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
 114                         TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY
 115                 Rename TOSERVER_PASSWORD to TOSERVER_PASSWORD_LEGACY
 116                 Rename TOSERVER_INIT to TOSERVER_INIT_LEGACY
 117                 Rename TOCLIENT_INIT to TOCLIENT_INIT_LEGACY
 118                 Add TOCLIENT_ACCESS_DENIED new opcode (0x0A), using error codes
 119                         for standard error, keeping customisation possible. This
 120                         permit translation
 121                 Add TOCLIENT_DELETE_PARTICLESPAWNER (0x53), fixing the u16 read and
 122                         reading u32
 123                 Add TOSERVER_INIT new opcode (0x02) for client presentation to server
 124                 Add TOSERVER_AUTH new opcode (0x03) for client authentication
 125                 Add TOCLIENT_HELLO for presenting server to client after client
 126                         presentation
 127                 Add TOCLIENT_AUTH_ACCEPT to accept connexion from client
 128 */
 129
 130 #define LATEST_PROTOCOL_VERSION 24
 131
 132 // Server's supported network protocol range
 133 #define SERVER_PROTOCOL_VERSION_MIN 13
 134 #define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 135
 136 // Client's supported network protocol range
 137 #define CLIENT_PROTOCOL_VERSION_MIN 13
 138 #define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 139
 140 // Constant that differentiates the protocol from random data and other protocols
 141 #define PROTOCOL_ID 0x4f457403
 142
 143 #define PASSWORD_SIZE 28       // Maximum password length. Allows for
 144                                // base64-encoded SHA-1 (27+\0).
 145
 146 #define FORMSPEC_API_VERSION 1
 147 #define FORMSPEC_VERSION_STRING "formspec_version[" TOSTRING(FORMSPEC_API_VERSION) "]"
 148
 149 #define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"
 150
 151 enum ToClientCommand
 152 {
 153         TOCLIENT_HELLO = 0x02,
 154         TOCLIENT_AUTH_ACCEPT = 0x03,
 155         TOCLIENT_ACCESS_DENIED = 0x0A,
 156         /*
 157                 u16 command
 158                 u16 reason_length
 159                 wstring reason
 160         */
 161
 162         TOCLIENT_INIT_LEGACY = 0x10,
 163         /*
 164                 Server's reply to TOSERVER_INIT.
 165                 Sent second after connected.
 166
 167                 [0] u16 TOSERVER_INIT
 168                 [2] u8 deployed version
 169                 [3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
 170                 [12] u64 map seed (new as of 2011-02-27)
 171                 [20] f1000 recommended send interval (in seconds) (new as of 14)
 172
 173                 NOTE: The position in here is deprecated; position is
 174                       explicitly sent afterwards
 175         */
 176
 177         TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
 178         TOCLIENT_ADDNODE = 0x21,
 179         /*
 180                 u16 command
 181                 v3s16 position
 182                 serialized mapnode
 183                 u8 keep_metadata // Added in protocol version 22
 184         */
 185         TOCLIENT_REMOVENODE = 0x22,
 186
 187         TOCLIENT_PLAYERPOS = 0x23, // Obsolete
 188         /*
 189                 [0] u16 command
 190                 // Followed by an arbitary number of these:
 191                 // Number is determined from packet length.
 192                 [N] u16 peer_id
 193                 [N+2] v3s32 position*100
 194                 [N+2+12] v3s32 speed*100
 195                 [N+2+12+12] s32 pitch*100
 196                 [N+2+12+12+4] s32 yaw*100
 197         */
 198
 199         TOCLIENT_PLAYERINFO = 0x24, // Obsolete
 200         /*
 201                 [0] u16 command
 202                 // Followed by an arbitary number of these:
 203                 // Number is determined from packet length.
