539 lines
14 KiB
C
539 lines
14 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. 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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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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 <net/if.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <ifaddrs.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <net/if_var.h> /* for struct ifaddr */
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#include <netinet/in_var.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
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#include "ifconfig.h"
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static struct in6_ifreq in6_ridreq;
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static struct in6_aliasreq in6_addreq =
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{ { 0 },
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{ 0 },
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{ 0 },
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{ 0 },
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0,
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{ 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
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static int ip6lifetime;
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static void in6_fillscopeid(struct sockaddr_in6 *sin6);
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static int prefix(void *, int);
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static char *sec2str(time_t);
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static int explicit_prefix = 0;
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static char addr_buf[MAXHOSTNAMELEN *2 + 1]; /*for getnameinfo()*/
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static void
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setifprefixlen(const char *addr, int dummy __unused, int s,
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const struct afswtch *afp)
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{
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if (afp->af_getprefix != NULL)
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afp->af_getprefix(addr, MASK);
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explicit_prefix = 1;
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}
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static void
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setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
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const struct afswtch *afp)
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{
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if (afp->af_af != AF_INET6)
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err(1, "address flags can be set only for inet6 addresses");
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if (flag < 0)
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in6_addreq.ifra_flags &= ~(-flag);
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else
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in6_addreq.ifra_flags |= flag;
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}
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static void
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setip6lifetime(const char *cmd, const char *val, int s,
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const struct afswtch *afp)
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{
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time_t newval, t;
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char *ep;
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t = time(NULL);
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newval = (time_t)strtoul(val, &ep, 0);
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if (val == ep)
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errx(1, "invalid %s", cmd);
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if (afp->af_af != AF_INET6)
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errx(1, "%s not allowed for the AF", cmd);
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if (strcmp(cmd, "vltime") == 0) {
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in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
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in6_addreq.ifra_lifetime.ia6t_vltime = newval;
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} else if (strcmp(cmd, "pltime") == 0) {
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in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
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in6_addreq.ifra_lifetime.ia6t_pltime = newval;
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}
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}
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static void
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setip6pltime(const char *seconds, int dummy __unused, int s,
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const struct afswtch *afp)
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{
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setip6lifetime("pltime", seconds, s, afp);
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}
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static void
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setip6vltime(const char *seconds, int dummy __unused, int s,
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const struct afswtch *afp)
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{
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setip6lifetime("vltime", seconds, s, afp);
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}
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static void
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setip6eui64(const char *cmd, int dummy __unused, int s,
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const struct afswtch *afp)
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{
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struct ifaddrs *ifap, *ifa;
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const struct sockaddr_in6 *sin6 = NULL;
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const struct in6_addr *lladdr = NULL;
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struct in6_addr *in6;
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if (afp->af_af != AF_INET6)
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errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
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in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
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if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
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errx(EXIT_FAILURE, "interface index is already filled");
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if (getifaddrs(&ifap) != 0)
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err(EXIT_FAILURE, "getifaddrs");
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for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr->sa_family == AF_INET6 &&
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strcmp(ifa->ifa_name, name) == 0) {
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sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
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if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
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lladdr = &sin6->sin6_addr;
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break;
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}
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}
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}
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if (!lladdr)
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errx(EXIT_FAILURE, "could not determine link local address");
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memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
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freeifaddrs(ifap);
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}
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static void
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in6_fillscopeid(struct sockaddr_in6 *sin6)
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{
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#if defined(__KAME__) && defined(KAME_SCOPEID)
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if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
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sin6->sin6_scope_id =
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ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
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sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
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}
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#endif
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}
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static void
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in6_status(int s __unused, const struct ifaddrs *ifa)
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{
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struct sockaddr_in6 *sin, null_sin;
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struct in6_ifreq ifr6;
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int s6;
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u_int32_t flags6;
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struct in6_addrlifetime lifetime;
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time_t t = time(NULL);
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int error;
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u_int32_t scopeid;
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memset(&null_sin, 0, sizeof(null_sin));
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sin = (struct sockaddr_in6 *)ifa->ifa_addr;
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if (sin == NULL)
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return;
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strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
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if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
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warn("socket(AF_INET6,SOCK_DGRAM)");
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return;
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}
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ifr6.ifr_addr = *sin;
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if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
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warn("ioctl(SIOCGIFAFLAG_IN6)");
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close(s6);
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return;
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}
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flags6 = ifr6.ifr_ifru.ifru_flags6;
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memset(&lifetime, 0, sizeof(lifetime));
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ifr6.ifr_addr = *sin;
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if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
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warn("ioctl(SIOCGIFALIFETIME_IN6)");
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close(s6);
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return;
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}
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lifetime = ifr6.ifr_ifru.ifru_lifetime;
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close(s6);
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/* XXX: embedded link local addr check */
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if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
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*(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
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u_short index;
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index = *(u_short *)&sin->sin6_addr.s6_addr[2];
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*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
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if (sin->sin6_scope_id == 0)
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sin->sin6_scope_id = ntohs(index);
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}
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scopeid = sin->sin6_scope_id;
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error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
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sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
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if (error != 0)
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inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
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sizeof(addr_buf));
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printf("\tinet6 %s ", addr_buf);
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if (ifa->ifa_flags & IFF_POINTOPOINT) {
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sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
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/*
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* some of the interfaces do not have valid destination
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* address.
