/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2011 Alexander V. Chernikov
 * Copyright (c) 2011 Christian S.J. Peron
 * Copyright (c) 2011 Bjoern A. Zeeb
 * 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 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 AUTHOR 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/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>

#include <net/if.h>
#include <net/route.h>

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

#include "ifconfig.h"

static void
fib_status(if_ctx *ctx)
{
        struct ifreq ifr;

        memset(&ifr, 0, sizeof(ifr));
        strlcpy(ifr.ifr_name, ctx->ifname, sizeof(ifr.ifr_name));
        if (ioctl_ctx(ctx, SIOCGIFFIB, (caddr_t)&ifr) == 0 &&
            ifr.ifr_fib != RT_DEFAULT_FIB)
                printf("\tfib: %u\n", ifr.ifr_fib);

        memset(&ifr, 0, sizeof(ifr));
        strlcpy(ifr.ifr_name, ctx->ifname, sizeof(ifr.ifr_name));
        if (ioctl_ctx(ctx, SIOCGTUNFIB, (caddr_t)&ifr) == 0 &&
            ifr.ifr_fib != RT_DEFAULT_FIB)
                printf("\ttunnelfib: %u\n", ifr.ifr_fib);
}

static void
setiffib(if_ctx *ctx, const char *val, int dummy __unused)
{
        struct ifreq ifr = {};
        unsigned long fib;
        char *ep;

        fib = strtoul(val, &ep, 0);
        if (*ep != '\0' || fib > UINT_MAX)
                errx(1, "fib %s not valid", val);

        ifr.ifr_fib = fib;
        if (ioctl_ctx_ifr(ctx, SIOCSIFFIB, &ifr) < 0)
                err(1, "ioctl (SIOCSIFFIB)");
}

static void
settunfib(if_ctx *ctx, const char *val, int dummy __unused)
{
        struct ifreq ifr = {};
        unsigned long fib;
        char *ep;

        fib = strtoul(val, &ep, 0);
        if (*ep != '\0' || fib > UINT_MAX)
                errx(1, "fib %s not valid", val);

        ifr.ifr_fib = fib;
        if (ioctl_ctx_ifr(ctx, SIOCSTUNFIB, &ifr) < 0)
                err(1, "ioctl (SIOCSTUNFIB)");
}

static struct cmd fib_cmds[] = {
        DEF_CMD_ARG("fib", setiffib),
        DEF_CMD_ARG("tunnelfib", settunfib),
};

static struct afswtch af_fib = {
        .af_name        = "af_fib",
        .af_af          = AF_UNSPEC,
        .af_other_status = fib_status,
};

static __constructor void
fib_ctor(void)
{
        size_t i;

        for (i = 0; i < nitems(fib_cmds);  i++)
                cmd_register(&fib_cmds[i]);
        af_register(&af_fib);
}