 204                 [N] u16 peer_id
 205                 [N] char[20] name
 206         */
 207
 208         TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
 209
 210         TOCLIENT_SECTORMETA = 0x26, // Obsolete
 211         /*
 212                 [0] u16 command
 213                 [2] u8 sector count
 214                 [3...] v2s16 pos + sector metadata
 215         */
 216
 217         TOCLIENT_INVENTORY = 0x27,
 218         /*
 219                 [0] u16 command
 220                 [2] serialized inventory
 221         */
 222
 223         TOCLIENT_OBJECTDATA = 0x28, // Obsolete
 224         /*
 225                 Sent as unreliable.
 226
 227                 u16 command
 228                 u16 number of player positions
 229                 for each player:
 230                         u16 peer_id
 231                         v3s32 position*100
 232                         v3s32 speed*100
 233                         s32 pitch*100
 234                         s32 yaw*100
 235                 u16 count of blocks
 236                 for each block:
 237                         v3s16 blockpos
 238                         block objects
 239         */
 240
 241         TOCLIENT_TIME_OF_DAY = 0x29,
 242         /*
 243                 u16 command
 244                 u16 time (0-23999)
 245                 Added in a later version:
 246                 f1000 time_speed
 247         */
 248
 249         // (oops, there is some gap here)
 250
 251         TOCLIENT_CHAT_MESSAGE = 0x30,
 252         /*
 253                 u16 command
 254                 u16 length
 255                 wstring message
 256         */
 257
 258         TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
 259         /*
 260                 u16 command
 261                 u16 count of removed objects
 262                 for all removed objects {
 263                         u16 id
 264                 }
 265                 u16 count of added objects
 266                 for all added objects {
 267                         u16 id
 268                         u8 type
 269                         u32 initialization data length
 270                         string initialization data
 271                 }
 272         */
 273
 274         TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
 275         /*
 276                 u16 command
 277                 for all objects
 278                 {
 279                         u16 id
 280                         u16 message length
 281                         string message
 282                 }
 283         */
 284
 285         TOCLIENT_HP = 0x33,
 286         /*
 287                 u16 command
 288                 u8 hp
 289         */
 290
 291         TOCLIENT_MOVE_PLAYER = 0x34,
 292         /*
 293                 u16 command
 294                 v3f1000 player position
 295                 f1000 player pitch
 296                 f1000 player yaw
 297         */
 298
 299         TOCLIENT_ACCESS_DENIED_LEGACY = 0x35,
 300         /*
 301                 u16 command
 302                 u16 reason_length
 303                 wstring reason
 304         */
 305
 306         TOCLIENT_PLAYERITEM = 0x36, // Obsolete
 307         /*
 308                 u16 command
 309                 u16 count of player items
 310                 for all player items {
 311                         u16 peer id
 312                         u16 length of serialized item
 313                         string serialized item
 314                 }
 315         */
 316
 317         TOCLIENT_DEATHSCREEN = 0x37,
 318         /*
 319                 u16 command
 320                 u8 bool set camera point target
 321                 v3f1000 camera point target (to point the death cause or whatever)
 322         */
 323
 324         TOCLIENT_MEDIA = 0x38,
 325         /*
 326                 u16 command
 327                 u16 total number of texture bunches
 328                 u16 index of this bunch
 329                 u32 number of files in this bunch
 330                 for each file {
 331                         u16 length of name
 332                         string name
 333                         u32 length of data
 334                         data
 335                 }
 336                 u16 length of remote media server url (if applicable)
 337                 string url
 338         */
 339
 340         TOCLIENT_TOOLDEF = 0x39,
 341         /*
 342                 u16 command
 343                 u32 length of the next item
 344                 serialized ToolDefManager
 345         */
 346
 347         TOCLIENT_NODEDEF = 0x3a,
 348         /*
 349                 u16 command
 350                 u32 length of the next item
 351                 serialized NodeDefManager
