1-- Minetest: builtin/game/chat.lua 2 3-- Helper function that implements search and replace without pattern matching 4-- Returns the string and a boolean indicating whether or not the string was modified 5local function safe_gsub(s, replace, with) 6 local i1, i2 = s:find(replace, 1, true) 7 if not i1 then 8 return s, false 9 end 10 11 return s:sub(1, i1 - 1) .. with .. s:sub(i2 + 1), true 12end 13 14-- 15-- Chat message formatter 16-- 17 18-- Implemented in Lua to allow redefinition 19function core.format_chat_message(name, message) 20 local error_str = "Invalid chat message format - missing %s" 21 local str = core.settings:get("chat_message_format") 22 local replaced 23 24 -- Name 25 str, replaced = safe_gsub(str, "@name", name) 26 if not replaced then 27 error(error_str:format("@name"), 2) 28 end 29 30 -- Timestamp 31 str = safe_gsub(str, "@timestamp", os.date("%H:%M:%S", os.time())) 32 33 -- Insert the message into the string only after finishing all other processing 34 str, replaced = safe_gsub(str, "@message", message) 35 if not replaced then 36 error(error_str:format("@message"), 2) 37 end 38 39 return str 40end 41 42-- 43-- Chat command handler 44-- 45 46core.chatcommands = core.registered_chatcommands -- BACKWARDS COMPATIBILITY 47 48core.register_on_chat_message(function(name, message) 49 if message:sub(1,1) ~= "/" then 50 return 51 end 52 53 local cmd, param = string.match(message, "^/([^ ]+) *(.*)") 54 if not cmd then 55 core.chat_send_player(name, "-!- Empty command") 56 return true 57 end 58 59 param = param or "" 60 61 -- Run core.registered_on_chatcommands callbacks. 62 if core.run_callbacks(core.registered_on_chatcommands, 5, name, cmd, param) then 63 return true 64 end 65 66 local cmd_def = core.registered_chatcommands[cmd] 67 if not cmd_def then 68 core.chat_send_player(name, "-!- Invalid command: " .. cmd) 69 return true 70 end 71 local has_privs, missing_privs = core.check_player_privs(name, cmd_def.privs) 72 if has_privs then 73 core.set_last_run_mod(cmd_def.mod_origin) 74 local success, result = cmd_def.func(name, param) 75 if success == false and result == nil then 76 core.chat_send_player(name, "-!- Invalid command usage") 77 local help_def = core.registered_chatcommands["help"] 78 if help_def then 79 local _, helpmsg = help_def.func(name, cmd) 80 if helpmsg then 81 core.chat_send_player(name, helpmsg) 82 end 83 end 84 elseif result then 85 core.chat_send_player(name, result) 86 end 87 else 88 core.chat_send_player(name, "You don't have permission" 89 .. " to run this command (missing privileges: " 90 .. table.concat(missing_privs, ", ") .. ")") 91 end 92 return true -- Handled chat message 93end) 94 95if core.settings:get_bool("profiler.load") then 96 -- Run after register_chatcommand and its register_on_chat_message 97 -- Before any chatcommands that should be profiled 98 profiler.init_chatcommand() 99end 100 101-- Parses a "range" string in the format of "here (number)" or 102-- "(x1, y1, z1) (x2, y2, z2)", returning two position vectors 103local function parse_range_str(player_name, str) 104 local p1, p2 105 local args = str:split(" ") 106 107 if args[1] == "here" then 108 p1, p2 = core.get_player_radius_area(player_name, tonumber(args[2])) 109 if p1 == nil then 110 return false, "Unable to get player " .. player_name .. " position" 111 end 112 else 113 p1, p2 = core.string_to_area(str) 114 if p1 == nil then 115 return false, "Incorrect area format. Expected: (x1,y1,z1) (x2,y2,z2)" 116 end 117 end 118 119 return p1, p2 120end 121 122-- 123-- Chat commands 124-- 125core.register_chatcommand("me", { 126 params = "<action>", 127 description = "Show chat action (e.g., '/me orders a pizza' displays" 128 .. " '<player name> orders a pizza')", 129 privs = {shout=true}, 130 func = function(name, param) 131 core.chat_send_all("* " .. name .. " " .. param) 132 return true 133 end, 134}) 135 136core.register_chatcommand("admin", { 137 description = "Show the name of the server owner", 138 func = function(name) 139 local admin = core.settings:get("name") 140 if admin then 141 return true, "The administrator of this server is " .. admin .. "." 142 else 143 return false, "There's no administrator named in the config file." 144 end 145 end, 146}) 147 148core.register_chatcommand("privs", { 149 params = "[<name>]", 150 description = "Show privileges of yourself or another player", 151 func = function(caller, param) 152 param = param:trim() 153 local name = (param ~= "" and param or caller) 154 if not core.player_exists(name) then 155 return false, "Player " .. name .. " does not exist." 