657 lines
21 KiB
Lua
657 lines
21 KiB
Lua
-- TODO: test multiplayer functionality
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--
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-- Note: The x-coordinate is reversed in sign between minetest and minecraft,
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-- and the API compensates for this.
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local source = debug.getinfo(1).source:sub(2)
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-- Detect windows via backslashes in paths
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local mypath = minetest.get_modpath(minetest.get_current_modname())
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local is_windows = (nil ~= string.find(package.path..package.cpath..source..mypath, "%\\%?"))
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local path_separator
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if is_windows then
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path_separator = "\\"
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else
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path_separator = "/"
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end
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local script_window_id = "minetest-rjm-python-script"
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package.path = package.path .. ";" .. mypath .. path_separator .. "?.lua"
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if is_windows then
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package.cpath = package.cpath .. ";" .. mypath .. path_separator .. "?.dll"
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else
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package.cpath = package.cpath .. ";" .. mypath .. path_separator .. "?.so"
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end
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local block = require("block")
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local socket = require("socket")
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local block_hits = {}
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local chat_record = {}
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local player_table = {}
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local socket_client_list = {}
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script_running = false
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restrict_to_sword = true
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max_player_id = 0
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default_player_id = -1
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world_immutable = false
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local settings = Settings(mypath .. path_separator .. "settings.conf")
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local update_settings = false
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python_interpreter = settings:get("python")
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if python_interpreter == nil then
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python_interpreter = "python"
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update_settings = true
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settings:set("python", python_interpreter)
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end
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local local_only = settings:get_bool("restrict_to_local_connections")
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if local_only == nil then
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local_only = false
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update_settings = true
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settings:set("restrict_to_local_connections", tostring(local_only))
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end
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local ws = settings:get_bool("support_websockets")
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if ws == nil then
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ws = true
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update_settings = true
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settings:set("support_websockets", tostring(ws))
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end
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if update_settings then settings:write() end
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local remote_address
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if local_only then
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remote_address = "127.0.0.1"
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else
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remote_address = "*"
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end
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local server = socket.bind(remote_address, 4711)
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server:setoption('tcp-nodelay',true)
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server:settimeout(0)
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local ws_server = nil
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if ws then
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tools = require("tools")
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base64 = require("base64")
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ws_server = socket.bind(remote_address, 14711)
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ws_server:setoption('tcp-nodelay',true)
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ws_server:settimeout(0)
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end
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minetest.register_globalstep(function(dtime)
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local newclient,err
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if server then
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newclient,err = server:accept()
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if not err then
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newclient:settimeout(0)
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table.insert(socket_client_list,
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{client=newclient,handler=safe_handle_command,read_mode="*l"})
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minetest.log("action", "RJM socket client connected")
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end
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end
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if ws_server then
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newclient,err = ws_server:accept()
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if not err then
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newclient:settimeout(0)
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table.insert(socket_client_list,
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{client=newclient,handler=handle_websocket_header,ws={},read_mode="*l"})
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minetest.log("action", "RJM websocket client attempting handshake")
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end
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end
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for i = 1, #socket_client_list do
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err = false
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local line
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local finished = false
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while not err do
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local source = socket_client_list[i]
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line,err = source.client:receive(source.read_mode)
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if err == "closed" then
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table.remove(socket_client_list,i)
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minetest.log("action", "RJM socket client disconnected")
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finished = true
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elseif not err then
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err = source:handler(line)
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if err then
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source.client:close()
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table.remove(socket_client_list,i)
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if err ~= "closed" then
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minetest.log("error", "Error "..err.." in command: RJM socket client disconnected")
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end
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finished = true
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err = "handling"
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end
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end
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end
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if finished then break end
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end
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end)
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local old_is_protected = minetest.is_protected
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function minetest.is_protected(pos, name)
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return world_immutable or old_is_protected(pos, name)
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end
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minetest.register_on_shutdown(function()
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if (script_running) then
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minetest.log("action", "Stopping scripts")
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kill(script_window_id)
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script_running = false
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end
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minetest.log("action", "RJM socket clients disconnected")
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for i = 1, #socket_client_list do
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socket_client_list[i].client:close()
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end
