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authorkwolekr <kwolekr@minetest.net>2013-12-08 22:13:05 -0500
committerkwolekr <kwolekr@minetest.net>2013-12-08 22:13:05 -0500
commit50b0e9f7a4916044b1938d461c9c4029b30569da (patch)
treeab91f5414e93d368a3023dbdde7cec985e0bc659 /src/script/cpp_api/s_node.cpp
parent206565d9650eeffc86b4223a75203a29bc94cce7 (diff)
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Mapgen Indev: Fix segfault in cave generation due to uninitialized variable
Diffstat (limited to 'src/script/cpp_api/s_node.cpp')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 15:39:14 +0000
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-- minetest.lua
-- Packet dissector for the UDP-based Minetest protocol
-- Copy this to $HOME/.wireshark/plugins/


--
-- Minetest
-- Copyright (C) 2011 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 General Public License as published by
-- the Free Software Foundation; either version 2 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 General Public License for more details.
--
-- You should have received a copy of the GNU 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.
--


-- Wireshark documentation:
-- https://web.archive.org/web/20170711121726/https://www.wireshark.org/docs/wsdg_html_chunked/lua_module_Proto.html
-- https://web.archive.org/web/20170711121844/https://www.wireshark.org/docs/wsdg_html_chunked/lua_module_Tree.html
-- https://web.archive.org/web/20170711121917/https://www.wireshark.org/docs/wsdg_html_chunked/lua_module_Tvb.html


-- Table of Contents:
--   Part 1: Utility functions
--   Part 2: Client command dissectors (TOSERVER_*)
--   Part 3: Server command dissectors (TOCLIENT_*)
--   Part 4: Wrapper protocol subdissectors
--   Part 5: Wrapper protocol main dissector
--   Part 6: Utility functions part 2


-----------------------
-- Part 1            --
-- Utility functions --
-----------------------

-- Creates two ProtoFields to hold a length and variable-length text content
-- lentype must be either "uint16" or "uint32"
function minetest_field_helper(lentype, name, abbr)
	local f_textlen = ProtoField[lentype](name .. "len", abbr .. " (length)", base.DEC)
	local f_text = ProtoField.string(name, abbr)
	return f_textlen, f_text
end




--------------------------------------------
-- Part 2                                 --
-- Client command dissectors (TOSERVER_*) --
--------------------------------------------

minetest_client_commands = {}
minetest_client_obsolete = {}

-- TOSERVER_INIT

do
	local abbr = "minetest.client.init_"

	local f_ser_fmt = ProtoField.uint8(abbr.."ser_version",
		"Maximum serialization format version", base.DEC)
	local f_comp_modes = ProtoField.uint16(abbr.."compression",
		"Supported compression modes", base.DEC, { [0] = "No compression" })
	local f_proto_min = ProtoField.uint16(abbr.."proto_min", "Minimum protocol version", base.DEC)
	local f_proto_max = ProtoField.uint16(abbr.."_proto_max", "Maximum protocol version", base.DEC)
	local f_player_namelen, f_player_name =
		minetest_field_helper("uint16", abbr.."player_name", "Player Name")

	minetest_client_commands[0x02] = {
		"INIT",                            -- Command name
		11,                                -- Minimum message length including code
		{ f_ser_fmt,                       -- List of fields [optional]
		  f_comp_modes,
		  f_proto_min,
		  f_proto_max,
		  f_player_namelen,
		  f_player_name },
		function(buffer, pinfo, tree, t)   -- Dissector function [optional]
			t:add(f_ser_fmt, buffer(2,1))
			t:add(f_comp_modes, buffer(3,2))
			t:add(f_proto_min, buffer(5,2))
			t:add(f_proto_max, buffer(7,2))
			minetest_decode_helper_ascii(buffer, t, "uint16", 9, f_player_namelen, f_player_name)
		end
	}
end

-- TOSERVER_INIT_LEGACY (obsolete)

minetest_client_commands[0x10] = { "INIT_LEGACY", 53 }
minetest_client_obsolete[0x10] = true

-- TOSERVER_INIT2

do
	local f_langlen, f_lang =
		minetest_field_helper("uint16", "minetest.client.init2_language", "Language Code")

	minetest_client_commands[0x11] = {
		"INIT2",
		2,
		{ f_langlen,
		  f_lang },
		function(buffer, pinfo, tree, t)
			minetest_decode_helper_ascii(buffer, t, "uint16", 2, f_langlen, f_lang)
		end
	}
end

-- TOSERVER_MODCHANNEL_JOIN

minetest_client_commands[0x17] = { "MODCHANNEL_JOIN", 2 }

-- TOSERVER_MODCHANNEL_LEAVE

minetest_client_commands[0x18] = { "MODCHANNEL_LEAVE", 2 }

-- TOSERVER_MODCHANNEL_MSG

minetest_client_commands[0x19] = { "MODCHANNEL_MSG", 2 }

-- TOSERVER_GETBLOCK (obsolete)

minetest_client_commands[0x20] = { "GETBLOCK", 2 }
minetest_client_obsolete[0x20] = true

