minetest/builtin/game/chat.lua

1361 lines
40 KiB
Lua
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

-- Minetest: builtin/game/chat.lua
local S = core.get_translator("__builtin")
-- Helper function that implements search and replace without pattern matching
-- Returns the string and a boolean indicating whether or not the string was modified
local function safe_gsub(s, replace, with)
local i1, i2 = s:find(replace, 1, true)
if not i1 then
return s, false
end
return s:sub(1, i1 - 1) .. with .. s:sub(i2 + 1), true
end
--
-- Chat message formatter
--
-- Implemented in Lua to allow redefinition
function core.format_chat_message(name, message)
local error_str = "Invalid chat message format - missing %s"
local str = core.settings:get("chat_message_format")
local replaced
-- Name
str, replaced = safe_gsub(str, "@name", name)
if not replaced then
error(error_str:format("@name"), 2)
end
-- Timestamp
str = safe_gsub(str, "@timestamp", os.date("%H:%M:%S", os.time()))
-- Insert the message into the string only after finishing all other processing
str, replaced = safe_gsub(str, "@message", message)
if not replaced then
error(error_str:format("@message"), 2)
end
return str
end
--
-- Chat command handler
--
core.chatcommands = core.registered_chatcommands -- BACKWARDS COMPATIBILITY
local msg_time_threshold =
tonumber(core.settings:get("chatcommand_msg_time_threshold")) or 0.1
core.register_on_chat_message(function(name, message)
if message:sub(1,1) ~= "/" then
return
end
local cmd, param = string.match(message, "^/([^ ]+) *(.*)")
if not cmd then
core.chat_send_player(name, "-!- "..S("Empty command."))
return true
end
param = param or ""
-- Run core.registered_on_chatcommands callbacks.
if core.run_callbacks(core.registered_on_chatcommands, 5, name, cmd, param) then
return true
end
local cmd_def = core.registered_chatcommands[cmd]
if not cmd_def then
core.chat_send_player(name, "-!- "..S("Invalid command: @1", cmd))
return true
end
local has_privs, missing_privs = core.check_player_privs(name, cmd_def.privs)
if has_privs then
core.set_last_run_mod(cmd_def.mod_origin)
local t_before = core.get_us_time()
local success, result = cmd_def.func(name, param)
local delay = (core.get_us_time() - t_before) / 1000000
if success == false and result == nil then
core.chat_send_player(name, "-!- "..S("Invalid command usage."))
local help_def = core.registered_chatcommands["help"]
if help_def then
local _, helpmsg = help_def.func(name, cmd)
if helpmsg then
core.chat_send_player(name, helpmsg)
end
end
else
if delay > msg_time_threshold then
-- Show how much time it took to execute the command
if result then
result = result .. core.colorize("#f3d2ff", S(" (@1 s)",
string.format("%.5f", delay)))
else
result = core.colorize("#f3d2ff", S(
"Command execution took @1 s",
string.format("%.5f", delay)))
end
end
if result then
core.chat_send_player(name, result)
end
end
else
core.chat_send_player(name,
S("You don't have permission to run this command "
.. "(missing privileges: @1).",
table.concat(missing_privs, ", ")))
end
return true -- Handled chat message
end)
if core.settings:get_bool("profiler.load") then
-- Run after register_chatcommand and its register_on_chat_message
-- Before any chatcommands that should be profiled
profiler.init_chatcommand()
end
-- Parses a "range" string in the format of "here (number)" or
-- "(x1, y1, z1) (x2, y2, z2)", returning two position vectors
local function parse_range_str(player_name, str)
local p1, p2
local args = str:split(" ")
if args[1] == "here" then
p1, p2 = core.get_player_radius_area(player_name, tonumber(args[2]))
if p1 == nil then
return false, S("Unable to get position of player @1.", player_name)
end
else
local player = core.get_player_by_name(player_name)
local relpos
if player then
relpos = player:get_pos()
end
p1, p2 = core.string_to_area(str, relpos)
if p1 == nil or p2 == nil then
return false, S("Incorrect area format. "
.. "Expected: (x1,y1,z1) (x2,y2,z2)")
end
end
return p1, p2
end
--
-- Chat commands
--
core.register_chatcommand("me", {
params = S("<action>"),
description = S("Show chat action (e.g., '/me orders a pizza' "
.. "displays '<player name> orders a pizza')"),
privs = {shout=true},
func = function(name, param)
core.chat_send_all("* " .. name .. " " .. param)
return true
end,
})
core.register_chatcommand("admin", {
description = S("Show the name of the server owner"),
func = function(name)
local admin = core.settings:get("name")
if admin then
return true, S("The administrator of this server is @1.", admin)
else
return false, S("There's no administrator named "
.. "in the config file.")
