/* $FreeBSD$ */
/* from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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/if.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/ip_carp.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 };
static void carp_status(int s);
static void setcarp_vhid(const char *, int, int, const struct afswtch *rafp);
static void setcarp_callback(int, void *);
static void setcarp_advbase(const char *,int, int, const struct afswtch *rafp);
static void setcarp_advskew(const char *, int, int, const struct afswtch *rafp);
static void setcarp_passwd(const char *, int, int, const struct afswtch *rafp);
static int carpr_vhid = -1;
static int carpr_advskew = -1;
static int carpr_advbase = -1;
static int carpr_state = -1;
static unsigned char const *carpr_key;
static void
carp_status(int s)
{
struct carpreq carpr[CARP_MAXVHID];
int i;
bzero(carpr, sizeof(struct carpreq) * CARP_MAXVHID);
carpr[0].carpr_count = CARP_MAXVHID;
ifr.ifr_data = (caddr_t)&carpr;
if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
return;
for (i = 0; i < carpr[0].carpr_count; i++) {
printf("\tcarp: %s vhid %d advbase %d advskew %d",
carp_states[carpr[i].carpr_state], carpr[i].carpr_vhid,
carpr[i].carpr_advbase, carpr[i].carpr_advskew);
if (printkeys && carpr[i].carpr_key[0] != '\0')
printf(" key \"%s\"\n", carpr[i].carpr_key);
else
printf("\n");
}
}
static void
setcarp_vhid(const char *val, int d, int s, const struct afswtch *afp)
{
carpr_vhid = atoi(val);
if (carpr_vhid <= 0 || carpr_vhid > CARP_MAXVHID)
errx(1, "vhid must be greater than 0 and less than %u",
CARP_MAXVHID);
switch (afp->af_af) {
#ifdef INET
case AF_INET:
{
struct in_aliasreq *ifra;
ifra = (struct in_aliasreq *)afp->af_addreq;
ifra->ifra_vhid = carpr_vhid;
break;
}
#endif
#ifdef INET6
case AF_INET6:
{
struct in6_aliasreq *ifra;
ifra = (struct in6_aliasreq *)afp->af_addreq;
ifra->ifra_vhid = carpr_vhid;
break;
}
#endif
default:
errx(1, "%s doesn't support carp(4)", afp->af_name);
}
callback_register(setcarp_callback, NULL);
}
static void
setcarp_callback(int s, void *arg __unused)
{
struct carpreq carpr;
bzero(&carpr, sizeof(struct carpreq));
carpr.carpr_vhid = carpr_vhid;
carpr.carpr_count = 1;
ifr.ifr_data = (caddr_t)&carpr;
if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1 && errno != ENOENT)
err(1, "SIOCGVH");
if (carpr_key != NULL)
/* XXX Should hash the password into the key here? */
strlcpy(carpr.carpr_key, carpr_key, CARP_KEY_LEN);
if (carpr_advskew > -1)
carpr.carpr_advskew = carpr_advskew;
if (carpr_advbase > -1)
carpr.carpr_advbase = carpr_advbase;
if (carpr_state > -1)
carpr.carpr_state = carpr_state;
if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
err(1, "SIOCSVH");
}
static void
setcarp_passwd(const char *val, int d, int s, const struct afswtch *afp)
{
if (carpr_vhid == -1)
errx(1, "passwd requires vhid");
carpr_key = val;
}
static void
setcarp_advskew(const char *val, int d, int s, const struct afswtch *afp)
{
if (carpr_vhid == -1)
errx(1, "advskew requires vhid");
carpr_advskew = atoi(val);
}
static void
setcarp_advbase(const char *val, int d, int s, const struct afswtch *afp)
{
if (carpr_vhid == -1)
errx(1, "advbase requires vhid");
carpr_advbase = atoi(val);
}
static void
setcarp_state(const char *val, int d, int s, const struct afswtch *afp)
{
int i;
if (carpr_vhid == -1)
errx(1, "state requires vhid");
for (i = 0; i <= CARP_MAXSTATE; i++)
if (strcasecmp(carp_states[i], val) == 0) {
carpr_state = i;
return;
}
errx(1, "unknown state");
}
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),
DEF_CMD_ARG("state", setcarp_state),
};
static struct afswtch af_carp = {
.af_name = "af_carp",
.af_af = AF_UNSPEC,
.af_other_status = carp_status,
};
static __constructor void
carp_ctor(void)
{
int i;
for (i = 0; i < nitems(carp_cmds); i++)
cmd_register(&carp_cmds[i]);
af_register(&af_carp);
}