-- TOSERVER_ADDNODE (obsolete)

minetest_client_commands[0x21] = { "ADDNODE", 2 }
minetest_client_obsolete[0x21] = true

-- TOSERVER_REMOVENODE (obsolete)

minetest_client_commands[0x22] = { "REMOVENODE", 2 }
minetest_client_obsolete[0x22] = true

-- TOSERVER_PLAYERPOS

do
	local abbr = "minetest.client.playerpos_"

	local f_x = ProtoField.int32(abbr.."x", "Position X", base.DEC)
	local f_y = ProtoField.int32(abbr.."y", "Position Y", base.DEC)
	local f_z = ProtoField.int32(abbr.."z", "Position Z", base.DEC)
	local f_speed_x = ProtoField.int32(abbr.."speed_x", "Speed X", base.DEC)
	local f_speed_y = ProtoField.int32(abbr.."speed_y", "Speed Y", base.DEC)
	local f_speed_z = ProtoField.int32(abbr.."speed_z", "Speed Z", base.DEC)
	local f_pitch = ProtoField.int32(abbr.."pitch", "Pitch", base.DEC)
	local f_yaw = ProtoField.int32(abbr.."yaw", "Yaw", base.DEC)
	local f_key_pressed = ProtoField.bytes(abbr.."key_pressed", "Pressed keys")
	local f_fov = ProtoField.uint8(abbr.."fov", "FOV", base.DEC)
	local f_wanted_range = ProtoField.uint8(abbr.."wanted_range", "Requested view range", base.DEC)

	minetest_client_commands[0x23] = {
		"PLAYERPOS", 34,
		{ f_x, f_y, f_z, f_speed_x, f_speed_y, f_speed_z, f_pitch, f_yaw,
		  f_key_pressed, f_fov, f_wanted_range },
		function(buffer, pinfo, tree, t)
			t:add(f_x, buffer(2,4))
			t:add(f_y, buffer(6,4))
			t:add(f_z, buffer(10,4))
			t:add(f_speed_x, buffer(14,4))
			t:add(f_speed_y, buffer(18,4))
			t:add(f_speed_z, buffer(22,4))
			t:add(f_pitch, buffer(26,4))
			t:add(f_yaw, buffer(30,4))
			t:add(f_key_pressed, buffer(34,4))
			t:add(f_fov, buffer(38,1))
			t:add(f_wanted_range, buffer(39,1))
		end
	}
end

-- TOSERVER_GOTBLOCKS

do
	local f_count = ProtoField.uint8("minetest.client.gotblocks_count", "Count", base.DEC)
	local f_block = ProtoField.bytes("minetest.client.gotblocks_block", "Block", base.NONE)
	local f_x = ProtoField.int16("minetest.client.gotblocks_x", "Block position X", base.DEC)
	local f_y = ProtoField.int16("minetest.client.gotblocks_y", "Block position Y", base.DEC)
	local f_z = ProtoField.int16("minetest.client.gotblocks_z", "Block position Z", base.DEC)

	minetest_client_commands[0x24] = {
		"GOTBLOCKS", 3,
		{ f_count, f_block, f_x, f_y, f_z },
		function(buffer, pinfo, tree, t)
			t:add(f_count, buffer(2,1))
			local count = buffer(2,1):uint()
			if minetest_check_length(buffer, 3 + 6*count, t) then
				pinfo.cols.info:append(" * " .. count)
				local index
				for index = 0, count - 1 do
					local pos = 3 + 6*index
					local t2 = t:add(f_block, buffer(pos, 6))
					t2:set_text("Block, X: " .. buffer(pos, 2):int()
						.. ", Y: " .. buffer(pos + 2, 2):int()
						.. ", Z: " .. buffer(pos + 4, 2):int())
					t2:add(f_x, buffer(pos, 2))
					t2:add(f_y, buffer(pos + 2, 2))
					t2:add(f_z, buffer(pos + 4, 2))
				end
			end
		end
	}
end

-- TOSERVER_DELETEDBLOCKS

do
	local f_count = ProtoField.uint8("minetest.client.deletedblocks_count", "Count", base.DEC)
	local f_block = ProtoField.bytes("minetest.client.deletedblocks_block", "Block", base.NONE)
	local f_x = ProtoField.int16("minetest.client.deletedblocks_x", "Block position X", base.DEC)
	local f_y = ProtoField.int16("minetest.client.deletedblocks_y", "Block position Y", base.DEC)
	local f_z = ProtoField.int16("minetest.client.deletedblocks_z", "Block position Z", base.DEC)

	minetest_client_commands[0x25] = {
		"DELETEDBLOCKS", 3,
		{ f_count, f_block, f_x, f_y, f_z },
		function(buffer, pinfo, tree, t)
			t:add(f_count, buffer(2,1))
			local count = buffer(2,1):uint()
			if minetest_check_length(buffer, 3 + 6*count, t) then
				pinfo.cols.info:append(" * " .. count)
				local index
				for index = 0, count - 1 do
					local pos = 3 + 6*index
					local t2 = t:add(f_block, buffer(pos, 6))
					t2:set_text("Block, X: " .. buffer(pos, 2):int()
						.. ", Y: " .. buffer(pos + 2, 2):int()
						.. ", Z: " .. buffer(pos + 4, 2):int())
					t2:add(f_x, buffer(pos, 2))
					t2:add(f_y, buffer(pos + 2, 2))
					t2:add(f_z, buffer(pos + 4, 2))
				end
			end
		end
	}
end

