253 lines
6.9 KiB
Lua
253 lines
6.9 KiB
Lua
--Minetest
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--Copyright (C) 2020 rubenwardy
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--
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--This program is free software; you can redistribute it and/or modify
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--it under the terms of the GNU Lesser General Public License as published by
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--the Free Software Foundation; either version 2.1 of the License, or
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--(at your option) any later version.
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--
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--This program is distributed in the hope that it will be useful,
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--but WITHOUT ANY WARRANTY; without even the implied warranty of
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--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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--GNU Lesser General Public License for more details.
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--
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--You should have received a copy of the GNU Lesser General Public License along
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--with this program; if not, write to the Free Software Foundation, Inc.,
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--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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serverlistmgr = {}
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--------------------------------------------------------------------------------
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local function order_server_list(list)
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local res = {}
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--orders the favorite list after support
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for i = 1, #list do
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local fav = list[i]
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if is_server_protocol_compat(fav.proto_min, fav.proto_max) then
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res[#res + 1] = fav
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end
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end
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for i = 1, #list do
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local fav = list[i]
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if not is_server_protocol_compat(fav.proto_min, fav.proto_max) then
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res[#res + 1] = fav
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end
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end
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return res
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end
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local public_downloading = false
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--------------------------------------------------------------------------------
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function serverlistmgr.sync()
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if not serverlistmgr.servers then
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serverlistmgr.servers = {{
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name = fgettext("Loading..."),
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description = fgettext_ne("Try reenabling public serverlist and check your internet connection.")
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}}
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end
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local serverlist_url = core.settings:get("serverlist_url") or ""
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if not core.get_http_api or serverlist_url == "" then
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serverlistmgr.servers = {{
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name = fgettext("Public server list is disabled"),
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description = ""
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}}
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return
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end
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if public_downloading then
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return
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end
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public_downloading = true
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core.handle_async(
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function(param)
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local http = core.get_http_api()
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local url = ("%s/list?proto_version_min=%d&proto_version_max=%d"):format(
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core.settings:get("serverlist_url"),
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core.get_min_supp_proto(),
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core.get_max_supp_proto())
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local response = http.fetch_sync({ url = url })
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if not response.succeeded then
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return {}
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end
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local retval = core.parse_json(response.data)
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return retval and retval.list or {}
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end,
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nil,
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function(result)
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public_downloading = nil
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local favs = order_server_list(result)
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if favs[1] then
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serverlistmgr.servers = favs
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end
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core.event_handler("Refresh")
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end
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)
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end
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--------------------------------------------------------------------------------
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local function get_favorites_path(folder)
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local base = core.get_user_path() .. DIR_DELIM .. "client" .. DIR_DELIM .. "serverlist" .. DIR_DELIM
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if folder then
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return base
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end
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return base .. core.settings:get("serverlist_file")
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end
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--------------------------------------------------------------------------------
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local function save_favorites(favorites)
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local filename = core.settings:get("serverlist_file")
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-- If setting specifies legacy format change the filename to the new one
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if filename:sub(#filename - 3):lower() == ".txt" then
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core.settings:set("serverlist_file", filename:sub(1, #filename - 4) .. ".json")
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end
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assert(core.create_dir(get_favorites_path(true)))
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core.safe_file_write(get_favorites_path(), core.write_json(favorites))
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end
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--------------------------------------------------------------------------------
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function serverlistmgr.read_legacy_favorites(path)
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local file = io.open(path, "r")
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if not file then
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return nil
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end
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local lines = {}
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for line in file:lines() do
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lines[#lines + 1] = line
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end
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file:close()
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local favorites = {}
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local i = 1
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while i < #lines do
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local function pop()
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local line = lines[i]
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i = i + 1
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return line and line:trim()
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end
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if pop():lower() == "[server]" then
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local name = pop()
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local address = pop()
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local port = tonumber(pop())
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local description = pop()
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if name == "" then
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name = nil
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end
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if description == "" then
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description = nil
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end
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if not address or #address < 3 then
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core.log("warning", "Malformed favorites file, missing address at line " .. i)
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elseif not port or port < 1 or port > 65535 then
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core.log("warning", "Malformed favorites file, missing port at line " .. i)
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elseif (name and name:upper() == "[SERVER]") or
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(address and address:upper() == "[SERVER]") or
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(description and description:upper() == "[SERVER]") then
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core.log("warning", "Potentially malformed favorites file, overran at line " .. i)
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else
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favorites[#favorites + 1] = {
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name = name,
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address = address,
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port = port,
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description = description
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}
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end
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end
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end
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return favorites
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end
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--------------------------------------------------------------------------------
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local function read_favorites()
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local path = get_favorites_path()
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-- If new format configured fall back to reading the legacy file
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if path:sub(#path - 4):lower() == ".json" then
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local file = io.open(path, "r")
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if file then
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local json = file:read("*all")
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file:close()
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return core.parse_json(json)
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end
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path = path:sub(1, #path - 5) .. ".txt"
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end
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local favs = serverlistmgr.read_legacy_favorites(path)
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if favs then
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save_favorites(favs)
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os.remove(path)
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end
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return favs
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end
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--------------------------------------------------------------------------------
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local function delete_favorite(favorites, del_favorite)
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for i=1, #favorites do
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local fav = favorites[i]
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if fav.address == del_favorite.address and fav.port == del_favorite.port then
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table.remove(favorites, i)
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return
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end
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end
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end
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--------------------------------------------------------------------------------
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function serverlistmgr.get_favorites()
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if serverlistmgr.favorites then
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return serverlistmgr.favorites
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end
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serverlistmgr.favorites = {}
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-- Add favorites, removing duplicates
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local seen = {}
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for _, fav in ipairs(read_favorites() or {}) do
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local key = ("%s:%d"):format(fav.address:lower(), fav.port)
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if not seen[key] then
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seen[key] = true
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serverlistmgr.favorites[#serverlistmgr.favorites + 1] = fav
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end
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end
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return serverlistmgr.favorites
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end
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--------------------------------------------------------------------------------
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function serverlistmgr.add_favorite(new_favorite)
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assert(type(new_favorite.port) == "number")
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-- Whitelist favorite keys
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new_favorite = {
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name = new_favorite.name,
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address = new_favorite.address,
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port = new_favorite.port,
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description = new_favorite.description,
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}
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local favorites = serverlistmgr.get_favorites()
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delete_favorite(favorites, new_favorite)
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table.insert(favorites, 1, new_favorite)
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save_favorites(favorites)
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end
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--------------------------------------------------------------------------------
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function serverlistmgr.delete_favorite(del_favorite)
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local favorites = serverlistmgr.get_favorites()
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delete_favorite(favorites, del_favorite)
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save_favorites(favorites)
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end
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