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 new opcode TOSERVER_INIT for client presentation to server
 124                 Add new opcodes TOSERVER_FIRST_SRP, TOSERVER_SRP_BYTES_A,
 125                         TOSERVER_SRP_BYTES_M, TOCLIENT_SRP_BYTES_S_B
 126                         for the three supported auth mechanisms around srp
 127                 Add new opcodes TOCLIENT_ACCEPT_SUDO_MODE and TOCLIENT_DENY_SUDO_MODE
 128                         for sudo mode handling (auth mech generic way of changing password).
 129                 Add TOCLIENT_HELLO for presenting server to client after client
 130                         presentation
 131                 Add TOCLIENT_AUTH_ACCEPT to accept connection from client
 132                 Rename GENERIC_CMD_SET_ATTACHMENT to GENERIC_CMD_ATTACH_TO
 133         PROTOCOL_VERSION 26:
 134                 Add TileDef tileable_horizontal, tileable_vertical flags
 135 */
 136
 137 #define LATEST_PROTOCOL_VERSION 25
 138
 139 // Server's supported network protocol range
 140 #define SERVER_PROTOCOL_VERSION_MIN 13
 141 #define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 142
 143 // Client's supported network protocol range
 144 #define CLIENT_PROTOCOL_VERSION_MIN 13
 145 #define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
 146
 147 // Constant that differentiates the protocol from random data and other protocols
 148 #define PROTOCOL_ID 0x4f457403
 149
 150 #define PASSWORD_SIZE 28       // Maximum password length. Allows for
 151                                // base64-encoded SHA-1 (27+\0).
 152
 153 #define FORMSPEC_API_VERSION 1
 154 #define FORMSPEC_VERSION_STRING "formspec_version[" TOSTRING(FORMSPEC_API_VERSION) "]"
 155
 156 #define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"
 157
 158 enum ToClientCommand
 159 {
 160         TOCLIENT_HELLO = 0x02,
 161         /*
 162                 Sent after TOSERVER_INIT.
 163
 164                 u8 deployed serialisation version
 165                 u16 deployed network compression mode
 166                 u16 deployed protocol version
 167                 u32 supported auth methods
 168                 std::string username that should be used for legacy hash (for proper casing)
 169         */
 170         TOCLIENT_AUTH_ACCEPT = 0x03,
 171         /*
 172                 Message from server to accept auth.
 173
 174                 v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
 175                 u64 map seed
 176                 f1000 recommended send interval
 177                 u32 : supported auth methods for sudo mode
 178                       (where the user can change their password)
 179         */
 180         TOCLIENT_ACCEPT_SUDO_MODE = 0x04,
 181         /*
 182                 Sent to client to show it is in sudo mode now.
 183         */
 184         TOCLIENT_DENY_SUDO_MODE = 0x05,
 185         /*
 186                 Signals client that sudo mode auth failed.
 187         */
 188         TOCLIENT_INIT_LEGACY = 0x10,
 189         /*
 190                 Server's reply to TOSERVER_INIT.
 191                 Sent second after connected.
 192
 193                 [0] u16 TOSERVER_INIT
 194                 [2] u8 deployed version
 195                 [3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
 196                 [12] u64 map seed (new as of 2011-02-27)
 197                 [20] f1000 recommended send interval (in seconds) (new as of 14)
 198
 199                 NOTE: The position in here is deprecated; position is
 200                       explicitly sent afterwards
 201         */
 202         TOCLIENT_ACCESS_DENIED = 0x0A,
 203         /*
 204                 u8 reason
 205                 std::string custom reason (if reason == SERVER_ACCESSDENIED_CUSTOM_STRING)
 206         */
 207         TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
 208         TOCLIENT_ADDNODE = 0x21,
 209         /*
 210                 u16 command
 211                 v3s16 position
 212                 serialized mapnode
 213                 u8 keep_metadata // Added in protocol version 22
 214         */
 215         TOCLIENT_REMOVENODE = 0x22,
 216
 217         TOCLIENT_PLAYERPOS = 0x23, // Obsolete
 218         /*
 219                 [0] u16 command
 220                 // Followed by an arbitary number of these:
 221                 // Number is determined from packet length.
 222                 [N] u16 peer_id
 223                 [N+2] v3s32 position*100
 224                 [N+2+12] v3s32 speed*100
 225                 [N+2+12+12] s32 pitch*100
 226                 [N+2+12+12+4] s32 yaw*100
 227         */
 228
 229         TOCLIENT_PLAYERINFO = 0x24, // Obsolete
 230         /*
 231                 [0] u16 command
 232                 // Followed by an arbitary number of these:
 233                 // Number is determined from packet length.