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socket_client_list = {}
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player_table = {}
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max_player_id = 0
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default_player_id = -1
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end)
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minetest.register_on_joinplayer(function(player)
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minetest.log("action", "Hello, player "..player:get_player_name())
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max_player_id = max_player_id + 1
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player_table[max_player_id] = player
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if default_player_id < 0 then default_player_id = max_player_id end
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end)
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minetest.register_on_leaveplayer(function(player)
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minetest.log("action", "Goodbye, player "..player:get_player_name())
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id = get_player_id(player)
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if id then player_table[id] = nil end
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if id == default_player_id then
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default_player_id = max_player_id
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for i,p in pairs(player_table) do
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if p ~= nil and i < default_player_id then default_player_id = i end
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end
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end
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end)
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minetest.register_on_punchnode(function(pos, oldnode, puncher, pointed_thing)
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-- TODO: find a way to get right clicks
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-- TODO: find a way to get clicked side
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if (puncher:is_player()) then
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local item = puncher:get_wielded_item()
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if not restrict_to_sword or (item and item:get_name():find("%:sword")) then
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table.insert(block_hits, ""..(-pos.x)..","..pos.y..","..pos.z..",7,"..get_entity_id(puncher))
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end
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end
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end)
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minetest.register_on_chat_message(function(name, message)
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local id = get_player_id_by_name(name)
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if (message == "/py" or message == "/python") then
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if (script_running) then
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kill(script_window_id)
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minetest.chat_send_all("Killed running scripts")
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script_running = false
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end
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return true
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elseif (message:sub(1,4) == "/py " or message:sub(1,8) == "/python "
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or message:sub(1,5) == "/apy " or message:sub(1,9) == "/apython ") then
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if (script_running and message:sub(2,2) ~= "a") then
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kill(script_window_id)
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script_running = false
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end
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local script, argtext = message:match("^[^ ]+ +([^ ]+) *(.*)")
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if argtext:sub(#argtext) == " " then argtext = argtext:sub(1,#argtext - 1) end
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if not script then return true end
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if script:find("%.%.") then
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minetest.chat_send_all("Sandbox violation in script")
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return true
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end
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script_running = true
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background_launch(script_window_id, '"' .. python_interpreter .. '" "' .. mypath .. path_separator .. "mcpipy" .. path_separator .. script .. '.py" ' .. argtext)
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return true
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else
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table.insert(chat_record, id .. "," .. message:gsub("%|", "|"))
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return false
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end
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end)
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function get_player_id(player)
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local name = player:get_player_name()
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for id,p in pairs(player_table) do
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if p:get_player_name() == name then
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return id
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end
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end
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return nil
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end
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function get_player_id_by_name(name)
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for id,p in pairs(player_table) do
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if p:get_player_name() == name then
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return id
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end
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end
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return nil
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end
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function get_entity_id(entity)
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if not entity:is_player() then
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return 0x7FFFFFFF
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else
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return get_player_id(entity)
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end
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end
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function handle_entity(cmd, id, args)
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local entity
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if id == nil then
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entity = player_table[default_player_id]
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else
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entity = player_table[id]
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end
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if entity == nil then
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return "fail"
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end
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if cmd == "getPos" then
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local pos = entity:getpos()
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return ""..(0.5-pos.x)..","..(pos.y+0.5)..","..(pos.z+0.5)
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elseif cmd == "getTile" then
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local pos = entity:getpos()
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return ""..math.floor(0.5-pos.x)..","..math.floor(pos.y+0.5)..","..math.floor(pos.z+0.5)
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elseif cmd == "setPos" then
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entity:setpos({x=0.5-tonumber(args[1]), y=tonumber(args[2])-0.5, z=tonumber(args[3])-0.5})
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elseif cmd == "setTile" then
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entity:setpos({x=-tonumber(args[1]), y=tonumber(args[2])-0.5, z=tonumber(args[3])})
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elseif cmd == "getPitch" then
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return ""..(entity:get_look_pitch() * -180 / math.pi)
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elseif cmd == "getRotation" then
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return ""..((90 - entity:get_look_yaw() * 180 / math.pi) % 360)
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elseif cmd == "getDirection" then
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local dir = entity:get_look_dir()
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return ""..(-dir.x)..","..(dir.y)..","..(dir.z)
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elseif cmd == "setPitch" then
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-- TODO: For mysterious reasons, set_look_pitch() and get_look_pitch()
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-- values are opposite sign, so we don't negate here. Ideally, the mod
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-- would detect this to make sure that if it's fixed in the next version
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-- this wouldn't be an issue.
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entity:set_look_pitch(tonumber(args[1]) * math.pi / 180)
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elseif cmd == "setRotation" then
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-- TODO: For mysterious reasons, set_look_yaw() and get_look_yaw()
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-- values differ by pi/2. Ideally, the mod
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-- would detect this to make sure that if it's fixed in the next version
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-- this wouldn't be an issue.
