minetest/builtin/builtin.lua
2012-03-31 13:08:17 +03:00

1312 lines
37 KiB
Lua

--
-- This file contains built-in stuff in Minetest implemented in Lua.
--
-- It is always loaded and executed after registration of the C API,
-- before loading and running any mods.
--
--
-- Override some Lua library functions
--
print = minetest.debug
--
-- Define some random basic things
--
function basic_dump2(o)
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
function dump2(o, name, dumped)
name = name or "_"
dumped = dumped or {}
io.write(name, " = ")
if type(o) == "number" or type(o) == "string" or type(o) == "boolean"
or type(o) == "function" or type(o) == "nil"
or type(o) == "userdata" then
io.write(basic_dump2(o), "\n")
elseif type(o) == "table" then
if dumped[o] then
io.write(dumped[o], "\n")
else
dumped[o] = name
io.write("{}\n") -- new table
for k,v in pairs(o) do
local fieldname = string.format("%s[%s]", name, basic_dump2(k))
dump2(v, fieldname, dumped)
end
end
else
error("cannot dump a " .. type(o))
return nil
end
end
function dump(o, dumped)
dumped = dumped or {}
if type(o) == "number" then
return tostring(o)
elseif type(o) == "string" then
return string.format("%q", o)
elseif type(o) == "table" then
if dumped[o] then
return "<circular reference>"
end
dumped[o] = true
local t = {}
for k,v in pairs(o) do
t[#t+1] = "" .. k .. " = " .. dump(v, dumped)
end
return "{" .. table.concat(t, ", ") .. "}"
elseif type(o) == "boolean" then
return tostring(o)
elseif type(o) == "function" then
return "<function>"
elseif type(o) == "userdata" then
return "<userdata>"
elseif type(o) == "nil" then
return "nil"
else
error("cannot dump a " .. type(o))
return nil
end
end
function string:split(sep)
local sep, fields = sep or ",", {}
local pattern = string.format("([^%s]+)", sep)
self:gsub(pattern, function(c) fields[#fields+1] = c end)
return fields
end
function string:trim()
return (self:gsub("^%s*(.-)%s*$", "%1"))
end
assert(string.trim("\n \t\tfoo bar\t ") == "foo bar")
function minetest.pos_to_string(pos)
return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
end
--
-- Item definition helpers
--
function minetest.inventorycube(img1, img2, img3)
img2 = img2 or img1
img3 = img3 or img1
return "[inventorycube"
.. "{" .. img1:gsub("%^", "&")
.. "{" .. img2:gsub("%^", "&")
.. "{" .. img3:gsub("%^", "&")
end
function minetest.get_pointed_thing_position(pointed_thing, above)
if pointed_thing.type == "node" then
if above then
-- The position where a node would be placed
return pointed_thing.above
else
-- The position where a node would be dug
return pointed_thing.under
end
elseif pointed_thing.type == "object" then
obj = pointed_thing.ref
if obj ~= nil then
return obj:getpos()
else
return nil
end
else
return nil
end
end
function minetest.dir_to_facedir(dir)
if math.abs(dir.x) > math.abs(dir.z) then
if dir.x < 0 then
return 3
else
return 1
end
else
if dir.z < 0 then
return 2
else
return 0
end
end
end
function minetest.dir_to_wallmounted(dir)
if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
if dir.y < 0 then
return 1
else
return 0
end
elseif math.abs(dir.x) > math.abs(dir.z) then
if dir.x < 0 then
return 3
else
return 2
end
else
if dir.z < 0 then
return 5
else
return 4
end
end
end
function minetest.get_node_drops(nodename, toolname)
local drop = ItemStack({name=nodename}):get_definition().drop
if drop == nil then
-- default drop
return {ItemStack({name=nodename})}
elseif type(drop) == "string" then
-- itemstring drop
return {ItemStack(drop)}
elseif drop.items == nil then
-- drop = {} to disable default drop
return {}
end
-- Extended drop table
local got_items = {}
local got_count = 0
local _, item, tool
for _, item in ipairs(drop.items) do
local good_rarity = true
local good_tool = true
if item.rarity ~= nil then
good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
end
if item.tools ~= nil then
good_tool = false
for _, tool in ipairs(item.tools) do
if tool:sub(1, 1) == '~' then
good_tool = toolname:find(tool:sub(2)) ~= nil
else
good_tool = toolname == tool
end
if good_tool then
break
end
end
end
if good_rarity and good_tool then
got_count = got_count + 1
for _, add_item in ipairs(item.items) do
got_items[#got_items+1] = add_item
end
