source: rtems-libbsd/freebsd-userspace/commands/sbin/ifconfig/ifcarp.c @ ebbe3cc

/*      $FreeBSD$ */
/*      from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */

/*
 * Copyright (c) 2002 Michael Shalayeff. All rights reserved.
 * Copyright (c) 2003 Ryan McBride. 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 AUTHOR OR HIS RELATIVES 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/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>

#include <stdlib.h>
#include <unistd.h>

#include <net/ethernet.h>
#include <net/if.h>
#ifdef __rtems__
#include <freebsd/netinet/ip_carp.h>
#else
#include <netinet/ip_carp.h>
#endif
#include <net/route.h>

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>

#include "ifconfig.h"

static const char *carp_states[] = { CARP_STATES };

void carp_status(int s);
void setcarp_advbase(const char *,int, int, const struct afswtch *rafp);
void setcarp_advskew(const char *, int, int, const struct afswtch *rafp);
void setcarp_passwd(const char *, int, int, const struct afswtch *rafp);
void setcarp_vhid(const char *, int, int, const struct afswtch *rafp);

void
carp_status(int s)
{
        const char *state;
        struct carpreq carpr;

        memset((char *)&carpr, 0, sizeof(struct carpreq));
        ifr.ifr_data = (caddr_t)&carpr;

        if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
                return;

        if (carpr.carpr_vhid > 0) {
                if (carpr.carpr_state > CARP_MAXSTATE)
                        state = "<UNKNOWN>";
                else
                        state = carp_states[carpr.carpr_state];

                printf("\tcarp: %s vhid %d advbase %d advskew %d\n",
                    state, carpr.carpr_vhid, carpr.carpr_advbase,
                    carpr.carpr_advskew);
        }

        return;

}

void
setcarp_passwd(const char *val, int d, int s, const struct afswtch *afp)
{
        struct carpreq carpr;

        memset((char *)&carpr, 0, sizeof(struct carpreq));
        ifr.ifr_data = (caddr_t)&carpr;

        if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCGVH");

        memset(carpr.carpr_key, 0, sizeof(carpr.carpr_key));
        /* XXX Should hash the password into the key here, perhaps? */
        strlcpy(carpr.carpr_key, val, CARP_KEY_LEN);

        if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCSVH");

        return;
}

void
setcarp_vhid(const char *val, int d, int s, const struct afswtch *afp)
{
        int vhid;
        struct carpreq carpr;

        vhid = atoi(val);

        if (vhid <= 0)
                errx(1, "vhid must be greater than 0");

        memset((char *)&carpr, 0, sizeof(struct carpreq));
        ifr.ifr_data = (caddr_t)&carpr;

        if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCGVH");

        carpr.carpr_vhid = vhid;

        if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCSVH");

        return;
}

void
setcarp_advskew(const char *val, int d, int s, const struct afswtch *afp)
{
        int advskew;
        struct carpreq carpr;

        advskew = atoi(val);

        memset((char *)&carpr, 0, sizeof(struct carpreq));
        ifr.ifr_data = (caddr_t)&carpr;

        if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCGVH");

        carpr.carpr_advskew = advskew;

        if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCSVH");

        return;
}

void
setcarp_advbase(const char *val, int d, int s, const struct afswtch *afp)
{
        int advbase;
        struct carpreq carpr;

        advbase = atoi(val);

        memset((char *)&carpr, 0, sizeof(struct carpreq));
        ifr.ifr_data = (caddr_t)&carpr;

        if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCGVH");

        carpr.carpr_advbase = advbase;

        if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
                err(1, "SIOCSVH");

        return;
}

static struct cmd carp_cmds[] = {
        DEF_CMD_ARG("advbase",  setcarp_advbase),
        DEF_CMD_ARG("advskew",  setcarp_advskew),
        DEF_CMD_ARG("pass",     setcarp_passwd),
        DEF_CMD_ARG("vhid",     setcarp_vhid),
};
static struct afswtch af_carp = {
        .af_name        = "af_carp",
        .af_af          = AF_UNSPEC,
        .af_other_status = carp_status,
};

static __constructor void
carp_ctor(void)
{
#define N(a)    (sizeof(a) / sizeof(a[0]))
        int i;

        for (i = 0; i < N(carp_cmds);  i++)
                cmd_register(&carp_cmds[i]);
        af_register(&af_carp);
#undef N
}