156 end 157 return true, "Privileges of " .. name .. ": " 158 .. core.privs_to_string( 159 core.get_player_privs(name), ", ") 160 end, 161}) 162 163core.register_chatcommand("haspriv", { 164 params = "<privilege>", 165 description = "Return list of all online players with privilege.", 166 privs = {basic_privs = true}, 167 func = function(caller, param) 168 param = param:trim() 169 if param == "" then 170 return false, "Invalid parameters (see /help haspriv)" 171 end 172 if not core.registered_privileges[param] then 173 return false, "Unknown privilege!" 174 end 175 local privs = core.string_to_privs(param) 176 local players_with_priv = {} 177 for _, player in pairs(core.get_connected_players()) do 178 local player_name = player:get_player_name() 179 if core.check_player_privs(player_name, privs) then 180 table.insert(players_with_priv, player_name) 181 end 182 end 183 return true, "Players online with the \"" .. param .. "\" privilege: " .. 184 table.concat(players_with_priv, ", ") 185 end 186}) 187 188local function handle_grant_command(caller, grantname, grantprivstr) 189 local caller_privs = core.get_player_privs(caller) 190 if not (caller_privs.privs or caller_privs.basic_privs) then 191 return false, "Your privileges are insufficient." 192 end 193 194 if not core.get_auth_handler().get_auth(grantname) then 195 return false, "Player " .. grantname .. " does not exist." 196 end 197 local grantprivs = core.string_to_privs(grantprivstr) 198 if grantprivstr == "all" then 199 grantprivs = core.registered_privileges 200 end 201 local privs = core.get_player_privs(grantname) 202 local privs_unknown = "" 203 local basic_privs = 204 core.string_to_privs(core.settings:get("basic_privs") or "interact,shout") 205 for priv, _ in pairs(grantprivs) do 206 if not basic_privs[priv] and not caller_privs.privs then 207 return false, "Your privileges are insufficient." 208 end 209 if not core.registered_privileges[priv] then 210 privs_unknown = privs_unknown .. "Unknown privilege: " .. priv .. "\n" 211 end 212 privs[priv] = true 213 end 214 if privs_unknown ~= "" then 215 return false, privs_unknown 216 end 217 for priv, _ in pairs(grantprivs) do 218 -- call the on_grant callbacks 219 core.run_priv_callbacks(grantname, priv, caller, "grant") 220 end 221 core.set_player_privs(grantname, privs) 222 core.log("action", caller..' granted ('..core.privs_to_string(grantprivs, ', ')..') privileges to '..grantname) 223 if grantname ~= caller then 224 core.chat_send_player(grantname, caller 225 .. " granted you privileges: " 226 .. core.privs_to_string(grantprivs, ' ')) 227 end 228 return true, "Privileges of " .. grantname .. ": " 229 .. core.privs_to_string( 230 core.get_player_privs(grantname), ' ') 231end 232 233core.register_chatcommand("grant", { 234 params = "<name> (<privilege> | all)", 235 description = "Give privileges to player", 236 func = function(name, param) 237 local grantname, grantprivstr = string.match(param, "([^ ]+) (.+)") 238 if not grantname or not grantprivstr then 239 return false, "Invalid parameters (see /help grant)" 240 end 241 return handle_grant_command(name, grantname, grantprivstr) 242 end, 243}) 244 245core.register_chatcommand("grantme", { 246 params = "<privilege> | all", 247 description = "Grant privileges to yourself", 248 func = function(name, param) 249 if param == "" then 250 return false, "Invalid parameters (see /help grantme)" 251 end 252 return handle_grant_command(name, name, param) 253 end, 254}) 255 256local function handle_revoke_command(caller, revokename, revokeprivstr) 257 local caller_privs = core.get_player_privs(caller) 258 if not (caller_privs.privs or caller_privs.basic_privs) then 259 return false, "Your privileges are insufficient." 260 end 261 262 if not core.get_auth_handler().get_auth(revokename) then 263 return false, "Player " .. revokename .. " does not exist." 264 end 265 266 local revokeprivs = core.string_to_privs(revokeprivstr) 267 local privs = core.get_player_privs(revokename) 268 local basic_privs = 269 core.string_to_privs(core.settings:get("basic_privs") or "interact,shout") 270 for priv, _ in pairs(revokeprivs) do 271 if not basic_privs[priv] and not caller_privs.privs then 272 return false, "Your privileges are insufficient." 273 end 274 end 275 276 if revokeprivstr == "all" then 277 revokeprivs = privs 278 privs = {} 279 else 280 for priv, _ in pairs(revokeprivs) do 281 privs[priv] = nil 282 end 283 end 284 285 for priv, _ in pairs(revokeprivs) do 286 -- call the on_revoke callbacks 287 core.run_priv_callbacks(revokename, priv, caller, "revoke") 288 end 289 290 core.set_player_privs(revokename, privs) 291 core.log("action", caller..' revoked (' 292 ..core.privs_to_string(revokeprivs, ', ') 293 ..') privileges from '..revokename) 294 if revokename ~= caller then 295 core.chat_send_player(revokename, caller 296 .. " revoked privileges from you: " 297 .. core.privs_to_string(revokeprivs, ' ')) 298 end 299 return true, "Privileges of " .. revokename .. ": " 300 .. core.privs_to_string( 301 core.get_player_privs(revokename), ' ') 302end 303 304core.register_chatcommand("revoke", { 305 params = "<name> (<privilege> | all)", 306 description = "Remove privileges from player", 307 privs = {}, 308 func = function(name, param) 309 local revokename, revokeprivstr = string.match(param, "([^ ]+) (.