3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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.
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.
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.
22 #include "util/string.h"
25 changes by PROTOCOL_VERSION:
28 Base for writing changes here
33 Add TOCLIENT_CRAFTITEMDEF
35 Obsolete TOSERVER_CLICK_ACTIVEOBJECT
36 Obsolete TOSERVER_GROUND_ACTION
38 Make players to be handled mostly as ActiveObjects
40 Only non-cached textures are sent
43 Obsolete TOCLIENT_TOOLDEF
44 Obsolete TOCLIENT_CRAFTITEMDEF
45 Compress the contents of TOCLIENT_ITEMDEF and TOCLIENT_NODEDEF
47 Digging based on item groups
50 ContentFeatures and NodeDefManager use a different serialization
51 format; better for future version cross-compatibility
53 Obsolete TOCLIENT_PLAYERITEM
56 Version raised to force 'fly' and 'fast' privileges into effect.
57 Node metadata change (came in later; somewhat incompatible)
59 TileDef in ContentFeatures
62 TOCLIENT_INVENTORY_FORMSPEC
65 TOSERVER_INVENTORY_FIELDS
67 TOCLIENT_DETACHED_INVENTORY
69 InventoryList field "Width" (deserialization fails with old versions)
71 Added transfer of player pressed keys to the server
72 Added new messages for mesh and bone animation, as well as attachments
73 GENERIC_CMD_SET_ANIMATION
74 GENERIC_CMD_SET_BONE_POSITION
75 GENERIC_CMD_SET_ATTACHMENT
77 Serialization format changes
79 TOCLIENT_SHOW_FORMSPEC
81 Serialization format change: include backface_culling flag in TileDef
82 Added rightclickable field in nodedef
83 TOCLIENT_SPAWN_PARTICLE
84 TOCLIENT_ADD_PARTICLESPAWNER
85 TOCLIENT_DELETE_PARTICLESPAWNER
87 damageGroups added to ToolCapabilities
88 sound_place added to ItemDefinition
90 GENERIC_CMD_SET_PHYSICS_OVERRIDE
95 TOCLIENT_HUD_SET_FLAGS
99 range added to ItemDefinition
100 drowning, leveled and liquid_range added to ContentFeatures
101 stepheight and collideWithObjects added to object properties
102 version, heat and humidity transfer in MapBock
103 automatic_face_movement_dir and automatic_face_movement_dir_offset
104 added to object properties
108 Obsolete TOSERVER_RECEIVED_MEDIA
109 Server: Stop using TOSERVER_CLIENT_READY
111 ContentFeatures version 7
112 ContentFeatures: change number of special tiles to 6 (CF_SPECIAL_COUNT)
114 Rename TOCLIENT_ACCESS_DENIED to TOCLIENT_ACCESS_DENIED_LEGAGY
115 Rename TOCLIENT_DELETE_PARTICLESPAWNER to
116 TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY
117 Rename TOSERVER_PASSWORD to TOSERVER_PASSWORD_LEGACY
118 Rename TOSERVER_INIT to TOSERVER_INIT_LEGACY
119 Rename TOCLIENT_INIT to TOCLIENT_INIT_LEGACY
120 Add TOCLIENT_ACCESS_DENIED new opcode (0x0A), using error codes
121 for standard error, keeping customisation possible. This
123 Add TOCLIENT_DELETE_PARTICLESPAWNER (0x53), fixing the u16 read and
125 Add new opcode TOSERVER_INIT for client presentation to server
126 Add new opcodes TOSERVER_FIRST_SRP, TOSERVER_SRP_BYTES_A,
127 TOSERVER_SRP_BYTES_M, TOCLIENT_SRP_BYTES_S_B
128 for the three supported auth mechanisms around srp
129 Add new opcodes TOCLIENT_ACCEPT_SUDO_MODE and TOCLIENT_DENY_SUDO_MODE
130 for sudo mode handling (auth mech generic way of changing password).
131 Add TOCLIENT_HELLO for presenting server to client after client
133 Add TOCLIENT_AUTH_ACCEPT to accept connection from client
134 Rename GENERIC_CMD_SET_ATTACHMENT to GENERIC_CMD_ATTACH_TO
136 Add TileDef tileable_horizontal, tileable_vertical flags
138 backface_culling: backwards compatibility for playing with
139 newer client on pre-27 servers.
