/*      $NetBSD: bootmenu.c,v 1.21 2025/05/06 18:16:12 pgoyette 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.
*/

#ifndef SMALL

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

#include <lib/libsa/stand.h>
#include <lib/libsa/bootcfg.h>
#include <lib/libsa/ufs.h>
#include <lib/libkern/libkern.h>

#include <libi386.h>
#include <bootmenu.h>

static void docommandchoice(int);

extern struct x86_boot_params boot_params;
extern  const char bootprog_name[], bootprog_rev[], bootprog_kernrev[];

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

/*
* XXX
* if module_add, userconf_add are strictly mi they can be folded back
* into sys/lib/libsa/bootcfg.c:perform_bootcfg().
*/
static void
do_bootcfg_command(const char *cmd, char *arg)
{
       if (strcmp(cmd, BOOTCFG_CMD_DEV) == 0)
               command_dev(arg);
       else if (strcmp(cmd, BOOTCFG_CMD_FS) == 0)
               fs_add(arg);
       else if (strcmp(cmd, BOOTCFG_CMD_LOAD) == 0)
               module_add(arg);
       else if (strcmp(cmd, BOOTCFG_CMD_RNDSEED) == 0)
               rnd_add(arg);
       else if (strcmp(cmd, BOOTCFG_CMD_USERCONF) == 0)
               userconf_add(arg);
}

int
parsebootconf(const char *conf)
{
       return perform_bootcfg(conf, &do_bootcfg_command, 32768);
}

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

       choice = -1;
       usedef = 0;

       if (*input == '\0' || *input == '\r' || *input == '\n') {
               choice = def;
               usedef = 1;
       } 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;
       }

       if (bootcfg_info.menuformat != MENUFORMAT_LETTER &&
           !isdigit(*input) && !usedef)
               choice = -1;

       return choice;
}

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

       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);
}

__dead void
doboottypemenu(void)
{
       int choice;
       char input[80];

       /*
        * If we have a single menu entry with empty description and
        * timeout = 0 we do not display any menu.
        */
       if ((bootcfg_info.nummenu > 0 &&
            bootcfg_info.desc[0] != bootcfg_info.command[0] &&
            bootcfg_info.desc[0][0] != 0) || bootcfg_info.timeout > 0) {
               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") &&
                   ((boot_params.bp_flags & X86_BP_FLAGS_PASSWORD) == 0 ||
                   check_password((char *)boot_params.bp_password))) {
                       printf("type \"?\" or \"help\" for help.\n");
                       bootmenu(); /* does not return */
               } else {
                       docommandchoice(choice);
               }

       }
}

#endif  /* !SMALL */

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