+)") 310 if not revokename or not revokeprivstr then 311 return false, "Invalid parameters (see /help revoke)" 312 end 313 return handle_revoke_command(name, revokename, revokeprivstr) 314 end, 315}) 316 317core.register_chatcommand("revokeme", { 318 params = "<privilege> | all", 319 description = "Revoke privileges from yourself", 320 privs = {}, 321 func = function(name, param) 322 if param == "" then 323 return false, "Invalid parameters (see /help revokeme)" 324 end 325 return handle_revoke_command(name, name, param) 326 end, 327}) 328 329core.register_chatcommand("setpassword", { 330 params = "<name> <password>", 331 description = "Set player's password", 332 privs = {password=true}, 333 func = function(name, param) 334 local toname, raw_password = string.match(param, "^([^ ]+) +(.+)$") 335 if not toname then 336 toname = param:match("^([^ ]+) *$") 337 raw_password = nil 338 end 339 340 if not toname then 341 return false, "Name field required" 342 end 343 344 local act_str_past, act_str_pres 345 if not raw_password then 346 core.set_player_password(toname, "") 347 act_str_past = "cleared" 348 act_str_pres = "clears" 349 else 350 core.set_player_password(toname, 351 core.get_password_hash(toname, 352 raw_password)) 353 act_str_past = "set" 354 act_str_pres = "sets" 355 end 356 357 if toname ~= name then 358 core.chat_send_player(toname, "Your password was " 359 .. act_str_past .. " by " .. name) 360 end 361 362 core.log("action", name .. " " .. act_str_pres .. 363 " password of " .. toname .. ".") 364 365 return true, "Password of player \"" .. toname .. "\" " .. act_str_past 366 end, 367}) 368 369core.register_chatcommand("clearpassword", { 370 params = "<name>", 371 description = "Set empty password for a player", 372 privs = {password=true}, 373 func = function(name, param) 374 local toname = param 375 if toname == "" then 376 return false, "Name field required" 377 end 378 core.set_player_password(toname, '') 379 380 core.log("action", name .. " clears password of " .. toname .. ".") 381 382 return true, "Password of player \"" .. toname .. "\" cleared" 383 end, 384}) 385 386core.register_chatcommand("auth_reload", { 387 params = "", 388 description = "Reload authentication data", 389 privs = {server=true}, 390 func = function(name, param) 391 local done = core.auth_reload() 392 return done, (done and "Done." or "Failed.") 393 end, 394}) 395 396core.register_chatcommand("remove_player", { 397 params = "<name>", 398 description = "Remove a player's data", 399 privs = {server=true}, 400 func = function(name, param) 401 local toname = param 402 if toname == "" then 403 return false, "Name field required" 404 end 405 406 local rc = core.remove_player(toname) 407 408 if rc == 0 then 409 core.log("action", name .. " removed player data of " .. toname .. ".") 410 return true, "Player \"" .. toname .. "\" removed." 411 elseif rc == 1 then 412 return true, "No such player \"" .. toname .. "\" to remove." 413 elseif rc == 2 then 414 return true, "Player \"" .. toname .. "\" is connected, cannot remove." 415 end 416 417 return false, "Unhandled remove_player return code " .. rc .. "" 418 end, 419}) 420 421core.register_chatcommand("teleport", { 422 params = "<X>,<Y>,<Z> | <to_name> | (<name> <X>,<Y>,<Z>) | (<name> <to_name>)", 423 description = "Teleport to position or player", 424 privs = {teleport=true}, 425 func = function(name, param) 426 -- Returns (pos, true) if found, otherwise (pos, false) 427 local function find_free_position_near(pos) 428 local tries = { 429 {x=1,y=0,z=0}, 430 {x=-1,y=0,z=0}, 431 {x=0,y=0,z=1}, 432 {x=0,y=0,z=-1}, 433 } 434 for _, d in ipairs(tries) do 435 local p = {x = pos.x+d.x, y = pos.y+d.y, z = pos.z+d.z} 436 local n = core.get_node_or_nil(p) 437 if n and n.name then 438 local def = core.registered_nodes[n.name] 439 if def and not def.walkable then 440 return p, true 441 end 442 end 443 end 444 return pos, false 445 end 446 447 local p = {} 448 p.x, p.y, p.z = string.match(param, "^([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$") 449 p.x = tonumber(p.x) 450 p.y = tonumber(p.y) 451 p.z = tonumber(p.z) 452 if p.x and p.y and p.z then 453 454 local lm = 31000 455 if p.x < -lm or p.x > lm or p.y < -lm or p.y > lm or p.z < -lm or p.z > lm then 456 return false, "Cannot teleport out of map bounds!" 