140 Add nodedef v3 - connected nodeboxes
144 Server doesn't accept TOSERVER_BREATH anymore
145 serialization of TileAnimation params changed
147 Removed client-sided chat perdiction
149 New ContentFeatures serialization version
150 Add node and tile color and palette
151 Fix plantlike visual_scale being applied squared and add compatibility
152 with pre-30 clients by sending sqrt(visual_scale)
155 Stop sending TOSERVER_CLIENT_READY
159 Add TOCLIENT_UPDATE_PLAYER_LIST and send the player list to the client,
160 instead of guessing based on the active object list.
164 Rename TOCLIENT_CHAT_MESSAGE to TOCLIENT_CHAT_MESSAGE_OLD (0x30)
165 Add TOCLIENT_CHAT_MESSAGE (0x2F)
166 This chat message is a signalisation message containing various
170 * type (RAW, NORMAL, ANNOUNCE, SYSTEM)
172 Add TOCLIENT_CSM_RESTRICTION_FLAGS to define which CSM features should be
174 Add settable player collisionbox. Breaks compatibility with older
175 clients as a 1-node vertical offset has been removed from player's
177 Add settable player stepheight using existing object property.
178 Breaks compatibility with older clients.
180 Backwards compatibility drop
181 Add 'can_zoom' to player object properties
182 Add glow to object properties
183 Change TileDef serialization format.
184 Add world-aligned tiles.
186 Raise ObjectProperties version to 3 for removing 'can_zoom' and adding
189 Add disconnected nodeboxes
190 Add TOCLIENT_FORMSPEC_PREPEND
192 Redo detached inventory sending
193 Add TOCLIENT_NODEMETA_CHANGED
194 New network float format
195 ContentFeatures version 13
196 Add full Euler rotations instead of just yaw
197 Add TOCLIENT_PLAYER_SPEED
199 Incremental inventory sending mode
200 Unknown inventory serialization fields no longer throw an error
201 Mod-specific formspec version
202 Player FOV override API
205 #define LATEST_PROTOCOL_VERSION 38
206 #define LATEST_PROTOCOL_VERSION_STRING TOSTRING(LATEST_PROTOCOL_VERSION)
208 // Server's supported network protocol range
209 #define SERVER_PROTOCOL_VERSION_MIN 37
210 #define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
212 // Client's supported network protocol range
213 // The minimal version depends on whether
214 // send_pre_v25_init is enabled or not
215 #define CLIENT_PROTOCOL_VERSION_MIN 37
216 #define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION
218 // Constant that differentiates the protocol from random data and other protocols
219 #define PROTOCOL_ID 0x4f457403
221 #define PASSWORD_SIZE 28 // Maximum password length. Allows for
222 // base64-encoded SHA-1 (27+\0).
225 Changes by FORMSPEC_API_VERSION:
230 Forced real coordinates
231 background[]: 9-slice scaling parameters
233 #define FORMSPEC_API_VERSION 2
235 #define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"
237 typedef u16 session_t;
241 TOCLIENT_HELLO = 0x02,
243 Sent after TOSERVER_INIT.
245 u8 deployed serialisation version
246 u16 deployed network compression mode
247 u16 deployed protocol version
248 u32 supported auth methods
249 std::string username that should be used for legacy hash (for proper casing)
251 TOCLIENT_AUTH_ACCEPT = 0x03,
253 Message from server to accept auth.
255 v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
257 f1000 recommended send interval
258 u32 : supported auth methods for sudo mode
259 (where the user can change their password)