end
end,
})
local function privileges_of(name, privs)
if not privs then
privs = core.get_player_privs(name)
end
local privstr = core.privs_to_string(privs, ", ")
if privstr == "" then
return S("@1 does not have any privileges.", name)
else
return S("Privileges of @1: @2", name, privstr)
end
end
core.register_chatcommand("privs", {
params = S("[<name>]"),
description = S("Show privileges of yourself or another player"),
func = function(caller, param)
param = param:trim()
local name = (param ~= "" and param or caller)
if not core.player_exists(name) then
return false, S("Player @1 does not exist.", name)
end
return true, privileges_of(name)
end,
})
core.register_chatcommand("haspriv", {
params = S("<privilege>"),
description = S("Return list of all online players with privilege"),
privs = {basic_privs = true},
func = function(caller, param)
param = param:trim()
if param == "" then
return false, S("Invalid parameters (see /help haspriv).")
end
if not core.registered_privileges[param] then
return false, S("Unknown privilege!")
end
local privs = core.string_to_privs(param)
local players_with_priv = {}
for _, player in pairs(core.get_connected_players()) do
local player_name = player:get_player_name()
if core.check_player_privs(player_name, privs) then
table.insert(players_with_priv, player_name)
end
end
if #players_with_priv == 0 then
return true, S("No online player has the \"@1\" privilege.",
param)
else
table.sort(players_with_priv)
return true, S("Players online with the \"@1\" privilege: @2",
param,
table.concat(players_with_priv, ", "))
end
end
})
local function handle_grant_command(caller, grantname, grantprivstr)
local caller_privs = core.get_player_privs(caller)
if not (caller_privs.privs or caller_privs.basic_privs) then
return false, S("Your privileges are insufficient.")
end
if not core.get_auth_handler().get_auth(grantname) then
return false, S("Player @1 does not exist.", grantname)
end
local grantprivs = core.string_to_privs(grantprivstr)
if grantprivstr == "all" then
grantprivs = core.registered_privileges
end
local privs = core.get_player_privs(grantname)
local privs_unknown = ""
local basic_privs =
core.string_to_privs(core.settings:get("basic_privs") or "interact,shout")
for priv, _ in pairs(grantprivs) do
if not basic_privs[priv] and not caller_privs.privs then
return false, S("Your privileges are insufficient. "..
"'@1' only allows you to grant: @2",
"basic_privs",
core.privs_to_string(basic_privs, ', '))
end
if not core.registered_privileges[priv] then
privs_unknown = privs_unknown .. S("Unknown privilege: @1", priv) .. "\n"
end
privs[priv] = true
end
if privs_unknown ~= "" then
return false, privs_unknown
end
core.set_player_privs(grantname, privs)
for priv, _ in pairs(grantprivs) do
-- call the on_grant callbacks
core.run_priv_callbacks(grantname, priv, caller, "grant")
end
core.log("action", caller..' granted ('..core.privs_to_string(grantprivs, ', ')..') privileges to '..grantname)
if grantname ~= caller then
core.chat_send_player(grantname,
S("@1 granted you privileges: @2", caller,
core.privs_to_string(grantprivs, ', ')))
end
return true, privileges_of(grantname)
end
core.register_chatcommand("grant", {
params = S("<name> (<privilege> [, <privilege2> [<...>]] | all)"),
description = S("Give privileges to player"),
func = function(name, param)
local grantname, grantprivstr = string.match(param, "([^ ]+) (.+)")
if not grantname or not grantprivstr then
return false, S("Invalid parameters (see /help grant).")
end
return handle_grant_command(name, grantname, grantprivstr)
end,
})
core.register_chatcommand("grantme", {
params = S("<privilege> [, <privilege2> [<...>]] | all"),
description = S("Grant privileges to yourself"),
func = function(name, param)
if param == "" then
return false, S("Invalid parameters (see /help grantme).")
end
return handle_grant_command(name, name, param)
end,
})
local function handle_revoke_command(caller, revokename, revokeprivstr)
local caller_privs = core.get_player_privs(caller)
if not (caller_privs.privs or caller_privs.basic_privs) then
return false, S("Your privileges are insufficient.")
end
if not core.get_auth_handler().get_auth(revokename) then
return false, S("Player @1 does not exist.", revokename)
end
local privs = core.get_player_privs(revokename)
local revokeprivs = core.string_to_privs(revokeprivstr)
local is_singleplayer = core.is_singleplayer()
local is_admin = not is_singleplayer
and revokename == core.settings:get("name")
and revokename ~= ""
if revokeprivstr == "all" then
revokeprivs = table.copy(privs)
end
local privs_unknown = ""
local basic_privs =
core.string_to_privs(core.settings:get("basic_privs") or "interact,shout")
local irrevokable = {}
local has_irrevokable_priv = false
for priv, _ in pairs(revokeprivs) do
if not basic_privs[priv] and not caller_privs.privs then
return false, S("Your privileges are insufficient. "..
