/*      $OpenBSD: vars.c,v 1.1 2020/07/16 19:48:58 kettenis Exp $       */

/*
 * Copyright (c) 1998-2000 Michael Shalayeff
 * 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 AUTHOR ``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 REGENTS 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 MIND, 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/param.h>
#include <sys/reboot.h>

#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "cmd.h"

extern int debug;
int db_console = -1;

static int Xdevice(void);
#ifdef DEBUG
static int Xdebug(void);
#endif
static int Xdb_console(void);
static int Ximage(void);
static int Xhowto(void);
static int Xtimeout(void);
int Xset(void);

const struct cmd_table cmd_set[] = {
        {"howto",  CMDT_VAR, Xhowto},
#ifdef DEBUG
        {"debug",  CMDT_VAR, Xdebug},
#endif
        {"device", CMDT_VAR, Xdevice},
        {"image",  CMDT_VAR, Ximage},
        {"timeout",CMDT_VAR, Xtimeout},
        {"db_console", CMDT_VAR, Xdb_console},
        {NULL,0}
};

#ifdef DEBUG
static int
Xdebug(void)
{
        if (cmd.argc != 2)
                printf( "o%s\n", debug? "n": "ff" );
        else
                debug = (cmd.argv[1][0] == '0' ||
                         (cmd.argv[1][0] == 'o' && cmd.argv[1][1] == 'f'))?
                         0: 1;
        return 0;
}
#endif

int
Xdb_console(void)
{
        if (cmd.argc != 2) {
                switch (db_console) {
                case 0:
                        printf("off\n");
                        break;
                case 1:
                        printf("on\n");
                        break;
                default:
                        printf("unset\n");
                        break;
                }
        } else {
                if (strcmp(cmd.argv[1], "0") == 0 ||
                    strcmp(cmd.argv[1], "off") == 0)
                        db_console = 0;
                else if (strcmp(cmd.argv[1], "1") == 0 ||
                    strcmp(cmd.argv[1], "on") == 0)
                        db_console = 1;
        }

        return (0);
}

static int
Xtimeout(void)
{
        if (cmd.argc != 2)
                printf( "%d\n", cmd.timeout );
        else
                cmd.timeout = (int)strtol( cmd.argv[1], (char **)NULL, 0 );
        return 0;
}

/* called only w/ no arguments */
int
Xset(void)
{
        const struct cmd_table *ct;

        printf("boot\n");
        for (ct = cmd_set; ct->cmd_name != NULL; ct++) {
                printf("%s\t ", ct->cmd_name);
                (*ct->cmd_exec)();
        }
        return 0;
}

static int
Xdevice(void)
{
        if (cmd.argc != 2)
                printf("%s\n", cmd.bootdev);
        else
                strlcpy(cmd.bootdev, cmd.argv[1], sizeof(cmd.bootdev));
        return 0;
}

static int
Ximage(void)
{
        if (cmd.argc != 2)
                printf("%s\n", cmd.image);
        else
                strlcpy(cmd.image, cmd.argv[1], sizeof(cmd.image));
        return 0;
}

static int
Xhowto(void)
{
        if (cmd.argc == 1) {
                if (cmd.boothowto) {
                        putchar('-');
                        if (cmd.boothowto & RB_ASKNAME)
                                putchar('a');
                        if (cmd.boothowto & RB_CONFIG)
                                putchar('c');
                        if (cmd.boothowto & RB_SINGLE)
                                putchar('s');
                        if (cmd.boothowto & RB_KDB)
                                putchar('d');
                }
                putchar('\n');
        } else
                bootparse(1);
        return 0;
}

int
bootparse(int i)
{
        char *cp;
        int howto = cmd.boothowto;

        for (; i < cmd.argc; i++) {
                cp = cmd.argv[i];
                if (*cp == '-') {
                        while (*++cp) {
                                switch (*cp) {
                                case 'a':
                                        howto |= RB_ASKNAME;
                                        break;
                                case 'c':
                                        howto |= RB_CONFIG;
                                        break;
                                case 's':
                                        howto |= RB_SINGLE;
                                        break;
                                case 'd':
                                        howto |= RB_KDB;
                                        break;
                                default:
                                        printf("howto: bad option: %c\n", *cp);
                                        return 1;
                                }
                        }
                }
        }
        cmd.boothowto = howto;
        return 0;
}