 234                 [N] u16 peer_id
 235                 [N] char[20] name
 236         */
 237
 238         TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
 239
 240         TOCLIENT_SECTORMETA = 0x26, // Obsolete
 241         /*
 242                 [0] u16 command
 243                 [2] u8 sector count
 244                 [3...] v2s16 pos + sector metadata
 245         */
 246
 247         TOCLIENT_INVENTORY = 0x27,
 248         /*
 249                 [0] u16 command
 250                 [2] serialized inventory
 251         */
 252
 253         TOCLIENT_OBJECTDATA = 0x28, // Obsolete
 254         /*
 255                 Sent as unreliable.
 256
 257                 u16 command
 258                 u16 number of player positions
 259                 for each player:
 260                         u16 peer_id
 261                         v3s32 position*100
 262                         v3s32 speed*100
 263                         s32 pitch*100
 264                         s32 yaw*100
 265                 u16 count of blocks
 266                 for each block:
 267                         v3s16 blockpos
 268                         block objects
 269         */
 270
 271         TOCLIENT_TIME_OF_DAY = 0x29,
 272         /*
 273                 u16 command
 274                 u16 time (0-23999)
 275                 Added in a later version:
 276                 f1000 time_speed
 277         */
 278
 279         // (oops, there is some gap here)
 280
 281         TOCLIENT_CHAT_MESSAGE = 0x30,
 282         /*
 283                 u16 command
 284                 u16 length
 285                 wstring message
 286         */
 287
 288         TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
 289         /*
 290                 u16 command
 291                 u16 count of removed objects
 292                 for all removed objects {
 293                         u16 id
 294                 }
 295                 u16 count of added objects
 296                 for all added objects {
 297                         u16 id
 298                         u8 type
 299                         u32 initialization data length
 300                         string initialization data
 301                 }
 302         */
 303
 304         TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
 305         /*
 306                 u16 command
 307                 for all objects
 308                 {
 309                         u16 id
 310                         u16 message length
 311                         string message
 312                 }
 313         */
 314
 315         TOCLIENT_HP = 0x33,
 316         /*
 317                 u16 command
 318                 u8 hp
 319         */
 320
 321         TOCLIENT_MOVE_PLAYER = 0x34,
 322         /*
 323                 u16 command
 324                 v3f1000 player position
 325                 f1000 player pitch
 326                 f1000 player yaw
 327         */
 328
 329         TOCLIENT_ACCESS_DENIED_LEGACY = 0x35,
 330         /*
 331                 u16 command
 332                 u16 reason_length
 333                 wstring reason
 334         */
 335
 336         TOCLIENT_PLAYERITEM = 0x36, // Obsolete
 337         /*
 338                 u16 command
 339                 u16 count of player items
 340                 for all player items {
 341                         u16 peer id
 342                         u16 length of serialized item
 343                         string serialized item
 344                 }
 345         */
 346
 347         TOCLIENT_DEATHSCREEN = 0x37,
 348         /*
 349                 u16 command
 350                 u8 bool set camera point target
 351                 v3f1000 camera point target (to point the death cause or whatever)
 352         */
 353
 354         TOCLIENT_MEDIA = 0x38,
 355         /*
 356                 u16 command
 357                 u16 total number of texture bunches
 358                 u16 index of this bunch
 359                 u32 number of files in this bunch
 360                 for each file {
 361                         u16 length of name
 362                         string name
 363                         u32 length of data
 364                         data
 365                 }
 366                 u16 length of remote media server url (if applicable)
 367                 string url
 368         */
 369
 370         TOCLIENT_TOOLDEF = 0x39,
 371         /*
 372                 u16 command
 373                 u32 length of the next item
 374                 serialized ToolDefManager
 375         */
 376
 377         TOCLIENT_NODEDEF = 0x3a,
 378         /*
 379                 u16 command
 380                 u32 length of the next item
 381                 serialized NodeDefManager
 382         */
 383
 384         TOCLIENT_CRAFTITEMDEF = 0x3b,