"'@1' only allows you to revoke: @2",
"basic_privs",
core.privs_to_string(basic_privs, ', '))
end
local def = core.registered_privileges[priv]
if not def then
-- Old/removed privileges might still be granted to certain players
if not privs[priv] then
privs_unknown = privs_unknown .. S("Unknown privilege: @1", priv) .. "\n"
end
elseif is_singleplayer and def.give_to_singleplayer then
irrevokable[priv] = true
elseif is_admin and def.give_to_admin then
irrevokable[priv] = true
end
end
for priv, _ in pairs(irrevokable) do
revokeprivs[priv] = nil
has_irrevokable_priv = true
end
if privs_unknown ~= "" then
return false, privs_unknown
end
if has_irrevokable_priv then
if is_singleplayer then
core.chat_send_player(caller,
S("Note: Cannot revoke in singleplayer: @1",
core.privs_to_string(irrevokable, ', ')))
elseif is_admin then
core.chat_send_player(caller,
S("Note: Cannot revoke from admin: @1",
core.privs_to_string(irrevokable, ', ')))
end
end
local revokecount = 0
for priv, _ in pairs(revokeprivs) do
privs[priv] = nil
revokecount = revokecount + 1
end
if revokecount == 0 then
return false, S("No privileges were revoked.")
end
core.set_player_privs(revokename, privs)
for priv, _ in pairs(revokeprivs) do
-- call the on_revoke callbacks
core.run_priv_callbacks(revokename, priv, caller, "revoke")
end
local new_privs = core.get_player_privs(revokename)
core.log("action", caller..' revoked ('
..core.privs_to_string(revokeprivs, ', ')
..') privileges from '..revokename)
if revokename ~= caller then
core.chat_send_player(revokename,
S("@1 revoked privileges from you: @2", caller,
core.privs_to_string(revokeprivs, ', ')))
end
return true, privileges_of(revokename, new_privs)
end
core.register_chatcommand("revoke", {
params = S("<name> (<privilege> [, <privilege2> [<...>]] | all)"),
description = S("Remove privileges from player"),
privs = {},
func = function(name, param)
local revokename, revokeprivstr = string.match(param, "([^ ]+) (.+)")
if not revokename or not revokeprivstr then
return false, S("Invalid parameters (see /help revoke).")
end
return handle_revoke_command(name, revokename, revokeprivstr)
end,
})
core.register_chatcommand("revokeme", {
params = S("<privilege> [, <privilege2> [<...>]] | all"),
description = S("Revoke privileges from yourself"),
privs = {},
func = function(name, param)
if param == "" then
return false, S("Invalid parameters (see /help revokeme).")
end
return handle_revoke_command(name, name, param)
end,
})
core.register_chatcommand("setpassword", {
params = S("<name> <password>"),
description = S("Set player's password (sent unencrypted, thus insecure)"),
privs = {password=true},
func = function(name, param)
local toname, raw_password = string.match(param, "^([^ ]+) +(.+)$")
if not toname then
toname = param:match("^([^ ]+) *$")
raw_password = nil
end
if not toname then
return false, S("Name field required.")
end
local msg_chat, msg_log, msg_ret
if not raw_password then
core.set_player_password(toname, "")
msg_chat = S("Your password was cleared by @1.", name)
msg_log = name .. " clears password of " .. toname .. "."
msg_ret = S("Password of player \"@1\" cleared.", toname)
else
core.set_player_password(toname,
core.get_password_hash(toname,
raw_password))
msg_chat = S("Your password was set by @1.", name)
msg_log = name .. " sets password of " .. toname .. "."
msg_ret = S("Password of player \"@1\" set.", toname)
end
if toname ~= name then
core.chat_send_player(toname, msg_chat)
end
core.log("action", msg_log)
return true, msg_ret
end,
})
core.register_chatcommand("clearpassword", {
params = S("<name>"),
description = S("Set empty password for a player"),
privs = {password=true},
func = function(name, param)
local toname = param
if toname == "" then
return false, S("Name field required.")
end
core.set_player_password(toname, '')
core.log("action", name .. " clears password of " .. toname .. ".")
return true, S("Password of player \"@1\" cleared.", toname)
end,
})
core.register_chatcommand("auth_reload", {
params = "",
description = S("Reload authentication data"),
privs = {server=true},
func = function(name, param)
local done = core.auth_reload()
return done, (done and S("Done.") or S("Failed."))
end,
})
core.register_chatcommand("remove_player", {
params = S("<name>"),
description = S("Remove a player's data"),
privs = {server=true},
func = function(name, param)
local toname = param
if toname == "" then
return false, S("Name field required.")
end
local rc = core.remove_player(toname)
if rc == 0 then
core.log("action", name .. " removed player data of " .. toname .. ".")
return true, S("Player \"@1\" removed.", toname)
elseif rc == 1 then
return true, S("No such player \"@1\" to remove.", toname)
elseif rc == 2 then
return true, S("Player \"@1\" is connected, cannot remove.", toname)
end
return false, S("Unhandled remove_player return code @1.", tostring(rc))
end,
})
-- pos may be a non-integer position
local function find_free_position_near(pos)
local tries = {
vector.new( 1, 0, 0),
vector.new(-1, 0, 0),
vector.new( 0, 0, 1),
vector.new( 0, 0, -1),
}
for _, d in ipairs(tries) do
local p = vector.add(pos, d)
local n = core.get_node_or_nil(p)
if n then
local def = core.registered_nodes[n.name]
if def and not def.walkable then
return p
end
end
end
return pos
end
-- Teleports player <name> to <p> if possible
local function teleport_to_pos(name, p)
local lm = 31007 -- equals MAX_MAP_GENERATION_LIMIT in C++
if p.x < -lm or p.x > lm or p.y < -lm or p.y > lm
or p.z < -lm or p.z > lm then
return false, S("Cannot teleport out of map bounds!")
end
local teleportee = core.get_player_by_name(name)
if not teleportee then
return false, S("Cannot get player with name @1.", name)
end
if teleportee:get_attach() then
return false, S("Cannot teleport, @1 " ..