261 TOCLIENT_ACCEPT_SUDO_MODE = 0x04,
263 Sent to client to show it is in sudo mode now.
265 TOCLIENT_DENY_SUDO_MODE = 0x05,
267 Signals client that sudo mode auth failed.
269 TOCLIENT_ACCESS_DENIED = 0x0A,
272 std::string custom reason (if needed, otherwise "")
276 TOCLIENT_INIT_LEGACY = 0x10, // Obsolete
278 TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
279 TOCLIENT_ADDNODE = 0x21,
283 u8 keep_metadata // Added in protocol version 22
285 TOCLIENT_REMOVENODE = 0x22,
287 TOCLIENT_PLAYERPOS = 0x23, // Obsolete
288 TOCLIENT_PLAYERINFO = 0x24, // Obsolete
289 TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete
290 TOCLIENT_SECTORMETA = 0x26, // Obsolete
292 TOCLIENT_INVENTORY = 0x27,
295 [2] serialized inventory
298 TOCLIENT_OBJECTDATA = 0x28, // Obsolete
300 TOCLIENT_TIME_OF_DAY = 0x29,
303 Added in a later version:
307 TOCLIENT_CSM_RESTRICTION_FLAGS = 0x2A,
309 u32 CSMRestrictionFlags byteflag
312 TOCLIENT_PLAYER_SPEED = 0x2B,
317 // (oops, there is some gap here)
319 TOCLIENT_CHAT_MESSAGE = 0x2F,
323 u16 sendername length
329 TOCLIENT_CHAT_MESSAGE_OLD = 0x30, // Obsolete
331 TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
333 u16 count of removed objects
334 for all removed objects {
337 u16 count of added objects
338 for all added objects {
341 u32 initialization data length
342 string initialization data
346 TOCLIENT_ACTIVE_OBJECT_MESSAGES = 0x32,
361 TOCLIENT_MOVE_PLAYER = 0x34,
363 v3f1000 player position
368 TOCLIENT_ACCESS_DENIED_LEGACY = 0x35,
376 Sends an FOV override/multiplier to client.
382 TOCLIENT_DEATHSCREEN = 0x37,
384 u8 bool set camera point target
385 v3f1000 camera point target (to point the death cause or whatever)
388 TOCLIENT_MEDIA = 0x38,
390 u16 total number of texture bunches
391 u16 index of this bunch
392 u32 number of files in this bunch
399 u16 length of remote media server url (if applicable)
403 TOCLIENT_TOOLDEF = 0x39,
405 u32 length of the next item
406 serialized ToolDefManager
409 TOCLIENT_NODEDEF = 0x3a,
411 u32 length of the next item
412 serialized NodeDefManager
415 TOCLIENT_CRAFTITEMDEF = 0x3b,
417 u32 length of the next item
418 serialized CraftiItemDefManager
421 TOCLIENT_ANNOUNCE_MEDIA = 0x3c,
428 u16 length of sha1_digest
433 TOCLIENT_ITEMDEF = 0x3d,
435 u32 length of next item
436 serialized ItemDefManager
439 TOCLIENT_PLAY_SOUND = 0x3f,
445 u8 type (0=local, 1=positional, 2=object)
446 s32[3] pos_nodes*10000
451 TOCLIENT_STOP_SOUND = 0x40,
456 TOCLIENT_PRIVILEGES = 0x41,
458 u16 number of privileges
464 TOCLIENT_INVENTORY_FORMSPEC = 0x42,
470 TOCLIENT_DETACHED_INVENTORY = 0x43,
475 [2] serialized inventory
478 TOCLIENT_SHOW_FORMSPEC = 0x44,
487 TOCLIENT_MOVEMENT = 0x45,
489 f1000 movement_acceleration_default
490 f1000 movement_acceleration_air
491 f1000 movement_acceleration_fast
492 f1000 movement_speed_walk
493 f1000 movement_speed_crouch
494 f1000 movement_speed_fast
495 f1000 movement_speed_climb
496 f1000 movement_speed_jump
497 f1000 movement_liquid_fluidity
498 f1000 movement_liquid_fluidity_smooth
499 f1000 movement_liquid_sink
500 f1000 movement_gravity
503 TOCLIENT_SPAWN_PARTICLE = 0x46,
510 u8 bool collisiondetection
515 TileAnimation animation
520 TOCLIENT_ADD_PARTICLESPAWNER = 0x47,
534 u8 bool collisiondetection
540 TileAnimation animation
545 TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY = 0x48, // Obsolete
547 TOCLIENT_HUDADD = 0x49,
566 TOCLIENT_HUDRM = 0x4a,
571 TOCLIENT_HUDCHANGE = 0x4b,
581 TOCLIENT_HUD_SET_FLAGS = 0x4c,
587 TOCLIENT_HUD_SET_PARAM = 0x4d,
594 TOCLIENT_BREATH = 0x4e,
599 TOCLIENT_SET_SKY = 0x4f,
611 TOCLIENT_OVERRIDE_DAY_NIGHT_RATIO = 0x50,
613 u8 do_override (boolean)
614 u16 day-night ratio 0...65535
617 TOCLIENT_LOCAL_PLAYER_ANIMATIONS = 0x51,
626 TOCLIENT_EYE_OFFSET = 0x52,
632 TOCLIENT_DELETE_PARTICLESPAWNER = 0x53,
637 TOCLIENT_CLOUD_PARAMS = 0x54,
640 u8[4] color_diffuse (ARGB)
641 u8[4] color_ambient (ARGB)
