src/network/networkprotocol.h

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef NETWORKPROTOCOL_HEADER
  21 #define NETWORKPROTOCOL_HEADER
  22 #include "util/string.h"
  23
  24 /*
  25         changes by PROTOCOL_VERSION:
  26
  27         PROTOCOL_VERSION 3:
  28                 Base for writing changes here
  29         PROTOCOL_VERSION 4:
  30                 Add TOCLIENT_MEDIA
  31                 Add TOCLIENT_TOOLDEF
  32                 Add TOCLIENT_NODEDEF
  33                 Add TOCLIENT_CRAFTITEMDEF
  34                 Add TOSERVER_INTERACT
  35                 Obsolete TOSERVER_CLICK_ACTIVEOBJECT
  36                 Obsolete TOSERVER_GROUND_ACTION
  37         PROTOCOL_VERSION 5:
  38                 Make players to be handled mostly as ActiveObjects
  39         PROTOCOL_VERSION 6:
  40                 Only non-cached textures are sent
  41         PROTOCOL_VERSION 7:
  42                 Add TOCLIENT_ITEMDEF
  43                 Obsolete TOCLIENT_TOOLDEF
  44                 Obsolete TOCLIENT_CRAFTITEMDEF
  45                 Compress the contents of TOCLIENT_ITEMDEF and TOCLIENT_NODEDEF
  46         PROTOCOL_VERSION 8:
  47                 Digging based on item groups
  48                 Many things
  49         PROTOCOL_VERSION 9:
  50                 ContentFeatures and NodeDefManager use a different serialization
  51                     format; better for future version cross-compatibility
  52                 Many things
  53         PROTOCOL_VERSION 10:
  54                 TOCLIENT_PRIVILEGES
  55                 Version raised to force 'fly' and 'fast' privileges into effect.
  56                 Node metadata change (came in later; somewhat incompatible)
  57         PROTOCOL_VERSION 11:
  58                 TileDef in ContentFeatures
  59                 Nodebox drawtype
  60                 (some dev snapshot)
  61                 TOCLIENT_INVENTORY_FORMSPEC
  62                 (0.4.0, 0.4.1)
  63         PROTOCOL_VERSION 12:
  64                 TOSERVER_INVENTORY_FIELDS
  65                 16-bit node ids
  66                 TOCLIENT_DETACHED_INVENTORY
  67         PROTOCOL_VERSION 13:
  68                 InventoryList field "Width" (deserialization fails with old versions)
  69         PROTOCOL_VERSION 14:
  70                 Added transfer of player pressed keys to the server
  71                 Added new messages for mesh and bone animation, as well as attachments
  72                 GENERIC_CMD_SET_ANIMATION
  73                 GENERIC_CMD_SET_BONE_POSITION
  74                 GENERIC_CMD_SET_ATTACHMENT
  75         PROTOCOL_VERSION 15:
  76                 Serialization format changes
  77         PROTOCOL_VERSION 16:
  78                 TOCLIENT_SHOW_FORMSPEC
  79         PROTOCOL_VERSION 17:
  80                 Serialization format change: include backface_culling flag in TileDef
  81                 Added rightclickable field in nodedef
  82                 TOCLIENT_SPAWN_PARTICLE
  83                 TOCLIENT_ADD_PARTICLESPAWNER
  84                 TOCLIENT_DELETE_PARTICLESPAWNER
  85         PROTOCOL_VERSION 18:
  86                 damageGroups added to ToolCapabilities
  87                 sound_place added to ItemDefinition
  88         PROTOCOL_VERSION 19:
  89                 GENERIC_CMD_SET_PHYSICS_OVERRIDE
  90         PROTOCOL_VERSION 20:
  91                 TOCLIENT_HUDADD
  92                 TOCLIENT_HUDRM
  93                 TOCLIENT_HUDCHANGE
  94                 TOCLIENT_HUD_SET_FLAGS
  95         PROTOCOL_VERSION 21:
  96                 TOCLIENT_BREATH
  97                 TOSERVER_BREATH
  98                 range added to ItemDefinition
  99                 drowning, leveled and liquid_range added to ContentFeatures
 100                 stepheight and collideWithObjects added to object properties
 101                 version, heat and humidity transfer in MapBock
