builtin/chatcommands.lua

   1 -- Minetest: builtin/chatcommands.lua
   2
   3 --
   4 -- Chat command handler
   5 --
   6
   7 minetest.chatcommands = {}
   8 function minetest.register_chatcommand(cmd, def)
   9         def = def or {}
  10         def.params = def.params or ""
  11         def.description = def.description or ""
  12         def.privs = def.privs or {}
  13         minetest.chatcommands[cmd] = def
  14 end
  15
  16 minetest.register_on_chat_message(function(name, message)
  17         local cmd, param = string.match(message, "^/([^ ]+) *(.*)")
  18         if not param then
  19                 param = ""
  20         end
  21         local cmd_def = minetest.chatcommands[cmd]
  22         if cmd_def then
  23                 local has_privs, missing_privs = minetest.check_player_privs(name, cmd_def.privs)
  24                 if has_privs then
  25                         cmd_def.func(name, param)
  26                 else
  27                         minetest.chat_send_player(name, "You don't have permission to run this command (missing privileges: "..table.concat(missing_privs, ", ")..")")
  28                 end
  29                 return true -- handled chat message
  30         end
  31         return false
  32 end)
  33
  34 --
  35 -- Chat commands
  36 --
  37 minetest.register_chatcommand("me", {
  38         params = "<action>",
  39         description = "chat action (eg. /me orders a pizza)",
  40         privs = {shout=true},
  41         func = function(name, param)
  42                 minetest.chat_send_all("* " .. name .. " " .. param)
  43         end,
  44 })
  45
  46 minetest.register_chatcommand("help", {
  47         privs = {},
  48         params = "(nothing)/all/privs/<cmd>",
  49         description = "Get help for commands or list privileges",
  50         func = function(name, param)
  51                 local format_help_line = function(cmd, def)
  52                         local msg = "/"..cmd
  53                         if def.params and def.params ~= "" then msg = msg .. " " .. def.params end
  54                         if def.description and def.description ~= "" then msg = msg .. ": " .. def.description end
  55                         return msg
  56                 end
  57                 if param == "" then
  58                         local msg = ""
  59                         cmds = {}
  60                         for cmd, def in pairs(minetest.chatcommands) do
  61                                 if minetest.check_player_privs(name, def.privs) then
  62                                         table.insert(cmds, cmd)
  63                                 end
  64                         end
  65                         minetest.chat_send_player(name, "Available commands: "..table.concat(cmds, " "))
  66                         minetest.chat_send_player(name, "Use '/help <cmd>' to get more information, or '/help all' to list everything.")
  67                 elseif param == "all" then
  68                         minetest.chat_send_player(name, "Available commands:")
  69                         for cmd, def in pairs(minetest.chatcommands) do
  70                                 if minetest.check_player_privs(name, def.privs) then
  71                                         minetest.chat_send_player(name, format_help_line(cmd, def))
  72                                 end
  73                         end
  74                 elseif param == "privs" then
  75                         minetest.chat_send_player(name, "Available privileges:")
  76                         for priv, def in pairs(minetest.registered_privileges) do
  77                                 minetest.chat_send_player(name, priv..": "..def.description)
  78                         end
  79                 else
  80                         local cmd = param
  81                         def = minetest.chatcommands[cmd]
  82                         if not def then
  83                                 minetest.chat_send_player(name, "Command not available: "..cmd)
  84                         else
  85                                 minetest.chat_send_player(name, format_help_line(cmd, def))
  86                         end
  87                 end
  88         end,
  89 })
  90 minetest.register_chatcommand("privs", {
  91         params = "<name>",
  92         description = "print out privileges of player",
  93         func = function(name, param)
  94                 if param == "" then
  95                         param = name
  96                 else
  97                         --[[if not minetest.check_player_privs(name, {privs=true}) then
  98                                 minetest.chat_send_player(name, "Privileges of "..param.." are hidden from you.")