-- TOSERVER_ADDNODE_FROM_INVENTORY (obsolete)

minetest_client_commands[0x26] = { "ADDNODE_FROM_INVENTORY", 2 }
minetest_client_obsolete[0x26] = true

-- TOSERVER_CLICK_OBJECT (obsolete)

minetest_client_commands[0x27] = { "CLICK_OBJECT", 2 }
minetest_client_obsolete[0x27] = true

-- TOSERVER_GROUND_ACTION (obsolete)

minetest_client_commands[0x28] = { "GROUND_ACTION", 2 }
minetest_client_obsolete[0x28] = true

-- TOSERVER_RELEASE (obsolete)

minetest_client_commands[0x29] = { "RELEASE", 2 }
minetest_client_obsolete[0x29] = true

-- TOSERVER_SIGNTEXT (obsolete)

minetest_client_commands[0x30] = { "SIGNTEXT", 2 }
minetest_client_obsolete[0x30] = true

-- TOSERVER_INVENTORY_ACTION

do
	local f_action = ProtoField.string("minetest.client.inventory_action", "Action")

	minetest_client_commands[0x31] = {
		"INVENTORY_ACTION", 2,
		{ f_action },
		function(buffer, pinfo, tree, t)
			t:add(f_action, buffer(2, buffer:len() - 2))
		end
	}
end

-- TOSERVER_CHAT_MESSAGE

do
	local f_length = ProtoField.uint16("minetest.client.chat_message_length", "Length", base.DEC)
	local f_message = ProtoField.string("minetest.client.chat_message", "Message")

	minetest_client_commands[0x32] = {
		"CHAT_MESSAGE", 4,
		{ f_length, f_message },
		function(buffer, pinfo, tree, t)
			t:add(f_length, buffer(2,2))
			local textlen = buffer(2,2):uint()
			if minetest_check_length(buffer, 4 + textlen*2, t) then
				t:add(f_message, minetest_convert_utf16(buffer(4, textlen*2), "Converted chat message"))
			end
		end
	}
end

-- TOSERVER_SIGNNODETEXT (obsolete)

minetest_client_commands[0x33] = { "SIGNNODETEXT", 2 }
minetest_client_obsolete[0x33] = true


-- TOSERVER_CLICK_ACTIVEOBJECT (obsolete)

minetest_client_commands[0x34] = { "CLICK_ACTIVEOBJECT", 2 }
minetest_client_obsolete[0x34] = true

-- TOSERVER_DAMAGE

do
	local f_amount = ProtoField.uint8("minetest.client.damage_amount", "Amount", base.DEC)

	minetest_client_commands[0x35] = {
		"DAMAGE", 3,
		{ f_amount },
		function(buffer, pinfo, tree, t)
			t:add(f_amount, buffer(2,1))
		end
	}
end

-- TOSERVER_PASSWORD (obsolete)

minetest_client_commands[0x36] = { "CLICK_ACTIVEOBJECT", 2 }
minetest_client_obsolete[0x36] = true

-- TOSERVER_PLAYERITEM

do
	local f_item = ProtoField.uint16("minetest.client.playeritem_item", "Wielded item")

	minetest_client_commands[0x37] = {
		"PLAYERITEM", 4,
		{ f_item },
		function(buffer, pinfo, tree, t)
			t:add(f_item, buffer(2,2))
		end
	}
end

-- TOSERVER_RESPAWN

minetest_client_commands[0x38] = { "RESPAWN", 2 }

-- TOSERVER_INTERACT

do
	local abbr = "minetest.client.interact_"
	local vs_action = {
		[0] = "Start digging",
		[1] = "Stop digging",
		[2] = "Digging completed",
		[3] = "Place block or item",
		[4] = "Use item",
		[5] = "Activate held item",
	}
	local vs_pointed_type = {
		[0] = "Nothing",
		[1] = "Node",
		[2] = "Object",
	}

	local f_action = ProtoField.uint8(abbr.."action", "Action", base.DEC, vs_action)
	local f_item = ProtoField.uint16(abbr.."item", "Item Index", base.DEC)
	local f_plen = ProtoField.uint32(abbr.."plen", "Length of pointed thing", base.DEC)
	local f_pointed_version = ProtoField.uint8(abbr.."pointed_version",
		"Pointed Thing Version", base.DEC)
	local f_pointed_type = ProtoField.uint8(abbr.."pointed_version",
		"Pointed Thing Type", base.DEC, vs_pointed_type)
	local f_pointed_under_x = ProtoField.int16(abbr.."pointed_under_x",
		"Node position (under surface) X")
	local f_pointed_under_y = ProtoField.int16(abbr.."pointed_under_y",
		"Node position (under surface) Y")
	local f_pointed_under_z = ProtoField.int16(abbr.."pointed_under_z",
		"Node position (under surface) Z")
	local f_pointed_above_x = ProtoField.int16(abbr.."pointed_above_x",
		"Node position (above surface) X")
	local f_pointed_above_y = ProtoField.int16(abbr.."pointed_above_y",
		"Node position (above surface) Y")
	local f_pointed_above_z = ProtoField.int16(abbr.."pointed_above_z",
		"Node position (above surface) Z")
	local f_pointed_object_id = ProtoField.int16(abbr.."pointed_object_id",
		"Object ID")
	-- mising: additional playerpos data just like in TOSERVER_PLAYERPOS