457 end 458 local teleportee = core.get_player_by_name(name) 459 if teleportee then 460 if teleportee:get_attach() then 461 return false, "Can't teleport, you're attached to an object!" 462 end 463 teleportee:set_pos(p) 464 return true, "Teleporting to "..core.pos_to_string(p) 465 end 466 end 467 468 local target_name = param:match("^([^ ]+)$") 469 local teleportee = core.get_player_by_name(name) 470 471 p = nil 472 if target_name then 473 local target = core.get_player_by_name(target_name) 474 if target then 475 p = target:get_pos() 476 end 477 end 478 479 if teleportee and p then 480 if teleportee:get_attach() then 481 return false, "Can't teleport, you're attached to an object!" 482 end 483 p = find_free_position_near(p) 484 teleportee:set_pos(p) 485 return true, "Teleporting to " .. target_name 486 .. " at "..core.pos_to_string(p) 487 end 488 489 if not core.check_player_privs(name, {bring=true}) then 490 return false, "You don't have permission to teleport other players (missing bring privilege)" 491 end 492 493 teleportee = nil 494 p = {} 495 local teleportee_name 496 teleportee_name, p.x, p.y, p.z = param:match( 497 "^([^ ]+) +([%d.-]+)[, ] *([%d.-]+)[, ] *([%d.-]+)$") 498 p.x, p.y, p.z = tonumber(p.x), tonumber(p.y), tonumber(p.z) 499 if teleportee_name then 500 teleportee = core.get_player_by_name(teleportee_name) 501 end 502 if teleportee and p.x and p.y and p.z then 503 if teleportee:get_attach() then 504 return false, "Can't teleport, player is attached to an object!" 505 end 506 teleportee:set_pos(p) 507 return true, "Teleporting " .. teleportee_name 508 .. " to " .. core.pos_to_string(p) 509 end 510 511 teleportee = nil 512 p = nil 513 teleportee_name, target_name = string.match(param, "^([^ ]+) +([^ ]+)$") 514 if teleportee_name then 515 teleportee = core.get_player_by_name(teleportee_name) 516 end 517 if target_name then 518 local target = core.get_player_by_name(target_name) 519 if target then 520 p = target:get_pos() 521 end 522 end 523 if teleportee and p then 524 if teleportee:get_attach() then 525 return false, "Can't teleport, player is attached to an object!" 526 end 527 p = find_free_position_near(p) 528 teleportee:set_pos(p) 529 return true, "Teleporting " .. teleportee_name 530 .. " to " .. target_name 531 .. " at " .. core.pos_to_string(p) 532 end 533 534 return false, 'Invalid parameters ("' .. param 535 .. '") or player not found (see /help teleport)' 536 end, 537}) 538 539core.register_chatcommand("set", { 540 params = "([-n] <name> <value>) | <name>", 541 description = "Set or read server configuration setting", 542 privs = {server=true}, 543 func = function(name, param) 544 local arg, setname, setvalue = string.match(param, "(-[n]) ([^ ]+) (.+)") 545 if arg and arg == "-n" and setname and setvalue then 546 core.settings:set(setname, setvalue) 547 return true, setname .. " = " .. setvalue 548 end 549 550 setname, setvalue = string.match(param, "([^ ]+) (.+)") 551 if setname and setvalue then 552 if not core.settings:get(setname) then 553 return false, "Failed. Use '/set -n <name> <value>' to create a new setting." 554 end 555 core.settings:set(setname, setvalue) 556 return true, setname .. " = " .. setvalue 557 end 558 559 setname = string.match(param, "([^ ]+)") 560 if setname then 561 setvalue = core.settings:get(setname) 562 if not setvalue then 563 setvalue = "<not set>" 564 end 565 return true, setname .. " = " .. setvalue 566 end 567 568 return false, "Invalid parameters (see /help set)." 569 end, 570}) 571 572local function emergeblocks_callback(pos, action, num_calls_remaining, ctx) 573 if ctx.total_blocks == 0 then 574 ctx.total_blocks = num_calls_remaining + 1 575 ctx.current_blocks = 0 576 end 577 ctx.current_blocks = ctx.current_blocks + 1 578 579 if ctx.current_blocks == ctx.total_blocks then 580 core.chat_send_player(ctx.requestor_name, 581 string.format("Finished emerging %d blocks in %.2fms.", 582 ctx.total_blocks, (os.clock() - ctx.start_time) * 1000)) 583 end 584end 585 586local function emergeblocks_progress_update(ctx) 587 if ctx.current_blocks ~= ctx.total_blocks then 588 core.chat_send_player(ctx.requestor_name, 589 string.format("emergeblocks update: %d/%d blocks emerged (%.1f%%)", 590 ctx.current_blocks, ctx.total_blocks, 591 (ctx.current_blocks / ctx.total_blocks) * 100)) 592 593 core.after(2, emergeblocks_progress_update, ctx) 594 end 595end 596 597core.register_chatcommand("emergeblocks", { 598 params = "(here [<radius>]) | (<pos1> <pos2>)", 599 description = "Load (or, if nonexistent, generate) map blocks " 600 .. "contained in area pos1 to pos2 (<pos1> and <pos2> must be in parentheses)", 601 privs = {server=true}, 602 func = function(name, param) 603 local p1, p2 = parse_range_str(name, param) 604 if p1 == false then 605 return false, p2 606 end 607 608 local context = { 609 current_blocks = 0, 610 total_blocks = 0, 611 start_time = os.clock(), 612 requestor_name = name 613 } 614 615 core.emerge_area(p1, p2, emergeblocks_callback, context) 616 core.after(2, emergeblocks_progress_update, context) 617 618 return true, "Started emerge of area ranging from " .. 