builtin/game/chatcommands.lua

   1 -- Minetest: builtin/game/chatcommands.lua
   2
   3 --
   4 -- Chat command handler
   5 --
   6
   7 core.chatcommands = core.registered_chatcommands -- BACKWARDS COMPATIBILITY
   8
   9 core.register_on_chat_message(function(name, message)
  10         local cmd, param = string.match(message, "^/([^ ]+) *(.*)")
  11         if not param then
  12                 param = ""
  13         end
  14         local cmd_def = core.registered_chatcommands[cmd]
  15         if not cmd_def then
  16                 return false
  17         end
  18         local has_privs, missing_privs = core.check_player_privs(name, cmd_def.privs)
  19         if has_privs then
  20                 core.set_last_run_mod(cmd_def.mod_origin)
  21                 local success, message = cmd_def.func(name, param)
  22                 if message then
  23                         core.chat_send_player(name, message)
  24                 end
  25         else
  26                 core.chat_send_player(name, "You don't have permission"
  27                                 .. " to run this command (missing privileges: "
  28                                 .. table.concat(missing_privs, ", ") .. ")")
  29         end
  30         return true  -- Handled chat message
  31 end)
  32
  33 if core.setting_getbool("profiler.load") then
  34         -- Run after register_chatcommand and its register_on_chat_message
  35         -- Before any chattcommands that should be profiled
  36         profiler.init_chatcommand()
  37 end
  38
  39 -- Parses a "range" string in the format of "here (number)" or
  40 -- "(x1, y1, z1) (x2, y2, z2)", returning two position vectors
  41 local function parse_range_str(player_name, str)
  42         local p1, p2
  43         local args = str:split(" ")
  44
  45         if args[1] == "here" then
  46                 p1, p2 = core.get_player_radius_area(player_name, tonumber(args[2]))
  47                 if p1 == nil then
  48                         return false, "Unable to get player " .. player_name .. " position"
  49                 end
  50         else
  51                 p1, p2 = core.string_to_area(str)
  52                 if p1 == nil then
  53                         return false, "Incorrect area format. Expected: (x1,y1,z1) (x2,y2,z2)"
  54                 end
  55         end
  56
  57         return p1, p2
  58 end
  59
  60 --
  61 -- Chat commands
  62 --
  63 core.register_chatcommand("me", {
  64         params = "<action>",
  65         description = "Display chat action (e.g., '/me orders a pizza' displays"
  66                         .. " '<player name> orders a pizza')",
  67         privs = {shout=true},
  68         func = function(name, param)
  69                 core.chat_send_all("* " .. name .. " " .. param)
  70         end,
  71 })
  72
  73 core.register_chatcommand("admin", {
  74         description = "Show the name of the server owner",
  75         func = function(name)
  76                 local admin = minetest.setting_get("name")
  77                 if admin then
  78                         return true, "The administrator of this server is "..admin.."."
  79                 else
  80                         return false, "There's no administrator named in the config file."
  81                 end
  82         end,
  83 })
  84
  85 core.register_chatcommand("privs", {
  86         params = "<name>",
  87         description = "Print privileges of player",
  88         func = function(caller, param)
  89                 param = param:trim()
  90                 local name = (param ~= "" and param or caller)
  91                 return true, "Privileges of " .. name .. ": "
  92                         .. core.privs_to_string(
  93                                 core.get_player_privs(name), ' ')
  94         end,
  95 })
  96
  97 local function handle_grant_command(caller, grantname, grantprivstr)
  98         local caller_privs = minetest.get_player_privs(caller)
  99         if not (caller_privs.privs or caller_privs.basic_privs) then
 100                 return false, "Your privileges are insufficient."
 101         end
 102
 103         if not core.get_auth_handler().get_auth(grantname) then
 104                 return false, "Player " .. grantname .. " does not exist."
 105         end
 106         local grantprivs = core.string_to_privs(grantprivstr)
 107         if grantprivstr == "all" then
 108                 grantprivs = core.registered_privileges
 109         end
 110         local privs = core.get_player_privs(grantname)
 111         local privs_unknown = ""
 112         local basic_privs =
 113                 core.string_to_privs(core.setting_get("basic_privs") or "interact,shout")
 114         for priv, _ in pairs(grantprivs) do
 115                 if not basic_privs[priv] and not caller_privs.privs then
 116                         return false, "Your privileges are insufficient."