647 TOCLIENT_FADE_SOUND = 0x55,
653 TOCLIENT_UPDATE_PLAYER_LIST = 0x56,
656 u16 number of players
662 TOCLIENT_MODCHANNEL_MSG = 0x57,
664 u16 channel name length
665 std::string channel name
666 u16 channel name sender
667 std::string channel name
672 TOCLIENT_MODCHANNEL_SIGNAL = 0x58,
675 u16 channel name length
676 std::string channel name
679 TOCLIENT_NODEMETA_CHANGED = 0x59,
681 serialized and compressed node metadata
684 TOCLIENT_SRP_BYTES_S_B = 0x60,
686 Belonging to AUTH_MECHANISM_SRP.
692 TOCLIENT_FORMSPEC_PREPEND = 0x61,
698 TOCLIENT_NUM_MSG_TYPES = 0x62,
703 TOSERVER_INIT = 0x02,
705 Sent first after connected.
707 u8 serialisation version (=SER_FMT_VER_HIGHEST_READ)
708 u16 supported network compression modes
709 u16 minimum supported network protocol version
710 u16 maximum supported network protocol version
711 std::string player name
714 TOSERVER_INIT_LEGACY = 0x10, // Obsolete
716 TOSERVER_INIT2 = 0x11,
718 Sent as an ACK for TOCLIENT_INIT.
719 After this, the server can send data.
721 [0] u16 TOSERVER_INIT2
724 TOSERVER_MODCHANNEL_JOIN = 0x17,
726 u16 channel name length
727 std::string channel name
730 TOSERVER_MODCHANNEL_LEAVE = 0x18,
732 u16 channel name length
733 std::string channel name
736 TOSERVER_MODCHANNEL_MSG = 0x19,
738 u16 channel name length
739 std::string channel name
744 TOSERVER_GETBLOCK = 0x20, // Obsolete
745 TOSERVER_ADDNODE = 0x21, // Obsolete
746 TOSERVER_REMOVENODE = 0x22, // Obsolete
748 TOSERVER_PLAYERPOS = 0x23,
751 [2] v3s32 position*100
752 [2+12] v3s32 speed*100
753 [2+12+12] s32 pitch*100
754 [2+12+12+4] s32 yaw*100
755 [2+12+12+4+4] u32 keyPressed
756 [2+12+12+4+4+1] u8 fov*80
757 [2+12+12+4+4+4+1] u8 ceil(wanted_range / MAP_BLOCKSIZE)
760 TOSERVER_GOTBLOCKS = 0x24,
769 TOSERVER_DELETEDBLOCKS = 0x25,
778 TOSERVER_ADDNODE_FROM_INVENTORY = 0x26, // Obsolete
779 TOSERVER_CLICK_OBJECT = 0x27, // Obsolete
780 TOSERVER_GROUND_ACTION = 0x28, // Obsolete
781 TOSERVER_RELEASE = 0x29, // Obsolete
782 TOSERVER_SIGNTEXT = 0x30, // Obsolete
784 TOSERVER_INVENTORY_ACTION = 0x31,
786 See InventoryAction in inventorymanager.h
789 TOSERVER_CHAT_MESSAGE = 0x32,
795 TOSERVER_SIGNNODETEXT = 0x33, // Obsolete
796 TOSERVER_CLICK_ACTIVEOBJECT = 0x34, // Obsolete
798 TOSERVER_DAMAGE = 0x35,
803 TOSERVER_PASSWORD_LEGACY = 0x36, // Obsolete
805 TOSERVER_PLAYERITEM = 0x37,
807 Sent to change selected item.
809 [0] u16 TOSERVER_PLAYERITEM
813 TOSERVER_RESPAWN = 0x38,
818 TOSERVER_INTERACT = 0x39,
823 [5] u32 length of the next item
824 [9] serialized PointedThing
826 0: start digging (from undersurface) or use
827 1: stop digging (all parameters ignored)
829 3: place block or item (to abovesurface)
833 TOSERVER_REMOVED_SOUNDS = 0x3a,
839 TOSERVER_NODEMETA_FIELDS = 0x3b,
843 u8[len] form name (reserved for future use)
852 TOSERVER_INVENTORY_FIELDS = 0x3c,
855 u8[len] form name (reserved for future use)
864 TOSERVER_REQUEST_MEDIA = 0x40,
866 u16 number of files requested
873 TOSERVER_RECEIVED_MEDIA = 0x41, // Obsolete
874 TOSERVER_BREATH = 0x42, // Obsolete
876 TOSERVER_CLIENT_READY = 0x43,
883 u8[len] full_version_string
886 TOSERVER_FIRST_SRP = 0x50,
888 Belonging to AUTH_MECHANISM_FIRST_SRP.
891 std::string srp verification key
892 u8 is_empty (=1 if password is empty, 0 otherwise)
895 TOSERVER_SRP_BYTES_A = 0x51,
897 Belonging to AUTH_MECHANISM_SRP,
898 depending on current_login_based_on.