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entity:set_look_yaw((-tonumber(args[1])) * math.pi / 180)
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elseif cmd == "setDirection" then
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-- TODO: Fix set_look_yaw() and get_look_yaw() compensation.
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local x = tonumber(args[1])
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local y = tonumber(args[2])
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local z = tonumber(args[3])
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local xz = math.sqrt(x*x+z*z)
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if xz >= 1e-9 then
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entity:set_look_yaw(- math.atan2(-x,z))
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end
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if x*x + y*y + z*z >= 1e-18 then
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entity:set_look_pitch(math.atan2(-y, xz))
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end
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end
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return nil
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end
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function parse_node(args, start)
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local nodenum
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if #args < start then
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nodenum = 0
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elseif #args == start then
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nodenum = block.Block(tonumber(args[start]),0)
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else
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nodenum = block.Block(tonumber(args[start]),tonumber(args[start+1]))
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end
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local node = block.BLOCK[nodenum]
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if node == nil then
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node = block.BLOCK[bit.band(nodenum,0xFFF)]
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if not node then
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node = block.BLOCK[block.STONE]
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end
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end
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return node
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end
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function handle_world(cmd, args)
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if cmd == "setBlock" then
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local node = parse_node(args, 4)
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minetest.set_node({x=-tonumber(args[1]),y=tonumber(args[2]),z=tonumber(args[3])},node)
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elseif cmd == "setNode" then
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minetest.set_node({x=-tonumber(args[1]),y=tonumber(args[2]),z=tonumber(args[3])},{name=args[4]})
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elseif cmd == "setBlocks" then
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local node = parse_node(args, 7)
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local x1 = math.min(-tonumber(args[1]),-tonumber(args[4]))
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local x2 = math.max(-tonumber(args[1]),-tonumber(args[4]))
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local y1 = math.min(tonumber(args[2]),tonumber(args[5]))
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local y2 = math.max(tonumber(args[2]),tonumber(args[5]))
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local z1 = math.min(tonumber(args[3]),tonumber(args[6]))
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local z2 = math.max(tonumber(args[3]),tonumber(args[6]))
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for ycoord = y1,y2 do
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for xcoord = x1,x2 do
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for zcoord = z1,z2 do
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minetest.set_node({x=xcoord,y=ycoord,z=zcoord},node)
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end
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end
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end
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elseif cmd == "setNodes" then
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local node = {node = args[7]}
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local x1 = math.min(-tonumber(args[1]),-tonumber(args[4]))
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local x2 = math.max(-tonumber(args[1]),-tonumber(args[4]))
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local y1 = math.min(tonumber(args[2]),tonumber(args[5]))
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local y2 = math.max(tonumber(args[2]),tonumber(args[5]))
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local z1 = math.min(tonumber(args[3]),tonumber(args[6]))
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local z2 = math.max(tonumber(args[3]),tonumber(args[6]))
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for ycoord = y1,y2 do
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for xcoord = x1,x2 do
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for zcoord = z1,z2 do
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minetest.set_node({x=xcoord,y=ycoord,z=zcoord},node)
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end
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end
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end
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elseif cmd == "getNode" then
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return minetest.get_node({x=-tonumber(args[1]),y=tonumber(args[2]),z=tonumber(args[3])}).name
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elseif cmd == "getBlockWithData" or cmd == "getBlock" then
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local node = minetest.get_node({x=-tonumber(args[1]),y=tonumber(args[2]),z=tonumber(args[3])})
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local id, meta
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if node == "ignore" then
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id = block.AIR
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meta = 0
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else
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id = block.STONE
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meta = 0
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for key,value in pairs(block.BLOCK) do
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if value.name == node.name then
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id = math.floor(bit.band(key,0xFFF))
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meta = math.floor(bit.rshift(key,12))
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break
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end
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end
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end
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if cmd == "getBlock" then
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return ""..id
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else
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return ""..id..","..meta
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end
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elseif cmd == "getHeight" then
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-- TODO: Handle larger heights than 1024
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-- TODO: Wait for emergence?