 117                 end
 118                 if not core.registered_privileges[priv] then
 119                         privs_unknown = privs_unknown .. "Unknown privilege: " .. priv .. "\n"
 120                 end
 121                 privs[priv] = true
 122         end
 123         if privs_unknown ~= "" then
 124                 return false, privs_unknown
 125         end
 126         core.set_player_privs(grantname, privs)
 127         core.log("action", caller..' granted ('..core.privs_to_string(grantprivs, ', ')..') privileges to '..grantname)
 128         if grantname ~= caller then
 129                 core.chat_send_player(grantname, caller
 130                                 .. " granted you privileges: "
 131                                 .. core.privs_to_string(grantprivs, ' '))
 132         end
 133         return true, "Privileges of " .. grantname .. ": "
 134                 .. core.privs_to_string(
 135                         core.get_player_privs(grantname), ' ')
 136 end
 137
 138 core.register_chatcommand("grant", {
 139         params = "<name> <privilege>|all",
 140         description = "Give privilege to player",
 141         func = function(name, param)
 142                 local grantname, grantprivstr = string.match(param, "([^ ]+) (.+)")
 143                 if not grantname or not grantprivstr then
 144                         return false, "Invalid parameters (see /help grant)"
 145                 end
 146                 return handle_grant_command(name, grantname, grantprivstr)
 147         end,
 148 })
 149
 150 core.register_chatcommand("grantme", {
 151         params = "<privilege>|all",
 152         description = "Grant privileges to yourself",
 153         func = function(name, param)
 154                 if param == "" then
 155                         return false, "Invalid parameters (see /help grantme)"
 156                 end
 157                 return handle_grant_command(name, name, param)
 158         end,
 159 })
 160
 161 core.register_chatcommand("revoke", {
 162         params = "<name> <privilege>|all",
 163         description = "Remove privilege from player",
 164         privs = {},
 165         func = function(name, param)
 166                 if not core.check_player_privs(name, {privs=true}) and
 167                                 not core.check_player_privs(name, {basic_privs=true}) then
 168                         return false, "Your privileges are insufficient."
 169                 end
 170                 local revoke_name, revoke_priv_str = string.match(param, "([^ ]+) (.+)")
 171                 if not revoke_name or not revoke_priv_str then
 172                         return false, "Invalid parameters (see /help revoke)"
 173                 elseif not core.get_auth_handler().get_auth(revoke_name) then
 174                         return false, "Player " .. revoke_name .. " does not exist."
 175                 end
 176                 local revoke_privs = core.string_to_privs(revoke_priv_str)
 177                 local privs = core.get_player_privs(revoke_name)
 178                 local basic_privs =
 179                         core.string_to_privs(core.setting_get("basic_privs") or "interact,shout")
 180                 for priv, _ in pairs(revoke_privs) do
 181                         if not basic_privs[priv] and
 182                                         not core.check_player_privs(name, {privs=true}) then
 183                                 return false, "Your privileges are insufficient."
 184                         end
 185                 end
 186                 if revoke_priv_str == "all" then
 187                         privs = {}
 188                 else
 189                         for priv, _ in pairs(revoke_privs) do
 190                                 privs[priv] = nil
 191                         end
 192                 end
 193                 core.set_player_privs(revoke_name, privs)
 194                 core.log("action", name..' revoked ('
 195                                 ..core.privs_to_string(revoke_privs, ', ')
 196                                 ..') privileges from '..revoke_name)
 197                 if revoke_name ~= name then
 198                         core.chat_send_player(revoke_name, name
 199                                         .. " revoked privileges from you: "
 200                                         .. core.privs_to_string(revoke_privs, ' '))
 201                 end
 202                 return true, "Privileges of " .. revoke_name .. ": "
 203                         .. core.privs_to_string(
 204                                 core.get_player_privs(revoke_name), ' ')
 205         end,
 206 })
 207
 208 core.register_chatcommand("setpassword", {
 209         params = "<name> <password>",
 210         description = "Set player's password",
 211         privs = {password=true},
 212         func = function(name, param)
 213                 local toname, raw_password = string.match(param, "^([^ ]+) +(.+)$")
 214                 if not toname then
 215                         toname = param:match("^([^ ]+) *$")
 216                         raw_password = nil
 217                 end
 218                 if not toname then
 219                         return false, "Name field required"
 220                 end
 221                 local act_str_past = "?"