901 u8 current_login_based_on : on which version of the password's
902 hash this login is based on (0 legacy hash,
903 or 1 directly the password)
906 TOSERVER_SRP_BYTES_M = 0x52,
908 Belonging to AUTH_MECHANISM_SRP.
913 TOSERVER_NUM_MSG_TYPES = 0x53,
919 AUTH_MECHANISM_NONE = 0,
921 // SRP based on the legacy hash
922 AUTH_MECHANISM_LEGACY_PASSWORD = 1 << 0,
924 // SRP based on the srp verification key
925 AUTH_MECHANISM_SRP = 1 << 1,
927 // Establishes a srp verification key, for first login and password changing
928 AUTH_MECHANISM_FIRST_SRP = 1 << 2,
931 enum AccessDeniedCode {
932 SERVER_ACCESSDENIED_WRONG_PASSWORD,
933 SERVER_ACCESSDENIED_UNEXPECTED_DATA,
934 SERVER_ACCESSDENIED_SINGLEPLAYER,
935 SERVER_ACCESSDENIED_WRONG_VERSION,
936 SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME,
937 SERVER_ACCESSDENIED_WRONG_NAME,
938 SERVER_ACCESSDENIED_TOO_MANY_USERS,
939 SERVER_ACCESSDENIED_EMPTY_PASSWORD,
940 SERVER_ACCESSDENIED_ALREADY_CONNECTED,
941 SERVER_ACCESSDENIED_SERVER_FAIL,
942 SERVER_ACCESSDENIED_CUSTOM_STRING,
943 SERVER_ACCESSDENIED_SHUTDOWN,
944 SERVER_ACCESSDENIED_CRASH,
945 SERVER_ACCESSDENIED_MAX,
948 enum NetProtoCompressionMode {
949 NETPROTO_COMPRESSION_NONE = 0,
952 const static std::string accessDeniedStrings[SERVER_ACCESSDENIED_MAX] = {
954 "Your client sent something the server didn't expect. Try reconnecting or updating your client",
955 "The server is running in simple singleplayer mode. You cannot connect.",
956 "Your client's version is not supported.\nPlease contact server administrator.",
957 "Player name contains disallowed characters.",
958 "Player name not allowed.",
960 "Empty passwords are disallowed. Set a password and try again.",
961 "Another client is connected with this name. If your client closed unexpectedly, try again in a minute.",
962 "Server authentication failed. This is likely a server error.",
964 "Server shutting down.",
965 "This server has experienced an internal error. You will now be disconnected."
968 enum PlayerListModifer: u8
975 enum CSMRestrictionFlags : u64 {
976 CSM_RF_NONE = 0x00000000,
977 // Until server-sent CSM and verifying of builtin are complete,
978 // 'CSM_RF_LOAD_CLIENT_MODS' also disables loading 'builtin'.
979 // When those are complete, this should return to only being a restriction on the
980 // loading of client mods.
981 CSM_RF_LOAD_CLIENT_MODS = 0x00000001, // Don't load client-provided mods or 'builtin'
982 CSM_RF_CHAT_MESSAGES = 0x00000002, // Disable chat message sending from CSM
983 CSM_RF_READ_ITEMDEFS = 0x00000004, // Disable itemdef lookups
984 CSM_RF_READ_NODEDEFS = 0x00000008, // Disable nodedef lookups
985 CSM_RF_LOOKUP_NODES = 0x00000010, // Limit node lookups
986 CSM_RF_READ_PLAYERINFO = 0x00000020, // Disable player info lookups
987 CSM_RF_ALL = 0xFFFFFFFF,
990 enum InteractAction : u8
992 INTERACT_START_DIGGING, // 0: start digging (from undersurface) or use
993 INTERACT_STOP_DIGGING, // 1: stop digging (all parameters ignored)
994 INTERACT_DIGGING_COMPLETED, // 2: digging completed
995 INTERACT_PLACE, // 3: place block or item (to abovesurface)
996 INTERACT_USE, // 4: use item
997 INTERACT_ACTIVATE // 5: rightclick air ("activate")