619 core.pos_to_string(p1, 1) .. " to " .. core.pos_to_string(p2, 1) 620 end, 621}) 622 623core.register_chatcommand("deleteblocks", { 624 params = "(here [<radius>]) | (<pos1> <pos2>)", 625 description = "Delete map blocks contained in area pos1 to pos2 " 626 .. "(<pos1> and <pos2> must be in parentheses)", 627 privs = {server=true}, 628 func = function(name, param) 629 local p1, p2 = parse_range_str(name, param) 630 if p1 == false then 631 return false, p2 632 end 633 634 if core.delete_area(p1, p2) then 635 return true, "Successfully cleared area ranging from " .. 636 core.pos_to_string(p1, 1) .. " to " .. core.pos_to_string(p2, 1) 637 else 638 return false, "Failed to clear one or more blocks in area" 639 end 640 end, 641}) 642 643core.register_chatcommand("fixlight", { 644 params = "(here [<radius>]) | (<pos1> <pos2>)", 645 description = "Resets lighting in the area between pos1 and pos2 " 646 .. "(<pos1> and <pos2> must be in parentheses)", 647 privs = {server = true}, 648 func = function(name, param) 649 local p1, p2 = parse_range_str(name, param) 650 if p1 == false then 651 return false, p2 652 end 653 654 if core.fix_light(p1, p2) then 655 return true, "Successfully reset light in the area ranging from " .. 656 core.pos_to_string(p1, 1) .. " to " .. core.pos_to_string(p2, 1) 657 else 658 return false, "Failed to load one or more blocks in area" 659 end 660 end, 661}) 662 663core.register_chatcommand("mods", { 664 params = "", 665 description = "List mods installed on the server", 666 privs = {}, 667 func = function(name, param) 668 return true, table.concat(core.get_modnames(), ", ") 669 end, 670}) 671 672local function handle_give_command(cmd, giver, receiver, stackstring) 673 core.log("action", giver .. " invoked " .. cmd 674 .. ', stackstring="' .. stackstring .. '"') 675 local itemstack = ItemStack(stackstring) 676 if itemstack:is_empty() then 677 return false, "Cannot give an empty item" 678 elseif (not itemstack:is_known()) or (itemstack:get_name() == "unknown") then 679 return false, "Cannot give an unknown item" 680 -- Forbid giving 'ignore' due to unwanted side effects 681 elseif itemstack:get_name() == "ignore" then 682 return false, "Giving 'ignore' is not allowed" 683 end 684 local receiverref = core.get_player_by_name(receiver) 685 if receiverref == nil then 686 return false, receiver .. " is not a known player" 687 end 688 local leftover = receiverref:get_inventory():add_item("main", itemstack) 689 local partiality 690 if leftover:is_empty() then 691 partiality = "" 692 elseif leftover:get_count() == itemstack:get_count() then 693 partiality = "could not be " 694 else 695 partiality = "partially " 696 end 697 -- The actual item stack string may be different from what the "giver" 698 -- entered (e.g. big numbers are always interpreted as 2^16-1). 699 stackstring = itemstack:to_string() 700 if giver == receiver then 701 local msg = "%q %sadded to inventory." 702 return true, msg:format(stackstring, partiality) 703 else 704 core.chat_send_player(receiver, ("%q %sadded to inventory.") 705 :format(stackstring, partiality)) 706 local msg = "%q %sadded to %s's inventory." 707 return true, msg:format(stackstring, partiality, receiver) 708 end 709end 710 711core.register_chatcommand("give", { 712 params = "<name> <ItemString> [<count> [<wear>]]", 713 description = "Give item to player", 714 privs = {give=true}, 715 func = function(name, param) 716 local toname, itemstring = string.match(param, "^([^ ]+) +(.+)$") 717 if not toname or not itemstring then 718 return false, "Name and ItemString required" 719 end 720 return handle_give_command("/give", name, toname, itemstring) 721 end, 722}) 723 724core.register_chatcommand("giveme", { 725 params = "<ItemString> [<count> [<wear>]]", 726 description = "Give item to yourself", 727 privs = {give=true}, 728 func = function(name, param) 729 local itemstring = string.match(param, "(.