 352         */
 353
 354         TOCLIENT_CRAFTITEMDEF = 0x3b,
 355         /*
 356                 u16 command
 357                 u32 length of the next item
 358                 serialized CraftiItemDefManager
 359         */
 360
 361         TOCLIENT_ANNOUNCE_MEDIA = 0x3c,
 362
 363         /*
 364                 u16 command
 365                 u32 number of files
 366                 for each texture {
 367                         u16 length of name
 368                         string name
 369                         u16 length of sha1_digest
 370                         string sha1_digest
 371                 }
 372         */
 373
 374         TOCLIENT_ITEMDEF = 0x3d,
 375         /*
 376                 u16 command
 377                 u32 length of next item
 378                 serialized ItemDefManager
 379         */
 380
 381         TOCLIENT_PLAY_SOUND = 0x3f,
 382         /*
 383                 u16 command
 384                 s32 sound_id
 385                 u16 len
 386                 u8[len] sound name
 387                 s32 gain*1000
 388                 u8 type (0=local, 1=positional, 2=object)
 389                 s32[3] pos_nodes*10000
 390                 u16 object_id
 391                 u8 loop (bool)
 392         */
 393
 394         TOCLIENT_STOP_SOUND = 0x40,
 395         /*
 396                 u16 command
 397                 s32 sound_id
 398         */
 399
 400         TOCLIENT_PRIVILEGES = 0x41,
 401         /*
 402                 u16 command
 403                 u16 number of privileges
 404                 for each privilege
 405                         u16 len
 406                         u8[len] privilege
 407         */
 408
 409         TOCLIENT_INVENTORY_FORMSPEC = 0x42,
 410         /*
 411                 u16 command
 412                 u32 len
 413                 u8[len] formspec
 414         */
 415
 416         TOCLIENT_DETACHED_INVENTORY = 0x43,
 417         /*
 418                 [0] u16 command
 419                 u16 len
 420                 u8[len] name
 421                 [2] serialized inventory
 422         */
 423
 424         TOCLIENT_SHOW_FORMSPEC = 0x44,
 425         /*
 426                 [0] u16 command
 427                 u32 len
 428                 u8[len] formspec
 429                 u16 len
 430                 u8[len] formname
 431         */
 432
 433         TOCLIENT_MOVEMENT = 0x45,
 434         /*
 435                 u16 command
 436                 f1000 movement_acceleration_default
 437                 f1000 movement_acceleration_air
 438                 f1000 movement_acceleration_fast
 439                 f1000 movement_speed_walk
 440                 f1000 movement_speed_crouch
 441                 f1000 movement_speed_fast
 442                 f1000 movement_speed_climb
 443                 f1000 movement_speed_jump
 444                 f1000 movement_liquid_fluidity
 445                 f1000 movement_liquid_fluidity_smooth
 446                 f1000 movement_liquid_sink
 447                 f1000 movement_gravity
 448         */
 449
 450         TOCLIENT_SPAWN_PARTICLE = 0x46,
 451         /*
 452                 u16 command
 453                 v3f1000 pos
 454                 v3f1000 velocity
 455                 v3f1000 acceleration
 456                 f1000 expirationtime
 457                 f1000 size
 458                 u8 bool collisiondetection
 459                 u8 bool vertical
 460                 u32 len
 461                 u8[len] texture
 462         */
 463
 464         TOCLIENT_ADD_PARTICLESPAWNER = 0x47,
 465         /*
 466                 u16 command
 467                 u16 amount
 468                 f1000 spawntime
 469                 v3f1000 minpos
 470                 v3f1000 maxpos
 471                 v3f1000 minvel
 472                 v3f1000 maxvel
 473                 v3f1000 minacc
 474                 v3f1000 maxacc
 475                 f1000 minexptime
 476                 f1000 maxexptime
 477                 f1000 minsize
 478                 f1000 maxsize
 479                 u8 bool collisiondetection
 480                 u8 bool vertical
 481                 u32 len
 482                 u8[len] texture
 483                 u32 id
 484         */
 485
 486         TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY = 0x48,
 487         /*
 488                 u16 command
 489                 u16 id
 490         */
 491
 492         TOCLIENT_HUDADD = 0x49,
 493         /*
 494                 u16 command
 495                 u32 id
 496                 u8 type
 497                 v2f1000 pos
 498                 u32 len
 499                 u8[len] name
 500                 v2f1000 scale
 501                 u32 len2
 502                 u8[len2] text
