253 lines
6.0 KiB
C
253 lines
6.0 KiB
C
/* $NetBSD: carp.c,v 1.1 2006/05/18 09:05:50 liamjfoy Exp $ */
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/*
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* Copyright (c) 2002 Michael Shalayeff. All rights reserved.
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* Copyright (c) 2003 Ryan McBride. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <net/if.h>
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#include <netinet/ip_carp.h>
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#include <net/route.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#include "extern.h"
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void carp_status(void);
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void setcarp_advbase(const char *,int);
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void setcarp_advskew(const char *, int);
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void setcarp_passwd(const char *, int);
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void setcarp_vhid(const char *, int);
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void setcarp_state(const char *, int);
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void setcarpdev(const char *, int);
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void unsetcarpdev(const char *, int);
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static const char *carp_states[] = { CARP_STATES };
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void
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carp_status(void)
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{
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const char *state;
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struct carpreq carpr;
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memset((char *)&carpr, 0, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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return;
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if (carpr.carpr_vhid > 0) {
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if (carpr.carpr_state > CARP_MAXSTATE)
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state = "<UNKNOWN>";
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else
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state = carp_states[carpr.carpr_state];
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printf("\tcarp: %s carpdev %s vhid %d advbase %d advskew %d\n",
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state, carpr.carpr_carpdev[0] != '\0' ?
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carpr.carpr_carpdev : "none", carpr.carpr_vhid,
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carpr.carpr_advbase, carpr.carpr_advskew);
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}
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}
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/* ARGSUSED */
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void
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setcarp_passwd(const char *val, int d)
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{
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struct carpreq carpr;
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memset((char *)&carpr, 0, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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/* XXX Should hash the password into the key here, perhaps? */
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strlcpy((char *)carpr.carpr_key, val, CARP_KEY_LEN);
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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/* ARGSUSED */
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void
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setcarp_vhid(const char *val, int d)
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{
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struct carpreq carpr;
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long tmp;
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char *ep;
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int vhid;
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errno = 0;
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tmp = strtol(val, &ep, 10);
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if (*ep != '\0' || tmp < 0 || tmp > 255
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|| errno == ERANGE)
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errx(EXIT_FAILURE, "vhid: %s: must be between 0 and 255",
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val);
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vhid = (int)tmp;
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memset((char *)&carpr, 0, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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carpr.carpr_vhid = vhid;
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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/* ARGSUSED */
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void
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setcarp_advskew(const char *val, int d)
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{
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struct carpreq carpr;
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long tmp;
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char *ep;
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int advskew;
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errno = 0;
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tmp = strtol(val, &ep, 10);
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if (*ep != '\0' || tmp < 0 || tmp > 254
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|| errno == ERANGE)
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errx(EXIT_FAILURE, "advskew: %s: must be between 0 and 254",
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val);
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advskew = (int)tmp;
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memset((char *)&carpr, 0, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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carpr.carpr_advskew = advskew;
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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/* ARGSUSED */
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void
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setcarp_advbase(const char *val, int d)
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{
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struct carpreq carpr;
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long tmp;
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char *ep;
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int advbase;
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errno = 0;
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tmp = strtol(val, &ep, 10);
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if (*ep != '\0' || tmp < 0 || tmp > 255
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|| errno == ERANGE)
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errx(EXIT_FAILURE, "advbase: %s: must be between 0 and 255",
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val);
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advbase = (int)tmp;
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memset((char *)&carpr, 0, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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carpr.carpr_advbase = advbase;
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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/* ARGSUSED */
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void
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setcarp_state(const char *val, int d)
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{
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struct carpreq carpr;
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int i;
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bzero((char *)&carpr, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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for (i = 0; i <= CARP_MAXSTATE; i++) {
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if (!strcasecmp(val, carp_states[i])) {
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carpr.carpr_state = i;
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break;
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}
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}
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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/* ARGSUSED */
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void
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setcarpdev(const char *val, int d)
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{
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struct carpreq carpr;
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bzero((char *)&carpr, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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strlcpy(carpr.carpr_carpdev, val, sizeof(carpr.carpr_carpdev));
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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void
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unsetcarpdev(const char *val, int d)
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{
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struct carpreq carpr;
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bzero((char *)&carpr, sizeof(struct carpreq));
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ifr.ifr_data = (caddr_t)&carpr;
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if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCGVH");
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bzero((char *)&carpr.carpr_carpdev, sizeof(carpr.carpr_carpdev));
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if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
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err(EXIT_FAILURE, "SIOCSVH");
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}
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