  99                                 return
 100                         end]]
 101                 end
 102                 minetest.chat_send_player(name, "Privileges of "..param..": "..minetest.privs_to_string(minetest.get_player_privs(param), ' '))
 103         end,
 104 })
 105 minetest.register_chatcommand("grant", {
 106         params = "<name> <privilege>|all",
 107         description = "Give privilege to player",
 108         privs = {},
 109         func = function(name, param)
 110                 if not minetest.check_player_privs(name, {privs=true}) and
 111                                 not minetest.check_player_privs(name, {basic_privs=true}) then
 112                         minetest.chat_send_player(name, "Your privileges are insufficient.")
 113                         return
 114                 end
 115                 local grantname, grantprivstr = string.match(param, "([^ ]+) (.+)")
 116                 if not grantname or not grantprivstr then
 117                         minetest.chat_send_player(name, "Invalid parameters (see /help grant)")
 118                         return
 119                 elseif not minetest.auth_table[grantname] then
 120                         minetest.chat_send_player(name, "Player "..grantname.." does not exist.")
 121                         return
 122                 end
 123                 local grantprivs = minetest.string_to_privs(grantprivstr)
 124                 if grantprivstr == "all" then
 125                         grantprivs = minetest.registered_privileges
 126                 end
 127                 local privs = minetest.get_player_privs(grantname)
 128                 local privs_known = true
 129                 for priv, _ in pairs(grantprivs) do
 130                         if priv ~= "interact" and priv ~= "shout" and priv ~= "interact_extra" and not minetest.check_player_privs(name, {privs=true}) then
 131                                 minetest.chat_send_player(name, "Your privileges are insufficient.")
 132                                 return
 133                         end
 134                         if not minetest.registered_privileges[priv] then
 135                                 minetest.chat_send_player(name, "Unknown privilege: "..priv)
 136                                 privs_known = false
 137                         end
 138                         privs[priv] = true
 139                 end
 140                 if not privs_known then
 141                         return
 142                 end
 143                 minetest.set_player_privs(grantname, privs)
 144                 minetest.log(name..' granted ('..minetest.privs_to_string(grantprivs, ', ')..') privileges to '..grantname)
 145                 minetest.chat_send_player(name, "Privileges of "..grantname..": "..minetest.privs_to_string(minetest.get_player_privs(grantname), ' '))
 146                 if grantname ~= name then
 147                         minetest.chat_send_player(grantname, name.." granted you privileges: "..minetest.privs_to_string(grantprivs, ' '))
 148                 end
 149         end,
 150 })
 151 minetest.register_chatcommand("revoke", {
 152         params = "<name> <privilege>|all",
 153         description = "Remove privilege from player",
 154         privs = {},
 155         func = function(name, param)
 156                 if not minetest.check_player_privs(name, {privs=true}) and
 157                                 not minetest.check_player_privs(name, {basic_privs=true}) then
 158                         minetest.chat_send_player(name, "Your privileges are insufficient.")
 159                         return
 160                 end
 161                 local revokename, revokeprivstr = string.match(param, "([^ ]+) (.+)")
 162                 if not revokename or not revokeprivstr then
 163                         minetest.chat_send_player(name, "Invalid parameters (see /help revoke)")
 164                         return
 165                 elseif not minetest.auth_table[revokename] then
 166                         minetest.chat_send_player(name, "Player "..revokename.." does not exist.")
 167                         return
 168                 end
 169                 local revokeprivs = minetest.string_to_privs(revokeprivstr)
 170                 local privs = minetest.get_player_privs(revokename)
 171                 for priv, _ in pairs(revokeprivs) do
 172                         if priv ~= "interact" and priv ~= "shout" and priv ~= "interact_extra" and not minetest.check_player_privs(name, {privs=true}) then
 173                                 minetest.chat_send_player(name, "Your privileges are insufficient.")