 385         /*
 386                 u16 command
 387                 u32 length of the next item
 388                 serialized CraftiItemDefManager
 389         */
 390
 391         TOCLIENT_ANNOUNCE_MEDIA = 0x3c,
 392
 393         /*
 394                 u16 command
 395                 u32 number of files
 396                 for each texture {
 397                         u16 length of name
 398                         string name
 399                         u16 length of sha1_digest
 400                         string sha1_digest
 401                 }
 402         */
 403
 404         TOCLIENT_ITEMDEF = 0x3d,
 405         /*
 406                 u16 command
 407                 u32 length of next item
 408                 serialized ItemDefManager
 409         */
 410
 411         TOCLIENT_PLAY_SOUND = 0x3f,
 412         /*
 413                 u16 command
 414                 s32 sound_id
 415                 u16 len
 416                 u8[len] sound name
 417                 s32 gain*1000
 418                 u8 type (0=local, 1=positional, 2=object)
 419                 s32[3] pos_nodes*10000
 420                 u16 object_id
 421                 u8 loop (bool)
 422         */
 423
 424         TOCLIENT_STOP_SOUND = 0x40,
 425         /*
 426                 u16 command
 427                 s32 sound_id
 428         */
 429
 430         TOCLIENT_PRIVILEGES = 0x41,
 431         /*
 432                 u16 command
 433                 u16 number of privileges
 434                 for each privilege
 435                         u16 len
 436                         u8[len] privilege
 437         */
 438
 439         TOCLIENT_INVENTORY_FORMSPEC = 0x42,
 440         /*
 441                 u16 command
 442                 u32 len
 443                 u8[len] formspec
 444         */
 445
 446         TOCLIENT_DETACHED_INVENTORY = 0x43,
 447         /*
 448                 [0] u16 command
 449                 u16 len
 450                 u8[len] name
 451                 [2] serialized inventory
 452         */
 453
 454         TOCLIENT_SHOW_FORMSPEC = 0x44,
 455         /*
 456                 [0] u16 command
 457                 u32 len
 458                 u8[len] formspec
 459                 u16 len
 460                 u8[len] formname
 461         */
 462
 463         TOCLIENT_MOVEMENT = 0x45,
 464         /*
 465                 u16 command
 466                 f1000 movement_acceleration_default
 467                 f1000 movement_acceleration_air
 468                 f1000 movement_acceleration_fast
 469                 f1000 movement_speed_walk
 470                 f1000 movement_speed_crouch
 471                 f1000 movement_speed_fast
 472                 f1000 movement_speed_climb
 473                 f1000 movement_speed_jump
 474                 f1000 movement_liquid_fluidity
 475                 f1000 movement_liquid_fluidity_smooth
 476                 f1000 movement_liquid_sink
 477                 f1000 movement_gravity
 478         */
 479
 480         TOCLIENT_SPAWN_PARTICLE = 0x46,
 481         /*
 482                 u16 command
 483                 v3f1000 pos
 484                 v3f1000 velocity
 485                 v3f1000 acceleration
 486                 f1000 expirationtime
 487                 f1000 size
 488                 u8 bool collisiondetection
 489                 u8 bool vertical
 490                 u32 len
 491                 u8[len] texture
 492         */
 493
 494         TOCLIENT_ADD_PARTICLESPAWNER = 0x47,
 495         /*
 496                 u16 command
 497                 u16 amount
 498                 f1000 spawntime
 499                 v3f1000 minpos
 500                 v3f1000 maxpos
 501                 v3f1000 minvel
 502                 v3f1000 maxvel
 503                 v3f1000 minacc
 504                 v3f1000 maxacc
 505                 f1000 minexptime
 506                 f1000 maxexptime
 507                 f1000 minsize
 508                 f1000 maxsize
 509                 u8 bool collisiondetection
 510                 u8 bool vertical
 511                 u32 len
 512                 u8[len] texture
 513                 u32 id
 514         */
 515
 516         TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY = 0x48,
 517         /*
 518                 u16 command
 519                 u16 id
 520         */
 521
 522         TOCLIENT_HUDADD = 0x49,
 523         /*
 524                 u16 command
 525                 u32 id
 526                 u8 type
 527                 v2f1000 pos
 528                 u32 len
 529                 u8[len] name
 530                 v2f1000 scale
 531                 u32 len2
 532                 u8[len2] text
 533                 u32 number
 534                 u32 item
 535                 u32 dir
 536                 v2f1000 align
 537                 v2f1000 offset
