This is a bit cleaner than our former method of an if ... else chain of handlers. Store handlers in the menu.handlers table so that they may be added to or removed dynamically. All handlers take the current menu and selected entry as parameters, and their return value indicates whether the menu processor should continue or not. An omitted return value or 'true' will indicate that we should continue, while returning 'false' will indicate that we should exit the current menu. The omitted return value behavior is due to continuing the loop being the more common situation.
475 lines
11 KiB
Lua
475 lines
11 KiB
Lua
--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- Copyright (C) 2018 Kyle Evans <kevans@FreeBSD.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local core = require("core");
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local color = require("color");
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local config = require("config");
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local screen = require("screen");
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local drawer = require("drawer");
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local menu = {};
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local OnOff;
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local skip;
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local run;
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local autoboot;
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local carousel_choices = {};
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menu.handlers = {
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-- Menu handlers take the current menu and selected entry as parameters,
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-- and should return a boolean indicating whether execution should
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-- continue or not. The return value may be omitted if this entry should
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-- have no bearing on whether we continue or not, indicating that we
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-- should just continue after execution.
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[core.MENU_ENTRY] = function(current_menu, entry)
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-- run function
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entry.func();
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end,
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[core.MENU_CAROUSEL_ENTRY] = function(current_menu, entry)
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-- carousel (rotating) functionality
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local carid = entry.carousel_id;
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local caridx = menu.getCarouselIndex(carid);
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local choices = entry.items();
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if (#choices > 0) then
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caridx = (caridx % #choices) + 1;
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menu.setCarouselIndex(carid, caridx);
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entry.func(caridx, choices[caridx], choices);
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end
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end,
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[core.MENU_SUBMENU] = function(current_menu, entry)
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-- recurse
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return menu.run(entry.submenu());
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end,
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[core.MENU_RETURN] = function(current_menu, entry)
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-- allow entry to have a function/side effect
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if (entry.func ~= nil) then
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entry.func();
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end
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return false;
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end,
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};
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-- loader menu tree is rooted at menu.welcome
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menu.boot_options = {
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entries = {
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-- return to welcome menu
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{
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entry_type = core.MENU_RETURN,
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name = function()
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return "Back to main menu" ..
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color.highlight(" [Backspace]");
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end
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},
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-- load defaults
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return "Load System " .. color.highlight("D") ..
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"efaults";
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end,
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func = function()
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core.setDefaults();
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end,
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alias = {"d", "D"}
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},
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{
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entry_type = core.MENU_SEPARATOR,
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name = function()
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return "";
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end
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},
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{
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entry_type = core.MENU_SEPARATOR,
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name = function()
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return "Boot Options:";
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end
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},
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-- acpi
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return OnOff(color.highlight("A") ..
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"CPI :", core.acpi);
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end,
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func = function()
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core.setACPI();
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end,
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alias = {"a", "A"}
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},
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-- safe mode
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return OnOff("Safe " .. color.highlight("M") ..
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"ode :", core.sm);
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end,
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func = function()
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core.setSafeMode();
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end,
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alias = {"m", "M"}
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},
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-- single user
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return OnOff(color.highlight("S") ..
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"ingle user:", core.su);
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end,
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func = function()
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core.setSingleUser();
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end,
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alias = {"s", "S"}
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},
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-- verbose boot
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return OnOff(color.highlight("V") ..
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"erbose :", core.verbose);
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end,
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func = function()
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core.setVerbose();
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end,
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alias = {"v", "V"}
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},
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},
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};
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menu.welcome = {
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entries = function()
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local menu_entries = menu.welcome.all_entries;
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-- Swap the first two menu items on single user boot
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if (core.isSingleUserBoot()) then
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-- We'll cache the swapped menu, for performance
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if (menu.welcome.swapped_menu ~= nil) then
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return menu.welcome.swapped_menu;
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end
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-- Shallow copy the table
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menu_entries = core.shallowCopyTable(menu_entries);
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-- Swap the first two menu entries
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menu_entries[1], menu_entries[2] =
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menu_entries[2], menu_entries[1];
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-- Then set their names to their alternate names
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menu_entries[1].name, menu_entries[2].name =
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menu_entries[1].alternate_name,
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menu_entries[2].alternate_name;
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menu.welcome.swapped_menu = menu_entries;
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end
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return menu_entries;
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end,
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all_entries = {
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-- boot multi user
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return color.highlight("B") ..
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"oot Multi user " ..
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color.highlight("[Enter]");
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end,
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-- Not a standard menu entry function!
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alternate_name = function()
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return color.highlight("B") ..
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"oot Multi user";
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end,
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func = function()
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core.setSingleUser(false);
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core.boot();
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end,
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alias = {"b", "B"}
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},
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-- boot single user
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return "Boot " .. color.highlight("S") ..
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"ingle user";
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end,
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-- Not a standard menu entry function!
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alternate_name = function()
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return "Boot " .. color.highlight("S") ..
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"ingle user " .. color.highlight("[Enter]");
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end,
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func = function()
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core.setSingleUser(true);
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core.boot();
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end,
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alias = {"s", "S"}
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},
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-- escape to interpreter
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{
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entry_type = core.MENU_RETURN,
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name = function()
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return color.highlight("Esc") ..
