carp.c revision 142215
1/* $FreeBSD: head/sbin/ifconfig/ifcarp.c 142215 2005-02-22 13:04:05Z glebius $ */ 2/* from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */ 3 4/* 5 * Copyright (c) 2002 Michael Shalayeff. All rights reserved. 6 * Copyright (c) 2003 Ryan McBride. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include <sys/param.h> 31#include <sys/ioctl.h> 32#include <sys/socket.h> 33#include <sys/sockio.h> 34 35#include <stdlib.h> 36#include <unistd.h> 37 38#include <net/ethernet.h> 39#include <net/if.h> 40#include <netinet/ip_carp.h> 41#include <net/route.h> 42 43#include <ctype.h> 44#include <stdio.h> 45#include <string.h> 46#include <stdlib.h> 47#include <unistd.h> 48#include <err.h> 49#include <errno.h> 50 51#include "ifconfig.h" 52 53static const char *carp_states[] = { CARP_STATES }; 54 55void carp_status(int s, const struct rt_addrinfo *); 56void setcarp_advbase(const char *,int, int, const struct afswtch *rafp); 57void setcarp_advskew(const char *, int, int, const struct afswtch *rafp); 58void setcarp_passwd(const char *, int, int, const struct afswtch *rafp); 59void setcarp_vhid(const char *, int, int, const struct afswtch *rafp); 60 61void 62carp_status(int s, const struct rt_addrinfo *info __unused) 63{ 64 const char *state; 65 struct carpreq carpr; 66 67 memset((char *)&carpr, 0, sizeof(struct carpreq)); 68 ifr.ifr_data = (caddr_t)&carpr; 69 70 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) 71 return; 72 73 if (carpr.carpr_vhid > 0) { 74 if (carpr.carpr_state > CARP_MAXSTATE) 75 state = "<UNKNOWN>"; 76 else 77 state = carp_states[carpr.carpr_state]; 78 79 printf("\tcarp: %s vhid %d advbase %d advskew %d\n", 80 state, carpr.carpr_vhid, carpr.carpr_advbase, 81 carpr.carpr_advskew); 82 } 83 84 return; 85 86} 87 88void 89setcarp_passwd(const char *val, int d, int s, const struct afswtch *afp) 90{ 91 struct carpreq carpr; 92 93 memset((char *)&carpr, 0, sizeof(struct carpreq)); 94 ifr.ifr_data = (caddr_t)&carpr; 95 96 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) 97 err(1, "SIOCGVH"); 98 99 /* XXX Should hash the password into the key here, perhaps? */ 100 strlcpy(carpr.carpr_key, val, CARP_KEY_LEN); 101 102 if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1) 103 err(1, "SIOCSVH"); 104 105 return; 106} 107 108void 109setcarp_vhid(const char *val, int d, int s, const struct afswtch *afp) 110{ 111 int vhid; 112 struct carpreq carpr; 113 114 vhid = atoi(val); 115 116 if (vhid <= 0) 117 errx(1, "vhid must be greater than 0"); 118 119 memset((char *)&carpr, 0, sizeof(struct carpreq)); 120 ifr.ifr_data = (caddr_t)&carpr; 121 122 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) 123 err(1, "SIOCGVH"); 124 125 carpr.carpr_vhid = vhid; 126 127 if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1) 128 err(1, "SIOCSVH"); 129 130 return; 131} 132 133void 134setcarp_advskew(const char *val, int d, int s, const struct afswtch *afp) 135{ 136 int advskew; 137 struct carpreq carpr; 138 139 advskew = atoi(val); 140 141 memset((char *)&carpr, 0, sizeof(struct carpreq)); 142 ifr.ifr_data = (caddr_t)&carpr; 143 144 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) 145 err(1, "SIOCGVH"); 146 147 carpr.carpr_advskew = advskew; 148 149 if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1) 150 err(1, "SIOCSVH"); 151 152 return; 153} 154 155void 156setcarp_advbase(const char *val, int d, int s, const struct afswtch *afp) 157{ 158 int advbase; 159 struct carpreq carpr; 160 161 advbase = atoi(val); 162 163 memset((char *)&carpr, 0, sizeof(struct carpreq)); 164 ifr.ifr_data = (caddr_t)&carpr; 165 166 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1) 167 err(1, "SIOCGVH"); 168 169 carpr.carpr_advbase = advbase; 170 171 if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1) 172 err(1, "SIOCSVH"); 173 174 return; 175} 176 177static struct cmd carp_cmds[] = { 178 DEF_CMD_ARG("advbase", setcarp_advbase), 179 DEF_CMD_ARG("advskew", setcarp_advskew), 180 DEF_CMD_ARG("pass", setcarp_passwd), 181 DEF_CMD_ARG("vhid", setcarp_vhid), 182}; 183static struct afswtch af_carp = { 184 .af_name = "af_carp", 185 .af_af = AF_UNSPEC, 186 .af_status = carp_status, 187}; 188 189static __constructor void 190carp_ctor(void) 191{ 192#define N(a) (sizeof(a) / sizeof(a[0])) 193 int i; 194 195 for (i = 0; i < N(carp_cmds); i++) 196 cmd_register(&carp_cmds[i]); 197 af_register(&af_carp); 198#undef N 199} 200