 503                 u32 number
 504                 u32 item
 505                 u32 dir
 506                 v2f1000 align
 507                 v2f1000 offset
 508                 v3f1000 world_pos
 509                 v2s32 size
 510         */
 511
 512         TOCLIENT_HUDRM = 0x4a,
 513         /*
 514                 u16 command
 515                 u32 id
 516         */
 517
 518         TOCLIENT_HUDCHANGE = 0x4b,
 519         /*
 520                 u16 command
 521                 u32 id
 522                 u8 stat
 523                 [v2f1000 data |
 524                  u32 len
 525                  u8[len] data |
 526                  u32 data]
 527         */
 528
 529         TOCLIENT_HUD_SET_FLAGS = 0x4c,
 530         /*
 531                 u16 command
 532                 u32 flags
 533                 u32 mask
 534         */
 535
 536         TOCLIENT_HUD_SET_PARAM = 0x4d,
 537         /*
 538                 u16 command
 539                 u16 param
 540                 u16 len
 541                 u8[len] value
 542         */
 543
 544         TOCLIENT_BREATH = 0x4e,
 545         /*
 546                 u16 command
 547                 u16 breath
 548         */
 549
 550         TOCLIENT_SET_SKY = 0x4f,
 551         /*
 552                 u16 command
 553                 u8[4] color (ARGB)
 554                 u8 len
 555                 u8[len] type
 556                 u16 count
 557                 foreach count:
 558                         u8 len
 559                         u8[len] param
 560         */
 561
 562         TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO = 0x50,
 563         /*
 564                 u16 command
 565                 u8 do_override (boolean)
 566                 u16 day-night ratio 0...65535
 567         */
 568
 569         TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
 570         /*
 571                 u16 command
 572                 v2s32 stand/idle
 573                 v2s32 walk
 574                 v2s32 dig
 575                 v2s32 walk+dig
 576                 f1000 frame_speed
 577         */
 578
 579         TOCLIENT_EYE_OFFSET = 0x52,
 580         /*
 581                 u16 command
 582                 v3f1000 first
 583                 v3f1000 third
 584         */
 585
 586         TOCLIENT_DELETE_PARTICLESPAWNER = 0x53,
 587         /*
 588                 u16 command
 589                 u32 id
 590         */
 591
 592         TOCLIENT_NUM_MSG_TYPES = 0x54,
 593 };
 594
 595 enum ToServerCommand
 596 {
 597         TOSERVER_INIT = 0x02,
 598         /*
 599                 Sent first after connected.
 600
 601                 [0] u16 TOSERVER_INIT
 602                 [2] u8 SER_FMT_VER_HIGHEST_READ
 603                 [3] u8 compression_modes
 604         */
 605
 606         TOSERVER_AUTH = 0x03,
 607         /*
 608                 Sent first after presentation (INIT).
 609                 [0] std::string player_name
 610                 [0+*] std::string password (new in some version)
 611                 [0+*+*] u16 minimum supported network protocol version (added sometime)
 612                 [0+*+*+2] u16 maximum supported network protocol version (added later than the previous one)
 613         */
 614
 615         TOSERVER_INIT_LEGACY = 0x10,
 616         /*
 617                 Sent first after connected.
 618
 619                 [0] u16 TOSERVER_INIT
 620                 [2] u8 SER_FMT_VER_HIGHEST_READ
 621                 [3] u8[20] player_name
 622                 [23] u8[28] password (new in some version)
 623                 [51] u16 minimum supported network protocol version (added sometime)
 624                 [53] u16 maximum supported network protocol version (added later than the previous one)
 625         */
 626
 627         TOSERVER_INIT2 = 0x11,
 628         /*
 629                 Sent as an ACK for TOCLIENT_INIT.
 630                 After this, the server can send data.
 631
 632                 [0] u16 TOSERVER_INIT2
 633         */
 634
 635         TOSERVER_GETBLOCK=0x20, // Obsolete
 636         TOSERVER_ADDNODE = 0x21, // Obsolete
 637         TOSERVER_REMOVENODE = 0x22, // Obsolete
 638
 639         TOSERVER_PLAYERPOS = 0x23,
 640         /*
 641                 [0] u16 command
 642                 [2] v3s32 position*100
 643                 [2+12] v3s32 speed*100
 644                 [2+12+12] s32 pitch*100
 645                 [2+12+12+4] s32 yaw*100
 646                 [2+12+12+4+4] u32 keyPressed
 647         */
 648
 649         TOSERVER_GOTBLOCKS = 0x24,
 650         /*
 651                 [0] u16 command
 652                 [2] u8 count
 653                 [3] v3s16 pos_0
 654                 [3+6] v3s16 pos_1
 655                 ...