 102                 automatic_face_movement_dir and automatic_face_movement_dir_offset
 103                         added to object properties
 104         PROTOCOL_VERSION 22:
 105                 add swap_node
 106         PROTOCOL_VERSION 23:
 107                 TOSERVER_CLIENT_READY
 108         PROTOCOL_VERSION 24:
 109                 ContentFeatures version 7
 110                 ContentFeatures: change number of special tiles to 6 (CF_SPECIAL_COUNT)
 111         PROTOCOL_VERSION 25:
 112                 Rename TOCLIENT_ACCESS_DENIED to TOCLIENT_ACCESS_DENIED_LEGAGY
 113                 Rename TOCLIENT_DELETE_PARTICLESPAWNER to TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY
 114                 Rename TOSERVER_PASSWORD to TOSERVER_PASSWORD_LEGACY
 115                 Rename TOSERVER_INIT to TOSERVER_INIT_LEGACY
 116                 Add TOCLIENT_ACCESS_DENIED new opcode (0x0A), using error codes
 117                         for standard error, keeping customisation possible. This
 118                         permit translation
 119                 Add TOCLIENT_DELETE_PARTICLESPAWNER (0x53), fixing the u16 read and
 120                         reading u32
 121 */
 122
 123 #define LATEST_PROTOCOL_VERSION 24
 124
 125 // Server's supported network protocol range
 126 #define SERVER_PROTOCOL_VERSION_MIN 13
 127 #define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 128
 129 // Client's supported network protocol range
 130 #define CLIENT_PROTOCOL_VERSION_MIN 13
 131 #define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 132
 133 // Constant that differentiates the protocol from random data and other protocols
 134 #define PROTOCOL_ID 0x4f457403
 135
 136 #define PASSWORD_SIZE 28       // Maximum password length. Allows for
 137                                // base64-encoded SHA-1 (27+\0).
 138
 139 #define FORMSPEC_API_VERSION 1
 140 #define FORMSPEC_VERSION_STRING "formspec_version[" TOSTRING(FORMSPEC_API_VERSION) "]"
 141
 142 #define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"
 143
 144 enum ToClientCommand
 145 {
 146         TOCLIENT_ACCESS_DENIED = 0x0A,
 147         /*
 148                 u16 command
 149                 u16 reason_length
 150                 wstring reason
 151         */
 152
 153         TOCLIENT_INIT = 0x10,
 154         /*
 155                 Server's reply to TOSERVER_INIT.
 156                 Sent second after connected.
 157
 158                 [0] u16 TOSERVER_INIT
 159                 [2] u8 deployed version
 160                 [3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
 161                 [12] u64 map seed (new as of 2011-02-27)
 162                 [20] f1000 recommended send interval (in seconds) (new as of 14)
 163
 164                 NOTE: The position in here is deprecated; position is
 165                       explicitly sent afterwards
 166         */
 167
 168         TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
 169         TOCLIENT_ADDNODE = 0x21,
 170         /*
 171                 u16 command
 172                 v3s16 position
 173                 serialized mapnode
 174                 u8 keep_metadata // Added in protocol version 22
 175         */
 176         TOCLIENT_REMOVENODE = 0x22,
 177
 178         TOCLIENT_PLAYERPOS = 0x23, // Obsolete
 179         /*
 180                 [0] u16 command
 181                 // Followed by an arbitary number of these:
 182                 // Number is determined from packet length.
 183                 [N] u16 peer_id
 184                 [N+2] v3s32 position*100
 185                 [N+2+12] v3s32 speed*100
 186                 [N+2+12+12] s32 pitch*100
 187                 [N+2+12+12+4] s32 yaw*100
 188         */
 189
 190         TOCLIENT_PLAYERINFO = 0x24, // Obsolete
 191         /*
 192                 [0] u16 command
 193                 // Followed by an arbitary number of these:
 194                 // Number is determined from packet length.