 174                                 return
 175                         end
 176                 end
 177                 if revokeprivstr == "all" then
 178                         privs = {}
 179                 else
 180                         for priv, _ in pairs(revokeprivs) do
 181                                 privs[priv] = nil
 182                         end
 183                 end
 184                 minetest.set_player_privs(revokename, privs)
 185                 minetest.log(name..' revoked ('..minetest.privs_to_string(revokeprivs, ', ')..') privileges from '..revokename)
 186                 minetest.chat_send_player(name, "Privileges of "..revokename..": "..minetest.privs_to_string(minetest.get_player_privs(revokename), ' '))
 187                 if revokename ~= name then
 188                         minetest.chat_send_player(revokename, name.." revoked privileges from you: "..minetest.privs_to_string(revokeprivs, ' '))
 189                 end
 190         end,
 191 })
 192 minetest.register_chatcommand("setpassword", {
 193         params = "<name> <password>",
 194         description = "set given password",
 195         privs = {password=true},
 196         func = function(name, param)
 197                 local toname, raw_password = string.match(param, "^([^ ]+) +(.+)$")
 198                 if not toname then
 199                         toname = string.match(param, "^([^ ]+) *$")
 200                         raw_password = nil
 201                 end
 202                 if not toname then
 203                         minetest.chat_send_player(name, "Name field required")
 204                         return
 205                 end
 206                 local actstr = "?"
 207                 if not raw_password then
 208                         minetest.set_player_password(toname, "")
 209                         actstr = "cleared"
 210                 else
 211                         minetest.set_player_password(toname, minetest.get_password_hash(toname, raw_password))
 212                         actstr = "set"
 213                 end
 214                 minetest.chat_send_player(name, "Password of player \""..toname.."\" "..actstr)
 215                 if toname ~= name then
 216                         minetest.chat_send_player(toname, "Your password was "..actstr.." by "..name)
 217                 end
 218         end,
 219 })
 220 minetest.register_chatcommand("clearpassword", {
 221         params = "<name>",
 222         description = "set empty password",
 223         privs = {password=true},
 224         func = function(name, param)
 225                 toname = param
 226                 if toname == "" then
 227                         minetest.chat_send_player(name, "Name field required")
 228                         return
 229                 end
 230                 minetest.set_player_password(toname, '')
 231                 minetest.chat_send_player(name, "Password of player \""..toname.."\" cleared")
 232         end,
 233 })
 234
 235 minetest.register_chatcommand("auth_reload", {
 236         params = "",
 237         description = "reload authentication data",
 238         privs = {server=true},
 239         func = function(name, param)
 240                 local done = minetest.auth_reload()
 241                 if done then
 242                         minetest.chat_send_player(name, "Done.")
 243                 else
 244                         minetest.chat_send_player(name, "Failed.")
 245                 end
 246         end,
 247 })
 248
 249 minetest.register_chatcommand("teleport", {
 250         params = "<X>,<Y>,<Z> | <to_name> | <name> <X>,<Y>,<Z> | <name> <to_name>",
 251         description = "teleport to given position",
 252         privs = {teleport=true},
 253         func = function(name, param)
 254                 -- Returns (pos, true) if found, otherwise (pos, false)
 255                 local function find_free_position_near(pos)
 256                         local tries = {
 257                                 {x=1,y=0,z=0},
 258                                 {x=-1,y=0,z=0},
 259                                 {x=0,y=0,z=1},
 260                                 {x=0,y=0,z=-1},
 261                         }
 262                         for _, d in ipairs(tries) do
 263                                 local p = {x = pos.x+d.x, y = pos.y+d.y, z = pos.z+d.z}
 264                                 local n = minetest.env:get_node(p)
 265                                 if not minetest.registered_nodes[n.name].walkable then
 266                                         return p, true
 267                                 end
 268                         end
 269                         return pos, false
 270                 end
 271
 272                 local teleportee = nil
 273                 local p = {}
 274                 p.x, p.y, p.z = string.match(param, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
 275                 teleportee = minetest.env:get_player_by_name(name)
 276                 if teleportee and p.x and p.y and p.z then
 277                         minetest.chat_send_player(name, "Teleporting to ("..p.x..", "..p.y..", "..p.z..")")