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*/
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if (sin != NULL && sin->sin6_family == AF_INET6) {
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int error;
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/* XXX: embedded link local addr check */
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if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
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*(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
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u_short index;
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index = *(u_short *)&sin->sin6_addr.s6_addr[2];
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*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
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if (sin->sin6_scope_id == 0)
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sin->sin6_scope_id = ntohs(index);
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}
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error = getnameinfo((struct sockaddr *)sin,
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sin->sin6_len, addr_buf,
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sizeof(addr_buf), NULL, 0,
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NI_NUMERICHOST);
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if (error != 0)
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inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
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sizeof(addr_buf));
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printf("--> %s ", addr_buf);
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}
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}
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sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
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if (sin == NULL)
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sin = &null_sin;
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printf("prefixlen %d ", prefix(&sin->sin6_addr,
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sizeof(struct in6_addr)));
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if ((flags6 & IN6_IFF_ANYCAST) != 0)
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printf("anycast ");
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if ((flags6 & IN6_IFF_TENTATIVE) != 0)
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printf("tentative ");
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if ((flags6 & IN6_IFF_DUPLICATED) != 0)
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printf("duplicated ");
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if ((flags6 & IN6_IFF_DETACHED) != 0)
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printf("detached ");
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if ((flags6 & IN6_IFF_DEPRECATED) != 0)
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printf("deprecated ");
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if ((flags6 & IN6_IFF_AUTOCONF) != 0)
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printf("autoconf ");
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if ((flags6 & IN6_IFF_TEMPORARY) != 0)
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printf("temporary ");
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if (scopeid)
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printf("scopeid 0x%x ", scopeid);
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if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
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printf("pltime ");
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if (lifetime.ia6t_preferred) {
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printf("%s ", lifetime.ia6t_preferred < t
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? "0" : sec2str(lifetime.ia6t_preferred - t));
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} else
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printf("infty ");
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printf("vltime ");
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if (lifetime.ia6t_expire) {
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printf("%s ", lifetime.ia6t_expire < t
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? "0" : sec2str(lifetime.ia6t_expire - t));
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} else
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printf("infty ");
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}
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putchar('\n');
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}
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#define SIN6(x) ((struct sockaddr_in6 *) &(x))
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static struct sockaddr_in6 *sin6tab[] = {
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SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
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SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
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};
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static void
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in6_getprefix(const char *plen, int which)
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{
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struct sockaddr_in6 *sin = sin6tab[which];
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u_char *cp;
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int len = atoi(plen);
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if ((len < 0) || (len > 128))
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errx(1, "%s: bad value", plen);
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sin->sin6_len = sizeof(*sin);
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if (which != MASK)
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sin->sin6_family = AF_INET6;
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if ((len == 0) || (len == 128)) {
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memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
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return;
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}
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memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
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for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
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*cp++ = 0xff;
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*cp = 0xff << (8 - len);
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}
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static void
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in6_getaddr(const char *s, int which)
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{
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struct sockaddr_in6 *sin = sin6tab[which];
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struct addrinfo hints, *res;
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int error = -1;
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newaddr &= 1;
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sin->sin6_len = sizeof(*sin);
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if (which != MASK)
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sin->sin6_family = AF_INET6;
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if (which == ADDR) {
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char *p = NULL;
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if((p = strrchr(s, '/')) != NULL) {
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*p = '\0';
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in6_getprefix(p + 1, MASK);
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explicit_prefix = 1;
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}
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}
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if (sin->sin6_family == AF_INET6) {
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bzero(&hints, sizeof(struct addrinfo));
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hints.ai_family = AF_INET6;
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error = getaddrinfo(s, NULL, &hints, &res);
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}
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if (error != 0) {
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if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
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errx(1, "%s: bad value", s);
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} else
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bcopy(res->ai_addr, sin, res->ai_addrlen);
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}