if drop.max_items ~= nil and got_count == drop.max_items then
break
end
end
end
return got_items
end
function minetest.item_place_node(itemstack, placer, pointed_thing)
local item = itemstack:peek_item()
local def = itemstack:get_definition()
if def.type == "node" and pointed_thing.type == "node" then
local pos = pointed_thing.above
local oldnode = minetest.env:get_node(pos)
local olddef = ItemStack({name=oldnode.name}):get_definition()
if not olddef.buildable_to then
minetest.log("info", placer:get_player_name() .. " tried to place"
.. " node in invalid position " .. minetest.pos_to_string(pos)
.. ", replacing " .. oldnode.name)
return
end
minetest.log("action", placer:get_player_name() .. " places node "
.. def.name .. " at " .. minetest.pos_to_string(pos))
local newnode = {name = def.name, param1 = 0, param2 = 0}
-- Calculate direction for wall mounted stuff like torches and signs
if def.paramtype2 == 'wallmounted' then
local under = pointed_thing.under
local above = pointed_thing.above
local dir = {x = under.x - above.x, y = under.y - above.y, z = under.z - above.z}
newnode.param2 = minetest.dir_to_wallmounted(dir)
-- Calculate the direction for furnaces and chests and stuff
elseif def.paramtype2 == 'facedir' then
local playerpos = placer:getpos()
local dir = {x = pos.x - playerpos.x, y = pos.y - playerpos.y, z = pos.z - playerpos.z}
newnode.param2 = minetest.dir_to_facedir(dir)
minetest.log("action", "facedir: " .. newnode.param2)
end
-- Add node and update
minetest.env:add_node(pos, newnode)
-- Set metadata owner
if def.metadata_name ~= "" then
minetest.env:get_meta(pos):set_owner(placer:get_player_name())
end
-- Run script hook
local _, callback
for _, callback in ipairs(minetest.registered_on_placenodes) do
callback(pos, newnode, placer)
end
itemstack:take_item()
end
return itemstack
end
function minetest.item_place_object(itemstack, placer, pointed_thing)
local pos = minetest.get_pointed_thing_position(pointed_thing, true)
if pos ~= nil then
local item = itemstack:take_item()
minetest.env:add_item(pos, item)
end
return itemstack
end
function minetest.item_place(itemstack, placer, pointed_thing)
if itemstack:get_definition().type == "node" then
return minetest.item_place_node(itemstack, placer, pointed_thing)
else
return minetest.item_place_object(itemstack, placer, pointed_thing)
end
end
function minetest.item_drop(itemstack, dropper, pos)
minetest.env:add_item(pos, itemstack)
return ""
end
function minetest.item_eat(hp_change, replace_with_item)
return function(itemstack, user, pointed_thing) -- closure
if itemstack:take_item() ~= nil then
user:set_hp(user:get_hp() + hp_change)
itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
end
return itemstack
end
end
function minetest.node_punch(pos, node, puncher)
-- Run script hook
local _, callback
for _, callback in ipairs(minetest.registered_on_punchnodes) do
callback(pos, node, puncher)
end
end
function minetest.node_dig(pos, node, digger)
minetest.debug("node_dig")
local def = ItemStack({name=node.name}):get_definition()
if not def.diggable then
minetest.debug("not diggable")
minetest.log("info", digger:get_player_name() .. " tried to dig "
.. node.name .. " which is not diggable "
.. minetest.pos_to_string(pos))
return
end
local meta = minetest.env:get_meta(pos)
if meta ~= nil and not meta:get_allow_removal() then
minetest.debug("dig prevented by metadata")
minetest.log("info", digger:get_player_name() .. " tried to dig "
.. node.name .. ", but removal is disabled by metadata "
.. minetest.pos_to_string(pos))
return
end
minetest.log('action', digger:get_player_name() .. " digs "
.. node.name .. " at " .. minetest.pos_to_string(pos))
if not minetest.setting_getbool("creative_mode") then
local wielded = digger:get_wielded_item()
local drops = minetest.get_node_drops(node.name, wielded:get_name())
-- Wear out tool
tp = wielded:get_tool_capabilities()
dp = minetest.get_dig_params(def.groups, tp)
wielded:add_wear(dp.wear)
digger:set_wielded_item(wielded)
-- Add dropped items
local _, dropped_item
for _, dropped_item in ipairs(drops) do
digger:get_inventory():add_item("main", dropped_item)
end
end
-- Remove node and update
minetest.env:remove_node(pos)
-- Run script hook
local _, callback