 195                 [N] u16 peer_id
 196                 [N] char[20] name
 197         */
 198
 199         TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
 200
 201         TOCLIENT_SECTORMETA = 0x26, // Obsolete
 202         /*
 203                 [0] u16 command
 204                 [2] u8 sector count
 205                 [3...] v2s16 pos + sector metadata
 206         */
 207
 208         TOCLIENT_INVENTORY = 0x27,
 209         /*
 210                 [0] u16 command
 211                 [2] serialized inventory
 212         */
 213
 214         TOCLIENT_OBJECTDATA = 0x28, // Obsolete
 215         /*
 216                 Sent as unreliable.
 217
 218                 u16 command
 219                 u16 number of player positions
 220                 for each player:
 221                         u16 peer_id
 222                         v3s32 position*100
 223                         v3s32 speed*100
 224                         s32 pitch*100
 225                         s32 yaw*100
 226                 u16 count of blocks
 227                 for each block:
 228                         v3s16 blockpos
 229                         block objects
 230         */
 231
 232         TOCLIENT_TIME_OF_DAY = 0x29,
 233         /*
 234                 u16 command
 235                 u16 time (0-23999)
 236                 Added in a later version:
 237                 f1000 time_speed
 238         */
 239
 240         // (oops, there is some gap here)
 241
 242         TOCLIENT_CHAT_MESSAGE = 0x30,
 243         /*
 244                 u16 command
 245                 u16 length
 246                 wstring message
 247         */
 248
 249         TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
 250         /*
 251                 u16 command
 252                 u16 count of removed objects
 253                 for all removed objects {
 254                         u16 id
 255                 }
 256                 u16 count of added objects
 257                 for all added objects {
 258                         u16 id
 259                         u8 type
 260                         u32 initialization data length
 261                         string initialization data
 262                 }
 263         */
 264
 265         TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
 266         /*
 267                 u16 command
 268                 for all objects
 269                 {
 270                         u16 id
 271                         u16 message length
 272                         string message
 273                 }
 274         */
 275
 276         TOCLIENT_HP = 0x33,
 277         /*
 278                 u16 command
 279                 u8 hp
 280         */
 281
 282         TOCLIENT_MOVE_PLAYER = 0x34,
 283         /*
 284                 u16 command
 285                 v3f1000 player position
 286                 f1000 player pitch
 287                 f1000 player yaw
 288         */
 289
 290         TOCLIENT_ACCESS_DENIED_LEGACY = 0x35,
 291         /*
 292                 u16 command
 293                 u16 reason_length
 294                 wstring reason
 295         */
 296
 297         TOCLIENT_PLAYERITEM = 0x36, // Obsolete
 298         /*
 299                 u16 command
 300                 u16 count of player items
 301                 for all player items {
 302                         u16 peer id
 303                         u16 length of serialized item
 304                         string serialized item
 305                 }
 306         */
 307
 308         TOCLIENT_DEATHSCREEN = 0x37,
 309         /*
 310                 u16 command
 311                 u8 bool set camera point target
 312                 v3f1000 camera point target (to point the death cause or whatever)
 313         */
 314
 315         TOCLIENT_MEDIA = 0x38,
 316         /*
 317                 u16 command
 318                 u16 total number of texture bunches
 319                 u16 index of this bunch
 320                 u32 number of files in this bunch
 321                 for each file {
 322                         u16 length of name
 323                         string name
 324                         u32 length of data
 325                         data
 326                 }
 327                 u16 length of remote media server url (if applicable)
 328                 string url
 329         */
 330
 331         TOCLIENT_TOOLDEF = 0x39,
 332         /*
 333                 u16 command
 334                 u32 length of the next item
 335                 serialized ToolDefManager
 336         */
 337
 338         TOCLIENT_NODEDEF = 0x3a,
 339         /*
 340                 u16 command
 341                 u32 length of the next item