	minetest_client_commands[0x39] = {
		"INTERACT", 11,
		{ f_action,
		  f_item,
		  f_plen,
		  f_pointed_version,
		  f_pointed_type,
		  f_pointed_under_x,
		  f_pointed_under_y,
		  f_pointed_under_z,
		  f_pointed_above_x,
		  f_pointed_above_y,
		  f_pointed_above_z,
		  f_pointed_object_id },
		function(buffer, pinfo, tree, t)
			t:add(f_action, buffer(2,1))
			t:add(f_item, buffer(3,2))
			t:add(f_plen, buffer(5,4))
			local plen = buffer(5,4):uint()
			if minetest_check_length(buffer, 9 + plen, t) then
				t:add(f_pointed_version, buffer(9,1))
				t:add(f_pointed_type, buffer(10,1))
				local ptype = buffer(10,1):uint()
				if ptype == 1 then -- Node
					t:add(f_pointed_under_x, buffer(11,2))
					t:add(f_pointed_under_y, buffer(13,2))
					t:add(f_pointed_under_z, buffer(15,2))
					t:add(f_pointed_above_x, buffer(17,2))
					t:add(f_pointed_above_x, buffer(19,2))
					t:add(f_pointed_above_x, buffer(21,2))
				elseif ptype == 2 then -- Object
					t:add(f_pointed_object_id, buffer(11,2))
				end
			end
		end
	}
end

-- ...

minetest_client_commands[0x3a] = { "REMOVED_SOUNDS", 2 }
minetest_client_commands[0x3b] = { "NODEMETA_FIELDS", 2 }
minetest_client_commands[0x3c] = { "INVENTORY_FIELDS", 2 }
minetest_client_commands[0x40] = { "REQUEST_MEDIA", 2 }
minetest_client_commands[0x41] = { "RECEIVED_MEDIA", 2 }

-- TOSERVER_BREATH (obsolete)

minetest_client_commands[0x42] = { "BREATH", 2 }
minetest_client_obsolete[0x42] = true

-- TOSERVER_CLIENT_READY

do
	local abbr = "minetest.client.client_ready_"
	local f_major = ProtoField.uint8(abbr.."major","Version Major")
	local f_minor = ProtoField.uint8(abbr.."minor","Version Minor")
	local f_patch = ProtoField.uint8(abbr.."patch","Version Patch")
	local f_reserved = ProtoField.uint8(abbr.."reserved","Reserved")
	local f_versionlen, f_version =
		minetest_field_helper("uint16", abbr.."version", "Full Version String")
	local f_formspec_ver = ProtoField.uint16(abbr.."formspec_version",
		"Formspec API version")

	minetest_client_commands[0x43] = {
		"CLIENT_READY",
		8,
		{ f_major, f_minor, f_patch, f_reserved, f_versionlen,
		  f_version, f_formspec_ver },
		function(buffer, pinfo, tree, t)
			t:add(f_major, buffer(2,1))
			t:add(f_minor, buffer(3,1))
			t:add(f_patch, buffer(4,1))
			t:add(f_reserved, buffer(5,1))
			local off = minetest_decode_helper_ascii(buffer, t, "uint16", 6,
				f_versionlen, f_version)
			if off and minetest_check_length(buffer, off + 2, t) then
				t:add(f_formspec_ver, buffer(off,2))
			end
		end
	}
end

-- ...

minetest_client_commands[0x50] = { "FIRST_SRP", 2 }
minetest_client_commands[0x51] = { "SRP_BYTES_A", 2 }
minetest_client_commands[0x52] = { "SRP_BYTES_M", 2 }



--------------------------------------------
-- Part 3                                 --
-- Server command dissectors (TOCLIENT_*) --
--------------------------------------------

minetest_server_commands = {}
minetest_server_obsolete = {}

-- TOCLIENT_HELLO

do
	local abbr = "minetest.server.hello_"

	local f_ser_fmt = ProtoField.uint8(abbr.."ser_version",
		"Deployed serialization format version", base.DEC)
	local f_comp_mode = ProtoField.uint16(abbr.."compression",
		"Deployed compression mode", base.DEC, { [0] = "No compression" })
	local f_proto = ProtoField.uint16(abbr.."proto",
		"Deployed protocol version", base.DEC)
	local f_auth_methods = ProtoField.bytes(abbr.."auth_modes",
		"Supported authentication modes")
	local f_legacy_namelen, f_legacy_name = minetest_field_helper("uint16",
		abbr.."legacy_name", "Legacy player name for hashing")

	minetest_server_commands[0x02] = {
		"HELLO",
		13,
		{ f_ser_fmt, f_comp_mode, f_proto, f_auth_methods,
		  f_legacy_namelen, f_legacy_name },
		function(buffer, pinfo, tree, t)
			t:add(f_ser_fmt, buffer(2,1))
			t:add(f_comp_mode, buffer(3,2))
			t:add(f_proto, buffer(5,2))
			t:add(f_auth_methods, buffer(7,4))
			minetest_decode_helper_ascii(buffer, t, "uint16", 11, f_legacy_namelen, f_legacy_name)
		end
	}
end