 278                         teleportee:setpos(p)
 279                         return
 280                 end
 281
 282                 local teleportee = nil
 283                 local p = nil
 284                 local target_name = nil
 285                 target_name = string.match(param, "^([^ ]+)$")
 286                 teleportee = minetest.env:get_player_by_name(name)
 287                 if target_name then
 288                         local target = minetest.env:get_player_by_name(target_name)
 289                         if target then
 290                                 p = target:getpos()
 291                         end
 292                 end
 293                 if teleportee and p then
 294                         p = find_free_position_near(p)
 295                         minetest.chat_send_player(name, "Teleporting to "..target_name.." at ("..p.x..", "..p.y..", "..p.z..")")
 296                         teleportee:setpos(p)
 297                         return
 298                 end
 299
 300                 if minetest.check_player_privs(name, {bring=true}) then
 301                         local teleportee = nil
 302                         local p = {}
 303                         local teleportee_name = nil
 304                         teleportee_name, p.x, p.y, p.z = string.match(param, "^([^ ]+) +([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$")
 305                         if teleportee_name then
 306                                 teleportee = minetest.env:get_player_by_name(teleportee_name)
 307                         end
 308                         if teleportee and p.x and p.y and p.z then
 309                                 minetest.chat_send_player(name, "Teleporting "..teleportee_name.." to ("..p.x..", "..p.y..", "..p.z..")")
 310                                 teleportee:setpos(p)
 311                                 return
 312                         end
 313
 314                         local teleportee = nil
 315                         local p = nil
 316                         local teleportee_name = nil
 317                         local target_name = nil
 318                         teleportee_name, target_name = string.match(param, "^([^ ]+) +([^ ]+)$")
 319                         if teleportee_name then
 320                                 teleportee = minetest.env:get_player_by_name(teleportee_name)
 321                         end
 322                         if target_name then
 323                                 local target = minetest.env: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                                 minetest.chat_send_player(name, "Teleporting "..teleportee_name.." to "..target_name.." at ("..p.x..", "..p.y..", "..p.z..")")
 331                                 teleportee:setpos(p)
 332                                 return
 333                         end
 334                 end
 335
 336                 minetest.chat_send_player(name, "Invalid parameters (\""..param.."\") or player not found (see /help teleport)")
 337                 return
 338         end,
 339 })
 340
 341 minetest.register_chatcommand("set", {
 342         params = "[-n] <name> <value> | <name>",
 343         description = "set or read server configuration setting",
 344         privs = {server=true},
 345         func = function(name, param)
 346                 local arg, setname, setvalue = string.match(param, "(-[n]) ([^ ]+) (.+)")
 347                 if arg and arg == "-n" and setname and setvalue then
 348                         minetest.setting_set(setname, setvalue)
 349                         minetest.chat_send_player(name, setname.." = "..setvalue)
 350                         return
 351                 end
 352                 local setname, setvalue = string.match(param, "([^ ]+) (.+)")
 353                 if setname and setvalue then
 354                         if not minetest.setting_get(setname) then
 355                                 minetest.chat_send_player(name, "Failed. Use '/set -n <name> <value>' to create a new setting.")
 356                                 return
 357                         end
 358                         minetest.setting_set(setname, setvalue)
 359                         minetest.chat_send_player(name, setname.." = "..setvalue)
 360                         return
 361                 end
 362                 local setname = string.match(param, "([^ ]+)")
 363                 if setname then
 364                         local setvalue = minetest.setting_get(setname)
 365                         if not setvalue then
 366                                 setvalue = "<not set>"
 367                         end
 368                         minetest.chat_send_player(name, setname.." = "..setvalue)
 369                         return
 370                 end
 371                 minetest.chat_send_player(name, "Invalid parameters (see /help set)")
 372         end,
 373 })
 374
 375 minetest.register_chatcommand("mods", {
 376         params = "",
 377         description = "lists mods installed on the server",
 378         privs = {},
 379         func = function(name, param)
 380                 local response = ""
 381                 local modnames = minetest.get_modnames()
 382                 for i, mod in ipairs(modnames) do
 383                         response = response .. mod
 384                         -- Add space if not at the end
 385                         if i ~= #modnames then
 386                                 response = response .. " "
 387                         end
 388                 end
 389                 minetest.chat_send_player(name, response)
 390         end,
 391 })
 392
 393 local function handle_give_command(cmd, giver, receiver, stackstring)
 394         minetest.log("action", giver.." invoked "..cmd..', stackstring="'
 395                         ..stackstring..'"')
