advtrains_luaautomation/textures/atlatc_oppanel.png

/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef NETWORKPROTOCOL_HEADER
#define NETWORKPROTOCOL_HEADER
#include "util/string.h"

/*
	changes by PROTOCOL_VERSION:

	PROTOCOL_VERSION 3:
		Base for writing changes here
	PROTOCOL_VERSION 4:
		Add TOCLIENT_MEDIA
		Add TOCLIENT_TOOLDEF
		Add TOCLIENT_NODEDEF
		Add TOCLIENT_CRAFTITEMDEF
		Add TOSERVER_INTERACT
		Obsolete TOSERVER_CLICK_ACTIVEOBJECT
		Obsolete TOSERVER_GROUND_ACTION
	PROTOCOL_VERSION 5:
		Make players to be handled mostly as ActiveObjects
	PROTOCOL_VERSION 6:
		Only non-cached textures are sent
	PROTOCOL_VERSION 7:
		Add TOCLIENT_ITEMDEF
		Obsolete TOCLIENT_TOOLDEF
		Obsolete TOCLIENT_CRAFTITEMDEF
		Compress the contents of TOCLIENT_ITEMDEF and TOCLIENT_NODEDEF
	PROTOCOL_VERSION 8:
		Digging based on item groups
		Many things
	PROTOCOL_VERSION 9:
		ContentFeatures and NodeDefManager use a different serialization
		    format; better for future version cross-compatibility
		Many things
	PROTOCOL_VERSION 10:
		TOCLIENT_PRIVILEGES
		Version raised to force 'fly' and 'fast' privileges into effect.
		Node metadata change (came in later; somewhat incompatible)
	PROTOCOL_VERSION 11:
		TileDef in ContentFeatures
		Nodebox drawtype
		(some dev snapshot)
		TOCLIENT_INVENTORY_FORMSPEC
		(0.4.0, 0.4.1)
	PROTOCOL_VERSION 12:
		TOSERVER_INVENTORY_FIELDS
		16-bit node ids
		TOCLIENT_DETACHED_INVENTORY
	PROTOCOL_VERSION 13:
		InventoryList field "Width" (deserialization fails with old versions)
	PROTOCOL_VERSION 14:
		Added transfer of player pressed keys to the server
		Added new messages for mesh and bone animation, as well as attachments
		GENERIC_CMD_SET_ANIMATION
		GENERIC_CMD_SET_BONE_POSITION
		GENERIC_CMD_SET_ATTACHMENT
	PROTOCOL_VERSION 15:
		Serialization format changes
	PROTOCOL_VERSION 16:
		TOCLIENT_SHOW_FORMSPEC
	PROTOCOL_VERSION 17:
		Serialization format change: include backface_culling flag in TileDef
		Added rightclickable field in nodedef
		TOCLIENT_SPAWN_PARTICLE
		TOCLIENT_ADD_PARTICLESPAWNER
		TOCLIENT_DELETE_PARTICLESPAWNER
	PROTOCOL_VERSION 18:
		damageGroups added to ToolCapabilities
		sound_place added to ItemDefinition
	PROTOCOL_VERSION 19:
		GENERIC_CMD_SET_PHYSICS_OVERRIDE
	PROTOCOL_VERSION 20:
		TOCLIENT_HUDADD
		TOCLIENT_HUDRM
		TOCLIENT_HUDCHANGE
		TOCLIENT_HUD_SET_FLAGS
	PROTOCOL_VERSION 21:
		TOCLIENT_BREATH
		TOSERVER_BREATH
		range added to ItemDefinition
		drowning, leveled and liquid_range added to ContentFeatures
		stepheight and collideWithObjects added to object properties
		version, heat and humidity transfer in MapBock
		automatic_face_movement_dir and automatic_face_movement_dir_offset
			added to object properties
	PROTOCOL_VERSION 22:
		add swap_node
	PROTOCOL_VERSION 23:
		TOSERVER_CLIENT_READY
	PROTOCOL_VERSION 24:
		ContentFeatures version 7
		ContentFeatures: change number of special tiles to 6 (CF_SPECIAL_COUNT)
	PROTOCOL_VERSION 25:
		Rename TOCLIENT_ACCESS_DENIED to TOCLIENT_ACCESS_DENIED_LEGAGY
		Rename TOCLIENT_DELETE_PARTICLESPAWNER to
			TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY
		Rename TOSERVER_PASSWORD to TOSERVER_PASSWORD_LEGACY
		Rename TOSERVER_INIT to TOSERVER_INIT_LEGACY
		Rename TOCLIENT_INIT to TOCLIENT_INIT_LEGACY
		Add TOCLIENT_ACCESS_DENIED new opcode (0x0A), using error codes
			for standard error, keeping customisation possible. This
			permit translation
		Add TOCLIENT_DELETE_PARTICLESPAWNER (0x53), fixing the u16 read and
			reading u32
		Add new opcode TOSERVER_INIT for client presentation to server
		Add new opcodes TOSERVER_FIRST_SRP, TOSERVER_SRP_BYTES_A,
			TOSERVER_SRP_BYTES_M, TOCLIENT_SRP_BYTES_S_B
			for the three supported auth mechanisms around srp
		Add new opcodes TOCLIENT_ACCEPT_SUDO_MODE and TOCLIENT_DENY_SUDO_MODE
			for sudo mode handling (auth mech generic way of changing password).
		Add TOCLIENT_HELLO for presenting server to client after client
			presentation
		Add TOCLIENT_AUTH_ACCEPT to accept connection from client
		Rename GENERIC_CMD_SET_ATTACHMENT to GENERIC_CMD_ATTACH_TO
	PROTOCOL_VERSION 26:
		Add TileDef tileable_horizontal, tileable_vertical flags
*/