+)$") 730 if not itemstring then 731 return false, "ItemString required" 732 end 733 return handle_give_command("/giveme", name, name, itemstring) 734 end, 735}) 736 737core.register_chatcommand("spawnentity", { 738 params = "<EntityName> [<X>,<Y>,<Z>]", 739 description = "Spawn entity at given (or your) position", 740 privs = {give=true, interact=true}, 741 func = function(name, param) 742 local entityname, p = string.match(param, "^([^ ]+) *(.*)$") 743 if not entityname then 744 return false, "EntityName required" 745 end 746 core.log("action", ("%s invokes /spawnentity, entityname=%q") 747 :format(name, entityname)) 748 local player = core.get_player_by_name(name) 749 if player == nil then 750 core.log("error", "Unable to spawn entity, player is nil") 751 return false, "Unable to spawn entity, player is nil" 752 end 753 if not core.registered_entities[entityname] then 754 return false, "Cannot spawn an unknown entity" 755 end 756 if p == "" then 757 p = player:get_pos() 758 else 759 p = core.string_to_pos(p) 760 if p == nil then 761 return false, "Invalid parameters ('" .. param .. "')" 762 end 763 end 764 p.y = p.y + 1 765 local obj = core.add_entity(p, entityname) 766 local msg = obj and "%q spawned." or "%q failed to spawn." 767 return true, msg:format(entityname) 768 end, 769}) 770 771core.register_chatcommand("pulverize", { 772 params = "", 773 description = "Destroy item in hand", 774 func = function(name, param) 775 local player = core.get_player_by_name(name) 776 if not player then 777 core.log("error", "Unable to pulverize, no player.") 778 return false, "Unable to pulverize, no player." 779 end 780 local wielded_item = player:get_wielded_item() 781 if wielded_item:is_empty() then 782 return false, "Unable to pulverize, no item in hand." 783 end 784 core.log("action", name .. " pulverized \"" .. 785 wielded_item:get_name() .. " " .. wielded_item:get_count() .. "\"") 786 player:set_wielded_item(nil) 787 return true, "An item was pulverized." 788 end, 789}) 790 791-- Key = player name 792core.rollback_punch_callbacks = {} 793 794core.register_on_punchnode(function(pos, node, puncher) 795 local name = puncher and puncher:get_player_name() 796 if name and core.rollback_punch_callbacks[name] then 797 core.rollback_punch_callbacks[name](pos, node, puncher) 798 core.rollback_punch_callbacks[name] = nil 799 end 800end) 801 802core.register_chatcommand("rollback_check", { 803 params = "[<range>] [<seconds>] [<limit>]", 804 description = "Check who last touched a node or a node near it" 805 .. " within the time specified by <seconds>. Default: range = 0," 806 .. " seconds = 86400 = 24h, limit = 5. Set <seconds> to inf for no time limit", 807 privs = {rollback=true}, 808 func = function(name, param) 809 if not core.settings:get_bool("enable_rollback_recording") then 810 return false, "Rollback functions are disabled." 811 end 812 local range, seconds, limit = 813 param:match("(%d+) *(%d*) *(%d*)") 814 range = tonumber(range) or 0 815 seconds = tonumber(seconds) or 86400 816 limit = tonumber(limit) or 5 817 if limit > 100 then 818 return false, "That limit is too high!" 819 end 820 821 core.rollback_punch_callbacks[name] = function(pos, node, puncher) 822 local name = puncher:get_player_name() 823 core.chat_send_player(name, "Checking " .. core.pos_to_string(pos) .. "...") 824 local actions = core.rollback_get_node_actions(pos, range, seconds, limit) 825 if not actions then 826 core.chat_send_player(name, "Rollback functions are disabled") 827 return 828 end 829 local num_actions = #actions 830 if num_actions == 0 then 831 core.chat_send_player(name, "Nobody has touched" 832 .. " the specified location in " 833 .. seconds .. " seconds") 834 return 835 end 836 local time = os.time() 837 for i = num_actions, 1, -1 do 838 local action = actions[i] 839 core.chat_send_player(name, 840 ("%s %s %s -> %s %d seconds ago.") 841 :format( 842 core.pos_to_string(action.pos), 843 action.actor, 844 action.oldnode.name, 845 action.newnode.name, 846 time - action.time)) 847 end 848 end 849 850 return true, "Punch a node (range=" .. range .. ", seconds=" 851 .. seconds .. "s, limit=" .. limit .. ")" 852 end, 853}) 854 855core.register_chatcommand("rollback", { 856 params = "(<name> [<seconds>]) | (:<actor> [<seconds>])", 857 description = "Revert actions of a player. Default for <seconds> is 60. Set <seconds> to inf for no time limit", 858 privs = {rollback=true}, 859 func = function(name, param) 860 if not core.settings:get_bool("enable_rollback_recording") then 861 return false, "Rollback functions are disabled." 862 end 863 local target_name, seconds = string.match(param, ":([^ ]+) *(%d*)") 864 if not target_name then 865 local player_name 866 player_name, seconds = string.match(param, "([^ ]+) *(%d*)") 867 if not player_name then 868 return false, "Invalid parameters. See /help rollback" 869 .. " and /help rollback_check." 