 656         */
 657
 658         TOSERVER_DELETEDBLOCKS = 0x25,
 659         /*
 660                 [0] u16 command
 661                 [2] u8 count
 662                 [3] v3s16 pos_0
 663                 [3+6] v3s16 pos_1
 664                 ...
 665         */
 666
 667         TOSERVER_ADDNODE_FROM_INVENTORY = 0x26, // Obsolete
 668         /*
 669                 [0] u16 command
 670                 [2] v3s16 pos
 671                 [8] u16 i
 672         */
 673
 674         TOSERVER_CLICK_OBJECT = 0x27, // Obsolete
 675         /*
 676                 length: 13
 677                 [0] u16 command
 678                 [2] u8 button (0=left, 1=right)
 679                 [3] v3s16 blockpos
 680                 [9] s16 id
 681                 [11] u16 item
 682         */
 683
 684         TOSERVER_GROUND_ACTION = 0x28, // Obsolete
 685         /*
 686                 length: 17
 687                 [0] u16 command
 688                 [2] u8 action
 689                 [3] v3s16 nodepos_undersurface
 690                 [9] v3s16 nodepos_abovesurface
 691                 [15] u16 item
 692                 actions:
 693                 0: start digging (from undersurface)
 694                 1: place block (to abovesurface)
 695                 2: stop digging (all parameters ignored)
 696                 3: digging completed
 697         */
 698
 699         TOSERVER_RELEASE = 0x29, // Obsolete
 700
 701         // (oops, there is some gap here)
 702
 703         TOSERVER_SIGNTEXT = 0x30, // Old signs, obsolete
 704         /*
 705                 u16 command
 706                 v3s16 blockpos
 707                 s16 id
 708                 u16 textlen
 709                 textdata
 710         */
 711
 712         TOSERVER_INVENTORY_ACTION = 0x31,
 713         /*
 714                 See InventoryAction in inventorymanager.h
 715         */
 716
 717         TOSERVER_CHAT_MESSAGE = 0x32,
 718         /*
 719                 u16 command
 720                 u16 length
 721                 wstring message
 722         */
 723
 724         TOSERVER_SIGNNODETEXT = 0x33, // obsolete
 725         /*
 726                 u16 command
 727                 v3s16 p
 728                 u16 textlen
 729                 textdata
 730         */
 731
 732         TOSERVER_CLICK_ACTIVEOBJECT = 0x34, // Obsolete
 733         /*
 734                 length: 7
 735                 [0] u16 command
 736                 [2] u8 button (0=left, 1=right)
 737                 [3] u16 id
 738                 [5] u16 item
 739         */
 740
 741         TOSERVER_DAMAGE = 0x35,
 742         /*
 743                 u16 command
 744                 u8 amount
 745         */
 746
 747         TOSERVER_PASSWORD_LEGACY = 0x36,
 748         /*
 749                 Sent to change password.
 750
 751                 [0] u16 TOSERVER_PASSWORD
 752                 [2] u8[28] old password
 753                 [30] u8[28] new password
 754         */
 755
 756         TOSERVER_PLAYERITEM = 0x37,
 757         /*
 758                 Sent to change selected item.
 759
 760                 [0] u16 TOSERVER_PLAYERITEM
 761                 [2] u16 item
 762         */
 763
 764         TOSERVER_RESPAWN = 0x38,
 765         /*
 766                 u16 TOSERVER_RESPAWN
 767         */
 768
 769         TOSERVER_INTERACT = 0x39,
 770         /*
 771                 [0] u16 command
 772                 [2] u8 action
 773                 [3] u16 item
 774                 [5] u32 length of the next item
 775                 [9] serialized PointedThing
 776                 actions:
 777                 0: start digging (from undersurface) or use
 778                 1: stop digging (all parameters ignored)
 779                 2: digging completed
 780                 3: place block or item (to abovesurface)
 781                 4: use item
 782
 783                 (Obsoletes TOSERVER_GROUND_ACTION and TOSERVER_CLICK_ACTIVEOBJECT.)