 222                 local act_str_pres = "?"
 223                 if not raw_password then
 224                         core.set_player_password(toname, "")
 225                         act_str_past = "cleared"
 226                         act_str_pres = "clears"
 227                 else
 228                         core.set_player_password(toname,
 229                                         core.get_password_hash(toname,
 230                                                         raw_password))
 231                         act_str_past = "set"
 232                         act_str_pres = "sets"
 233                 end
 234                 if toname ~= name then
 235                         core.chat_send_player(toname, "Your password was "
 236                                         .. act_str_past .. " by " .. name)
 237                 end
 238
 239                 core.log("action", name .. " " .. act_str_pres
 240                 .. " password of " .. toname .. ".")
 241
 242                 return true, "Password of player \"" .. toname .. "\" " .. act_str_past
 243         end,
 244 })
 245
 246 core.register_chatcommand("clearpassword", {
 247         params = "<name>",
 248         description = "Set empty password",
 249         privs = {password=true},
 250         func = function(name, param)
 251                 local toname = param
 252                 if toname == "" then
 253                         return false, "Name field required"
 254                 end
 255                 core.set_player_password(toname, '')
 256
 257                 core.log("action", name .. " clears password of " .. toname .. ".")
 258
 259                 return true, "Password of player \"" .. toname .. "\" cleared"
 260         end,
 261 })
 262
 263 core.register_chatcommand("auth_reload", {
 264         params = "",
 265         description = "Reload authentication data",
 266         privs = {server=true},
 267         func = function(name, param)
 268                 local done = core.auth_reload()
 269                 return done, (done and "Done." or "Failed.")
 270         end,
 271 })
 272
 273 core.register_chatcommand("teleport", {
 274         params = "<X>,<Y>,<Z> | <to_name> | <name> <X>,<Y>,<Z> | <name> <to_name>",
 275         description = "Teleport to player or position",
 276         privs = {teleport=true},
 277         func = function(name, param)
 278                 -- Returns (pos, true) if found, otherwise (pos, false)
 279                 local function find_free_position_near(pos)
 280                         local tries = {
 281                                 {x=1,y=0,z=0},
 282                                 {x=-1,y=0,z=0},
 283                                 {x=0,y=0,z=1},
 284                                 {x=0,y=0,z=-1},
 285                         }
 286                         for _, d in ipairs(tries) do
 287                                 local p = {x = pos.x+d.x, y = pos.y+d.y, z = pos.z+d.z}
 288                                 local n = core.get_node_or_nil(p)
 289                                 if n and n.name then
 290                                         local def = core.registered_nodes[n.name]
 291                                         if def and not def.walkable then
 292                                                 return p, true
 293                                         end
 294                                 end
 295                         end
 296                         return pos, false
 297                 end
 298
 299                 local teleportee = nil
 300                 local p = {}
 301                 p.x, p.y, p.z = string.match(param, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
 302                 p.x = tonumber(p.x)
 303                 p.y = tonumber(p.y)
 304                 p.z = tonumber(p.z)
 305                 if p.x and p.y and p.z then
 306                         local lm = 31000
 307                         if p.x < -lm or p.x > lm or p.y < -lm or p.y > lm or p.z < -lm or p.z > lm then
 308                                 return false, "Cannot teleport out of map bounds!"