 342                 serialized NodeDefManager
 343         */
 344
 345         TOCLIENT_CRAFTITEMDEF = 0x3b,
 346         /*
 347                 u16 command
 348                 u32 length of the next item
 349                 serialized CraftiItemDefManager
 350         */
 351
 352         TOCLIENT_ANNOUNCE_MEDIA = 0x3c,
 353
 354         /*
 355                 u16 command
 356                 u32 number of files
 357                 for each texture {
 358                         u16 length of name
 359                         string name
 360                         u16 length of sha1_digest
 361                         string sha1_digest
 362                 }
 363         */
 364
 365         TOCLIENT_ITEMDEF = 0x3d,
 366         /*
 367                 u16 command
 368                 u32 length of next item
 369                 serialized ItemDefManager
 370         */
 371
 372         TOCLIENT_PLAY_SOUND = 0x3f,
 373         /*
 374                 u16 command
 375                 s32 sound_id
 376                 u16 len
 377                 u8[len] sound name
 378                 s32 gain*1000
 379                 u8 type (0=local, 1=positional, 2=object)
 380                 s32[3] pos_nodes*10000
 381                 u16 object_id
 382                 u8 loop (bool)
 383         */
 384
 385         TOCLIENT_STOP_SOUND = 0x40,
 386         /*
 387                 u16 command
 388                 s32 sound_id
 389         */
 390
 391         TOCLIENT_PRIVILEGES = 0x41,
 392         /*
 393                 u16 command
 394                 u16 number of privileges
 395                 for each privilege
 396                         u16 len
 397                         u8[len] privilege
 398         */
 399
 400         TOCLIENT_INVENTORY_FORMSPEC = 0x42,
 401         /*
 402                 u16 command
 403                 u32 len
 404                 u8[len] formspec
 405         */
 406
 407         TOCLIENT_DETACHED_INVENTORY = 0x43,
 408         /*
 409                 [0] u16 command
 410                 u16 len
 411                 u8[len] name
 412                 [2] serialized inventory
 413         */
 414
 415         TOCLIENT_SHOW_FORMSPEC = 0x44,
 416         /*
 417                 [0] u16 command
 418                 u32 len
 419                 u8[len] formspec
 420                 u16 len
 421                 u8[len] formname
 422         */
 423
 424         TOCLIENT_MOVEMENT = 0x45,
 425         /*
 426                 u16 command
 427                 f1000 movement_acceleration_default
 428                 f1000 movement_acceleration_air
 429                 f1000 movement_acceleration_fast
 430                 f1000 movement_speed_walk
 431                 f1000 movement_speed_crouch
 432                 f1000 movement_speed_fast
 433                 f1000 movement_speed_climb
 434                 f1000 movement_speed_jump
 435                 f1000 movement_liquid_fluidity
 436                 f1000 movement_liquid_fluidity_smooth
 437                 f1000 movement_liquid_sink
 438                 f1000 movement_gravity
 439         */
 440
 441         TOCLIENT_SPAWN_PARTICLE = 0x46,
 442         /*
 443                 u16 command
 444                 v3f1000 pos
 445                 v3f1000 velocity
 446                 v3f1000 acceleration
 447                 f1000 expirationtime
 448                 f1000 size
 449                 u8 bool collisiondetection
 450                 u8 bool vertical
 451                 u32 len
 452                 u8[len] texture
 453         */
 454
 455         TOCLIENT_ADD_PARTICLESPAWNER = 0x47,
 456         /*
 457                 u16 command
 458                 u16 amount
 459                 f1000 spawntime
 460                 v3f1000 minpos
 461                 v3f1000 maxpos
 462                 v3f1000 minvel
 463                 v3f1000 maxvel
 464                 v3f1000 minacc
 465                 v3f1000 maxacc
 466                 f1000 minexptime
 467                 f1000 maxexptime
 468                 f1000 minsize
 469                 f1000 maxsize
 470                 u8 bool collisiondetection
 471                 u8 bool vertical
 472                 u32 len
 473                 u8[len] texture
 474                 u32 id
 475         */
 476
 477         TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY = 0x48,
 478         /*
 479                 u16 command
 480                 u16 id
 481         */
 482
 483         TOCLIENT_HUDADD = 0x49,
 484         /*
 485                 u16 command
 486                 u32 id
 487                 u8 type
 488                 v2f1000 pos
 489                 u32 len
 490                 u8[len] name