for _, callback in ipairs(minetest.registered_on_dignodes) do
callback(pos, node, digger)
end
end
--
-- Item definition defaults
--
minetest.nodedef_default = {
-- Item properties
type="node",
-- name intentionally not defined here
description = "",
groups = {},
inventory_image = "",
wield_image = "",
wield_scale = {x=1,y=1,z=1},
stack_max = 99,
usable = false,
liquids_pointable = false,
tool_capabilities = nil,
-- Interaction callbacks
on_place = minetest.item_place,
on_drop = minetest.item_drop,
on_use = nil,
on_punch = minetest.node_punch,
on_dig = minetest.node_dig,
-- Node properties
drawtype = "normal",
visual_scale = 1.0,
tile_images = {""},
special_materials = {
{image="", backface_culling=true},
{image="", backface_culling=true},
},
alpha = 255,
post_effect_color = {a=0, r=0, g=0, b=0},
paramtype = "none",
paramtype2 = "none",
is_ground_content = false,
sunlight_propagates = false,
walkable = true,
pointable = true,
diggable = true,
climbable = false,
buildable_to = false,
metadata_name = "",
liquidtype = "none",
liquid_alternative_flowing = "",
liquid_alternative_source = "",
liquid_viscosity = 0,
light_source = 0,
damage_per_second = 0,
selection_box = {type="regular"},
legacy_facedir_simple = false,
legacy_wallmounted = false,
}
minetest.craftitemdef_default = {
type="craft",
-- name intentionally not defined here
description = "",
groups = {},
inventory_image = "",
wield_image = "",
wield_scale = {x=1,y=1,z=1},
stack_max = 99,
liquids_pointable = false,
tool_capabilities = nil,
-- Interaction callbacks
on_place = minetest.item_place,
on_drop = minetest.item_drop,
on_use = nil,
}
minetest.tooldef_default = {
type="tool",
-- name intentionally not defined here
description = "",
groups = {},
inventory_image = "",
wield_image = "",
wield_scale = {x=1,y=1,z=1},
stack_max = 1,
liquids_pointable = false,
tool_capabilities = nil,
-- Interaction callbacks
on_place = minetest.item_place,
on_drop = minetest.item_drop,
on_use = nil,
}
minetest.noneitemdef_default = { -- This is used for the hand and unknown items
type="none",
-- name intentionally not defined here
description = "",
groups = {},
inventory_image = "",
wield_image = "",
wield_scale = {x=1,y=1,z=1},
stack_max = 99,
liquids_pointable = false,
tool_capabilities = nil,
-- Interaction callbacks
on_place = nil,
on_drop = nil,
on_use = nil,
}
--
-- Make raw registration functions inaccessible to anyone except builtin.lua
--
local register_item_raw = minetest.register_item_raw
minetest.register_item_raw = nil
local register_alias_raw = minetest.register_alias_raw
minetest.register_item_raw = nil
--
-- Item / entity / ABM registration functions
--
minetest.registered_abms = {}
minetest.registered_entities = {}
minetest.registered_items = {}
minetest.registered_nodes = {}
minetest.registered_craftitems = {}
minetest.registered_tools = {}
minetest.registered_aliases = {}
-- For tables that are indexed by item name:
-- If table[X] does not exist, default to table[minetest.registered_aliases[X]]
local function set_alias_metatable(table)
setmetatable(table, {
__index = function(name)
return rawget(table, minetest.registered_aliases[name])
end
})
end
set_alias_metatable(minetest.registered_items)
set_alias_metatable(minetest.registered_nodes)
set_alias_metatable(minetest.registered_craftitems)
set_alias_metatable(minetest.registered_tools)
-- These item names may not be used because they would interfere
-- with legacy itemstrings
local forbidden_item_names = {
MaterialItem = true,
MaterialItem2 = true,
MaterialItem3 = true,
NodeItem = true,
node = true,
CraftItem = true,
craft = true,
MBOItem = true,
ToolItem = true,
tool = true,
}
local function check_modname_prefix(name)
if name:sub(1,1) == ":" then
-- Escape the modname prefix enforcement mechanism
return name:sub(2)
else
-- Modname prefix enforcement
local expected_prefix = minetest.get_current_modname() .. ":"
if name:sub(1, #expected_prefix) ~= expected_prefix then
error("Name " .. name .. " does not follow naming conventions: " ..
"\"modname:\" or \":\" prefix required")
end
local subname = name:sub(#expected_prefix+1)
if subname:find("[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]") then
error("Name " .. name .. " does not follow naming conventions: " ..