870 end 871 target_name = "player:"..player_name 872 end 873 seconds = tonumber(seconds) or 60 874 core.chat_send_player(name, "Reverting actions of " 875 .. target_name .. " since " 876 .. seconds .. " seconds.") 877 local success, log = core.rollback_revert_actions_by( 878 target_name, seconds) 879 local response = "" 880 if #log > 100 then 881 response = "(log is too long to show)\n" 882 else 883 for _, line in pairs(log) do 884 response = response .. line .. "\n" 885 end 886 end 887 response = response .. "Reverting actions " 888 .. (success and "succeeded." or "FAILED.") 889 return success, response 890 end, 891}) 892 893core.register_chatcommand("status", { 894 description = "Show server status", 895 func = function(name, param) 896 local status = core.get_server_status(name, false) 897 if status and status ~= "" then 898 return true, status 899 end 900 return false, "This command was disabled by a mod or game" 901 end, 902}) 903 904core.register_chatcommand("time", { 905 params = "[<0..23>:<0..59> | <0..24000>]", 906 description = "Show or set time of day", 907 privs = {}, 908 func = function(name, param) 909 if param == "" then 910 local current_time = math.floor(core.get_timeofday() * 1440) 911 local minutes = current_time % 60 912 local hour = (current_time - minutes) / 60 913 return true, ("Current time is %d:%02d"):format(hour, minutes) 914 end 915 local player_privs = core.get_player_privs(name) 916 if not player_privs.settime then 917 return false, "You don't have permission to run this command " .. 918 "(missing privilege: settime)." 919 end 920 local hour, minute = param:match("^(%d+):(%d+)$") 921 if not hour then 922 local new_time = tonumber(param) 923 if not new_time then 924 return false, "Invalid time." 925 end 926 -- Backward compatibility. 927 core.set_timeofday((new_time % 24000) / 24000) 928 core.log("action", name .. " sets time to " .. new_time) 929 return true, "Time of day changed." 930 end 931 hour = tonumber(hour) 932 minute = tonumber(minute) 933 if hour < 0 or hour > 23 then 934 return false, "Invalid hour (must be between 0 and 23 inclusive)." 935 elseif minute < 0 or minute > 59 then 936 return false, "Invalid minute (must be between 0 and 59 inclusive)." 937 end 938 core.set_timeofday((hour * 60 + minute) / 1440) 939 core.log("action", ("%s sets time to %d:%02d"):format(name, hour, minute)) 940 return true, "Time of day changed." 941 end, 942}) 943 944core.register_chatcommand("days", { 945 description = "Show day count since world creation", 946 func = function(name, param) 947 return true, "Current day is " .. core.get_day_count() 948 end 949}) 950 951core.register_chatcommand("shutdown", { 952 params = "[<delay_in_seconds> | -1] [reconnect] [<message>]", 953 description = "Shutdown server (-1 cancels a delayed shutdown)", 954 privs = {server=true}, 955 func = function(name, param) 956 local delay, reconnect, message 957 delay, param = param:match("^%s*(%S+)(.*)") 958 if param then 959 reconnect, param = param:match("^%s*(%S+)(.*)") 960 end 961 message = param and param:match("^%s*(.+)") or "" 962 delay = tonumber(delay) or 0 963 964 if delay == 0 then 965 core.log("action", name .. " shuts down server") 966 core.chat_send_all("*** Server shutting down (operator request).") 967 end 968 core.request_shutdown(message:trim(), core.is_yes(reconnect), delay) 969 return true 970 end, 971}) 972 973core.register_chatcommand("ban", { 974 params = "[<name>]", 975 description = "Ban the IP of a player or show the ban list", 976 privs = {ban=true}, 977 func = function(name, param) 978 if param == "" then 979 local ban_list = core.get_ban_list() 980 if ban_list == "" then 981 return true, "The ban list is empty." 982 else 983 return true, "Ban list: " .. ban_list 984 end 985 end 986 if not core.get_player_by_name(param) then 987 return false, "Player is not online." 988 end 989 if not core.ban_player(param) then 990 return false, "Failed to ban player." 991 end 992 local desc = core.get_ban_description(param) 993 core.log("action", name .. " bans " .. desc .. ".") 994 return true, "Banned " .. desc .. "." 995 end, 996}) 997 998core.register_chatcommand("unban", { 999 params = "<name> | <IP_address>", 1000 description = "Remove IP ban belonging to a player/IP", 1001 privs = {ban=true}, 1002 func = function(name, param) 1003 if not core.unban_player_or_ip(param) then 1004 return false, "Failed to unban player/IP." 1005 end 1006 core.log("action", name .. " unbans " .. param) 1007 return true, "Unbanned " .. param 1008 end, 1009}) 1010 1011core.register_chatcommand("kick", { 1012 params = "<name> [<reason>]", 1013 description = "Kick a player", 1014 privs = {kick=true}, 1015 func = function(name, param) 1016 local tokick, reason = param:match("([^ ]+) (.