 491                 v2f1000 scale
 492                 u32 len2
 493                 u8[len2] text
 494                 u32 number
 495                 u32 item
 496                 u32 dir
 497                 v2f1000 align
 498                 v2f1000 offset
 499                 v3f1000 world_pos
 500                 v2s32 size
 501         */
 502
 503         TOCLIENT_HUDRM = 0x4a,
 504         /*
 505                 u16 command
 506                 u32 id
 507         */
 508
 509         TOCLIENT_HUDCHANGE = 0x4b,
 510         /*
 511                 u16 command
 512                 u32 id
 513                 u8 stat
 514                 [v2f1000 data |
 515                  u32 len
 516                  u8[len] data |
 517                  u32 data]
 518         */
 519
 520         TOCLIENT_HUD_SET_FLAGS = 0x4c,
 521         /*
 522                 u16 command
 523                 u32 flags
 524                 u32 mask
 525         */
 526
 527         TOCLIENT_HUD_SET_PARAM = 0x4d,
 528         /*
 529                 u16 command
 530                 u16 param
 531                 u16 len
 532                 u8[len] value
 533         */
 534
 535         TOCLIENT_BREATH = 0x4e,
 536         /*
 537                 u16 command
 538                 u16 breath
 539         */
 540
 541         TOCLIENT_SET_SKY = 0x4f,
 542         /*
 543                 u16 command
 544                 u8[4] color (ARGB)
 545                 u8 len
 546                 u8[len] type
 547                 u16 count
 548                 foreach count:
 549                         u8 len
 550                         u8[len] param
 551         */
 552
 553         TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO = 0x50,
 554         /*
 555                 u16 command
 556                 u8 do_override (boolean)
 557                 u16 day-night ratio 0...65535
 558         */
 559
 560         TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
 561         /*
 562                 u16 command
 563                 v2s32 stand/idle
 564                 v2s32 walk
 565                 v2s32 dig
 566                 v2s32 walk+dig
 567                 f1000 frame_speed
 568         */
 569
 570         TOCLIENT_EYE_OFFSET = 0x52,
 571         /*
 572                 u16 command
 573                 v3f1000 first
 574                 v3f1000 third
 575         */
 576
 577         TOCLIENT_DELETE_PARTICLESPAWNER = 0x53,
 578         /*
 579                 u16 command
 580                 u32 id
 581         */
 582
 583         TOCLIENT_NUM_MSG_TYPES = 0x54,
 584 };
 585
 586 enum ToServerCommand
 587 {
 588         TOSERVER_INIT = 0x0F,
 589         /*
 590                 Sent first after connected.
 591
 592                 [0] u16 TOSERVER_INIT
 593                 [2] u8 SER_FMT_VER_HIGHEST_READ
 594                 [3] u8 compression_modes
 595                 [4] std::string player_name
 596                 [4+*] std::string password (new in some version)
 597                 [4+*+*] u16 minimum supported network protocol version (added sometime)
 598                 [4+*+*+2] u16 maximum supported network protocol version (added later than the previous one)
 599         */
 600
 601         TOSERVER_INIT_LEGACY = 0x10,
 602         /*
 603                 Sent first after connected.
 604
 605                 [0] u16 TOSERVER_INIT
 606                 [2] u8 SER_FMT_VER_HIGHEST_READ
 607                 [3] u8[20] player_name
 608                 [23] u8[28] password (new in some version)
 609                 [51] u16 minimum supported network protocol version (added sometime)
 610                 [53] u16 maximum supported network protocol version (added later than the previous one)
 611         */
 612
 613         TOSERVER_INIT2 = 0x11,
 614         /*
 615                 Sent as an ACK for TOCLIENT_INIT.
 616                 After this, the server can send data.
 617
 618                 [0] u16 TOSERVER_INIT2
 619         */
 620
 621         TOSERVER_GETBLOCK=0x20, // Obsolete
 622         TOSERVER_ADDNODE = 0x21, // Obsolete
 623         TOSERVER_REMOVENODE = 0x22, // Obsolete
 624
 625         TOSERVER_PLAYERPOS = 0x23,
 626         /*
 627                 [0] u16 command
 628                 [2] v3s32 position*100
 629                 [2+12] v3s32 speed*100
 630                 [2+12+12] s32 pitch*100
 631                 [2+12+12+4] s32 yaw*100
 632                 [2+12+12+4+4] u32 keyPressed
 633         */
 634
 635         TOSERVER_GOTBLOCKS = 0x24,
 636         /*
 637                 [0] u16 command
 638                 [2] u8 count
 639                 [3] v3s16 pos_0
 640                 [3+6] v3s16 pos_1
 641                 ...