 784         */
 785
 786         TOSERVER_REMOVED_SOUNDS = 0x3a,
 787         /*
 788                 u16 command
 789                 u16 len
 790                 s32[len] sound_id
 791         */
 792
 793         TOSERVER_NODEMETA_FIELDS = 0x3b,
 794         /*
 795                 u16 command
 796                 v3s16 p
 797                 u16 len
 798                 u8[len] form name (reserved for future use)
 799                 u16 number of fields
 800                 for each field:
 801                         u16 len
 802                         u8[len] field name
 803                         u32 len
 804                         u8[len] field value
 805         */
 806
 807         TOSERVER_INVENTORY_FIELDS = 0x3c,
 808         /*
 809                 u16 command
 810                 u16 len
 811                 u8[len] form name (reserved for future use)
 812                 u16 number of fields
 813                 for each field:
 814                         u16 len
 815                         u8[len] field name
 816                         u32 len
 817                         u8[len] field value
 818         */
 819
 820         TOSERVER_PASSWORD = 0x3d,
 821         /*
 822                 Sent to change password.
 823
 824                 [0] u16 TOSERVER_PASSWORD
 825                 [2] std::string old password
 826                 [2+*] std::string new password
 827         */
 828
 829         TOSERVER_REQUEST_MEDIA = 0x40,
 830         /*
 831                 u16 command
 832                 u16 number of files requested
 833                 for each file {
 834                         u16 length of name
 835                         string name
 836                 }
 837          */
 838
 839         TOSERVER_RECEIVED_MEDIA = 0x41,
 840         /*
 841                 u16 command
 842         */
 843
 844         TOSERVER_BREATH = 0x42,
 845         /*
 846                 u16 command
 847                 u16 breath
 848         */
 849
 850         TOSERVER_CLIENT_READY = 0x43,
 851         /*
 852                 u8 major
 853                 u8 minor
 854                 u8 patch
 855                 u8 reserved
 856                 u16 len
 857                 u8[len] full_version_string
 858         */
 859
 860         TOSERVER_NUM_MSG_TYPES = 0x44,
 861 };
 862
 863 enum AccessDeniedCode {
 864         SERVER_ACCESSDENIED_WRONG_PASSWORD,
 865         SERVER_ACCESSDENIED_UNEXPECTED_DATA,
 866         SERVER_ACCESSDENIED_SINGLEPLAYER,
 867         SERVER_ACCESSDENIED_WRONG_VERSION,
 868         SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME,
 869         SERVER_ACCESSDENIED_WRONG_NAME,
 870         SERVER_ACCESSDENIED_TOO_MANY_USERS,
 871         SERVER_ACCESSDENIED_EMPTY_PASSWORD,
 872         SERVER_ACCESSDENIED_ALREADY_CONNECTED,
 873         SERVER_ACCESSDENIED_SERVER_FAIL,
 874         SERVER_ACCESSDENIED_CUSTOM_STRING,
 875         SERVER_ACCESSDENIED_MAX,
 876 };
 877
 878 enum NetProtoCompressionMode {
 879         NETPROTO_COMPRESSION_ZLIB = 0,
 880 };
 881
 882 const static std::string accessDeniedStrings[SERVER_ACCESSDENIED_MAX] = {
 883         "Invalid password",
 884         "Your client sent something the server didn't expect.  Try reconnecting or updating your client",
 885         "The server is running in simple singleplayer mode.  You cannot connect.",
 886         "Your client's version is not supported.\nPlease contact server administrator.",
 887         "Player name contains disallowed characters.",
 888         "Player name not allowed.",
 889         "Too many users.",
 890         "Empty passwords are disallowed.  Set a password and try again.",
 891         "Another client is connected with this name.  If your client closed unexpectedly, try again in a minute.",
 892         "Server authention failed.  This is likely a server error."
 893         "",
 894 };
 895
 896 #endif