"contains unallowed characters")
end
return name
end
end
function minetest.register_abm(spec)
-- Add to minetest.registered_abms
minetest.registered_abms[#minetest.registered_abms+1] = spec
end
function minetest.register_entity(name, prototype)
-- Check name
if name == nil then
error("Unable to register entity: Name is nil")
end
name = check_modname_prefix(tostring(name))
prototype.name = name
prototype.__index = prototype -- so that it can be used as a metatable
-- Add to minetest.registered_entities
minetest.registered_entities[name] = prototype
end
function minetest.register_item(name, itemdef)
-- Check name
if name == nil then
error("Unable to register item: Name is nil")
end
name = check_modname_prefix(tostring(name))
if forbidden_item_names[name] then
error("Unable to register item: Name is forbidden: " .. name)
end
itemdef.name = name
-- Apply defaults and add to registered_* table
if itemdef.type == "node" then
setmetatable(itemdef, {__index = minetest.nodedef_default})
minetest.registered_nodes[itemdef.name] = itemdef
elseif itemdef.type == "craft" then
setmetatable(itemdef, {__index = minetest.craftitemdef_default})
minetest.registered_craftitems[itemdef.name] = itemdef
elseif itemdef.type == "tool" then
setmetatable(itemdef, {__index = minetest.tooldef_default})
minetest.registered_tools[itemdef.name] = itemdef
elseif itemdef.type == "none" then
setmetatable(itemdef, {__index = minetest.noneitemdef_default})
else
error("Unable to register item: Type is invalid: " .. dump(itemdef))
end
-- Flowing liquid uses param2
if itemdef.type == "node" and itemdef.liquidtype == "flowing" then
itemdef.paramtype2 = "flowingliquid"
end
-- BEGIN Legacy stuff
if itemdef.cookresult_itemstring ~= nil and itemdef.cookresult_itemstring ~= "" then
minetest.register_craft({
type="cooking",
output=itemdef.cookresult_itemstring,
recipe=itemdef.name,
cooktime=itemdef.furnace_cooktime
})
end
if itemdef.furnace_burntime ~= nil and itemdef.furnace_burntime >= 0 then
minetest.register_craft({
type="fuel",
recipe=itemdef.name,
burntime=itemdef.furnace_burntime
})
end
-- END Legacy stuff
-- Disable all further modifications
getmetatable(itemdef).__newindex = {}
--minetest.log("Registering item: " .. itemdef.name)
minetest.registered_items[itemdef.name] = itemdef
minetest.registered_aliases[itemdef.name] = nil
register_item_raw(itemdef)
end
function minetest.register_node(name, nodedef)
nodedef.type = "node"
minetest.register_item(name, nodedef)
end
function minetest.register_craftitem(name, craftitemdef)
craftitemdef.type = "craft"
-- BEGIN Legacy stuff
if craftitemdef.inventory_image == nil and craftitemdef.image ~= nil then
craftitemdef.inventory_image = craftitemdef.image
end
-- END Legacy stuff
minetest.register_item(name, craftitemdef)
end
function minetest.register_tool(name, tooldef)
tooldef.type = "tool"
tooldef.stack_max = 1
-- BEGIN Legacy stuff
if tooldef.inventory_image == nil and tooldef.image ~= nil then
tooldef.inventory_image = tooldef.image
end
if tooldef.tool_capabilities == nil and
(tooldef.full_punch_interval ~= nil or
tooldef.basetime ~= nil or
tooldef.dt_weight ~= nil or
tooldef.dt_crackiness ~= nil or
tooldef.dt_crumbliness ~= nil or
tooldef.dt_cuttability ~= nil or
tooldef.basedurability ~= nil or
tooldef.dd_weight ~= nil or
tooldef.dd_crackiness ~= nil or
tooldef.dd_crumbliness ~= nil or
tooldef.dd_cuttability ~= nil) then
tooldef.tool_capabilities = {
full_punch_interval = tooldef.full_punch_interval,
basetime = tooldef.basetime,
dt_weight = tooldef.dt_weight,
dt_crackiness = tooldef.dt_crackiness,
dt_crumbliness = tooldef.dt_crumbliness,
dt_cuttability = tooldef.dt_cuttability,
basedurability = tooldef.basedurability,
dd_weight = tooldef.dd_weight,
dd_crackiness = tooldef.dd_crackiness,
dd_crumbliness = tooldef.dd_crumbliness,
dd_cuttability = tooldef.dd_cuttability,
}
end
-- END Legacy stuff
minetest.register_item(name, tooldef)
end
function minetest.register_alias(name, convert_to)
if forbidden_item_names[name] then
error("Unable to register alias: Name is forbidden: " .. name)
end
if minetest.registered_items[name] ~= nil then
minetest.log("WARNING: Not registering alias, item with same name" ..