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local xcoord = -tonumber(args[1])
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local zcoord = tonumber(args[2])
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for ycoord = 1024,-1024,-1 do
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local node = minetest.get_node_or_nil({x=xcoord,y=ycoord,z=zcoord})
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if node and node.name ~= "air" then
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return ""..ycoord
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end
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end
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return "-1025"
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elseif cmd == "getPlayerId" then
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if #args > 0 then
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local id = get_player_id_by_name(args[1])
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if id == nil then
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return "fail"
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else
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return ""..id
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end
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else
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return ""..default_player_id
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end
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elseif cmd == "getPlayerIds" then
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local ids = {}
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for id,_ in pairs(player_table) do
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table.insert(ids, id)
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end
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table.sort(ids)
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return table.concat(ids, "|")
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elseif cmd == "setting" then
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if args[1] == "world_immutable" then
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world_immutable = (0 ~= tonumber(args[2]))
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end
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end
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return nil
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end
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function handle_events(cmd, args)
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if (cmd == "setting") then
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if (args[1] == "restrict_to_sword") then
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restrict_to_sword = (0 ~= tonumber(args[2]))
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end
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elseif (cmd == "block.hits") then
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local h = block_hits
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block_hits = {}
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return table.concat(h, "|")
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elseif (cmd == "chat.posts") then
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local c = chat_record
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chat_record = {}
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return table.concat(c, "|")
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elseif (cmd == "clear") then
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block_hits = {}
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chat_record = {}
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end
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return nil
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end
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function background_launch(window_identifier, cmd)
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-- TODO: non-Windows
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if not is_windows then return false end
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local cmdline = 'start "' .. window_identifier .. '" /MIN ' .. cmd
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minetest.log("action", "launching ["..cmdline.."]")
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os.execute(cmdline)
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end
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function kill(window_identifier)
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-- TODO: non-Windows
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minetest.log('taskkill /F /FI "WINDOWTITLE eq ' .. window_identifier .. '"')
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os.execute('taskkill /F /FI "WINDOWTITLE eq ' .. window_identifier .. '"')
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end
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function safe_handle_command(source,line)
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local status, err = pcall(function()
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local response = handle_command(line)
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if response then source.client:send(response.."\n") end
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end)
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return err
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end
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function handle_command(line)
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local cmd, argtext = line:match("^([^(]+)%((.*)%)")
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if not cmd then return end
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local args = {}
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for arg in argtext:gmatch("([^,]+)") do
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table.insert(args, arg)
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end