 538                 v3f1000 world_pos
 539                 v2s32 size
 540         */
 541
 542         TOCLIENT_HUDRM = 0x4a,
 543         /*
 544                 u16 command
 545                 u32 id
 546         */
 547
 548         TOCLIENT_HUDCHANGE = 0x4b,
 549         /*
 550                 u16 command
 551                 u32 id
 552                 u8 stat
 553                 [v2f1000 data |
 554                  u32 len
 555                  u8[len] data |
 556                  u32 data]
 557         */
 558
 559         TOCLIENT_HUD_SET_FLAGS = 0x4c,
 560         /*
 561                 u16 command
 562                 u32 flags
 563                 u32 mask
 564         */
 565
 566         TOCLIENT_HUD_SET_PARAM = 0x4d,
 567         /*
 568                 u16 command
 569                 u16 param
 570                 u16 len
 571                 u8[len] value
 572         */
 573
 574         TOCLIENT_BREATH = 0x4e,
 575         /*
 576                 u16 command
 577                 u16 breath
 578         */
 579
 580         TOCLIENT_SET_SKY = 0x4f,
 581         /*
 582                 u16 command
 583                 u8[4] color (ARGB)
 584                 u8 len
 585                 u8[len] type
 586                 u16 count
 587                 foreach count:
 588                         u8 len
 589                         u8[len] param
 590         */
 591
 592         TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO = 0x50,
 593         /*
 594                 u16 command
 595                 u8 do_override (boolean)
 596                 u16 day-night ratio 0...65535
 597         */
 598
 599         TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
 600         /*
 601                 u16 command
 602                 v2s32 stand/idle
 603                 v2s32 walk
 604                 v2s32 dig
 605                 v2s32 walk+dig
 606                 f1000 frame_speed
 607         */
 608
 609         TOCLIENT_EYE_OFFSET = 0x52,
 610         /*
 611                 u16 command
 612                 v3f1000 first
 613                 v3f1000 third
 614         */
 615
 616         TOCLIENT_DELETE_PARTICLESPAWNER = 0x53,
 617         /*
 618                 u16 command
 619                 u32 id
 620         */
 621
 622         TOCLIENT_SRP_BYTES_S_B = 0x60,
 623         /*
 624                 Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP.
 625
 626                 u16 command
 627                 std::string bytes_s
 628                 std::string bytes_B
 629         */
 630
 631         TOCLIENT_NUM_MSG_TYPES = 0x61,
 632 };
 633
 634 enum ToServerCommand
 635 {
 636         TOSERVER_INIT = 0x02,
 637         /*
 638                 Sent first after connected.
 639
 640                 u8 serialisation version (=SER_FMT_VER_HIGHEST_READ)
 641                 u16 supported network compression modes
 642                 u16 minimum supported network protocol version
 643                 u16 maximum supported network protocol version
 644                 std::string player name
 645         */
 646
 647         TOSERVER_INIT_LEGACY = 0x10,
 648         /*
 649                 Sent first after connected.
 650
 651                 [0] u16 TOSERVER_INIT_LEGACY
 652                 [2] u8 SER_FMT_VER_HIGHEST_READ
 653                 [3] u8[20] player_name
 654                 [23] u8[28] password (new in some version)
 655                 [51] u16 minimum supported network protocol version (added sometime)
 656                 [53] u16 maximum supported network protocol version (added later than the previous one)
 657         */
 658
 659         TOSERVER_INIT2 = 0x11,
 660         /*
 661                 Sent as an ACK for TOCLIENT_INIT.
 662                 After this, the server can send data.
 663
 664                 [0] u16 TOSERVER_INIT2
 665         */
 666
 667         TOSERVER_GETBLOCK=0x20, // Obsolete
 668         TOSERVER_ADDNODE = 0x21, // Obsolete
 669         TOSERVER_REMOVENODE = 0x22, // Obsolete
 670
 671         TOSERVER_PLAYERPOS = 0x23,
 672         /*
 673                 [0] u16 command
 674                 [2] v3s32 position*100
 675                 [2+12] v3s32 speed*100
 676                 [2+12+12] s32 pitch*100
 677                 [2+12+12+4] s32 yaw*100
 678                 [2+12+12+4+4] u32 keyPressed
 679         */
 680
 681         TOSERVER_GOTBLOCKS = 0x24,
 682         /*
 683                 [0] u16 command
 684                 [2] u8 count
 685                 [3] v3s16 pos_0
 686                 [3+6] v3s16 pos_1
 687                 ...
 688         */
 689
 690         TOSERVER_DELETEDBLOCKS = 0x25,
 691         /*
 692                 [0] u16 command
 693                 [2] u8 count
 694                 [3] v3s16 pos_0
 695                 [3+6] v3s16 pos_1
 696                 ...
