freebsd-dev/sbin/ifconfig/ifcarp.c

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/* $FreeBSD$ */
/* 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>
#include <netinet/ip_carp.h>
#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");
/* 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
}