 642         */
 643
 644         TOSERVER_DELETEDBLOCKS = 0x25,
 645         /*
 646                 [0] u16 command
 647                 [2] u8 count
 648                 [3] v3s16 pos_0
 649                 [3+6] v3s16 pos_1
 650                 ...
 651         */
 652
 653         TOSERVER_ADDNODE_FROM_INVENTORY = 0x26, // Obsolete
 654         /*
 655                 [0] u16 command
 656                 [2] v3s16 pos
 657                 [8] u16 i
 658         */
 659
 660         TOSERVER_CLICK_OBJECT = 0x27, // Obsolete
 661         /*
 662                 length: 13
 663                 [0] u16 command
 664                 [2] u8 button (0=left, 1=right)
 665                 [3] v3s16 blockpos
 666                 [9] s16 id
 667                 [11] u16 item
 668         */
 669
 670         TOSERVER_GROUND_ACTION = 0x28, // Obsolete
 671         /*
 672                 length: 17
 673                 [0] u16 command
 674                 [2] u8 action
 675                 [3] v3s16 nodepos_undersurface
 676                 [9] v3s16 nodepos_abovesurface
 677                 [15] u16 item
 678                 actions:
 679                 0: start digging (from undersurface)
 680                 1: place block (to abovesurface)
 681                 2: stop digging (all parameters ignored)
 682                 3: digging completed
 683         */
 684
 685         TOSERVER_RELEASE = 0x29, // Obsolete
 686
 687         // (oops, there is some gap here)
 688
 689         TOSERVER_SIGNTEXT = 0x30, // Old signs, obsolete
 690         /*
 691                 u16 command
 692                 v3s16 blockpos
 693                 s16 id
 694                 u16 textlen
 695                 textdata
 696         */
 697
 698         TOSERVER_INVENTORY_ACTION = 0x31,
 699         /*
 700                 See InventoryAction in inventorymanager.h
 701         */
 702
 703         TOSERVER_CHAT_MESSAGE = 0x32,
 704         /*
 705                 u16 command
 706                 u16 length
 707                 wstring message
 708         */
 709
 710         TOSERVER_SIGNNODETEXT = 0x33, // obsolete
 711         /*
 712                 u16 command
 713                 v3s16 p
 714                 u16 textlen
 715                 textdata
 716         */
 717
 718         TOSERVER_CLICK_ACTIVEOBJECT = 0x34, // Obsolete
 719         /*
 720                 length: 7
 721                 [0] u16 command
 722                 [2] u8 button (0=left, 1=right)
 723                 [3] u16 id
 724                 [5] u16 item
 725         */
 726
 727         TOSERVER_DAMAGE = 0x35,
 728         /*
 729                 u16 command
 730                 u8 amount
 731         */
 732
 733         TOSERVER_PASSWORD_LEGACY = 0x36,
 734         /*
 735                 Sent to change password.
 736
 737                 [0] u16 TOSERVER_PASSWORD
 738                 [2] u8[28] old password
 739                 [30] u8[28] new password
 740         */
 741
 742         TOSERVER_PLAYERITEM = 0x37,
 743         /*
 744                 Sent to change selected item.
 745
 746                 [0] u16 TOSERVER_PLAYERITEM
 747                 [2] u16 item
 748         */
 749
 750         TOSERVER_RESPAWN = 0x38,
 751         /*
 752                 u16 TOSERVER_RESPAWN
 753         */
 754
 755         TOSERVER_INTERACT = 0x39,
 756         /*
 757                 [0] u16 command
 758                 [2] u8 action
 759                 [3] u16 item
 760                 [5] u32 length of the next item
 761                 [9] serialized PointedThing
 762                 actions:
 763                 0: start digging (from undersurface) or use
 764                 1: stop digging (all parameters ignored)
 765                 2: digging completed
 766                 3: place block or item (to abovesurface)
 767                 4: use item
 768
 769                 (Obsoletes TOSERVER_GROUND_ACTION and TOSERVER_CLICK_ACTIVEOBJECT.)