"is attached to an object!", name)
end
teleportee:set_pos(p)
return true, S("Teleporting @1 to @2.", name, core.pos_to_string(p, 1))
end
-- Teleports player <name> next to player <target_name> if possible
local function teleport_to_player(name, target_name)
if name == target_name then
return false, S("One does not teleport to oneself.")
end
local teleportee = core.get_player_by_name(name)
if not teleportee then
return false, S("Cannot get teleportee with name @1.", name)
end
if teleportee:get_attach() then
return false, S("Cannot teleport, @1 " ..
"is attached to an object!", name)
end
local target = core.get_player_by_name(target_name)
if not target then
return false, S("Cannot get target player with name @1.", target_name)
end
local p = find_free_position_near(target:get_pos())
teleportee:set_pos(p)
return true, S("Teleporting @1 to @2 at @3.", name, target_name,
core.pos_to_string(p, 1))
end
core.register_chatcommand("teleport", {
params = S("<X>,<Y>,<Z> | <to_name> | <name> <X>,<Y>,<Z> | <name> <to_name>"),
description = S("Teleport to position or player"),
privs = {teleport=true},
func = function(name, param)
local player = core.get_player_by_name(name)
local relpos
if player then
relpos = player:get_pos()
end
local p = {}
p.x, p.y, p.z = string.match(param, "^([%d.~-]+)[, ] *([%d.~-]+)[, ] *([%d.~-]+)$")
p = core.parse_coordinates(p.x, p.y, p.z, relpos)
if p and p.x and p.y and p.z then
return teleport_to_pos(name, p)
end
local target_name = param:match("^([^ ]+)$")
if target_name then
return teleport_to_player(name, target_name)
end
local has_bring_priv = core.check_player_privs(name, {bring=true})
local missing_bring_msg = S("You don't have permission to teleport " ..
"other players (missing privilege: @1).", "bring")
local teleportee_name
p = {}
teleportee_name, p.x, p.y, p.z = param:match(
"^([^ ]+) +([%d.~-]+)[, ] *([%d.~-]+)[, ] *([%d.~-]+)$")
if teleportee_name then
local teleportee = core.get_player_by_name(teleportee_name)
if not teleportee then
return
end
relpos = teleportee:get_pos()
p = core.parse_coordinates(p.x, p.y, p.z, relpos)
end
p = vector.apply(p, tonumber)
if teleportee_name and p.x and p.y and p.z then
if not has_bring_priv then
return false, missing_bring_msg
end
return teleport_to_pos(teleportee_name, p)
end
teleportee_name, target_name = string.match(param, "^([^ ]+) +([^ ]+)$")
if teleportee_name and target_name then
if not has_bring_priv then
return false, missing_bring_msg
end
return teleport_to_player(teleportee_name, target_name)
end
return false
end,
})
core.register_chatcommand("set", {
params = S("([-n] <name> <value>) | <name>"),
description = S("Set or read server configuration setting"),
privs = {server=true},
func = function(name, param)
local arg, setname, setvalue = string.match(param, "(-[n]) ([^ ]+) (.+)")
if arg and arg == "-n" and setname and setvalue then
core.settings:set(setname, setvalue)
return true, setname .. " = " .. setvalue
end
setname, setvalue = string.match(param, "([^ ]+) (.+)")
if setname and setvalue then
if setname:sub(1, 7) == "secure." then
return false, S("Failed. Cannot modify secure settings. "
.. "Edit the settings file manually.")
end
if not core.settings:get(setname) then
return false, S("Failed. Use '/set -n <name> <value>' "
.. "to create a new setting.")
end
core.settings:set(setname, setvalue)
return true, S("@1 = @2", setname, setvalue)
end
setname = string.match(param, "([^ ]+)")
if setname then
setvalue = core.settings:get(setname)
if not setvalue then
setvalue = S("<not set>")
end
return true, S("@1 = @2", setname, setvalue)
end
return false, S("Invalid parameters (see /help set).")
