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mirror of https://github.com/moparisthebest/minetest synced 2024-12-22 15:48:48 -05:00
minetest/builtin/mainmenu/common.lua
est31 d767f025cb Client: disable pre v25 init sending by default
Disable the ability to connect to old servers by default to
improve password security.

If people still want to connect to old (0.4.12 and earlier)
servers, they can flip the send_pre_v25_init setting.

Add the ability to detect if we've tried to connect
to a server which only supports the pre v25 init protocol,
and show an apropriate error message. Most times the error
will already be catched at the serverlist level, the
detection mechanism only acts as last resort, because the
"Connection timed out" error message that would be shown
otherwise would be very confusing.

Automatic "fixing" of this condition is not desired,
as it would allow for downgrade attacks.

As already 161 of the 167 servers on the serverlist
support the new srp based auth protocol (> 96%),
the breakage should be minimal.

Follow up of commit

af30183124 "Add option to not send pre v25 init packet"

Also change the pessimistic assumption of masterlist
server versions to optimistic, in order to avoid buggy
behaviour (favourites not in the serverlist would be
denied to connect to, etc).
2016-08-22 20:23:28 +02:00

317 lines
9.9 KiB
Lua

--Minetest
--Copyright (C) 2014 sapier
--
--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.
--------------------------------------------------------------------------------
-- Global menu data
--------------------------------------------------------------------------------
menudata = {}
--------------------------------------------------------------------------------
-- Local cached values
--------------------------------------------------------------------------------
local min_supp_proto, max_supp_proto
function common_update_cached_supp_proto()
min_supp_proto = core.get_min_supp_proto()
max_supp_proto = core.get_max_supp_proto()
end
common_update_cached_supp_proto()
--------------------------------------------------------------------------------
-- Menu helper functions
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local function render_client_count(n)
if n > 99 then return '99+'
elseif n >= 0 then return tostring(n)
else return '?' end
end
local function configure_selected_world_params(idx)
local worldconfig = modmgr.get_worldconfig(menudata.worldlist:get_list()[idx].path)
if worldconfig.creative_mode then
core.setting_set("creative_mode", worldconfig.creative_mode)
end
if worldconfig.enable_damage then
core.setting_set("enable_damage", worldconfig.enable_damage)
end
end
--------------------------------------------------------------------------------
function image_column(tooltip, flagname)
return "image,tooltip=" .. core.formspec_escape(tooltip) .. "," ..
"0=" .. core.formspec_escape(defaulttexturedir .. "blank.png") .. "," ..
"1=" .. core.formspec_escape(defaulttexturedir .. "server_flags_" .. flagname .. ".png")
end
--------------------------------------------------------------------------------
function order_favorite_list(list)
local res = {}
--orders the favorite list after support
for i = 1, #list do
local fav = list[i]
if is_server_protocol_compat(fav.proto_min, fav.proto_max) then
res[#res + 1] = fav
end
end
for i = 1, #list do
local fav = list[i]
if not is_server_protocol_compat(fav.proto_min, fav.proto_max) then
res[#res + 1] = fav
end
end
return res
end
--------------------------------------------------------------------------------
function render_favorite(spec, is_favorite)
local text = ""
if spec.name then
text = text .. core.formspec_escape(spec.name:trim())
elseif spec.address then
text = text .. spec.address:trim()
if spec.port then
text = text .. ":" .. spec.port
end
end
local details = ""
local grey_out = not is_server_protocol_compat(spec.proto_min, spec.proto_max)
if is_favorite then
details = "1,"
else
details = "0,"
end
if spec.clients and spec.clients_max then
local clients_color = ''
local clients_percent = 100 * spec.clients / spec.clients_max
-- Choose a color depending on how many clients are connected
-- (relatively to clients_max)
if grey_out then clients_color = '#aaaaaa'
elseif spec.clients == 0 then clients_color = '' -- 0 players: default/white
elseif clients_percent <= 60 then clients_color = '#a1e587' -- 0-60%: green
elseif clients_percent <= 90 then clients_color = '#ffdc97' -- 60-90%: yellow
elseif clients_percent == 100 then clients_color = '#dd5b5b' -- full server: red (darker)
else clients_color = '#ffba97' -- 90-100%: orange
end
details = details .. clients_color .. ',' ..
render_client_count(spec.clients) .. ',/,' ..
render_client_count(spec.clients_max) .. ','
elseif grey_out then
details = details .. '#aaaaaa,?,/,?,'
else
details = details .. ',?,/,?,'
end
if spec.creative then
details = details .. "1,"
else
details = details .. "0,"
end
if spec.damage then
details = details .. "1,"
else
details = details .. "0,"
end
if spec.pvp then
details = details .. "1,"
else
details = details .. "0,"
end
return details .. (grey_out and '#aaaaaa,' or ',') .. text
end