 396         minetest.log(cmd..' invoked, stackstring="'..stackstring..'"')
 397         local itemstack = ItemStack(stackstring)
 398         if itemstack:is_empty() then
 399                 minetest.chat_send_player(giver, 'error: cannot give an empty item')
 400                 return
 401         elseif not itemstack:is_known() then
 402                 minetest.chat_send_player(giver, 'error: cannot give an unknown item')
 403                 return
 404         end
 405         local receiverref = minetest.env:get_player_by_name(receiver)
 406         if receiverref == nil then
 407                 minetest.chat_send_player(giver, receiver..' is not a known player')
 408                 return
 409         end
 410         local leftover = receiverref:get_inventory():add_item("main", itemstack)
 411         if leftover:is_empty() then
 412                 partiality = ""
 413         elseif leftover:get_count() == itemstack:get_count() then
 414                 partiality = "could not be "
 415         else
 416                 partiality = "partially "
 417         end
 418         -- The actual item stack string may be different from what the "giver"
 419         -- entered (e.g. big numbers are always interpreted as 2^16-1).
 420         stackstring = itemstack:to_string()
 421         if giver == receiver then
 422                 minetest.chat_send_player(giver, '"'..stackstring
 423                         ..'" '..partiality..'added to inventory.');
 424         else
 425                 minetest.chat_send_player(giver, '"'..stackstring
 426                         ..'" '..partiality..'added to '..receiver..'\'s inventory.');
 427                 minetest.chat_send_player(receiver, '"'..stackstring
 428                         ..'" '..partiality..'added to inventory.');
 429         end
 430 end
 431
 432 minetest.register_chatcommand("give", {
 433         params = "<name> <itemstring>",
 434         description = "give item to player",
 435         privs = {give=true},
 436         func = function(name, param)
 437                 local toname, itemstring = string.match(param, "^([^ ]+) +(.+)$")
 438                 if not toname or not itemstring then
 439                         minetest.chat_send_player(name, "name and itemstring required")
 440                         return
 441                 end
 442                 handle_give_command("/give", name, toname, itemstring)
 443         end,
 444 })
 445 minetest.register_chatcommand("giveme", {
 446         params = "<itemstring>",
 447         description = "give item to yourself",
 448         privs = {give=true},
 449         func = function(name, param)
 450                 local itemstring = string.match(param, "(.+)$")
 451                 if not itemstring then
 452                         minetest.chat_send_player(name, "itemstring required")
 453                         return
 454                 end
 455                 handle_give_command("/giveme", name, name, itemstring)
 456         end,
 457 })
 458 minetest.register_chatcommand("spawnentity", {
 459         params = "<entityname>",
 460         description = "spawn entity at your position",
 461         privs = {give=true, interact=true},
 462         func = function(name, param)
 463                 local entityname = string.match(param, "(.+)$")
 464                 if not entityname then
 465                         minetest.chat_send_player(name, "entityname required")
 466                         return
 467                 end
 468                 print('/spawnentity invoked, entityname="'..entityname..'"')
 469                 local player = minetest.env:get_player_by_name(name)
 470                 if player == nil then
 471                         print("Unable to spawn entity, player is nil")
 472                         return true -- Handled chat message
 473                 end
 474                 local p = player:getpos()
 475                 p.y = p.y + 1
 476                 minetest.env:add_entity(p, entityname)
 477                 minetest.chat_send_player(name, '"'..entityname
 478                                 ..'" spawned.');
 479         end,
 480 })
 481 minetest.register_chatcommand("pulverize", {
 482         params = "",
 483         description = "delete item in hand",
 484         privs = {},
 485         func = function(name, param)
 486                 local player = minetest.env:get_player_by_name(name)
 487                 if player == nil then
 488                         print("Unable to pulverize, player is nil")
 489                         return true -- Handled chat message
 490                 end
 491                 if player:get_wielded_item():is_empty() then
 492                         minetest.chat_send_player(name, 'Unable to pulverize, no item in hand.')
