2 /* from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */
5 * Copyright (c) 2002 Michael Shalayeff. All rights reserved.
6 * Copyright (c) 2003 Ryan McBride. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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.
30 #include <sys/param.h>
31 #include <sys/ioctl.h>
32 #include <sys/socket.h>
33 #include <sys/sockio.h>
39 #include <net/if_var.h>
40 #include <netinet/in.h>
41 #include <netinet/in_var.h>
42 #include <netinet/ip_carp.h>
54 static const char *carp_states[] = { CARP_STATES };
56 static void carp_status(int s);
57 static void setcarp_vhid(const char *, int, int, const struct afswtch *rafp);
58 static void setcarp_callback(int, void *);
59 static void setcarp_advbase(const char *,int, int, const struct afswtch *rafp);
60 static void setcarp_advskew(const char *, int, int, const struct afswtch *rafp);
61 static void setcarp_passwd(const char *, int, int, const struct afswtch *rafp);
63 static int carpr_vhid = -1;
64 static int carpr_advskew = -1;
65 static int carpr_advbase = -1;
66 static int carpr_state = -1;
67 static unsigned char const *carpr_key;
72 struct carpreq carpr[CARP_MAXVHID];
75 bzero(carpr, sizeof(struct carpreq) * CARP_MAXVHID);
76 carpr[0].carpr_count = CARP_MAXVHID;
77 ifr.ifr_data = (caddr_t)&carpr;
79 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
82 for (i = 0; i < carpr[0].carpr_count; i++) {
83 printf("\tcarp: %s vhid %d advbase %d advskew %d",
84 carp_states[carpr[i].carpr_state], carpr[i].carpr_vhid,
85 carpr[i].carpr_advbase, carpr[i].carpr_advskew);
86 if (printkeys && carpr[i].carpr_key[0] != '\0')
87 printf(" key \"%s\"\n", carpr[i].carpr_key);
94 setcarp_vhid(const char *val, int d, int s, const struct afswtch *afp)
97 carpr_vhid = atoi(val);
99 if (carpr_vhid <= 0 || carpr_vhid > CARP_MAXVHID)
100 errx(1, "vhid must be greater than 0 and less than %u",
103 switch (afp->af_af) {
107 struct in_aliasreq *ifra;
109 ifra = (struct in_aliasreq *)afp->af_addreq;
110 ifra->ifra_vhid = carpr_vhid;
117 struct in6_aliasreq *ifra;
119 ifra = (struct in6_aliasreq *)afp->af_addreq;
120 ifra->ifra_vhid = carpr_vhid;
125 errx(1, "%s doesn't support carp(4)", afp->af_name);
128 callback_register(setcarp_callback, NULL);
132 setcarp_callback(int s, void *arg __unused)
134 struct carpreq carpr;
136 bzero(&carpr, sizeof(struct carpreq));
137 carpr.carpr_vhid = carpr_vhid;
138 carpr.carpr_count = 1;
139 ifr.ifr_data = (caddr_t)&carpr;
141 if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1 && errno != ENOENT)
144 if (carpr_key != NULL)
145 /* XXX Should hash the password into the key here? */
146 strlcpy(carpr.carpr_key, carpr_key, CARP_KEY_LEN);
147 if (carpr_advskew > -1)
148 carpr.carpr_advskew = carpr_advskew;
149 if (carpr_advbase > -1)
150 carpr.carpr_advbase = carpr_advbase;
151 if (carpr_state > -1)
152 carpr.carpr_state = carpr_state;
154 if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
159 setcarp_passwd(const char *val, int d, int s, const struct afswtch *afp)
162 if (carpr_vhid == -1)
163 errx(1, "passwd requires vhid");
169 setcarp_advskew(const char *val, int d, int s, const struct afswtch *afp)
172 if (carpr_vhid == -1)
173 errx(1, "advskew requires vhid");
175 carpr_advskew = atoi(val);
179 setcarp_advbase(const char *val, int d, int s, const struct afswtch *afp)
182 if (carpr_vhid == -1)
183 errx(1, "advbase requires vhid");
185 carpr_advbase = atoi(val);
189 setcarp_state(const char *val, int d, int s, const struct afswtch *afp)
193 if (carpr_vhid == -1)
194 errx(1, "state requires vhid");
196 for (i = 0; i <= CARP_MAXSTATE; i++)
197 if (strcasecmp(carp_states[i], val) == 0) {
202 errx(1, "unknown state");
205 static struct cmd carp_cmds[] = {
206 DEF_CMD_ARG("advbase", setcarp_advbase),
207 DEF_CMD_ARG("advskew", setcarp_advskew),
208 DEF_CMD_ARG("pass", setcarp_passwd),
209 DEF_CMD_ARG("vhid", setcarp_vhid),
210 DEF_CMD_ARG("state", setcarp_state),
212 static struct afswtch af_carp = {
213 .af_name = "af_carp",
215 .af_other_status = carp_status,
218 static __constructor void
221 #define N(a) (sizeof(a) / sizeof(a[0]))
224 for (i = 0; i < N(carp_cmds); i++)
225 cmd_register(&carp_cmds[i]);
226 af_register(&af_carp);