#define LATEST_PROTOCOL_VERSION 26

// Server's supported network protocol range
#define SERVER_PROTOCOL_VERSION_MIN 13
#define SERVER_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION

// Client's supported network protocol range
#define CLIENT_PROTOCOL_VERSION_MIN 13
#define CLIENT_PROTOCOL_VERSION_MAX LATEST_PROTOCOL_VERSION

// Constant that differentiates the protocol from random data and other protocols
#define PROTOCOL_ID 0x4f457403

#define PASSWORD_SIZE 28       // Maximum password length. Allows for
                               // base64-encoded SHA-1 (27+\0).

#define FORMSPEC_API_VERSION 1
#define FORMSPEC_VERSION_STRING "formspec_version[" TOSTRING(FORMSPEC_API_VERSION) "]"

#define TEXTURENAME_ALLOWED_CHARS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.-"

enum ToClientCommand
{
	TOCLIENT_HELLO = 0x02,
	/*
		Sent after TOSERVER_INIT.

		u8 deployed serialisation version
		u16 deployed network compression mode
		u16 deployed protocol version
		u32 supported auth methods
		std::string username that should be used for legacy hash (for proper casing)
	*/
	TOCLIENT_AUTH_ACCEPT = 0x03,
	/*
		Message from server to accept auth.

		v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
		u64 map seed
		f1000 recommended send interval
		u32 : supported auth methods for sudo mode
		      (where the user can change their password)
	*/
	TOCLIENT_ACCEPT_SUDO_MODE = 0x04,
	/*
		Sent to client to show it is in sudo mode now.
	*/
	TOCLIENT_DENY_SUDO_MODE = 0x05,
	/*
		Signals client that sudo mode auth failed.
	*/
	TOCLIENT_INIT_LEGACY = 0x10,
	/*
		Server's reply to TOSERVER_INIT.
		Sent second after connected.

		[0] u16 TOSERVER_INIT
		[2] u8 deployed version
		[3] v3s16 player's position + v3f(0,BS/2,0) floatToInt'd
		[12] u64 map seed (new as of 2011-02-27)
		[20] f1000 recommended send interval (in seconds) (new as of 14)

		NOTE: The position in here is deprecated; position is
		      explicitly sent afterwards
	*/
	TOCLIENT_ACCESS_DENIED = 0x0A,
	/*
		u8 reason
		std::string custom reason (if needed, otherwise "")
		u8 (bool) reconnect
	*/
	TOCLIENT_BLOCKDATA = 0x20, //TODO: Multiple blocks
	TOCLIENT_ADDNODE = 0x21,
	/*
		v3s16 position
		serialized mapnode
		u8 keep_metadata // Added in protocol version 22
	*/
	TOCLIENT_REMOVENODE = 0x22,

	TOCLIENT_PLAYERPOS = 0x23, // Obsolete
	/*
		[0] u16 command
		// Followed by an arbitary number of these:
		// Number is determined from packet length.
		[N] u16 peer_id
		[N+2] v3s32 position*100
		[N+2+12] v3s32 speed*100
		[N+2+12+12] s32 pitch*100
		[N+2+12+12+4] s32 yaw*100
	*/

	TOCLIENT_PLAYERINFO = 0x24, // Obsolete
	/*
		[0] u16 command
		// Followed by an arbitary number of these:
		// Number is determined from packet length.
		[N] u16 peer_id
		[N] char[20] name
	*/

	TOCLIENT_OPT_BLOCK_NOT_FOUND = 0x25, // Obsolete

	TOCLIENT_SECTORMETA = 0x26, // Obsolete
	/*
		[0] u16 command
		[2] u8 sector count
		[3...] v2s16 pos + sector metadata
	*/

	TOCLIENT_INVENTORY = 0x27,
	/*
		[0] u16 command
		[2] serialized inventory
	*/

	TOCLIENT_OBJECTDATA = 0x28, // Obsolete
	/*
		Sent as unreliable.

		u16 number of player positions
		for each player:
			u16 peer_id
			v3s32 position*100
			v3s32 speed*100
			s32 pitch*100
			s32 yaw*100
		u16 count of blocks
		for each block:
			v3s16 blockpos
			block objects
	*/

	TOCLIENT_TIME_OF_DAY = 0x29,
	/*
		u16 time (0-23999)
		Added in a later version:
		f1000 time_speed
	*/

	// (oops, there is some gap here)

	TOCLIENT_CHAT_MESSAGE = 0x30,
	/*
		u16 length
		wstring message
	*/

	TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD = 0x31,
	/*
		u16 count of removed objects
		for all removed objects {
			u16 id
		}
		u16 count of added objects
		for all added objects {
			u16 id
			u8 type
			u32 initialization data length
			string initialization data
		}
	*/
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