end,
})
local function emergeblocks_callback(pos, action, num_calls_remaining, ctx)
if ctx.total_blocks == 0 then
ctx.total_blocks = num_calls_remaining + 1
ctx.current_blocks = 0
end
ctx.current_blocks = ctx.current_blocks + 1
if ctx.current_blocks == ctx.total_blocks then
core.chat_send_player(ctx.requestor_name,
S("Finished emerging @1 blocks in @2ms.",
ctx.total_blocks,
string.format("%.2f", (os.clock() - ctx.start_time) * 1000)))
end
end
local function emergeblocks_progress_update(ctx)
if ctx.current_blocks ~= ctx.total_blocks then
core.chat_send_player(ctx.requestor_name,
S("emergeblocks update: @1/@2 blocks emerged (@3%)",
ctx.current_blocks, ctx.total_blocks,
string.format("%.1f", (ctx.current_blocks / ctx.total_blocks) * 100)))
core.after(2, emergeblocks_progress_update, ctx)
end
end
core.register_chatcommand("emergeblocks", {
params = S("(here [<radius>]) | (<pos1> <pos2>)"),
description = S("Load (or, if nonexistent, generate) map blocks contained in "
.. "area pos1 to pos2 (<pos1> and <pos2> must be in parentheses)"),
privs = {server=true},
func = function(name, param)
local p1, p2 = parse_range_str(name, param)
if p1 == false then
return false, p2
end
local context = {
current_blocks = 0,
total_blocks = 0,
start_time = os.clock(),
requestor_name = name
}
core.emerge_area(p1, p2, emergeblocks_callback, context)
core.after(2, emergeblocks_progress_update, context)
return true, S("Started emerge of area ranging from @1 to @2.",
core.pos_to_string(p1, 1), core.pos_to_string(p2, 1))
end,
})
core.register_chatcommand("deleteblocks", {
params = S("(here [<radius>]) | (<pos1> <pos2>)"),
description = S("Delete map blocks contained in area pos1 to pos2 "
.. "(<pos1> and <pos2> must be in parentheses)"),
privs = {server=true},
func = function(name, param)
local p1, p2 = parse_range_str(name, param)
if p1 == false then
return false, p2
end
if core.delete_area(p1, p2) then
return true, S("Successfully cleared area "
.. "ranging from @1 to @2.",
core.pos_to_string(p1, 1), core.pos_to_string(p2, 1))
else
return false, S("Failed to clear one or more "
.. "blocks in area.")
end
end,
})
core.register_chatcommand("fixlight", {
params = S("(here [<radius>]) | (<pos1> <pos2>)"),
description = S("Resets lighting in the area between pos1 and pos2 "
.. "(<pos1> and <pos2> must be in parentheses)"),
privs = {server = true},
func = function(name, param)
local p1, p2 = parse_range_str(name, param)
if p1 == false then
return false, p2
end
if core.fix_light(p1, p2) then
return true, S("Successfully reset light in the area "
.. "ranging from @1 to @2.",
core.pos_to_string(p1, 1), core.pos_to_string(p2, 1))
else
return false, S("Failed to load one or more blocks in area.")
end
end,
})
core.register_chatcommand("mods", {
params = "",
description = S("List mods installed on the server"),
privs = {},
func = function(name, param)
local mods = core.get_modnames()
if #mods == 0 then
return true, S("No mods installed.")
else
return true, table.concat(core.get_modnames(), ", ")
end
end,
})
local function handle_give_command(cmd, giver, receiver, stackstring)
core.log("action", giver .. " invoked " .. cmd
.. ', stackstring="' .. stackstring .. '"')
local itemstack = ItemStack(stackstring)
if itemstack:is_empty() then
return false, S("Cannot give an empty item.")
elseif (not itemstack:is_known()) or (itemstack:get_name() == "unknown") then
return false, S("Cannot give an unknown item.")
-- Forbid giving 'ignore' due to unwanted side effects
elseif itemstack:get_name() == "ignore" then
return false, S("Giving 'ignore' is not allowed.")
end
local receiverref = core.get_player_by_name(receiver)
if receiverref == nil then
return false, S("@1 is not a known player.", receiver)
end
local leftover = receiverref:get_inventory():add_item("main", itemstack)
local partiality
if leftover:is_empty() then
partiality = nil
elseif leftover:get_count() == itemstack:get_count() then
partiality = false
else
partiality = true
end
-- The actual item stack string may be different from what the "giver"
-- entered (e.g. big numbers are always interpreted as 2^16-1).
stackstring = itemstack:to_string()
local msg
if partiality == true then
msg = S("@1 partially added to inventory.", stackstring)
elseif partiality == false then
msg = S("@1 could not be added to inventory.", stackstring)
else
msg = S("@1 added to inventory.", stackstring)
end
if giver == receiver then
return true, msg
else
core.chat_send_player(receiver, msg)
local msg_other
if partiality == true then
msg_other = S("@1 partially added to inventory of @2.",
stackstring, receiver)
elseif partiality == false then
msg_other = S("@1 could not be added to inventory of @2.",
stackstring, receiver)
else
msg_other = S("@1 added to inventory of @2.",
stackstring, receiver)
end
return true, msg_other
end
end
core.register_chatcommand("give", {
params = S("<name> <ItemString> [<count> [<wear>]]"),
description = S("Give item to player"),
privs = {give=true},
func = function(name, param)
local toname, itemstring = string.match(param, "^([^ ]+) +(.+)$")
if not toname or not itemstring then
return false, S("Name and ItemString required.")