 697         */
 698
 699         TOSERVER_ADDNODE_FROM_INVENTORY = 0x26, // Obsolete
 700         /*
 701                 [0] u16 command
 702                 [2] v3s16 pos
 703                 [8] u16 i
 704         */
 705
 706         TOSERVER_CLICK_OBJECT = 0x27, // Obsolete
 707         /*
 708                 length: 13
 709                 [0] u16 command
 710                 [2] u8 button (0=left, 1=right)
 711                 [3] v3s16 blockpos
 712                 [9] s16 id
 713                 [11] u16 item
 714         */
 715
 716         TOSERVER_GROUND_ACTION = 0x28, // Obsolete
 717         /*
 718                 length: 17
 719                 [0] u16 command
 720                 [2] u8 action
 721                 [3] v3s16 nodepos_undersurface
 722                 [9] v3s16 nodepos_abovesurface
 723                 [15] u16 item
 724                 actions:
 725                 0: start digging (from undersurface)
 726                 1: place block (to abovesurface)
 727                 2: stop digging (all parameters ignored)
 728                 3: digging completed
 729         */
 730
 731         TOSERVER_RELEASE = 0x29, // Obsolete
 732
 733         // (oops, there is some gap here)
 734
 735         TOSERVER_SIGNTEXT = 0x30, // Old signs, obsolete
 736         /*
 737                 u16 command
 738                 v3s16 blockpos
 739                 s16 id
 740                 u16 textlen
 741                 textdata
 742         */
 743
 744         TOSERVER_INVENTORY_ACTION = 0x31,
 745         /*
 746                 See InventoryAction in inventorymanager.h
 747         */
 748
 749         TOSERVER_CHAT_MESSAGE = 0x32,
 750         /*
 751                 u16 command
 752                 u16 length
 753                 wstring message
 754         */
 755
 756         TOSERVER_SIGNNODETEXT = 0x33, // obsolete
 757         /*
 758                 u16 command
 759                 v3s16 p
 760                 u16 textlen
 761                 textdata
 762         */
 763
 764         TOSERVER_CLICK_ACTIVEOBJECT = 0x34, // Obsolete
 765         /*
 766                 length: 7
 767                 [0] u16 command
 768                 [2] u8 button (0=left, 1=right)
 769                 [3] u16 id
 770                 [5] u16 item
 771         */
 772
 773         TOSERVER_DAMAGE = 0x35,
 774         /*
 775                 u16 command
 776                 u8 amount
 777         */
 778
 779         TOSERVER_PASSWORD_LEGACY = 0x36,
 780         /*
 781                 Sent to change password.
 782
 783                 [0] u16 TOSERVER_PASSWORD
 784                 [2] u8[28] old password
 785                 [30] u8[28] new password
 786         */
 787
 788         TOSERVER_PLAYERITEM = 0x37,
 789         /*
 790                 Sent to change selected item.
 791
 792                 [0] u16 TOSERVER_PLAYERITEM
 793                 [2] u16 item
 794         */
 795
 796         TOSERVER_RESPAWN = 0x38,
 797         /*
 798                 u16 TOSERVER_RESPAWN
 799         */
 800
 801         TOSERVER_INTERACT = 0x39,
 802         /*
 803                 [0] u16 command
 804                 [2] u8 action
 805                 [3] u16 item
 806                 [5] u32 length of the next item
 807                 [9] serialized PointedThing
 808                 actions:
 809                 0: start digging (from undersurface) or use
 810                 1: stop digging (all parameters ignored)
 811                 2: digging completed
 812                 3: place block or item (to abovesurface)
 813                 4: use item
 814
 815                 (Obsoletes TOSERVER_GROUND_ACTION and TOSERVER_CLICK_ACTIVEOBJECT.)