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"ape to loader prompt";
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end,
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func = function()
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loader.setenv("autoboot_delay", "NO");
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end,
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alias = {core.KEYSTR_ESCAPE}
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},
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-- reboot
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{
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entry_type = core.MENU_ENTRY,
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name = function()
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return color.highlight("R") .. "eboot";
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end,
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func = function()
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loader.perform("reboot");
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end,
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alias = {"r", "R"}
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},
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{
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entry_type = core.MENU_SEPARATOR,
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name = function()
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return "";
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end
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},
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{
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entry_type = core.MENU_SEPARATOR,
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name = function()
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return "Options:";
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end
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},
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-- kernel options
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{
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entry_type = core.MENU_CAROUSEL_ENTRY,
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carousel_id = "kernel",
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items = core.kernelList,
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name = function(idx, choice, all_choices)
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if (#all_choices == 0) then
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return "Kernel: ";
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end
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local is_default = (idx == 1);
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local kernel_name = "";
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local name_color;
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if (is_default) then
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name_color = color.escapef(color.GREEN);
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kernel_name = "default/";
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else
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name_color = color.escapef(color.BLUE);
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end
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kernel_name = kernel_name .. name_color ..
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choice .. color.default();
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return color.highlight("K") .. "ernel: " ..
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kernel_name .. " (" .. idx .. " of " ..
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#all_choices .. ")";
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end,
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func = function(idx, choice, all_choices)
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config.selectkernel(choice);
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end,
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alias = {"k", "K"}
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},
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-- boot options
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{
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entry_type = core.MENU_SUBMENU,
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name = function()
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return "Boot " .. color.highlight("O") ..
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"ptions";
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end,
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submenu = function()
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return menu.boot_options;
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end,
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alias = {"o", "O"}
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},
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},
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};
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-- The first item in every carousel is always the default item.
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function menu.getCarouselIndex(id)
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local val = carousel_choices[id];
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if (val == nil) then
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return 1;
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end
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return val;
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end
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function menu.setCarouselIndex(id, idx)
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carousel_choices[id] = idx;
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end
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function menu.run(m)
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if (menu.skip()) then
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core.autoboot();
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return false;
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end
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if (m == nil) then
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m = menu.welcome;
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end
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-- redraw screen
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screen.clear();
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screen.defcursor();
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local alias_table = drawer.drawscreen(m);
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menu.autoboot();
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cont = true;
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while (cont) do
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local key = io.getchar();
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-- Special key behaviors
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if ((key == core.KEY_BACKSPACE) or (key == core.KEY_DELETE)) and
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(m ~= menu.welcome) then
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break;
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elseif (key == core.KEY_ENTER) then
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core.boot();
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-- Should not return
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end
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key = string.char(key)
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-- check to see if key is an alias
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local sel_entry = nil;
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for k, v in pairs(alias_table) do
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if (key == k) then
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sel_entry = v;
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end
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end
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-- if we have an alias do the assigned action:
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if (sel_entry ~= nil) then
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-- Get menu handler
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local handler = menu.handlers[sel_entry.entry_type];
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if (handler ~= nil) then
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-- The handler's return value indicates whether
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-- we need to exit this menu. An omitted return
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-- value means "continue" by default.
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cont = handler(m, sel_entry);
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if (cont == nil) then
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cont = true;
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end
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end
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-- if we got an alias key the screen is out of date:
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screen.clear();
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screen.defcursor();
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alias_table = drawer.drawscreen(m);
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end
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end
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if (m == menu.welcome) then
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screen.defcursor();
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print("Exiting menu!");
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config.loadelf();
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return false;
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end
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return true;
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end
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function menu.skip()
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if (core.isSerialBoot()) then
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return true;
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end
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local c = string.lower(loader.getenv("console") or "");
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if ((c:match("^efi[ ;]") or c:match("[ ;]efi[ ;]")) ~= nil) then
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return true;
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end
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c = string.lower(loader.getenv("beastie_disable") or "");
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print("beastie_disable", c);
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return c == "yes";
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end
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function menu.autoboot()
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if (menu.already_autoboot == true) then
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return;
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end
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menu.already_autoboot = true;
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local ab = loader.getenv("autoboot_delay");
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if (ab ~= nil) and (ab:lower() == "no") then
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return;
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elseif (tonumber(ab) == -1) then
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core.boot();
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end
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ab = tonumber(ab) or 10;
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local x = loader.getenv("loader_menu_timeout_x") or 5;
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local y = loader.getenv("loader_menu_timeout_y") or 22;
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local endtime = loader.time() + ab;
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local time;
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repeat
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time = endtime - loader.time();
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screen.setcursor(x, y);
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print("Autoboot in " .. time ..
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" seconds, hit [Enter] to boot" ..
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" or any other key to stop ");
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screen.defcursor();
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if (io.ischar()) then
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local ch = io.getchar();
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if (ch == core.KEY_ENTER) then
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break;
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else
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-- erase autoboot msg
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screen.setcursor(0, y);
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print(" "
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.. " ");
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screen.defcursor();
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return;
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end
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end
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loader.delay(50000);
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until time <= 0;
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core.boot();
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end
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function OnOff(str, b)
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if (b) then
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return str .. color.escapef(color.GREEN) .. "On" ..
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color.escapef(color.WHITE);
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else
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return str .. color.escapef(color.RED) .. "off" ..
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color.escapef(color.WHITE);
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end
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end
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return menu;
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