end
return handle_give_command("/give", name, toname, itemstring)
end,
})
core.register_chatcommand("giveme", {
params = S("<ItemString> [<count> [<wear>]]"),
description = S("Give item to yourself"),
privs = {give=true},
func = function(name, param)
local itemstring = string.match(param, "(.+)$")
if not itemstring then
return false, S("ItemString required.")
end
return handle_give_command("/giveme", name, name, itemstring)
end,
})
core.register_chatcommand("spawnentity", {
params = S("<EntityName> [<X>,<Y>,<Z>]"),
description = S("Spawn entity at given (or your) position"),
privs = {give=true, interact=true},
func = function(name, param)
local entityname, pstr = string.match(param, "^([^ ]+) *(.*)$")
if not entityname then
return false, S("EntityName required.")
end
core.log("action", ("%s invokes /spawnentity, entityname=%q")
:format(name, entityname))
local player = core.get_player_by_name(name)
if player == nil then
core.log("error", "Unable to spawn entity, player is nil")
return false, S("Unable to spawn entity, player is nil.")
end
if not core.registered_entities[entityname] then
return false, S("Cannot spawn an unknown entity.")
end
local p
if pstr == "" then
p = player:get_pos()
else
p = {}
p.x, p.y, p.z = string.match(pstr, "^([%d.~-]+)[, ] *([%d.~-]+)[, ] *([%d.~-]+)$")
local relpos = player:get_pos()
p = core.parse_coordinates(p.x, p.y, p.z, relpos)
if not (p and p.x and p.y and p.z) then
return false, S("Invalid parameters (@1).", param)
end
end
p.y = p.y + 1
local obj = core.add_entity(p, entityname)
if obj then
return true, S("@1 spawned.", entityname)
else
return true, S("@1 failed to spawn.", entityname)
end
end,
})
core.register_chatcommand("pulverize", {
params = "",
description = S("Destroy item in hand"),
func = function(name, param)
local player = core.get_player_by_name(name)
if not player then
core.log("error", "Unable to pulverize, no player.")
return false, S("Unable to pulverize, no player.")
end
local wielded_item = player:get_wielded_item()
if wielded_item:is_empty() then
return false, S("Unable to pulverize, no item in hand.")
end
core.log("action", name .. " pulverized \"" ..
wielded_item:get_name() .. " " .. wielded_item:get_count() .. "\"")
player:set_wielded_item(nil)
return true, S("An item was pulverized.")
end,
})
-- Key = player name
core.rollback_punch_callbacks = {}
core.register_on_punchnode(function(pos, node, puncher)
local name = puncher and puncher:get_player_name()
if name and core.rollback_punch_callbacks[name] then
core.rollback_punch_callbacks[name](pos, node, puncher)
core.rollback_punch_callbacks[name] = nil
end
end)
core.register_chatcommand("rollback_check", {
params = S("[<range>] [<seconds>] [<limit>]"),
description = S("Check who last touched a node or a node near it "
.. "within the time specified by <seconds>. "
.. "Default: range = 0, seconds = 86400 = 24h, limit = 5. "
.. "Set <seconds> to inf for no time limit"),
privs = {rollback=true},
func = function(name, param)
if not core.settings:get_bool("enable_rollback_recording") then
return false, S("Rollback functions are disabled.")
end
local range, seconds, limit =
param:match("(%d+) *(%d*) *(%d*)")
range = tonumber(range) or 0
seconds = tonumber(seconds) or 86400
limit = tonumber(limit) or 5
if limit > 100 then
return false, S("That limit is too high!")
end
core.rollback_punch_callbacks[name] = function(pos, node, puncher)
local name = puncher:get_player_name()
core.chat_send_player(name, S("Checking @1 ...", core.pos_to_string(pos)))
local actions = core.rollback_get_node_actions(pos, range, seconds, limit)
if not actions then
core.chat_send_player(name, S("Rollback functions are disabled."))
return
end
local num_actions = #actions
if num_actions == 0 then
core.chat_send_player(name,
S("Nobody has touched the specified "
.. "location in @1 seconds.",
seconds))
return
end
local time = os.time()
for i = num_actions, 1, -1 do
local action = actions[i]
core.chat_send_player(name,
S("@1 @2 @3 -> @4 @5 seconds ago.",
core.pos_to_string(action.pos),
action.actor,
action.oldnode.name,
action.newnode.name,
time - action.time))
end
end
return true, S("Punch a node (range=@1, seconds=@2, limit=@3).",
range, seconds, limit)
end,
})
core.register_chatcommand("rollback", {
params = S("(<name> [<seconds>]) | (:<actor> [<seconds>])"),
description = S("Revert actions of a player. "
.. "Default for <seconds> is 60. "
.. "Set <seconds> to inf for no time limit"),
privs = {rollback=true},
func = function(name, param)
if not core.settings:get_bool("enable_rollback_recording") then
return false, S("Rollback functions are disabled.")
end
local target_name, seconds = string.match(param, ":([^ ]+) *(%d*)")
local rev_msg
if not target_name then
local player_name
player_name, seconds = string.match(param, "([^ ]+) *(%d*)")
if not player_name then
return false, S("Invalid parameters. "
.. "See /help rollback and "
.. "/help rollback_check.")