 309                         end
 310                         teleportee = core.get_player_by_name(name)
 311                         if teleportee then
 312                                 teleportee:setpos(p)
 313                                 return true, "Teleporting to "..core.pos_to_string(p)
 314                         end
 315                 end
 316
 317                 local teleportee = nil
 318                 local p = nil
 319                 local target_name = nil
 320                 target_name = param:match("^([^ ]+)$")
 321                 teleportee = core.get_player_by_name(name)
 322                 if target_name then
 323                         local target = core.get_player_by_name(target_name)
 324                         if target then
 325                                 p = target:getpos()
 326                         end
 327                 end
 328                 if teleportee and p then
 329                         p = find_free_position_near(p)
 330                         teleportee:setpos(p)
 331                         return true, "Teleporting to " .. target_name
 332                                         .. " at "..core.pos_to_string(p)
 333                 end
 334
 335                 if not core.check_player_privs(name, {bring=true}) then
 336                         return false, "You don't have permission to teleport other players (missing bring privilege)"
 337                 end
 338
 339                 local teleportee = nil
 340                 local p = {}
 341                 local teleportee_name = nil
 342                 teleportee_name, p.x, p.y, p.z = param:match(
 343                                 "^([^ ]+) +([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
 344                 p.x, p.y, p.z = tonumber(p.x), tonumber(p.y), tonumber(p.z)
 345                 if teleportee_name then
 346                         teleportee = core.get_player_by_name(teleportee_name)
 347                 end
 348                 if teleportee and p.x and p.y and p.z then
 349                         teleportee:setpos(p)
 350                         return true, "Teleporting " .. teleportee_name
 351                                         .. " to " .. core.pos_to_string(p)
 352                 end
 353
 354                 local teleportee = nil
 355                 local p = nil
 356                 local teleportee_name = nil
 357                 local target_name = nil
 358                 teleportee_name, target_name = string.match(param, "^([^ ]+) +([^ ]+)$")
 359                 if teleportee_name then
 360                         teleportee = core.get_player_by_name(teleportee_name)
 361                 end
 362                 if target_name then
 363                         local target = core.get_player_by_name(target_name)
 364                         if target then
 365                                 p = target:getpos()
 366                         end
 367                 end
 368                 if teleportee and p then
 369                         p = find_free_position_near(p)
 370                         teleportee:setpos(p)
 371                         return true, "Teleporting " .. teleportee_name
 372                                         .. " to " .. target_name
 373                                         .. " at " .. core.pos_to_string(p)
 374                 end
 375
 376                 return false, 'Invalid parameters ("' .. param
 377                                 .. '") or player not found (see /help teleport)'
 378         end,
 379 })
 380
 381 core.register_chatcommand("set", {
 382         params = "[-n] <name> <value> | <name>",
 383         description = "Set or read server configuration setting",
 384         privs = {server=true},
 385         func = function(name, param)
 386                 local arg, setname, setvalue = string.match(param, "(-[n]) ([^ ]+) (.+)")
 387                 if arg and arg == "-n" and setname and setvalue then
 388                         core.setting_set(setname, setvalue)
 389                         return true, setname .. " = " .. setvalue
 390                 end
 391                 local setname, setvalue = string.match(param, "([^ ]+) (.+)")
 392                 if setname and setvalue then
 393                         if not core.setting_get(setname) then
 394                                 return false, "Failed. Use '/set -n <name> <value>' to create a new setting."
 395                         end
 396                         core.setting_set(setname, setvalue)
 397                         return true, setname .. " = " .. setvalue
 398                 end
 399                 local setname = string.match(param, "([^ ]+)")
 400                 if setname then
 401                         local setvalue = core.setting_get(setname)
 402                         if not setvalue then
 403                                 setvalue = "<not set>"
 404                         end
 405                         return true, setname .. " = " .. setvalue
 406                 end
 407                 return false, "Invalid parameters (see /help set)."
 408         end,
 409 })
 410
 411 local function emergeblocks_callback(pos, action, num_calls_remaining, ctx)
 412         if ctx.total_blocks == 0 then
 413                 ctx.total_blocks   = num_calls_remaining + 1
 414                 ctx.current_blocks = 0
 415         end
 416         ctx.current_blocks = ctx.current_blocks + 1
 417
 418         if ctx.current_blocks == ctx.total_blocks then
 419                 core.chat_send_player(ctx.requestor_name,
 420                         string.format("Finished emerging %d blocks in %.2fms.",
 421                         ctx.total_blocks, (os.clock() - ctx.start_time) * 1000))
 422         end
 423 end
 424
 425 local function emergeblocks_progress_update(ctx)
 426         if ctx.current_blocks ~= ctx.total_blocks then
 427                 core.chat_send_player(ctx.requestor_name,
 428                         string.format("emergeblocks update: %d/%d blocks emerged (%.1f%%)",
 429                         ctx.current_blocks, ctx.total_blocks,
 430                         (ctx.current_blocks / ctx.total_blocks) * 100))
 431
 432                 core.after(2, emergeblocks_progress_update, ctx)
 433         end
 434 end
 435
 436 core.register_chatcommand("emergeblocks", {
 437         params = "(here [radius]) | (<pos1> <pos2>)",
 438         description = "Load (or, if nonexistent, generate) map blocks "
 439                 .. "contained in area pos1 to pos2",
 440         privs = {server=true},
 441         func = function(name, param)
 442                 local p1, p2 = parse_range_str(name, param)
 443                 if p1 == false then
 444                         return false, p2
 445                 end
 446
 447                 local context = {
 448                         current_blocks = 0,
 449                         total_blocks   = 0,
 450                         start_time     = os.clock(),
 451                         requestor_name = name
 452                 }
 453
 454                 core.emerge_area(p1, p2, emergeblocks_callback, context)
 455                 core.after(2, emergeblocks_progress_update, context)
 456
 457                 return true, "Started emerge of area ranging from " ..