-- TOCLIENT_AUTH_ACCEPT

do
	local abbr = "minetest.server.auth_accept_"

	local f_player_x = ProtoField.float(abbr.."player_x", "Player position X")
	local f_player_y = ProtoField.float(abbr.."player_y", "Player position Y")
	local f_player_z = ProtoField.float(abbr.."player_z", "Player position Z")
	local f_map_seed = ProtoField.uint64(abbr.."map_seed", "Map seed")
	local f_send_interval = ProtoField.float(abbr.."send_interval",
		"Recommended send interval")
	local f_sudo_auth_methods = ProtoField.bytes(abbr.."sudo_auth_methods",
		"Supported auth methods for sudo mode")

	minetest_server_commands[0x03] = {
		"AUTH_ACCEPT",
		30,
		{ f_player_x, f_player_y, f_player_z, f_map_seed,
		  f_send_interval, f_sudo_auth_methods },
		function(buffer, pinfo, tree, t)
			t:add(f_player_x, buffer(2,4))
			t:add(f_player_y, buffer(6,4))
			t:add(f_player_z, buffer(10,4))
			t:add(f_map_seed, buffer(14,8))
			t:add(f_send_interval, buffer(22,4))
			t:add(f_sudo_auth_methods, buffer(26,4))
		end
	}
end

-- ...

minetest_server_commands[0x04] = {"ACCEPT_SUDO_MODE", 2}
minetest_server_commands[0x05] = {"DENY_SUDO_MODE", 2}
minetest_server_commands[0x0A] = {"ACCESS_DENIED", 2}

-- TOCLIENT_INIT (obsolete)

minetest_server_commands[0x10] = { "INIT", 2 }
minetest_server_obsolete[0x10] = true

-- TOCLIENT_BLOCKDATA

do
	local f_x = ProtoField.int16("minetest.server.blockdata_x", "Block position X", base.DEC)
	local f_y = ProtoField.int16("minetest.server.blockdata_y", "Block position Y", base.DEC)
	local f_z = ProtoField.int16("minetest.server.blockdata_z", "Block position Z", base.DEC)
	local f_data = ProtoField.bytes("minetest.server.blockdata_block", "Serialized MapBlock")

	minetest_server_commands[0x20] = {
		"BLOCKDATA", 8,
		{ f_x, f_y, f_z, f_data },
		function(buffer, pinfo, tree, t)
			t:add(f_x, buffer(2,2))
			t:add(f_y, buffer(4,2))
			t:add(f_z, buffer(6,2))
			t:add(f_data, buffer(8, buffer:len() - 8))
		end
	}
end

-- TOCLIENT_ADDNODE

do
	local f_x = ProtoField.int16("minetest.server.addnode_x", "Position X", base.DEC)
	local f_y = ProtoField.int16("minetest.server.addnode_y", "Position Y", base.DEC)
	local f_z = ProtoField.int16("minetest.server.addnode_z", "Position Z", base.DEC)
	local f_data = ProtoField.bytes("minetest.server.addnode_node", "Serialized MapNode")

	minetest_server_commands[0x21] = {
		"ADDNODE", 8,
		{ f_x, f_y, f_z, f_data },
		function(buffer, pinfo, tree, t)
			t:add(f_x, buffer(2,2))
			t:add(f_y, buffer(4,2))
			t:add(f_z, buffer(6,2))
			t:add(f_data, buffer(8, buffer:len() - 8))
		end
	}
end

-- TOCLIENT_REMOVENODE

do
	local f_x = ProtoField.int16("minetest.server.removenode_x", "Position X", base.DEC)
	local f_y = ProtoField.int16("minetest.server.removenode_y", "Position Y", base.DEC)
	local f_z = ProtoField.int16("minetest.server.removenode_z", "Position Z", base.DEC)

	minetest_server_commands[0x22] = {
		"REMOVENODE", 8,
		{ f_x, f_y, f_z },
		function(buffer, pinfo, tree, t)
			t:add(f_x, buffer(2,2))
			t:add(f_y, buffer(4,2))
			t:add(f_z, buffer(6,2))
		end
	}
end

-- TOCLIENT_PLAYERPOS (obsolete)

minetest_server_commands[0x23] = { "PLAYERPOS", 2 }
minetest_server_obsolete[0x23] = true