" is already defined: " .. name .. " -> " .. convert_to)
else
--minetest.log("Registering alias: " .. name .. " -> " .. convert_to)
minetest.registered_aliases[name] = convert_to
register_alias_raw(name, convert_to)
end
end
-- Alias the forbidden item names to "" so they can't be
-- created via itemstrings (e.g. /give)
local name
for name in pairs(forbidden_item_names) do
minetest.registered_aliases[name] = ""
register_alias_raw(name, "")
end
-- Deprecated:
-- Aliases for minetest.register_alias (how ironic...)
--minetest.alias_node = minetest.register_alias
--minetest.alias_tool = minetest.register_alias
--minetest.alias_craftitem = minetest.register_alias
--
-- Built-in node definitions. Also defined in C.
--
minetest.register_item(":unknown", {
type = "none",
description = "Unknown Item",
inventory_image = "unknown_item.png",
on_place = minetest.item_place,
on_drop = minetest.item_drop,
})
minetest.register_node(":air", {
description = "Air (you hacker you!)",
inventory_image = "unknown_block.png",
wield_image = "unknown_block.png",
drawtype = "airlike",
paramtype = "light",
sunlight_propagates = true,
walkable = false,
pointable = false,
diggable = false,
buildable_to = true,
air_equivalent = true,
})
minetest.register_node(":ignore", {
description = "Ignore (you hacker you!)",
inventory_image = "unknown_block.png",
wield_image = "unknown_block.png",
drawtype = "airlike",
paramtype = "none",
sunlight_propagates = false,
walkable = false,
pointable = false,
diggable = false,
buildable_to = true, -- A way to remove accidentally placed ignores
air_equivalent = true,
})
-- The hand (bare definition)
minetest.register_item(":", {
type = "none",
})
--
-- Default material types
--
function digprop_err()
minetest.log("info", debug.traceback())
minetest.log("info", "WARNING: The minetest.digprop_* functions are obsolete and need to be replaced by item groups.")
end
minetest.digprop_constanttime = digprop_err
minetest.digprop_stonelike = digprop_err
minetest.digprop_dirtlike = digprop_err
minetest.digprop_gravellike = digprop_err
minetest.digprop_woodlike = digprop_err
minetest.digprop_leaveslike = digprop_err
minetest.digprop_glasslike = digprop_err
--
-- Creative inventory
--
minetest.creative_inventory = {}
minetest.add_to_creative_inventory = function(itemstring)
table.insert(minetest.creative_inventory, itemstring)
end
--
-- Callback registration
--
local function make_registration()
local t = {}
local registerfunc = function(func) table.insert(t, func) end
return t, registerfunc
end
minetest.registered_on_chat_messages, minetest.register_on_chat_message = make_registration()
minetest.registered_globalsteps, minetest.register_globalstep = make_registration()
minetest.registered_on_placenodes, minetest.register_on_placenode = make_registration()
minetest.registered_on_dignodes, minetest.register_on_dignode = make_registration()
minetest.registered_on_punchnodes, minetest.register_on_punchnode = make_registration()
minetest.registered_on_generateds, minetest.register_on_generated = make_registration()
minetest.registered_on_newplayers, minetest.register_on_newplayer = make_registration()
minetest.registered_on_dieplayers, minetest.register_on_dieplayer = make_registration()
minetest.registered_on_respawnplayers, minetest.register_on_respawnplayer = make_registration()
minetest.registered_on_joinplayers, minetest.register_on_joinplayer = make_registration()
minetest.registered_on_leaveplayers, minetest.register_on_leaveplayer = make_registration()
--
-- Misc. API functions
--
minetest.timers_to_add = {}
minetest.timers = {}
minetest.register_globalstep(function(dtime)
for _, timer in ipairs(minetest.timers_to_add) do
table.insert(minetest.timers, timer)
end
minetest.timers_to_add = {}
for index, timer in ipairs(minetest.timers) do
timer.time = timer.time - dtime
if timer.time <= 0 then
timer.func(timer.param)
table.remove(minetest.timers,index)
end
end
end)
function minetest.after(time, func, param)
table.insert(minetest.timers_to_add, {time=time, func=func, param=param})
end
function minetest.check_player_privs(name, privs)
local player_privs = minetest.get_player_privs(name)
local missing_privileges = {}
for priv, val in pairs(privs) do
if val then
if not player_privs[priv] then
table.insert(missing_privileges, priv)
end
end
end
if #missing_privileges > 0 then