 458                         core.pos_to_string(p1, 1) .. " to " .. core.pos_to_string(p2, 1)
 459         end,
 460 })
 461
 462 core.register_chatcommand("deleteblocks", {
 463         params = "(here [radius]) | (<pos1> <pos2>)",
 464         description = "Delete map blocks contained in area pos1 to pos2",
 465         privs = {server=true},
 466         func = function(name, param)
 467                 local p1, p2 = parse_range_str(name, param)
 468                 if p1 == false then
 469                         return false, p2
 470                 end
 471
 472                 if core.delete_area(p1, p2) then
 473                         return true, "Successfully cleared area ranging from " ..
 474                                 core.pos_to_string(p1, 1) .. " to " .. core.pos_to_string(p2, 1)
 475                 else
 476                         return false, "Failed to clear one or more blocks in area"
 477                 end
 478         end,
 479 })
 480
 481 core.register_chatcommand("mods", {
 482         params = "",
 483         description = "List mods installed on the server",
 484         privs = {},
 485         func = function(name, param)
 486                 return true, table.concat(core.get_modnames(), ", ")
 487         end,
 488 })
 489
 490 local function handle_give_command(cmd, giver, receiver, stackstring)
 491         core.log("action", giver .. " invoked " .. cmd
 492                         .. ', stackstring="' .. stackstring .. '"')
 493         local itemstack = ItemStack(stackstring)
 494         if itemstack:is_empty() then
 495                 return false, "Cannot give an empty item"
 496         elseif not itemstack:is_known() then
 497                 return false, "Cannot give an unknown item"
 498         end
 499         local receiverref = core.get_player_by_name(receiver)
 500         if receiverref == nil then
 501                 return false, receiver .. " is not a known player"
 502         end
 503         local leftover = receiverref:get_inventory():add_item("main", itemstack)
 504         local partiality
 505         if leftover:is_empty() then
 506                 partiality = ""
 507         elseif leftover:get_count() == itemstack:get_count() then
 508                 partiality = "could not be "
 509         else
 510                 partiality = "partially "
 511         end
 512         -- The actual item stack string may be different from what the "giver"
 513         -- entered (e.g. big numbers are always interpreted as 2^16-1).
 514         stackstring = itemstack:to_string()
 515         if giver == receiver then
 516                 return true, ("%q %sadded to inventory.")
 517                                 :format(stackstring, partiality)
 518         else
 519                 core.chat_send_player(receiver, ("%q %sadded to inventory.")
 520                                 :format(stackstring, partiality))
 521                 return true, ("%q %sadded to %s's inventory.")