-- TOCLIENT_PLAYERINFO (obsolete)

minetest_server_commands[0x24] = { "PLAYERINFO", 2 }
minetest_server_obsolete[0x24] = true

-- TOCLIENT_OPT_BLOCK_NOT_FOUND (obsolete)

minetest_server_commands[0x25] = { "OPT_BLOCK_NOT_FOUND", 2 }
minetest_server_obsolete[0x25] = true

-- TOCLIENT_SECTORMETA (obsolete)

minetest_server_commands[0x26] = { "SECTORMETA", 2 }
minetest_server_obsolete[0x26] = true

-- TOCLIENT_INVENTORY

do
	local f_inventory = ProtoField.string("minetest.server.inventory", "Inventory")

	minetest_server_commands[0x27] = {
		"INVENTORY", 2,
		{ f_inventory },
		function(buffer, pinfo, tree, t)
			t:add(f_inventory, buffer(2, buffer:len() - 2))
		end
	}
end

-- TOCLIENT_OBJECTDATA (obsolete)

minetest_server_commands[0x28] = { "OBJECTDATA", 2 }
minetest_server_obsolete[0x28] = true

-- TOCLIENT_TIME_OF_DAY

do
	local f_time = ProtoField.uint16("minetest.server.time_of_day", "Time", base.DEC)
	local f_time_speed = ProtoField.float("minetest.server.time_speed", "Time Speed", base.DEC)

	minetest_server_commands[0x29] = {
		"TIME_OF_DAY", 4,
		{ f_time, f_time_speed },
		function(buffer, pinfo, tree, t)
			t:add(f_time, buffer(2,2))
			t:add(f_time_speed, buffer(4,4))
		end
	}
end

-- TOCLIENT_CSM_RESTRICTION_FLAGS

minetest_server_commands[0x2a] = { "CSM_RESTRICTION_FLAGS", 2 }

-- TOCLIENT_PLAYER_SPEED

minetest_server_commands[0x2b] = { "PLAYER_SPEED", 2 }

-- TOCLIENT_CHAT_MESSAGE

do
	local abbr = "minetest.server.chat_message_"
	local vs_type = {
		[0] = "Raw",
		[1] = "Normal",
		[2] = "Announce",
		[3] = "System",
	}

	local f_version = ProtoField.uint8(abbr.."version", "Version")
	local f_type = ProtoField.uint8(abbr.."type", "Message Type", base.DEC, vs_type)
	local f_senderlen, f_sender = minetest_field_helper("uint16", abbr.."sender",
		"Message sender")
	local f_messagelen, f_message = minetest_field_helper("uint16", abbr:sub(1,-2),
		"Message")

	minetest_server_commands[0x2f] = {
		"CHAT_MESSAGE", 8,
		{ f_version, f_type, f_senderlen, f_sender,
		  f_messagelen, f_message },
		function(buffer, pinfo, tree, t)
			t:add(f_version, buffer(2,1))
			t:add(f_type, buffer(3,1))
			local off = 4
			off = minetest_decode_helper_utf16(buffer, t, "uint16", off, f_senderlen, f_sender)
			if off then
				off = minetest_decode_helper_utf16(buffer, t, "uint16", off, f_messagelen, f_message)
			end
		end
	}
end

-- TOCLIENT_CHAT_MESSAGE_OLD (obsolete)

minetest_server_commands[0x30] = { "CHAT_MESSAGE_OLD", 2 }
minetest_server_obsolete[0x30] = true

-- TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD

do
	local f_removed_count = ProtoField.uint16(
		"minetest.server.active_object_remove_add_removed_count",
		"Count of removed objects", base.DEC)
	local f_removed = ProtoField.bytes(
		"minetest.server.active_object_remove_add_removed",
		"Removed object")
	local f_removed_id = ProtoField.uint16(
		"minetest.server.active_object_remove_add_removed_id",
		"ID", base.DEC)

	local f_added_count = ProtoField.uint16(
		"minetest.server.active_object_remove_add_added_count",
		"Count of added objects", base.DEC)
	local f_added = ProtoField.bytes(
		"minetest.server.active_object_remove_add_added",
		"Added object")
	local f_added_id = ProtoField.uint16(
		"minetest.server.active_object_remove_add_added_id",
		"ID", base.DEC)
	local f_added_type = ProtoField.uint8(
		"minetest.server.active_object_remove_add_added_type",
		"Type", base.DEC)
	local f_added_init_length = ProtoField.uint32(
		"minetest.server.active_object_remove_add_added_init_length",
		"Initialization data length", base.DEC)
	local f_added_init_data = ProtoField.bytes(
		"minetest.server.active_object_remove_add_added_init_data",
		"Initialization data")

	minetest_server_commands[0x31] = {
		"ACTIVE_OBJECT_REMOVE_ADD", 6,
		{ f_removed_count, f_removed, f_removed_id,
		  f_added_count, f_added, f_added_id,
		  f_added_type, f_added_init_length, f_added_init_data },
		function(buffer, pinfo, tree, t)
			local t2, index, pos

			local removed_count_pos = 2
			local removed_count = buffer(removed_count_pos, 2):uint()
			t:add(f_removed_count, buffer(removed_count_pos, 2))

			local added_count_pos = removed_count_pos + 2 + 2 * removed_count
			if not minetest_check_length(buffer, added_count_pos + 2, t) then
				return
			end