 493                 else
 494                         player:set_wielded_item(nil)
 495                         minetest.chat_send_player(name, 'An item was pulverized.')
 496                 end
 497         end,
 498 })
 499
 500 -- Key = player name
 501 minetest.rollback_punch_callbacks = {}
 502
 503 minetest.register_on_punchnode(function(pos, node, puncher)
 504         local name = puncher:get_player_name()
 505         if minetest.rollback_punch_callbacks[name] then
 506                 minetest.rollback_punch_callbacks[name](pos, node, puncher)
 507                 minetest.rollback_punch_callbacks[name] = nil
 508         end
 509 end)
 510
 511 minetest.register_chatcommand("rollback_check", {
 512         params = "[<range>] [<seconds>]",
 513         description = "check who has last touched a node or near it, "..
 514                         "max. <seconds> ago (default range=0, seconds=86400=24h)",
 515         privs = {rollback=true},
 516         func = function(name, param)
 517                 local range, seconds = string.match(param, "(%d+) *(%d*)")
 518                 range = tonumber(range) or 0
 519                 seconds = tonumber(seconds) or 86400
 520                 minetest.chat_send_player(name, "Punch a node (limits set: range="..
 521                                 dump(range).." seconds="..dump(seconds).."s)")
 522                 minetest.rollback_punch_callbacks[name] = function(pos, node, puncher)
 523                         local name = puncher:get_player_name()
 524                         minetest.chat_send_player(name, "Checking...")
 525                         local actor, act_p, act_seconds =
 526                                         minetest.rollback_get_last_node_actor(pos, range, seconds)
 527                         if actor == "" then
 528                                 minetest.chat_send_player(name, "Nobody has touched the "..
 529                                                 "specified location in "..dump(seconds).." seconds")
 530                                 return
 531                         end
 532                         local nodedesc = "this node"
 533                         if act_p.x ~= pos.x or act_p.y ~= pos.y or act_p.z ~= pos.z then
 534                                 nodedesc = minetest.pos_to_string(act_p)
 535                         end
 536                         local nodename = minetest.env:get_node(act_p).name
 537                         minetest.chat_send_player(name, "Last actor on "..nodedesc..
 538                                         " was "..actor..", "..dump(act_seconds)..
 539                                         "s ago (node is now "..nodename..")")
 540                 end
 541         end,
 542 })
 543
 544 minetest.register_chatcommand("rollback", {
 545         params = "<player name> [<seconds>] | :<actor> [<seconds>]",
 546         description = "revert actions of a player; default for <seconds> is 60",
 547         privs = {rollback=true},
 548         func = function(name, param)
 549                 local target_name, seconds = string.match(param, ":([^ ]+) *(%d*)")
 550                 if not target_name then
 551                         local player_name = nil;
 552                         player_name, seconds = string.match(param, "([^ ]+) *(%d*)")
 553                         if not player_name then
 554                                 minetest.chat_send_player(name, "Invalid parameters. See /help rollback and /help rollback_check")
 555                                 return
 556                         end
 557                         target_name = "player:"..player_name
 558                 end
 559                 seconds = tonumber(seconds) or 60
 560                 minetest.chat_send_player(name, "Reverting actions of "..
 561                                 dump(target_name).." since "..dump(seconds).." seconds.")
 562                 local success, log = minetest.rollback_revert_actions_by(
 563                                 target_name, seconds)
 564                 if #log > 10 then
 565                         minetest.chat_send_player(name, "(log is too long to show)")
 566                 else
 567                         for _,line in ipairs(log) do
 568                                 minetest.chat_send_player(name, line)
 569                         end
 570                 end
 571                 if success then
 572                         minetest.chat_send_player(name, "Reverting actions succeeded.")
 573                 else
 574                         minetest.chat_send_player(name, "Reverting actions FAILED.")