 522                                 :format(stackstring, partiality, receiver)
 523         end
 524 end
 525
 526 core.register_chatcommand("give", {
 527         params = "<name> <ItemString>",
 528         description = "Give item to player",
 529         privs = {give=true},
 530         func = function(name, param)
 531                 local toname, itemstring = string.match(param, "^([^ ]+) +(.+)$")
 532                 if not toname or not itemstring then
 533                         return false, "Name and ItemString required"
 534                 end
 535                 return handle_give_command("/give", name, toname, itemstring)
 536         end,
 537 })
 538
 539 core.register_chatcommand("giveme", {
 540         params = "<ItemString>",
 541         description = "Give item to yourself",
 542         privs = {give=true},
 543         func = function(name, param)
 544                 local itemstring = string.match(param, "(.+)$")
 545                 if not itemstring then
 546                         return false, "ItemString required"
 547                 end
 548                 return handle_give_command("/giveme", name, name, itemstring)
 549         end,
 550 })
 551
 552 core.register_chatcommand("spawnentity", {
 553         params = "<EntityName> [<X>,<Y>,<Z>]",
 554         description = "Spawn entity at given (or your) position",
 555         privs = {give=true, interact=true},
 556         func = function(name, param)
 557                 local entityname, p = string.match(param, "^([^ ]+) *(.*)$")
 558                 if not entityname then
 559                         return false, "EntityName required"
 560                 end
 561                 core.log("action", ("%s invokes /spawnentity, entityname=%q")
 562                                 :format(name, entityname))
 563                 local player = core.get_player_by_name(name)
 564                 if player == nil then
 565                         core.log("error", "Unable to spawn entity, player is nil")
 566                         return false, "Unable to spawn entity, player is nil"
 567                 end
 568                 if p == "" then
 569                         p = player:getpos()
 570                 else
 571                         p = core.string_to_pos(p)
 572                         if p == nil then
 573                                 return false, "Invalid parameters ('" .. param .. "')"
 574                         end
 575                 end
 576                 p.y = p.y + 1
 577                 core.add_entity(p, entityname)
 578                 return true, ("%q spawned."):format(entityname)
 579         end,
 580 })
 581
 582 core.register_chatcommand("pulverize", {
 583         params = "",
 584         description = "Destroy item in hand",
 585         func = function(name, param)
 586                 local player = core.get_player_by_name(name)
 587                 if not player then
 588                         core.log("error", "Unable to pulverize, no player.")
 589                         return false, "Unable to pulverize, no player."
 590                 end
 591                 if player:get_wielded_item():is_empty() then
 592                         return false, "Unable to pulverize, no item in hand."
 593                 end
 594                 player:set_wielded_item(nil)
 595                 return true, "An item was pulverized."
 596         end,
 597 })
 598
 599 -- Key = player name
 600 core.rollback_punch_callbacks = {}
 601
 602 core.register_on_punchnode(function(pos, node, puncher)
 603         local name = puncher:get_player_name()
 604         if core.rollback_punch_callbacks[name] then
 605                 core.rollback_punch_callbacks[name](pos, node, puncher)
 606                 core.rollback_punch_callbacks[name] = nil
 607         end
 608 end)
 609
 610 core.register_chatcommand("rollback_check", {
 611         params = "[<range>] [<seconds>] [limit]",
 612         description = "Check who last touched a node or a node near it"
 613                         .. " within the time specified by <seconds>. Default: range = 0,"
 614                         .. " seconds = 86400 = 24h, limit = 5",
 615         privs = {rollback=true},
 616         func = function(name, param)
 617                 if not core.setting_getbool("enable_rollback_recording") then
 618                         return false, "Rollback functions are disabled."
 619                 end
 620                 local range, seconds, limit =
 621                         param:match("(%d+) *(%d*) *(%d*)")
 622                 range = tonumber(range) or 0
 623                 seconds = tonumber(seconds) or 86400
 624                 limit = tonumber(limit) or 5
 625                 if limit > 100 then
 626                         return false, "That limit is too high!"
 627                 end
 628
 629                 core.rollback_punch_callbacks[name] = function(pos, node, puncher)
 630                         local name = puncher:get_player_name()
 631                         core.chat_send_player(name, "Checking " .. core.pos_to_string(pos) .. "...")
 632                         local actions = core.rollback_get_node_actions(pos, range, seconds, limit)
 633                         if not actions then
 634                                 core.chat_send_player(name, "Rollback functions are disabled")
 635                                 return
 636                         end
 637                         local num_actions = #actions
 638                         if num_actions == 0 then
 639                                 core.chat_send_player(name, "Nobody has touched"
 640                                                 .. " the specified location in "
 641                                                 .. seconds .. " seconds")
 642                                 return
 643                         end
 644                         local time = os.time()
 645                         for i = num_actions, 1, -1 do
 646                                 local action = actions[i]
 647                                 core.chat_send_player(name,
 648                                         ("%s %s %s -> %s %d seconds ago.")