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static int
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prefix(void *val, int size)
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{
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u_char *name = (u_char *)val;
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int byte, bit, plen = 0;
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for (byte = 0; byte < size; byte++, plen += 8)
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if (name[byte] != 0xff)
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break;
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if (byte == size)
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return (plen);
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for (bit = 7; bit != 0; bit--, plen++)
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if (!(name[byte] & (1 << bit)))
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break;
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for (; bit != 0; bit--)
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if (name[byte] & (1 << bit))
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return(0);
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byte++;
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for (; byte < size; byte++)
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if (name[byte])
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return(0);
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return (plen);
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}
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static char *
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sec2str(time_t total)
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{
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static char result[256];
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int days, hours, mins, secs;
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int first = 1;
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char *p = result;
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if (0) {
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days = total / 3600 / 24;
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hours = (total / 3600) % 24;
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mins = (total / 60) % 60;
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secs = total % 60;
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if (days) {
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first = 0;
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p += sprintf(p, "%dd", days);
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}
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if (!first || hours) {
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first = 0;
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p += sprintf(p, "%dh", hours);
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}
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if (!first || mins) {
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first = 0;
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p += sprintf(p, "%dm", mins);
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}
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sprintf(p, "%ds", secs);
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} else
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sprintf(result, "%lu", (unsigned long)total);
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return(result);
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}
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static void
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in6_postproc(int s, const struct afswtch *afp)
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{
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if (explicit_prefix == 0) {
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/* Aggregatable address architecture defines all prefixes
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are 64. So, it is convenient to set prefixlen to 64 if
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it is not specified. */
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setifprefixlen("64", 0, s, afp);
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/* in6_getprefix("64", MASK) if MASK is available here... */
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}
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}
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static void
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in6_status_tunnel(int s)
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{
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char src[NI_MAXHOST];
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char dst[NI_MAXHOST];
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struct in6_ifreq in6_ifr;
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const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;
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memset(&in6_ifr, 0, sizeof(in6_ifr));
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strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
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if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
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return;
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if (sa->sa_family != AF_INET6)
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return;
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in6_fillscopeid(&in6_ifr.ifr_addr);
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if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
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NI_NUMERICHOST) != 0)
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src[0] = '\0';
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if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
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return;
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if (sa->sa_family != AF_INET6)
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return;
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in6_fillscopeid(&in6_ifr.ifr_addr);
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if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
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NI_NUMERICHOST) != 0)
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dst[0] = '\0';
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printf("\ttunnel inet6 %s --> %s\n", src, dst);
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}
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static void
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in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
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{
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struct in6_aliasreq in6_addreq;
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memset(&in6_addreq, 0, sizeof(in6_addreq));
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strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
|
|
memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
|
|
memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
|
|
dstres->ai_addr->sa_len);
|
|
|
|
if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
|
|
warn("SIOCSIFPHYADDR_IN6");
|
|
}
|
|
|
|
static struct cmd inet6_cmds[] = {
|
|
DEF_CMD_ARG("prefixlen", setifprefixlen),
|
|
DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
|
|
DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
|
|
DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
|
|
DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
|
|
DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
|
|
DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
|
|
DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
|
|
DEF_CMD_ARG("pltime", setip6pltime),
|
|
DEF_CMD_ARG("vltime", setip6vltime),
|
|
DEF_CMD("eui64", 0, setip6eui64),
|
|
};
|
|
|
|
static struct afswtch af_inet6 = {
|
|
.af_name = "inet6",
|
|
.af_af = AF_INET6,
|
|
.af_status = in6_status,
|
|
.af_getaddr = in6_getaddr,
|
|
.af_getprefix = in6_getprefix,
|
|
.af_postproc = in6_postproc,
|
|
.af_status_tunnel = in6_status_tunnel,
|
|
.af_settunnel = in6_set_tunnel,
|
|
.af_difaddr = SIOCDIFADDR_IN6,
|
|
.af_aifaddr = SIOCAIFADDR_IN6,
|
|
.af_ridreq = &in6_addreq,
|
|
.af_addreq = &in6_addreq,
|
|
};
|
|
|
|
static void
|
|
in6_Lopt_cb(const char *optarg __unused)
|
|
{
|
|
ip6lifetime++; /* print IPv6 address lifetime */
|
|
}
|
|
static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
|
|
|
|
static __constructor void
|
|
inet6_ctor(void)
|
|
{
|
|
#define N(a) (sizeof(a) / sizeof(a[0]))
|
|
int i;
|
|
|
|
for (i = 0; i < N(inet6_cmds); i++)
|
|
cmd_register(&inet6_cmds[i]);
|
|
af_register(&af_inet6);
|
|
opt_register(&in6_Lopt);
|
|
#undef N
|
|
}
|