/*      $NetBSD: bootmenu.c,v 1.5 2016/06/11 06:58:42 dholland Exp $    */

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/reboot.h>
#include <sys/bootblock.h>

#include "boot.h"
#include "unixdev.h"
#include "bootmenu.h"
#include "pathnames.h"

#define MENUFORMAT_AUTO   0
#define MENUFORMAT_NUMBER 1
#define MENUFORMAT_LETTER 2

void
parsebootconf(const char *conf)
{
        perform_bootcfg(conf, &bootcfg_do_noop, 0);
}

/*
 * doboottypemenu will render the menu and parse any user input
 */
static int
getchoicefrominput(char *input, int def)
{
        int choice = -1;

        if (*input == '\0' || *input == '\r' || *input == '\n')
                choice = def;
        else if (*input >= 'A' && *input < bootcfg_info.nummenu + 'A')
                choice = (*input) - 'A';
        else if (*input >= 'a' && *input < bootcfg_info.nummenu + 'a')
                choice = (*input) - 'a';
        else if (isdigit(*input)) {
                choice = atoi(input) - 1;
                if (choice < 0 || choice >= bootcfg_info.nummenu)
                        choice = -1;
        }
        return choice;
}

void
doboottypemenu(void)
{
        char input[80], *ic, *oc;
        int choice;

        printf("\n");
        /* Display menu */
        if (bootcfg_info.menuformat == MENUFORMAT_LETTER) {
                for (choice = 0; choice < bootcfg_info.nummenu; choice++)
                        printf("    %c. %s\n", choice + 'A',
                            bootcfg_info.desc[choice]);
        } else {
                /* Can't use %2d format string with libsa */
                for (choice = 0; choice < bootcfg_info.nummenu; choice++)
                        printf("    %s%d. %s\n",
                            (choice < 9) ?  " " : "",
                            choice + 1,
                            bootcfg_info.desc[choice]);
        }
        choice = -1;
        for (;;) {
                input[0] = '\0';

                if (bootcfg_info.timeout < 0) {
                        if (bootcfg_info.menuformat == MENUFORMAT_LETTER)
                                printf("\nOption: [%c]:",
                                    bootcfg_info.def + 'A');
                        else
                                printf("\nOption: [%d]:",
                                    bootcfg_info.def + 1);

                        kgets(input, sizeof(input));
                        choice = getchoicefrominput(input, bootcfg_info.def);
                } else if (bootcfg_info.timeout == 0)
                        choice = bootcfg_info.def;
                else  {
                        printf("\nChoose an option; RETURN for default; "
                               "SPACE to stop countdown.\n");
                        if (bootcfg_info.menuformat == MENUFORMAT_LETTER)
                                printf("Option %c will be chosen in ",
                                    bootcfg_info.def + 'A');
                        else
                                printf("Option %d will be chosen in ",
                                    bootcfg_info.def + 1);
                        input[0] = awaitkey(bootcfg_info.timeout, 1);
                        input[1] = '\0';
                        choice = getchoicefrominput(input, bootcfg_info.def);
                        /* If invalid key pressed, drop to menu */
                        if (choice == -1)
                                bootcfg_info.timeout = -1;
                }
                if (choice < 0)
                        continue;
                if (!strcmp(bootcfg_info.command[choice], "prompt")) {
                        printf("type \"?\" or \"help\" for help.\n");
                        bootmenu(); /* does not return */
                } else {
                        ic = bootcfg_info.command[choice];
                        /* Split command string at ; into separate commands */
                        do {
                                oc = input;
                                /* Look for ; separator */
                                for (; *ic && *ic != COMMAND_SEPARATOR; ic++)
                                        *oc++ = *ic;
                                if (*input == '\0')
                                        continue;
                                /* Strip out any trailing spaces */
                                oc--;
                                for (; *oc == ' ' && oc > input; oc--);
                                *++oc = '\0';
                                if (*ic == COMMAND_SEPARATOR)
                                        ic++;
                                /* Stop silly command strings like ;;; */
                                if (*input != '\0')
                                        docommand(input);
                                /* Skip leading spaces */
                                for (; *ic == ' '; ic++);
                        } while (*ic);
                }
        }
}