 649                                                 :format(
 650                                                         core.pos_to_string(action.pos),
 651                                                         action.actor,
 652                                                         action.oldnode.name,
 653                                                         action.newnode.name,
 654                                                         time - action.time))
 655                         end
 656                 end
 657
 658                 return true, "Punch a node (range=" .. range .. ", seconds="
 659                                 .. seconds .. "s, limit=" .. limit .. ")"
 660         end,
 661 })
 662
 663 core.register_chatcommand("rollback", {
 664         params = "<player name> [<seconds>] | :<actor> [<seconds>]",
 665         description = "Revert actions of a player. Default for <seconds> is 60",
 666         privs = {rollback=true},
 667         func = function(name, param)
 668                 if not core.setting_getbool("enable_rollback_recording") then
 669                         return false, "Rollback functions are disabled."
 670                 end
 671                 local target_name, seconds = string.match(param, ":([^ ]+) *(%d*)")
 672                 if not target_name then
 673                         local player_name = nil
 674                         player_name, seconds = string.match(param, "([^ ]+) *(%d*)")
 675                         if not player_name then
 676                                 return false, "Invalid parameters. See /help rollback"
 677                                                 .. " and /help rollback_check."
 678                         end
 679                         target_name = "player:"..player_name
 680                 end
 681                 seconds = tonumber(seconds) or 60
 682                 core.chat_send_player(name, "Reverting actions of "
 683                                 .. target_name .. " since "
 684                                 .. seconds .. " seconds.")
 685                 local success, log = core.rollback_revert_actions_by(
 686                                 target_name, seconds)
 687                 local response = ""
 688                 if #log > 100 then
 689                         response = "(log is too long to show)\n"
 690                 else
 691                         for _, line in pairs(log) do
 692                                 response = response .. line .. "\n"
 693                         end
 694                 end
 695                 response = response .. "Reverting actions "
 696                                 .. (success and "succeeded." or "FAILED.")
 697                 return success, response
 698         end,
 699 })
 700
 701 core.register_chatcommand("status", {
 702         description = "Print server status",
 703         func = function(name, param)
 704                 return true, core.get_server_status()
 705         end,
 706 })
 707
 708 core.register_chatcommand("time", {
 709         params = "<0..23>:<0..59> | <0..24000>",
 710         description = "Set time of day",
 711         privs = {},
 712         func = function(name, param)
 713                 if param == "" then
 714                         local current_time = math.floor(core.get_timeofday() * 1440)
 715                         local minutes = current_time % 60
 716                         local hour = (current_time - minutes) / 60
 717                         return true, ("Current time is %d:%02d"):format(hour, minutes)
 718                 end
 719                 local player_privs = core.get_player_privs(name)
 720                 if not player_privs.settime then
 721                         return false, "You don't have permission to run this command " ..
 722                                 "(missing privilege: settime)."
 723                 end
 724                 local hour, minute = param:match("^(%d+):(%d+)$")
 725                 if not hour then
 726                         local new_time = tonumber(param)
 727                         if not new_time then
 728                                 return false, "Invalid time."
 729                         end
 730                         -- Backward compatibility.
 731                         core.set_timeofday((new_time % 24000) / 24000)
 732                         core.log("action", name .. " sets time to " .. new_time)
 733                         return true, "Time of day changed."
 734                 end
 735                 hour = tonumber(hour)
 736                 minute = tonumber(minute)
 737                 if hour < 0 or hour > 23 then
 738                         return false, "Invalid hour (must be between 0 and 23 inclusive)."
 739                 elseif minute < 0 or minute > 59 then
 740                         return false, "Invalid minute (must be between 0 and 59 inclusive)."
 741                 end
 742                 core.set_timeofday((hour * 60 + minute) / 1440)
 743                 core.log("action", ("%s sets time to %d:%02d"):format(name, hour, minute))
 744                 return true, "Time of day changed."
 745         end,
 746 })
 747
 748 core.register_chatcommand("days", {
 749         description = "Display day count",
 750         func = function(name, param)
 751                 return true, "Current day is " .. core.get_day_count()
 752         end
 753 })
 754
 755 core.register_chatcommand("shutdown", {
 756         description = "Shutdown server",
 757         params = "[reconnect] [message]",
 758         privs = {server=true},
 759         func = function(name, param)
 760                 core.log("action", name .. " shuts down server")
 761                 core.chat_send_all("*** Server shutting down (operator request).")
