diff options
Diffstat (limited to 'builtin/mainmenu/serverlistmgr.lua')
| -rw-r--r-- | builtin/mainmenu/serverlistmgr.lua | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/builtin/mainmenu/serverlistmgr.lua b/builtin/mainmenu/serverlistmgr.lua new file mode 100644 index 000000000..d98736e54 --- /dev/null +++ b/builtin/mainmenu/serverlistmgr.lua @@ -0,0 +1,241 @@ +--Minetest +--Copyright (C) 2020 rubenwardy +-- +--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. + +serverlistmgr = {} + +-------------------------------------------------------------------------------- +local function order_server_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 + +local public_downloading = false + +-------------------------------------------------------------------------------- +function serverlistmgr.sync() + if not serverlistmgr.servers then + serverlistmgr.servers = {{ + name = fgettext("Loading..."), + description = fgettext_ne("Try reenabling public serverlist and check your internet connection.") + }} + end + + if public_downloading then + return + end + public_downloading = true + + core.handle_async( + function(param) + local http = core.get_http_api() + local url = ("%s/list?proto_version_min=%d&proto_version_max=%d"):format( + core.settings:get("serverlist_url"), + core.get_min_supp_proto(), + core.get_max_supp_proto()) + + local response = http.fetch_sync({ url = url }) + if not response.succeeded then + return {} + end + + local retval = core.parse_json(response.data) + return retval and retval.list or {} + end, + nil, + function(result) + public_downloading = nil + local favs = order_server_list(result) + if favs[1] then + serverlistmgr.servers = favs + end + core.event_handler("Refresh") + end + ) +end + +-------------------------------------------------------------------------------- +local function get_favorites_path() + local base = core.get_user_path() .. DIR_DELIM .. "client" .. DIR_DELIM .. "serverlist" .. DIR_DELIM + return base .. core.settings:get("serverlist_file") +end + +-------------------------------------------------------------------------------- +local function save_favorites(favorites) + local filename = core.settings:get("serverlist_file") + -- If setting specifies legacy format change the filename to the new one + if filename:sub(#filename - 3):lower() == ".txt" then + core.settings:set("serverlist_file", filename:sub(1, #filename - 4) .. ".json") + end + + local path = get_favorites_path() + core.create_dir(path) + core.safe_file_write(path, core.write_json(favorites)) +end + +-------------------------------------------------------------------------------- +function serverlistmgr.read_legacy_favorites(path) + local file = io.open(path, "r") + if not file then + return nil + end + + local lines = {} + for line in file:lines() do + lines[#lines + 1] = line + end + file:close() + + local favorites = {} + + local i = 1 + while i < #lines do + local function pop() + local line = lines[i] + i = i + 1 + return line and line:trim() + end + + if pop():lower() == "[server]" then + local name = pop() + local address = pop() + local port = tonumber(pop()) + local description = pop() + + if name == "" then + name = nil + end + + if description == "" then + description = nil + end + + if not address or #address < 3 then + core.log("warning", "Malformed favorites file, missing address at line " .. i) + elseif not port or port < 1 or port > 65535 then + core.log("warning", "Malformed favorites file, missing port at line " .. i) + elseif (name and name:upper() == "[SERVER]") or + (address and address:upper() == "[SERVER]") or + (description and description:upper() == "[SERVER]") then + core.log("warning", "Potentially malformed favorites file, overran at line " .. i) + else + favorites[#favorites + 1] = { + name = name, + address = address, + port = port, + description = description + } + end + end + end + + return favorites +end + +-------------------------------------------------------------------------------- +local function read_favorites() + local path = get_favorites_path() + + -- If new format configured fall back to reading the legacy file + if path:sub(#path - 4):lower() == ".json" then + local file = io.open(path, "r") + if file then + local json = file:read("*all") + file:close() + return core.parse_json(json) + end + + path = path:sub(1, #path - 5) .. ".txt" + end + + local favs = serverlistmgr.read_legacy_favorites(path) + if favs then + save_favorites(favs) + os.remove(path) + end + return favs +end + +-------------------------------------------------------------------------------- +local function delete_favorite(favorites, del_favorite) + for i=1, #favorites do + local fav = favorites[i] + + if fav.address == del_favorite.address and fav.port == del_favorite.port then + table.remove(favorites, i) + return + end + end +end + +-------------------------------------------------------------------------------- +function serverlistmgr.get_favorites() + if serverlistmgr.favorites then + return serverlistmgr.favorites + end + + serverlistmgr.favorites = {} + + -- Add favorites, removing duplicates + local seen = {} + for _, fav in ipairs(read_favorites() or {}) do + local key = ("%s:%d"):format(fav.address:lower(), fav.port) + if not seen[key] then + seen[key] = true + serverlistmgr.favorites[#serverlistmgr.favorites + 1] = fav + end + end + + return serverlistmgr.favorites +end + +-------------------------------------------------------------------------------- +function serverlistmgr.add_favorite(new_favorite) + assert(type(new_favorite.port) == "number") + + -- Whitelist favorite keys + new_favorite = { + name = new_favorite.name, + address = new_favorite.address, + port = new_favorite.port, + description = new_favorite.description, + } + + local favorites = serverlistmgr.get_favorites() + delete_favorite(favorites, new_favorite) + table.insert(favorites, 1, new_favorite) + save_favorites(favorites) +end + +-------------------------------------------------------------------------------- +function serverlistmgr.delete_favorite(del_favorite) + local favorites = serverlistmgr.get_favorites() + delete_favorite(favorites, del_favorite) + save_favorites(favorites) +end |