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if cmd:sub(1,6) == "world." then
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return handle_world(cmd:sub(7),args)
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elseif cmd:sub(1,7) == "player." then
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return handle_entity(cmd:sub(8),nil,args)
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elseif cmd:sub(1,7) == "entity." then
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local player = tonumber(args[1])
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table.remove(args,1)
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return handle_entity(cmd:sub(8),player,args)
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elseif cmd:sub(1,7) == "events." then
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return handle_events(cmd:sub(8),args)
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elseif cmd == "chat.post" then
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minetest.chat_send_all(argtext)
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end
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return nil
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end
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function complete_data(source,data)
|
|
local needed = tonumber(source.read_mode)
|
|
local have = data:len()
|
|
|
|
if source.ws.saved_data then
|
|
source.ws.saved_data = source.ws.saved_data .. data
|
|
else
|
|
source.ws.saved_data = data
|
|
end
|
|
|
|
if have >= needed then
|
|
local out = source.ws.saved_data
|
|
source.ws.saved_data = nil
|
|
return out
|
|
else
|
|
source.read_mode = ""..(needed-have)
|
|
return nil
|
|
end
|
|
end
|
|
|
|
function send_message(remote,opcode,data)
|
|
local out = string.char(0x80 + opcode)
|
|
local len = data:len()
|
|
if len > 65535 then
|
|
out = out .. string.char(127)
|
|
for i = 56,0,-8 do
|
|
out = out .. string.char(bit.band(bit.rshift(len, i),0xFF))
|
|
end
|
|
elseif len > 125 then
|
|
out = out .. string.char(126)
|
|
out = out .. string.char(bit.rshift(len, 8)) .. string.char(bit.band(len,0xFF))
|
|
else
|
|
out = out .. string.char(len)
|
|
end
|
|
out = out .. data
|
|
remote.client:send(out)
|
|
return nil
|
|
end
|
|
|
|
function handle_websocket_complete_payload(source,data)
|
|
if source.ws.opcode == 0x09 then
|
|
-- ping -> pong
|
|
send_message(source,0x0A,data)
|
|
elseif source.ws.opcode == 0x02 or source.ws.opcode == 0x01 then
|
|
local status, err = pcall(function()
|
|
local response = handle_command(data)
|
|
if response then send_message(source,0x01,response.."\n") end
|
|
end)
|
|
return err
|
|
end
|
|
|
|
return nil
|
|
end
|
|
|
|
function handle_websocket_payload(source,data)
|
|
data = complete_data(source,data)
|
|
if data == nil then return nil end
|
|
local mask = data:sub(1,4)
|
|
local decoded = ""
|
|
for i = 1,source.ws.payload_len do
|
|
decoded = decoded .. string.char(bit.bxor( mask:byte( ((i-1)%4) + 1 ), data:byte(4+i) ))
|
|
end
|
|
|
|
if source.ws.payload then
|
|
decoded = source.ws.payload .. decoded
|
|
end
|
|
|
|
source.read_mode = "2"
|
|
source.handler = handle_websocket_frame
|
|
|
|
if source.ws.frame_end then
|
|
source.ws.payload = nil
|
|
return handle_websocket_complete_payload(source,decoded)
|
|
else
|
|
source.ws.payload = decoded
|
|
end
|
|
|
|
return nil
|
|
end
|
|
|
|
function handle_websocket_payload_len(source,data)
|
|
data = complete_data(source,data)
|
|
if data == nil then return nil end
|
|
if source.read_mode == "1" then
|
|
source.ws.payload_len = data:byte(1)
|
|
elseif source.read_mode == "2" then
|
|
source.ws.payload_len = bit.lshift(data:byte(1),8)+data:byte(2)
|
|
elseif source.read_mode == "8" then
|
|
source.ws.payload_len =
|
|
bit.lshift(data:byte(1),56)+
|
|
bit.lshift(data:byte(2),48)+
|
|
bit.lshift(data:byte(3),40)+
|
|
bit.lshift(data:byte(4),32)+
|
|
bit.lshift(data:byte(5),24)+
|
|
bit.lshift(data:byte(6),16)+
|
|
bit.lshift(data:byte(7),8)+
|
|
data:byte(8)
|
|
end
|
|
source.read_mode = ""..(4+source.ws.payload_len)
|
|
source.handler = handle_websocket_payload
|
|
return nil
|
|
end
|
|
|
|
function handle_websocket_frame(source,data)
|
|
data = complete_data(source,data)
|
|
if data == nil then return nil end
|
|
local x = data:byte(1)
|
|
--print(string.format("frame %02x %02x",data:byte(1),data:byte(2)))
|
|
source.ws.frame_end = (0 ~= bit.band(0x80, x))
|
|
local opcode = bit.band(0xF, x)
|
|
if opcode == 0x08 then
|
|
--print("closing")
|
|
source.client:close()
|
|
return "closed"
|
|
end
|
|
if opcode ~= 0 then
|
|
source.ws.opcode = opcode
|
|
end
|
|
local y = data:byte(2)
|
|
source.ws.mask = (0 ~= bit.band(0x80, y))
|
|
if not source.ws.mask and opcode <= 0x02 then
|
|
return "unmasked data ("..opcode..")"
|
|
end
|
|
local payload_len = bit.band(y, 0x7F)
|
|
if payload_len == 126 then
|
|
source.handler = handle_websocket_payload_len
|
|
source.read_mode = "2"
|
|
elseif payload_len == 127 then
|
|
source.handler = handle_websocket_payload_len
|
|
source.read_mode = "8"
|
|
else
|
|
source.read_mode = "1"
|
|
return handle_websocket_payload_len(source,string.char(payload_len))
|
|
end
|
|
return nil
|
|
end
|
|
|
|
function handle_websocket_header(source,line)
|
|
if line:find("^Upgrade%: +websocket") then
|
|
source.ws.isWebsocket = true
|
|
return nil
|
|
end
|
|
|
|
if not source.ws.key then
|
|
source.ws.key = line:match("^Sec%-WebSocket%-Key%: +([=+/0-9A-Za-z]+)")
|
|
end
|
|
|
|
if line == "" then
|
|
if source.ws.isWebsocket and source.ws.key then
|
|
local new_key = base64.encode(tools.sha1(source.ws.key .. '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'))
|
|
source.ws = {}
|
|
local response = "HTTP/1.1 101 Switching Protocols\r\n"..
|
|
"Upgrade: websocket\r\n"..
|
|
"Connection: Upgrade\r\n"..
|
|
"Sec-WebSocket-Accept: "..new_key.."\r\n\r\n";
|
|
source.client:send(response)
|
|
source.read_mode = "2"
|
|
source.handler = handle_websocket_frame
|
|
minetest.log("action","Websocket handshake")
|
|
return nil
|
|
else
|
|
return "invalid websocket request"
|
|
end
|
|
end
|
|
|
|
return nil
|
|
end
|
|
|