
+		  date, e.reason)
+	end
+end)
+
+minetest.register_on_joinplayer(function(player)
+	local name = player:get_player_name()
+	local e = xban.find_entry(name)
+	local ip = minetest.get_player_ip(name)
+	if not e then
+		if ip then
+			e = xban.find_entry(ip, true)
+		else
+			return
+		end
+	end
+	e.names[name] = true
+	if ip then
+		e.names[ip] = true
+	end
+	e.last_seen = os.time()
+end)
+
+minetest.register_chatcommand("xban", {
+	description = "XBan a player",
+	params = "<player> <reason>",
+	privs = { ban=true },
+	func = function(name, params)
+		local plname, reason = params:match("(%S+)%s+(.+)")
+		if not (plname and reason) then
+			return false, "Usage: /xban <player> <reason>"
+		end
+		xban.ban_player(plname, name, nil, reason)
+		return true, ("Banned %s."):format(plname)
+	end,
+})
+
+minetest.register_chatcommand("xtempban", {
+	description = "XBan a player temporarily",
+	params = "<player> <time> <reason>",
+	privs = { ban=true },
+	func = function(name, params)
+		local plname, time, reason = params:match("(%S+)%s+(%S+)%s+(.+)")
+		if not (plname and time and reason) then
+			return false, "Usage: /xtempban <player> <time> <reason>"
+		end
+		time = parse_time(time)
+		if time < 60 then
+			return false, "You must ban for at least 60 seconds."
+		end
+		local expires = os.time() + time
+		xban.ban_player(plname, name, expires, reason)
+		return true, ("Banned %s until %s."):format(plname, os.date("%c", expires))
+	end,
+})
+
+minetest.register_chatcommand("xunban", {
+	description = "XUnBan a player",
+	params = "<player_or_ip>",
+	privs = { ban=true },
+	func = function(name, params)
+		local plname = params:match("%S+")
+		if not plname then
+			minetest.chat_send_player(name,
+			  "Usage: /xunban <player_or_ip>")
+			return
+		end
+		local ok, e = xban.unban_player(plname, name)
+		return ok, ok and ("Unbanned %s."):format(plname) or e
+	end,
+})
+
+minetest.register_chatcommand("xban_record", {
+	description = "Show the ban records of a player",
+	params = "<player_or_ip>",
+	privs = { ban=true },
+	func = function(name, params)
+		local plname = params:match("%S+")
+		if not plname then
+			return false, "Usage: /xban_record <player_or_ip>"
+		end
+		local record, last_pos = xban.get_record(plname)
+		if not record then
+			local err = last_pos
+			minetest.chat_send_player(name, "[xban] "..err)
+			return
+		end
+		for _, e in ipairs(record) do
+			minetest.chat_send_player(name, "[xban] "..e)
+		end
+		if last_pos then
+			minetest.chat_send_player(name, "[xban] "..last_pos)
+		end
+		return true, "Record listed."
+	end,
+})
+
+local function check_temp_bans()
+	minetest.after(60, check_temp_bans)
+	local to_rm = { }
+	local now = os.time()
+	for i, e in ipairs(tempbans) do
+		if e.expires and (e.expires <= now) then
+			table.insert(to_rm, i)
+			e.banned = false
+			e.expires = nil
+			e.reason = nil
+			e.time = nil
+		end
+	end
+	for _, i in ipairs(to_rm) do
+		table.remove(tempbans, i)
+	end
+end
+
+local function save_db()
+	minetest.after(SAVE_INTERVAL, save_db)
+	local f, e = io.open(DB_FILENAME, "wt")
+	db.timestamp = os.time()
+	if f then
+		local ok, err = f:write(xban.serialize(db))
+		if not ok then
+			WARNING("Unable to save database: %s", err)
+		end
+	else
+		WARNING("Unable to save database: %s", e)
+	end
+	if f then f:close() end
+	return
+end
+
+local function load_db()
+	local f, e = io.open(DB_FILENAME, "rt")
+	if not f then
+		WARNING("Unable to load database: %s", e)
+		return
+	end
+	local cont = f:read("*a")
+	if not cont then
+		WARNING("Unable to load database: %s", "Read failed")
+		return
+	end
+	local t = minetest.deserialize(cont)
+	if not t then
+		WARNING("Unable to load database: %s",
+		  "Deserialization failed")
+		return
+	end
+	db = t
+	tempbans = { }
+	for _, entry in ipairs(db) do
+		if entry.banned and entry.expires then
+			table.insert(tempbans, entry)
+		end
+	end
+end
+
+minetest.register_on_shutdown(save_db)
+minetest.after(SAVE_INTERVAL, save_db)
+load_db()
+xban.db = db
+
+minetest.after(1, check_temp_bans)
+
+dofile(xban.MP.."/dbimport.lua")
+dofile(xban.MP.."/gui.lua")
diff --git a/xban2/serialize.lua b/xban2/serialize.lua
new file mode 100644
index 0000000..c159141
--- /dev/null
+++ b/xban2/serialize.lua
@@ -0,0 +1,31 @@
+
+local function repr(x)
+	if type(x) == "string" then
+		return ("%q"):format(x)
+	else
+		return tostring(x)
+	end
+end
+
+local function my_serialize_2(t, level)
+	level = level or 0
+	local lines = { }
+	local indent = ("\t"):rep(level)
+	for k, v in pairs(t) do
+		local typ = type(v)
+		if typ == "table" then
+			table.insert(lines,
+			  indent..("[%s] = {\n"):format(repr(k))
+			  ..my_serialize_2(v, level + 1).."\n"
+			  ..indent.."},")
+		else
+			table.insert(lines,
+			  indent..("[%s] = %s,"):format(repr(k), repr(v)))
+		end
+	end
+	return table.concat(lines, "\n")
+end
+
+function xban.serialize(t)
+	return "return {\n"..my_serialize_2(t, 1).."\n}"
+end