end
seconds = tonumber(seconds) or 60
target_name = "player:"..player_name
rev_msg = S("Reverting actions of player '@1' since @2 seconds.",
player_name, seconds)
else
seconds = tonumber(seconds) or 60
rev_msg = S("Reverting actions of @1 since @2 seconds.",
target_name, seconds)
end
core.chat_send_player(name, rev_msg)
local success, log = core.rollback_revert_actions_by(
target_name, seconds)
local response = ""
if #log > 100 then
response = S("(log is too long to show)").."\n"
else
for _, line in pairs(log) do
response = response .. line .. "\n"
end
end
if success then
response = response .. S("Reverting actions succeeded.")
else
response = response .. S("Reverting actions FAILED.")
end
return success, response
end,
})
core.register_chatcommand("status", {
description = S("Show server status"),
func = function(name, param)
local status = core.get_server_status(name, false)
if status and status ~= "" then
return true, status
end
return false, S("This command was disabled by a mod or game.")
end,
})
local function get_time(timeofday)
local time = math.floor(timeofday * 1440)
local minute = time % 60
local hour = (time - minute) / 60
return time, hour, minute
end
core.register_chatcommand("time", {
params = S("[<0..23>:<0..59> | <0..24000>]"),
description = S("Show or set time of day"),
privs = {},
func = function(name, param)
if param == "" then
local current_time = math.floor(core.get_timeofday() * 1440)
local minutes = current_time % 60
local hour = (current_time - minutes) / 60
return true, S("Current time is @1:@2.",
string.format("%d", hour),
string.format("%02d", minutes))
end
local player_privs = core.get_player_privs(name)
if not player_privs.settime then
return false, S("You don't have permission to run "
.. "this command (missing privilege: @1).", "settime")
end
local relative, negative, hour, minute = param:match("^(~?)(%-?)(%d+):(%d+)$")
if not relative then -- checking the first capture against nil suffices
local new_time = core.parse_relative_number(param, core.get_timeofday() * 24000)
if not new_time then
new_time = tonumber(param) or -1
else
new_time = new_time % 24000
end
if new_time ~= new_time or new_time < 0 or new_time > 24000 then
return false, S("Invalid time (must be between 0 and 24000).")
end
core.set_timeofday(new_time / 24000)
core.log("action", name .. " sets time to " .. new_time)
return true, S("Time of day changed.")
end
local new_time
hour = tonumber(hour)
minute = tonumber(minute)
if relative == "" then
if hour < 0 or hour > 23 then
return false, S("Invalid hour (must be between 0 and 23 inclusive).")
elseif minute < 0 or minute > 59 then
return false, S("Invalid minute (must be between 0 and 59 inclusive).")
end
new_time = (hour * 60 + minute) / 1440
else
if minute < 0 or minute > 59 then
return false, S("Invalid minute (must be between 0 and 59 inclusive).")
end
local current_time = core.get_timeofday()
if negative == "-" then -- negative time
hour, minute = -hour, -minute
end
new_time = (current_time + (hour * 60 + minute) / 1440) % 1
local _
_, hour, minute = get_time(new_time)
end
core.set_timeofday(new_time)
core.log("action", ("%s sets time to %d:%02d"):format(name, hour, minute))
return true, S("Time of day changed.")
end,
})
core.register_chatcommand("days", {
description = S("Show day count since world creation"),
func = function(name, param)
return true, S("Current day is @1.", core.get_day_count())
end
})
local function parse_shutdown_param(param)
local delay, reconnect, message
local one, two, three
one, two, three = param:match("^(%S+) +(%-r) +(.*)")
if one and two and three then
-- 3 arguments: delay, reconnect and message
return one, two, three
end
-- 2 arguments
one, two = param:match("^(%S+) +(.*)")
if one and two then
if tonumber(one) then
delay = one
if two == "-r" then
reconnect = two
else
message = two
end
elseif one == "-r" then
reconnect, message = one, two
end
return delay, reconnect, message
end
-- 1 argument
one = param:match("(.*)")
if tonumber(one) then
delay = one
elseif one == "-r" then
reconnect = one
else
message = one
end
return delay, reconnect, message
end
core.register_chatcommand("shutdown", {
params = S("[<delay_in_seconds> | -1] [-r] [<message>]"),
description = S("Shutdown server (-1 cancels a delayed shutdown, -r allows players to reconnect)"),
privs = {server=true},
func = function(name, param)
local delay, reconnect, message = parse_shutdown_param(param)
local bool_reconnect = reconnect == "-r"
if not message then
message = ""
end
delay = tonumber(delay) or 0
if delay == 0 then
core.log("action", name .. " shuts down server")
core.chat_send_all("*** "..S("Server shutting down (operator request)."))
end
core.request_shutdown(message:trim(), bool_reconnect, delay)
return true
end,
})
core.register_chatcommand("ban", {
params = S("[<name>]"),
description = S("Ban the IP of a player or show the ban list"),
privs = {ban=true},
func = function(name, param)
if param == "" then
local ban_list = core.get_ban_list()
if ban_list == "" then
return true, S("The ban list is empty.")