 816         */
 817
 818         TOSERVER_REMOVED_SOUNDS = 0x3a,
 819         /*
 820                 u16 command
 821                 u16 len
 822                 s32[len] sound_id
 823         */
 824
 825         TOSERVER_NODEMETA_FIELDS = 0x3b,
 826         /*
 827                 u16 command
 828                 v3s16 p
 829                 u16 len
 830                 u8[len] form name (reserved for future use)
 831                 u16 number of fields
 832                 for each field:
 833                         u16 len
 834                         u8[len] field name
 835                         u32 len
 836                         u8[len] field value
 837         */
 838
 839         TOSERVER_INVENTORY_FIELDS = 0x3c,
 840         /*
 841                 u16 command
 842                 u16 len
 843                 u8[len] form name (reserved for future use)
 844                 u16 number of fields
 845                 for each field:
 846                         u16 len
 847                         u8[len] field name
 848                         u32 len
 849                         u8[len] field value
 850         */
 851
 852         TOSERVER_REQUEST_MEDIA = 0x40,
 853         /*
 854                 u16 command
 855                 u16 number of files requested
 856                 for each file {
 857                         u16 length of name
 858                         string name
 859                 }
 860          */
 861
 862         TOSERVER_RECEIVED_MEDIA = 0x41,
 863         /*
 864                 u16 command
 865         */
 866
 867         TOSERVER_BREATH = 0x42,
 868         /*
 869                 u16 command
 870                 u16 breath
 871         */
 872
 873         TOSERVER_CLIENT_READY = 0x43,
 874         /*
 875                 u8 major
 876                 u8 minor
 877                 u8 patch
 878                 u8 reserved
 879                 u16 len
 880                 u8[len] full_version_string
 881         */
 882
 883         TOSERVER_FIRST_SRP = 0x50,
 884         /*
 885                 Belonging to AUTH_MECHANISM_FIRST_SRP.
 886
 887                 std::string srp salt
 888                 std::string srp verification key
 889                 u8 is_empty (=1 if password is empty, 0 otherwise)
 890         */
 891
 892         TOSERVER_SRP_BYTES_A = 0x51,
 893         /*
 894                 Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP,
 895                         depending on current_login_based_on.
 896
 897                 std::string bytes_A
 898                 u8 current_login_based_on : on which version of the password's
 899                                             hash this login is based on (0 legacy hash,
 900                                             or 1 directly the password)
 901         */
 902
 903         TOSERVER_SRP_BYTES_M = 0x52,
 904         /*
 905                 Belonging to AUTH_MECHANISM_LEGACY_PASSWORD and AUTH_MECHANISM_SRP.
 906
 907                 std::string bytes_M
 908         */
 909
 910         TOSERVER_NUM_MSG_TYPES = 0x53,
 911 };
 912
 913 enum AuthMechanism
 914 {
 915         // reserved
 916         AUTH_MECHANISM_NONE = 0,
 917
 918         // SRP based on the legacy hash
 919         AUTH_MECHANISM_LEGACY_PASSWORD = 1 << 0,
 920
 921         // SRP based on the srp verification key
 922         AUTH_MECHANISM_SRP = 1 << 1,
 923
 924         // Establishes a srp verification key, for first login and password changing
 925         AUTH_MECHANISM_FIRST_SRP = 1 << 2,
 926 };
 927
 928 enum AccessDeniedCode {
 929         SERVER_ACCESSDENIED_WRONG_PASSWORD,
 930         SERVER_ACCESSDENIED_UNEXPECTED_DATA,
 931         SERVER_ACCESSDENIED_SINGLEPLAYER,
 932         SERVER_ACCESSDENIED_WRONG_VERSION,
 933         SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME,
 934         SERVER_ACCESSDENIED_WRONG_NAME,
 935         SERVER_ACCESSDENIED_TOO_MANY_USERS,
 936         SERVER_ACCESSDENIED_EMPTY_PASSWORD,
 937         SERVER_ACCESSDENIED_ALREADY_CONNECTED,
 938         SERVER_ACCESSDENIED_SERVER_FAIL,
 939         SERVER_ACCESSDENIED_CUSTOM_STRING,
 940         SERVER_ACCESSDENIED_MAX,
 941 };
 942
 943 enum NetProtoCompressionMode {
 944         NETPROTO_COMPRESSION_NONE = 0,
 945 };
 946
 947 const static std::string accessDeniedStrings[SERVER_ACCESSDENIED_MAX] = {
 948         "Invalid password",
 949         "Your client sent something the server didn't expect.  Try reconnecting or updating your client",
 950         "The server is running in simple singleplayer mode.  You cannot connect.",
 951         "Your client's version is not supported.\nPlease contact server administrator.",
 952         "Player name contains disallowed characters.",
 953         "Player name not allowed.",
 954         "Too many users.",
 955         "Empty passwords are disallowed.  Set a password and try again.",
 956         "Another client is connected with this name.  If your client closed unexpectedly, try again in a minute.",
 957         "Server authention failed.  This is likely a server error."
 958         "",
 959 };
 960
 961 #endif