return false, missing_privileges
end
return true, ""
end
function minetest.get_connected_players()
-- This could be optimized a bit, but leave that for later
local list = {}
for _, obj in pairs(minetest.env:get_objects_inside_radius({x=0,y=0,z=0}, 1000000)) do
if obj:get_player_name() then
table.insert(list, obj)
end
end
return list
end
function minetest.hash_node_position(pos)
return (pos.z+32768)*65536*65536 + (pos.y+32768)*65536 + pos.x+32768
end
--
-- Privileges
--
minetest.registered_privileges = {}
function minetest.register_privilege(name, description)
minetest.registered_privileges[name] = description
end
minetest.register_privilege("interact", "Can interact with things and modify the world")
minetest.register_privilege("teleport", "Can use /teleport command")
minetest.register_privilege("bring", "Can teleport other players")
minetest.register_privilege("settime", "Can use /time")
minetest.register_privilege("privs", "Can modify privileges")
minetest.register_privilege("server", "Can do server maintenance stuff")
minetest.register_privilege("shout", "Can speak in chat")
minetest.register_privilege("ban", "Can ban and unban players")
minetest.register_privilege("give", "Can use /give and /giveme")
minetest.register_privilege("password", "Can use /setpassword and /clearpassword")
--
-- Chat commands
--
minetest.chatcommands = {}
function minetest.register_chatcommand(cmd, def)
def = def or {}
def.params = def.params or ""
def.description = def.description or ""
def.privs = def.privs or {}
minetest.chatcommands[cmd] = def
end
-- Register the help command
minetest.register_chatcommand("help", {
privs = {},
params = "(nothing)/all/privs/<cmd>",
description = "Get help for commands or list privileges",
func = function(name, param)
local format_help_line = function(cmd, def)
local msg = "/"..cmd
if def.params and def.params ~= "" then msg = msg .. " " .. def.params end
if def.description and def.description ~= "" then msg = msg .. ": " .. def.description end
return msg
end
if param == "" then
local msg = ""
cmds = {}
for cmd, def in pairs(minetest.chatcommands) do
if minetest.check_player_privs(name, def.privs) then
table.insert(cmds, cmd)
end
end
minetest.chat_send_player(name, "Available commands: "..table.concat(cmds, " "))
minetest.chat_send_player(name, "Use '/help <cmd>' to get more information, or '/help all' to list everything.")
elseif param == "all" then
minetest.chat_send_player(name, "Available commands:")
for cmd, def in pairs(minetest.chatcommands) do
if minetest.check_player_privs(name, def.privs) then
minetest.chat_send_player(name, format_help_line(cmd, def))
end
end
elseif param == "privs" then
minetest.chat_send_player(name, "Available privileges:")
for priv, desc in pairs(minetest.registered_privileges) do
minetest.chat_send_player(name, priv..": "..desc)
end
else
local cmd = param
def = minetest.chatcommands[cmd]
if not def then
minetest.chat_send_player(name, "Command not available: "..cmd)
else
minetest.chat_send_player(name, format_help_line(cmd, def))
end
end
end,
})
-- Register C++ commands without functions
minetest.register_chatcommand("me", {params = nil, description = "chat action (eg. /me orders a pizza)"})
minetest.register_chatcommand("status", {description = "print server status line"})
minetest.register_chatcommand("shutdown", {params = "", description = "shutdown server", privs = {server=true}})
minetest.register_chatcommand("setting", {params = "<name> = <value>", description = "set line in configuration file", privs = {server=true}})
minetest.register_chatcommand("clearobjects", {params = "", description = "clear all objects in world", privs = {server=true}})
minetest.register_chatcommand("time", {params = "<0...24000>", description = "set time of day", privs = {settime=true}})
minetest.register_chatcommand("ban", {params = "<name>", description = "ban IP of player", privs = {ban=true}})
minetest.register_chatcommand("unban", {params = "<name/ip>", description = "remove IP ban", privs = {ban=true}})
-- Register some other commands
minetest.register_chatcommand("privs", {
params = "<name>",
description = "print out privileges of player",
func = function(name, param)
if param == "" then
param = name
else
if not minetest.check_player_privs(name, {privs=true}) then
minetest.chat_send_player(name, "Privileges of "..param.." are hidden from you.")