			-- Loop through removed active objects
			for index = 0, removed_count - 1 do
				pos = removed_count_pos + 2 + 2 * index
				t2 = t:add(f_removed, buffer(pos, 2))
				t2:set_text("Removed object, ID = " ..  buffer(pos, 2):uint())
				t2:add(f_removed_id, buffer(pos, 2))
			end

			local added_count = buffer(added_count_pos, 2):uint()
			t:add(f_added_count, buffer(added_count_pos, 2))

			-- Loop through added active objects
			pos = added_count_pos + 2
			for index = 0, added_count - 1 do
				if not minetest_check_length(buffer, pos + 7, t) then
					return
				end

				local init_length = buffer(pos + 3, 4):uint()
				if not minetest_check_length(buffer, pos + 7 + init_length, t) then
					return
				end

				t2 = t:add(f_added, buffer(pos, 7 + init_length))
				t2:set_text("Added object, ID = " .. buffer(pos, 2):uint())
				t2:add(f_added_id, buffer(pos, 2))
				t2:add(f_added_type, buffer(pos + 2, 1))
				t2:add(f_added_init_length, buffer(pos + 3, 4))
				t2:add(f_added_init_data, buffer(pos + 7, init_length))

				pos = pos + 7 + init_length
			end

			pinfo.cols.info:append(" * " .. (removed_count + added_count))
		end
	}
end

-- TOCLIENT_ACTIVE_OBJECT_MESSAGES

do
	local f_object_count = ProtoField.uint16(
		"minetest.server.active_object_messages_object_count",
		"Count of objects", base.DEC)
	local f_object = ProtoField.bytes(
		"minetest.server.active_object_messages_object",
		"Object")
	local f_object_id = ProtoField.uint16(
		"minetest.server.active_object_messages_id",
		"ID", base.DEC)
	local f_message_length = ProtoField.uint16(
		"minetest.server.active_object_messages_message_length",
		"Message length", base.DEC)
	local f_message = ProtoField.bytes(
		"minetest.server.active_object_messages_message",
		"Message")

	minetest_server_commands[0x32] = {
		"ACTIVE_OBJECT_MESSAGES", 2,
		{ f_object_count, f_object, f_object_id, f_message_length, f_message },
		function(buffer, pinfo, tree, t)
			local t2, count, pos, message_length

			count = 0
			pos = 2
			while pos < buffer:len() do
				if not minetest_check_length(buffer, pos + 4, t) then
					return
				end
				message_length = buffer(pos + 2, 2):uint()
				if not minetest_check_length(buffer, pos + 4 + message_length, t) then
					return
				end
				count = count + 1
				pos = pos + 4 + message_length
			end

			pinfo.cols.info:append(" * " .. count)
			t:add(f_object_count, count):set_generated()

			pos = 2
			while pos < buffer:len() do
				message_length = buffer(pos + 2, 2):uint()

				t2 = t:add(f_object, buffer(pos, 4 + message_length))
				t2:set_text("Object, ID = " ..  buffer(pos, 2):uint())
				t2:add(f_object_id, buffer(pos, 2))
				t2:add(f_message_length, buffer(pos + 2, 2))
				t2:add(f_message, buffer(pos + 4, message_length))

				pos = pos + 4 + message_length
			end
		end
	}
end

-- TOCLIENT_HP

do
	local f_hp = ProtoField.uint16("minetest.server.hp", "Hitpoints", base.DEC)

	minetest_server_commands[0x33] = {
		"HP", 4,
		{ f_hp },
		function(buffer, pinfo, tree, t)
			t:add(f_hp, buffer(2,2))
		end
	}
end

-- TOCLIENT_MOVE_PLAYER

do
	local abbr = "minetest.server.move_player_"

	local f_x = ProtoField.float(abbr.."x", "Position X")
	local f_y = ProtoField.float(abbr.."y", "Position Y")
	local f_z = ProtoField.float(abbr.."z", "Position Z")
	local f_pitch = ProtoField.float(abbr.."_pitch", "Pitch")
	local f_yaw = ProtoField.float(abbr.."yaw", "Yaw")

	minetest_server_commands[0x34] = {
		"MOVE_PLAYER", 22,
		{ f_x, f_y, f_z, f_pitch, f_yaw, f_garbage },
		function(buffer, pinfo, tree, t)
			t:add(f_x, buffer(2, 4))
			t:add(f_y, buffer(6, 4))
			t:add(f_z, buffer(10, 4))
			t:add(f_pitch, buffer(14, 4))
			t:add(f_yaw, buffer(18, 4))
		end
	}
end