else
return true, S("Ban list: @1", ban_list)
end
end
if core.is_singleplayer() then
return false, S("You cannot ban players in singleplayer!")
end
if not core.get_player_by_name(param) then
return false, S("Player is not online.")
end
if not core.ban_player(param) then
return false, S("Failed to ban player.")
end
local desc = core.get_ban_description(param)
core.log("action", name .. " bans " .. desc .. ".")
return true, S("Banned @1.", desc)
end,
})
core.register_chatcommand("unban", {
params = S("<name> | <IP_address>"),
description = S("Remove IP ban belonging to a player/IP"),
privs = {ban=true},
func = function(name, param)
if not core.unban_player_or_ip(param) then
return false, S("Failed to unban player/IP.")
end
core.log("action", name .. " unbans " .. param)
return true, S("Unbanned @1.", param)
end,
})
core.register_chatcommand("kick", {
params = S("<name> [<reason>]"),
description = S("Kick a player"),
privs = {kick=true},
func = function(name, param)
local tokick, reason = param:match("([^ ]+) (.+)")
tokick = tokick or param
if not core.kick_player(tokick, reason) then
return false, S("Failed to kick player @1.", tokick)
end
local log_reason = ""
if reason then
log_reason = " with reason \"" .. reason .. "\""
end
core.log("action", name .. " kicks " .. tokick .. log_reason)
return true, S("Kicked @1.", tokick)
end,
})
core.register_chatcommand("clearobjects", {
params = S("[full | quick]"),
description = S("Clear all objects in world"),
privs = {server=true},
func = function(name, param)
local options = {}
if param == "" or param == "quick" then
options.mode = "quick"
elseif param == "full" then
options.mode = "full"
else
return false, S("Invalid usage, see /help clearobjects.")
end
core.log("action", name .. " clears objects ("
.. options.mode .. " mode).")
if options.mode == "full" then
core.chat_send_all(S("Clearing all objects. This may take a long time. "
.. "You may experience a timeout. (by @1)", name))
end
core.clear_objects(options)
core.log("action", "Object clearing done.")
core.chat_send_all("*** "..S("Cleared all objects."))
return true
end,
})
core.register_chatcommand("msg", {
params = S("<name> <message>"),
description = S("Send a direct message to a player"),
privs = {shout=true},
func = function(name, param)
local sendto, message = param:match("^(%S+)%s(.+)$")
if not sendto then
return false, S("Invalid usage, see /help msg.")
end
if not core.get_player_by_name(sendto) then
return false, S("The player @1 is not online.", sendto)
end
core.log("action", "DM from " .. name .. " to " .. sendto
.. ": " .. message)
core.chat_send_player(sendto, S("DM from @1: @2", name, message))
return true, S("Message sent.")
end,
})
core.register_chatcommand("last-login", {
params = S("[<name>]"),
description = S("Get the last login time of a player or yourself"),
func = function(name, param)
if param == "" then
param = name
end
local pauth = core.get_auth_handler().get_auth(param)
if pauth and pauth.last_login and pauth.last_login ~= -1 then
-- Time in UTC, ISO 8601 format
return true, S("@1's last login time was @2.",
param,
os.date("!%Y-%m-%dT%H:%M:%SZ", pauth.last_login))
end
return false, S("@1's last login time is unknown.", param)
end,
})
core.register_chatcommand("clearinv", {
params = S("[<name>]"),
description = S("Clear the inventory of yourself or another player"),
func = function(name, param)
local player
if param and param ~= "" and param ~= name then
if not core.check_player_privs(name, {server=true}) then
return false, S("You don't have permission to "
.. "clear another player's inventory "
.. "(missing privilege: @1).", "server")
end
player = core.get_player_by_name(param)
core.chat_send_player(param, S("@1 cleared your inventory.", name))
else
player = core.get_player_by_name(name)
end
if player then
player:get_inventory():set_list("main", {})
player:get_inventory():set_list("craft", {})
player:get_inventory():set_list("craftpreview", {})
core.log("action", name.." clears "..player:get_player_name().."'s inventory")
return true, S("Cleared @1's inventory.", player:get_player_name())
else
return false, S("Player must be online to clear inventory!")
end
end,
})
local function handle_kill_command(killer, victim)
if core.settings:get_bool("enable_damage") == false then
return false, S("Players can't be killed, damage has been disabled.")
end
local victimref = core.get_player_by_name(victim)
if victimref == nil then
return false, S("Player @1 is not online.", victim)
elseif victimref:get_hp() <= 0 then
if killer == victim then
return false, S("You are already dead.")
else
return false, S("@1 is already dead.", victim)
end
end
if killer ~= victim then
core.log("action", string.format("%s killed %s", killer, victim))
end
-- Kill victim
victimref:set_hp(0)
return true, S("@1 has been killed.", victim)
end
core.register_chatcommand("kill", {
params = S("[<name>]"),
description = S("Kill player or yourself"),
privs = {server=true},
func = function(name, param)
return handle_kill_command(name, param == "" and name or param)
end,
})