+)") 1017 tokick = tokick or param 1018 if not core.kick_player(tokick, reason) then 1019 return false, "Failed to kick player " .. tokick 1020 end 1021 local log_reason = "" 1022 if reason then 1023 log_reason = " with reason \"" .. reason .. "\"" 1024 end 1025 core.log("action", name .. " kicks " .. tokick .. log_reason) 1026 return true, "Kicked " .. tokick 1027 end, 1028}) 1029 1030core.register_chatcommand("clearobjects", { 1031 params = "[full | quick]", 1032 description = "Clear all objects in world", 1033 privs = {server=true}, 1034 func = function(name, param) 1035 local options = {} 1036 if param == "" or param == "quick" then 1037 options.mode = "quick" 1038 elseif param == "full" then 1039 options.mode = "full" 1040 else 1041 return false, "Invalid usage, see /help clearobjects." 1042 end 1043 1044 core.log("action", name .. " clears all objects (" 1045 .. options.mode .. " mode).") 1046 core.chat_send_all("Clearing all objects. This may take a long time." 1047 .. " You may experience a timeout. (by " 1048 .. name .. ")") 1049 core.clear_objects(options) 1050 core.log("action", "Object clearing done.") 1051 core.chat_send_all("*** Cleared all objects.") 1052 return true 1053 end, 1054}) 1055 1056core.register_chatcommand("msg", { 1057 params = "<name> <message>", 1058 description = "Send a direct message to a player", 1059 privs = {shout=true}, 1060 func = function(name, param) 1061 local sendto, message = param:match("^(%S+)%s(.+)$") 1062 if not sendto then 1063 return false, "Invalid usage, see /help msg." 1064 end 1065 if not core.get_player_by_name(sendto) then 1066 return false, "The player " .. sendto 1067 .. " is not online." 1068 end 1069 core.log("action", "DM from " .. name .. " to " .. sendto 1070 .. ": " .. message) 1071 core.chat_send_player(sendto, "DM from " .. name .. ": " 1072 .. message) 1073 return true, "Message sent." 1074 end, 1075}) 1076 1077core.register_chatcommand("last-login", { 1078 params = "[<name>]", 1079 description = "Get the last login time of a player or yourself", 1080 func = function(name, param) 1081 if param == "" then 1082 param = name 1083 end 1084 local pauth = core.get_auth_handler().get_auth(param) 1085 if pauth and pauth.last_login and pauth.last_login ~= -1 then 1086 -- Time in UTC, ISO 8601 format 1087 return true, param.."'s last login time was " .. 1088 os.date("!%Y-%m-%dT%H:%M:%SZ", pauth.last_login) 1089 end 1090 return false, param.."'s last login time is unknown" 1091 end, 1092}) 1093 1094core.register_chatcommand("clearinv", { 1095 params = "[<name>]", 1096 description = "Clear the inventory of yourself or another player", 1097 func = function(name, param) 1098 local player 1099 if param and param ~= "" and param ~= name then 1100 if not core.check_player_privs(name, {server=true}) then 1101 return false, "You don't have permission" 1102 .. " to clear another player's inventory (missing privilege: server)" 1103 end 1104 player = core.get_player_by_name(param) 1105 core.chat_send_player(param, name.." cleared your inventory.") 1106 else 1107 player = core.get_player_by_name(name) 1108 end 1109 1110 if player then 1111 player:get_inventory():set_list("main", {}) 1112 player:get_inventory():set_list("craft", {}) 1113 player:get_inventory():set_list("craftpreview", {}) 1114 core.log("action", name.." clears "..player:get_player_name().."'s inventory") 1115 return true, "Cleared "..player:get_player_name().."'s inventory." 1116 else 1117 return false, "Player must be online to clear inventory!" 1118 end 1119 end, 1120}) 1121 1122local function handle_kill_command(killer, victim) 1123 if core.settings:get_bool("enable_damage") == false then 1124 return false, "Players can't be killed, damage has been disabled." 1125 end 1126 local victimref = core.get_player_by_name(victim) 1127 if victimref == nil then 1128 return false, string.format("Player %s is not online.", victim) 1129 elseif victimref:get_hp() <= 0 then 1130 if killer == victim then 1131 return false, "You are already dead." 1132 else 1133 return false, string.format("%s is already dead.", victim) 1134 end 1135 end 1136 if not killer == victim then 1137 core.log("action", string.format("%s killed %s", killer, victim)) 1138 end 1139 -- Kill victim 1140 victimref:set_hp(0) 1141 return true, string.format("%s has been killed.", victim) 1142end 1143 1144core.register_chatcommand("kill", { 1145 params = "[<name>]", 1146 description = "Kill player or yourself", 1147 privs = {server=true}, 1148 func = function(name, param) 1149 return handle_kill_command(name, param == "" and name or param) 1150 end, 1151}) 1152