 762                 local reconnect, message = param:match("([^ ]+)(.*)")
 763                 message = message or ""
 764                 core.request_shutdown(message:trim(), core.is_yes(reconnect))
 765         end,
 766 })
 767
 768 core.register_chatcommand("ban", {
 769         params = "<name>",
 770         description = "Ban IP of player",
 771         privs = {ban=true},
 772         func = function(name, param)
 773                 if param == "" then
 774                         return true, "Ban list: " .. core.get_ban_list()
 775                 end
 776                 if not core.get_player_by_name(param) then
 777                         return false, "No such player."
 778                 end
 779                 if not core.ban_player(param) then
 780                         return false, "Failed to ban player."
 781                 end
 782                 local desc = core.get_ban_description(param)
 783                 core.log("action", name .. " bans " .. desc .. ".")
 784                 return true, "Banned " .. desc .. "."
 785         end,
 786 })
 787
 788 core.register_chatcommand("unban", {
 789         params = "<name/ip>",
 790         description = "Remove IP ban",
 791         privs = {ban=true},
 792         func = function(name, param)
 793                 if not core.unban_player_or_ip(param) then
 794                         return false, "Failed to unban player/IP."
 795                 end
 796                 core.log("action", name .. " unbans " .. param)
 797                 return true, "Unbanned " .. param
 798         end,
 799 })
 800
 801 core.register_chatcommand("kick", {
 802         params = "<name> [reason]",
 803         description = "Kick a player",
 804         privs = {kick=true},
 805         func = function(name, param)
 806                 local tokick, reason = param:match("([^ ]+) (.+)")
 807                 tokick = tokick or param
 808                 if not core.kick_player(tokick, reason) then
 809                         return false, "Failed to kick player " .. tokick
 810                 end
 811                 local log_reason = ""
 812                 if reason then
 813                         log_reason = " with reason \"" .. reason .. "\""
 814                 end
 815                 core.log("action", name .. " kicks " .. tokick .. log_reason)
 816                 return true, "Kicked " .. tokick
 817         end,
 818 })
 819
 820 core.register_chatcommand("clearobjects", {
 821         params = "[full|quick]",
 822         description = "Clear all objects in world",
 823         privs = {server=true},
 824         func = function(name, param)
 825                 local options = {}
 826                 if param == "" or param == "full" then
 827                         options.mode = "full"
 828                 elseif param == "quick" then
 829                         options.mode = "quick"
 830                 else
 831                         return false, "Invalid usage, see /help clearobjects."
 832                 end
 833
 834                 core.log("action", name .. " clears all objects ("
 835                                 .. options.mode .. " mode).")
 836                 core.chat_send_all("Clearing all objects.  This may take long."
 837                                 .. "  You may experience a timeout.  (by "
 838                                 .. name .. ")")
 839                 core.clear_objects(options)
 840                 core.log("action", "Object clearing done.")
 841                 core.chat_send_all("*** Cleared all objects.")
 842         end,
 843 })
 844
 845 core.register_chatcommand("msg", {
 846         params = "<name> <message>",
 847         description = "Send a private message",
 848         privs = {shout=true},
 849         func = function(name, param)
 850                 local sendto, message = param:match("^(%S+)%s(.+)$")
 851                 if not sendto then
 852                         return false, "Invalid usage, see /help msg."
 853                 end
 854                 if not core.get_player_by_name(sendto) then
 855                         return false, "The player " .. sendto
 856                                         .. " is not online."
 857                 end
 858                 core.log("action", "PM from " .. name .. " to " .. sendto
 859                                 .. ": " .. message)
 860                 core.chat_send_player(sendto, "PM from " .. name .. ": "
 861                                 .. message)
 862                 return true, "Message sent."
 863         end,
 864 })
 865
 866 core.register_chatcommand("last-login", {
 867         params = "[name]",
 868         description = "Get the last login time of a player",
 869         func = function(name, param)
 870                 if param == "" then
 871                         param = name
 872                 end
 873                 local pauth = core.get_auth_handler().get_auth(param)
 874                 if pauth and pauth.last_login then
 875                         -- Time in UTC, ISO 8601 format
 876                         return true, "Last login time was " ..
 877                                 os.date("!%Y-%m-%dT%H:%M:%SZ", pauth.last_login)
 878                 end
 879                 return false, "Last login time is unknown"
 880         end,
 881 })