--------------------------------------------------------------------------------
os.tempfolder = function()
if core.setting_get("TMPFolder") then
return core.setting_get("TMPFolder") .. DIR_DELIM .. "MT_" .. math.random(0,10000)
end
local filetocheck = os.tmpname()
os.remove(filetocheck)
local randname = "MTTempModFolder_" .. math.random(0,10000)
if DIR_DELIM == "\\" then
local tempfolder = os.getenv("TEMP")
return tempfolder .. filetocheck
else
local backstring = filetocheck:reverse()
return filetocheck:sub(0,filetocheck:len()-backstring:find(DIR_DELIM)+1) ..randname
end
end
--------------------------------------------------------------------------------
function menu_render_worldlist()
local retval = ""
local current_worldlist = menudata.worldlist:get_list()
for i, v in ipairs(current_worldlist) do
if retval ~= "" then retval = retval .. "," end
retval = retval .. core.formspec_escape(v.name) ..
" \\[" .. core.formspec_escape(v.gameid) .. "\\]"
end
return retval
end
--------------------------------------------------------------------------------
function menu_handle_key_up_down(fields, textlist, settingname)
local oldidx, newidx = core.get_textlist_index(textlist), 1
if fields.key_up or fields.key_down then
if fields.key_up and oldidx and oldidx > 1 then
newidx = oldidx - 1
elseif fields.key_down and oldidx and
oldidx < menudata.worldlist:size() then
newidx = oldidx + 1
end
core.setting_set(settingname, menudata.worldlist:get_raw_index(newidx))
configure_selected_world_params(newidx)
return true
end
return false
end
--------------------------------------------------------------------------------
function asyncOnlineFavourites()
if not menudata.public_known then
menudata.public_known = {{
name = fgettext("Loading..."),
description = fgettext_ne("Try reenabling public serverlist and check your internet connection.")
}}
end
menudata.favorites = menudata.public_known
menudata.favorites_is_public = true
if not menudata.public_downloading then
menudata.public_downloading = true
else
return
end
core.handle_async(
function(param)
return core.get_favorites("online")
end,
nil,
function(result)
menudata.public_downloading = nil
local favs = order_favorite_list(result)
if favs[1] then
menudata.public_known = favs
menudata.favorites = menudata.public_known
menudata.favorites_is_public = true
end
core.event_handler("Refresh")
end
)
end
--------------------------------------------------------------------------------
function text2textlist(xpos, ypos, width, height, tl_name, textlen, text, transparency)
local textlines = core.splittext(text, textlen)
local retval = "textlist[" .. xpos .. "," .. ypos .. ";" .. width ..
"," .. height .. ";" .. tl_name .. ";"
for i = 1, #textlines do
textlines[i] = textlines[i]:gsub("\r", "")
retval = retval .. core.formspec_escape(textlines[i]) .. ","
end
retval = retval .. ";0;"
if transparency then retval = retval .. "true" end
retval = retval .. "]"
return retval
end
--------------------------------------------------------------------------------
function is_server_protocol_compat(server_proto_min, server_proto_max)
if (not server_proto_min) or (not server_proto_max) then
-- There is no info. Assume the best and act as if we would be compatible.
return true
end
return min_supp_proto <= server_proto_max and max_supp_proto >= server_proto_min
end
--------------------------------------------------------------------------------
function is_server_protocol_compat_or_error(server_proto_min, server_proto_max)
if not is_server_protocol_compat(server_proto_min, server_proto_max) then
local server_prot_ver_info, client_prot_ver_info
local s_p_min = server_proto_min
local s_p_max = server_proto_max
if s_p_min ~= s_p_max then
server_prot_ver_info = fgettext_ne("Server supports protocol versions between $1 and $2. ",
s_p_min, s_p_max)
else
server_prot_ver_info = fgettext_ne("Server enforces protocol version $1. ",
s_p_min)
end
if min_supp_proto ~= max_supp_proto then
client_prot_ver_info= fgettext_ne("We support protocol versions between version $1 and $2.",
min_supp_proto, max_supp_proto)
else
client_prot_ver_info = fgettext_ne("We only support protocol version $1.", min_supp_proto)
end
gamedata.errormessage = fgettext_ne("Protocol version mismatch. ")
.. server_prot_ver_info
.. client_prot_ver_info
return false
end
return true
end
--------------------------------------------------------------------------------
function menu_worldmt(selected, setting, value)
local world = menudata.worldlist:get_list()[selected]
if world then
local filename = world.path .. DIR_DELIM .. "world.mt"
local world_conf = Settings(filename)
if value then
if not world_conf:write() then
core.log("error", "Failed to write world config file")
end
world_conf:set(setting, value)
world_conf:write()
else
return world_conf:get(setting)
end
else
return nil
end
end
function menu_worldmt_legacy(selected)
local modes_names = {"creative_mode", "enable_damage", "server_announce"}
for _, mode_name in pairs(modes_names) do
local mode_val = menu_worldmt(selected, mode_name)
if mode_val then
core.setting_set(mode_name, mode_val)
else
menu_worldmt(selected, mode_name, core.setting_get(mode_name))
end
end
end