end
end
privs = {}
for priv, _ in pairs(minetest.get_player_privs(param)) do
table.insert(privs, priv)
end
minetest.chat_send_player(name, "Privileges of "..param..": "..table.concat(privs, " "))
end,
})
minetest.register_chatcommand("grant", {
params = "<name> <privilege>",
description = "Give privilege to player",
privs = {privs=true},
func = function(name, param)
local grantname, grantprivstr = string.match(param, "([^ ]+) (.+)")
if not grantname or not grantprivstr then
minetest.chat_send_player(name, "Invalid parameters (see /help grant)")
return
end
local grantprivs = minetest.string_to_privs(grantprivstr)
local privs = minetest.get_player_privs(grantname)
for priv, _ in pairs(grantprivs) do
privs[priv] = true
end
minetest.set_player_privs(grantname, privs)
end,
})
minetest.register_chatcommand("revoke", {
params = "<name> <privilege>",
description = "Remove privilege from player",
privs = {privs=true},
func = function(name, param)
local revokename, revokeprivstr = string.match(param, "([^ ]+) (.+)")
if not revokename or not revokeprivstr then
minetest.chat_send_player(name, "Invalid parameters (see /help revoke)")
return
end
local revokeprivs = minetest.string_to_privs(revokeprivstr)
local privs = minetest.get_player_privs(revokename)
for priv, _ in pairs(revokeprivs) do
table.remove(privs, priv)
end
minetest.set_player_privs(revokename, privs)
end,
})
minetest.register_chatcommand("setpassword", {
params = "<name> <password>",
description = "set given password",
privs = {password=true},
func = function(name, param)
if param == "" then
minetest.chat_send_player(name, "Password field required")
return
end
minetest.set_player_password(name, param)
minetest.chat_send_player(name, "Password set")
end,
})
minetest.register_chatcommand("clearpassword", {
params = "<name>",
description = "set empty password",
privs = {password=true},
func = function(name, param)
minetest.set_player_password(name, '')
minetest.chat_send_player(name, "Password cleared")
end,
})
minetest.register_chatcommand("teleport", {
params = "<X>,<Y>,<Z> | <to_name> | <name> <X>,<Y>,<Z> | <name> <to_name>",
description = "teleport to given position",
privs = {teleport=true},
func = function(name, param)
-- Returns (pos, true) if found, otherwise (pos, false)
local function find_free_position_near(pos)
local tries = {
{x=1,y=0,z=0},
{x=-1,y=0,z=0},
{x=0,y=0,z=1},
{x=0,y=0,z=-1},
}
for _, d in ipairs(tries) do
local p = {x = pos.x+d.x, y = pos.y+d.y, z = pos.z+d.z}
local n = minetest.env:get_node(p)
if not minetest.registered_nodes[n.name].walkable then
return p, true
end
end
return pos, false
end
local teleportee = nil
local p = {}
p.x, p.y, p.z = string.match(param, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
teleportee = minetest.env:get_player_by_name(name)
if teleportee and p.x and p.y and p.z then
minetest.chat_send_player(name, "Teleporting to ("..p.x..", "..p.y..", "..p.z..")")
teleportee:setpos(p)
return
end
local teleportee = nil
local p = nil
local target_name = nil
target_name = string.match(param, "^([^ ]+)$")
teleportee = minetest.env:get_player_by_name(name)
if target_name then
local target = minetest.env:get_player_by_name(target_name)
if target then
p = target:getpos()
end
end
if teleportee and p then
p = find_free_position_near(p)
minetest.chat_send_player(name, "Teleporting to "..target_name.." at ("..p.x..", "..p.y..", "..p.z..")")
teleportee:setpos(p)
return
end
if minetest.check_player_privs(name, {bring=true}) then
local teleportee = nil
local p = {}
local teleportee_name = nil
teleportee_name, p.x, p.y, p.z = string.match(param, "^([^ ]+) +([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
if teleportee_name then
teleportee = minetest.env:get_player_by_name(teleportee_name)
end
if teleportee and p.x and p.y and p.z then
minetest.chat_send_player(name, "Teleporting "..teleportee_name.." to ("..p.x..", "..p.y..", "..p.z..")")
teleportee:setpos(p)
return
end
local teleportee = nil
local p = nil
local teleportee_name = nil
local target_name = nil
teleportee_name, target_name = string.match(param, "^([^ ]+) +([^ ]+)$")
if teleportee_name then
teleportee = minetest.env:get_player_by_name(teleportee_name)
end
if target_name then
local target = minetest.env:get_player_by_name(target_name)
if target then
p = target:getpos()
end
end
if teleportee and p then
p = find_free_position_near(p)
minetest.chat_send_player(name, "Teleporting "..teleportee_name.." to "..target_name.." at ("..p.x..", "..p.y..", "..p.z..")")
teleportee:setpos(p)
return
end
end
minetest.chat_send_player(name, "Invalid parameters (\""..param.."\") or player not found (see /help teleport)")
return
end,
})
--
-- Builtin chat handler
--
minetest.register_on_chat_message(function(name, message)
local cmd, param = string.match(message, "/([^ ]+) *(.*)")
if not param then
param = ""
end
local cmd_def = minetest.chatcommands[cmd]
if cmd_def then
if not cmd_def.func then
-- This is a C++ command
return false
else
local has_privs, missing_privs = minetest.check_player_privs(name, cmd_def.privs)
if has_privs then
cmd_def.func(name, param)
else
minetest.chat_send_player(name, "You don't have permission to run this command (missing privileges: "..table.concat(missing_privs, ", ")..")")