 575                 end
 576         end,
 577 })
 578
 579 minetest.register_chatcommand("status", {
 580         params = "",
 581         description = "print server status line",
 582         privs = {},
 583         func = function(name, param)
 584                 minetest.chat_send_player(name, minetest.get_server_status())
 585         end,
 586 })
 587
 588 minetest.register_chatcommand("time", {
 589         params = "<0...24000>",
 590         description = "set time of day",
 591         privs = {settime=true},
 592         func = function(name, param)
 593                 if param == "" then
 594                         minetest.chat_send_player(name, "Missing parameter")
 595                         return
 596                 end
 597                 local newtime = tonumber(param)
 598                 if newtime == nil then
 599                         minetest.chat_send_player(name, "Invalid time")
 600                 else
 601                         minetest.env:set_timeofday((newtime % 24000) / 24000)
 602                         minetest.chat_send_player(name, "Time of day changed.")
 603                         minetest.log("action", name .. " sets time " .. newtime)
 604                 end
 605         end,
 606 })
 607
 608 minetest.register_chatcommand("shutdown", {
 609         params = "",
 610         description = "shutdown server",
 611         privs = {server=true},
 612         func = function(name, param)
 613                 minetest.log("action", name .. " shuts down server")
 614                 minetest.request_shutdown()
 615                 minetest.chat_send_all("*** Server shutting down (operator request).")
 616         end,
 617 })
 618
 619 minetest.register_chatcommand("ban", {
 620         params = "<name>",
 621         description = "ban IP of player",
 622         privs = {ban=true},
 623         func = function(name, param)
 624                 if param == "" then
 625                         minetest.chat_send_player(name, "Ban list: " .. minetest.get_ban_list())
 626                         return
 627                 end
 628                 if not minetest.env:get_player_by_name(param) then
 629                         minetest.chat_send_player(name, "No such player")
 630                         return
 631                 end
 632                 if not minetest.ban_player(param) then
 633                         minetest.chat_send_player(name, "Failed to ban player")
 634                 else
 635                         local desc = minetest.get_ban_description(param)
 636                         minetest.chat_send_player(name, "Banned " .. desc .. ".")
 637                         minetest.log("action", name .. " bans " .. desc .. ".")
 638                 end
 639         end,
 640 })
 641
 642 minetest.register_chatcommand("unban", {
 643         params = "<name/ip>",
 644         description = "remove IP ban",
 645         privs = {ban=true},
 646         func = function(name, param)
 647                 if not minetest.unban_player_or_ip(param) then
 648                         minetest.chat_send_player(name, "Failed to unban player/IP")
 649                 else
 650                         minetest.chat_send_player(name, "Unbanned " .. param)
 651                         minetest.log("action", name .. " unbans " .. param)
 652                 end
 653         end,
 654 })
 655
 656 minetest.register_chatcommand("clearobjects", {
 657         params = "",
 658         description = "clear all objects in world",
 659         privs = {server=true},
 660         func = function(name, param)
 661                 minetest.log("action", name .. " clears all objects")
 662                 minetest.chat_send_all("Clearing all objects.  This may take long.  You may experience a timeout.  (by " .. name .. ")")
 663                 minetest.env:clear_objects()
 664                 minetest.log("action", "object clearing done")
 665                 minetest.chat_send_all("*** Cleared all objects.")
 666         end,
 667 })
 668
 669 minetest.register_chatcommand("msg", {
 670         params = "<name> <message>",
 671         description = "Send a private message",
 672         privs = {shout=true},
 673         func = function(name, param)
 674                 local found, _, sendto, message = param:find("^([^%s]+)%s(.+)$")
 675                 if found then
 676                         if minetest.env:get_player_by_name(sendto) then
 677                                 minetest.log("action", "PM from "..name.." to "..sendto..": "..message)
 678                                 minetest.chat_send_player(sendto, "PM from "..name..": "..message)
 679                                 minetest.chat_send_player(name, "Message sent")
 680                         else
 681                                 minetest.chat_send_player(name, "The player "..sendto.." is not online")
 682                         end
 683                 else
 684                         minetest.chat_send_player(name, "Invalid usage, see /help msg")
 685                 end
 686         end,
 687 })