-- TOCLIENT_ACCESS_DENIED_LEGACY

do
	local f_reason_length = ProtoField.uint16("minetest.server.access_denied_reason_length", "Reason length", base.DEC)
	local f_reason = ProtoField.string("minetest.server.access_denied_reason", "Reason")

	minetest_server_commands[0x35] = {
		"ACCESS_DENIED_LEGACY", 4,
		{ f_reason_length, f_reason },
		function(buffer, pinfo, tree, t)
			t:add(f_reason_length, buffer(2,2))
			local reason_length = buffer(2,2):uint()
			if minetest_check_length(buffer, 4 + reason_length * 2, t) then
				t:add(f_reason, minetest_convert_utf16(buffer(4, reason_length * 2), "Converted reason message"))
			end
		end
	}
end

-- TOCLIENT_FOV

minetest_server_commands[0x36] = { "FOV", 2 }

-- TOCLIENT_DEATHSCREEN

do
	local f_set_camera_point_target = ProtoField.bool(
		"minetest.server.deathscreen_set_camera_point_target",
		"Set camera point target")
	local f_camera_point_target_x = ProtoField.int32(
		"minetest.server.deathscreen_camera_point_target_x",
		"Camera point target X", base.DEC)
	local f_camera_point_target_y = ProtoField.int32(
		"minetest.server.deathscreen_camera_point_target_y",
		"Camera point target Y", base.DEC)
	local f_camera_point_target_z = ProtoField.int32(
		"minetest.server.deathscreen_camera_point_target_z",
		"Camera point target Z", base.DEC)

	minetest_server_commands[0x37] = {
		"DEATHSCREEN", 15,
		{ f_set_camera_point_target, f_camera_point_target_x,
		  f_camera_point_target_y, f_camera_point_target_z},
		function(buffer, pinfo, tree, t)
			t:add(f_set_camera_point_target, buffer(2,1))
			t:add(f_camera_point_target_x, buffer(3,4))
			t:add(f_camera_point_target_y, buffer(7,4))
			t:add(f_camera_point_target_z, buffer(11,4))
		end
	}
end

-- TOCLIENT_MEDIA

minetest_server_commands[0x38] = {"MEDIA", 2}

-- TOCLIENT_TOOLDEF (obsolete)

minetest_server_commands[0x39] = {"TOOLDEF", 2}
minetest_server_obsolete[0x39] = true

-- TOCLIENT_NODEDEF

minetest_server_commands[0x3a] = {"NODEDEF", 2}

-- TOCLIENT_CRAFTITEMDEF (obsolete)

minetest_server_commands[0x3b] = {"CRAFTITEMDEF", 2}
minetest_server_obsolete[0x3b] = true

-- ...

minetest_server_commands[0x3c] = {"ANNOUNCE_MEDIA", 2}
minetest_server_commands[0x3d] = {"ITEMDEF", 2}
minetest_server_commands[0x3f] = {"PLAY_SOUND", 2}
minetest_server_commands[0x40] = {"STOP_SOUND", 2}
minetest_server_commands[0x41] = {"PRIVILEGES", 2}
minetest_server_commands[0x42] = {"INVENTORY_FORMSPEC", 2}
minetest_server_commands[0x43] = {"DETACHED_INVENTORY", 2}
minetest_server_commands[0x44] = {"SHOW_FORMSPEC", 2}
minetest_server_commands[0x45] = {"MOVEMENT", 2}
minetest_server_commands[0x46] = {"SPAWN_PARTICLE", 2}
minetest_server_commands[0x47] = {"ADD_PARTICLE_SPAWNER", 2}

-- TOCLIENT_DELETE_PARTICLESPAWNER_LEGACY (obsolete)

minetest_server_commands[0x48] = {"DELETE_PARTICLESPAWNER_LEGACY", 2}
minetest_server_obsolete[0x48] = true

-- ...

minetest_server_commands[0x49] = {"HUDADD", 2}
minetest_server_commands[0x4a] = {"HUDRM", 2}
minetest_server_commands[0x4b] = {"HUDCHANGE", 2}
minetest_server_commands[0x4c] = {"HUD_SET_FLAGS", 2}
minetest_server_commands[0x4d] = {"HUD_SET_PARAM", 2}
minetest_server_commands[0x4e] = {"BREATH", 2}
minetest_server_commands[0x4f] = {"SET_SKY", 2}
minetest_server_commands[0x50] = {"OVERRIDE_DAY_NIGHT_RATIO", 2}
minetest_server_commands[0x51] = {"LOCAL_PLAYER_ANIMATIONS", 2}
minetest_server_commands[0x52] = {"EYE_OFFSET", 2}
minetest_server_commands[0x53] = {"DELETE_PARTICLESPAWNER", 2}
minetest_server_commands[0x54] = {"CLOUD_PARAMS", 2}
minetest_server_commands[0x55] = {"FADE_SOUND", 2}

-- TOCLIENT_UPDATE_PLAYER_LIST

do
	local abbr = "minetest.server.update_player_list_"
	local vs_type = {
		[0] = "Init",
		[1] = "Add",
		[2] = "Remove",
	}

	local f_type = ProtoField.uint8(abbr.."type", "Type", base.DEC, vs_type)
	local f_count = ProtoField.uint16(abbr.."count", "Number of players", base.DEC)
	local f_name = ProtoField.string(abbr.."name", "Name")