end
return true -- handled chat message
end
end
return false
end)
--
-- Authentication handler
--
function minetest.string_to_privs(str)
assert(type(str) == "string")
privs = {}
for _, priv in pairs(string.split(str, ',')) do
privs[priv:trim()] = true
end
return privs
end
function minetest.privs_to_string(privs)
assert(type(privs) == "table")
list = {}
for priv, bool in pairs(privs) do
if bool then
table.insert(list, priv)
end
end
return table.concat(list, ',')
end
assert(minetest.string_to_privs("a,b").b == true)
assert(minetest.privs_to_string({a=true,b=true}) == "a,b")
minetest.auth_file_path = minetest.get_worldpath().."/auth.txt"
minetest.auth_table = {}
local function read_auth_file()
local newtable = {}
local file, errmsg = io.open(minetest.auth_file_path, 'rb')
if not file then
minetest.log("info", minetest.auth_file_path.." could not be opened for reading ("..errmsg.."); assuming new world")
return
end
for line in file:lines() do
if line ~= "" then
local name, password, privilegestring = string.match(line, "([^:]*):([^:]*):([^:]*)")
if not name or not password or not privilegestring then
error("Invalid line in auth.txt: "..dump(line))
end
local privileges = minetest.string_to_privs(privilegestring)
newtable[name] = {password=password, privileges=privileges}
end
end
io.close(file)
minetest.auth_table = newtable
end
local function save_auth_file()
local newtable = {}
-- Check table for validness before attempting to save
for name, stuff in pairs(minetest.auth_table) do
assert(type(name) == "string")
assert(name ~= "")
assert(type(stuff) == "table")
assert(type(stuff.password) == "string")
assert(type(stuff.privileges) == "table")
end
local file, errmsg = io.open(minetest.auth_file_path, 'w+b')
if not file then
error(minetest.auth_file_path.." could not be opened for writing: "..errmsg)
end
for name, stuff in pairs(minetest.auth_table) do
local privstring = minetest.privs_to_string(stuff.privileges)
file:write(name..":"..stuff.password..":"..privstring..'\n')
end
io.close(file)
end
read_auth_file()
minetest.builtin_auth_handler = {
get_auth = function(name)
assert(type(name) == "string")
if not minetest.auth_table[name] then
minetest.builtin_auth_handler.create_auth(name, minetest.get_password_hash(name, minetest.setting_get("default_password")))
end
if minetest.is_singleplayer() then
return {
password = "",
privileges = minetest.registered_privileges
}
else
if minetest.auth_table[name] and name == minetest.setting_get("name") then
return {
password = minetest.auth_table[name].password,
privileges = minetest.registered_privileges
}
else
return minetest.auth_table[name]
end
end
end,
create_auth = function(name, password)
assert(type(name) == "string")
assert(type(password) == "string")
minetest.log('info', "Built-in authentication handler adding player '"..name.."'")
minetest.auth_table[name] = {
password = password,
privileges = minetest.string_to_privs(minetest.setting_get("default_privs")),
}
save_auth_file()
end,
set_password = function(name, password)
assert(type(name) == "string")
assert(type(password) == "string")
if not minetest.auth_table[name] then
minetest.builtin_auth_handler.create_auth(name, password)
else
minetest.log('info', "Built-in authentication handler setting password of player '"..name.."'")
minetest.auth_table[name].password = password
save_auth_file()
end
end,
set_privileges = function(name, privileges)
assert(type(name) == "string")
assert(type(privileges) == "table")
if not minetest.auth_table[name] then
minetest.builtin_auth_handler.create_auth(name, minetest.get_password_hash(name, minetest.setting_get("default_password")))
end
minetest.auth_table[name].privileges = privileges
save_auth_file()
end
}
function minetest.register_authentication_handler(handler)
if minetest.registered_auth_handler then
error("Add-on authentication handler already registered by "..minetest.registered_auth_handler_modname)
end
minetest.registered_auth_handler = handler
minetest.registered_auth_handler_modname = minetest.get_current_modname()
end
function minetest.get_auth_handler()
if minetest.registered_auth_handler then
return minetest.registered_auth_handler
end
return minetest.builtin_auth_handler
end
function minetest.set_player_password(name, password)
minetest.get_auth_handler().set_password(name, password)
end
function minetest.set_player_privs(name, privs)
minetest.get_auth_handler().set_privileges(name, privs)
end
--
-- Set random seed
--
math.randomseed(os.time())
-- END