 770         */
 771
 772         TOSERVER_REMOVED_SOUNDS = 0x3a,
 773         /*
 774                 u16 command
 775                 u16 len
 776                 s32[len] sound_id
 777         */
 778
 779         TOSERVER_NODEMETA_FIELDS = 0x3b,
 780         /*
 781                 u16 command
 782                 v3s16 p
 783                 u16 len
 784                 u8[len] form name (reserved for future use)
 785                 u16 number of fields
 786                 for each field:
 787                         u16 len
 788                         u8[len] field name
 789                         u32 len
 790                         u8[len] field value
 791         */
 792
 793         TOSERVER_INVENTORY_FIELDS = 0x3c,
 794         /*
 795                 u16 command
 796                 u16 len
 797                 u8[len] form name (reserved for future use)
 798                 u16 number of fields
 799                 for each field:
 800                         u16 len
 801                         u8[len] field name
 802                         u32 len
 803                         u8[len] field value
 804         */
 805
 806         TOSERVER_PASSWORD = 0x3d,
 807         /*
 808                 Sent to change password.
 809
 810                 [0] u16 TOSERVER_PASSWORD
 811                 [2] std::string old password
 812                 [2+*] std::string new password
 813         */
 814
 815         TOSERVER_REQUEST_MEDIA = 0x40,
 816         /*
 817                 u16 command
 818                 u16 number of files requested
 819                 for each file {
 820                         u16 length of name
 821                         string name
 822                 }
 823          */
 824
 825         TOSERVER_RECEIVED_MEDIA = 0x41,
 826         /*
 827                 u16 command
 828         */
 829
 830         TOSERVER_BREATH = 0x42,
 831         /*
 832                 u16 command
 833                 u16 breath
 834         */
 835
 836         TOSERVER_CLIENT_READY = 0x43,
 837         /*
 838                 u8 major
 839                 u8 minor
 840                 u8 patch
 841                 u8 reserved
 842                 u16 len
 843                 u8[len] full_version_string
 844         */
 845
 846         TOSERVER_NUM_MSG_TYPES = 0x44,
 847 };
 848
 849 enum AccessDeniedCode {
 850         SERVER_ACCESSDENIED_WRONG_PASSWORD = 0,
 851         SERVER_ACCESSDENIED_UNEXPECTED_DATA = 1,
 852         SERVER_ACCESSDENIED_SINGLEPLAYER = 2,
 853         SERVER_ACCESSDENIED_WRONG_VERSION = 3,
 854         SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME = 4,
 855         SERVER_ACCESSDENIED_WRONG_NAME = 5,
 856         SERVER_ACCESSDENIED_TOO_MANY_USERS = 6,
 857         SERVER_ACCESSDENIED_EMPTY_PASSWORD = 7,
 858         SERVER_ACCESSDENIED_ALREADY_CONNECTED = 8,
 859         SERVER_ACCESSDENIED_CUSTOM_STRING = 9,
 860         SERVER_ACCESSDENIED_MAX = 10,
 861 };
 862
 863 enum NetProtoCompressionMode {
 864         NETPROTO_COMPRESSION_ZLIB = 0,
 865 };
 866
 867 const static std::wstring accessDeniedStrings[SERVER_ACCESSDENIED_MAX] = {
 868         L"Invalid password",
 869         L"Your client sent something server didn't expect. Try reconnecting or updating your client",
 870         L"The server is running in simple singleplayer mode. You cannot connect.",
 871         L"Your client's version is not supported.\nPlease contact server administrator.",
 872         L"Name contains unallowed characters",
 873         L"Name is not allowed",
 874         L"Too many users.",
 875         L"Empty passwords are disallowed. Set a password and try again.",
 876         L"Another client is connected with this name. If your client closed unexpectedly, try again in a minute.",
 877         L"",
 878 };
 879
 880 #endif