[apple/network_cmds.git] / ifconfig.tproj / af_inet6.c

/*
 * Copyright (c) 2009 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  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.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 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.
 */

#ifndef lint
static const char rcsid[] =
  "$FreeBSD: src/sbin/ifconfig/af_inet6.c,v 1.6.6.1 2008/11/25 02:59:29 kensmith Exp $";
#endif /* not lint */

#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ifaddrs.h>

#include <arpa/inet.h>

#include <netinet/in.h>
#include <net/if_var.h>		/* for struct ifaddr */
#include <netinet/in_var.h>
#include <arpa/inet.h>
#include <netdb.h>

#include <netinet6/nd6.h>	/* Define ND6_INFINITE_LIFETIME */

#include "ifconfig.h"

static	struct in6_ifreq in6_ridreq;
static	struct in6_aliasreq in6_addreq = 
  { { 0 }, 
    { 0 }, 
    { 0 }, 
    { 0 }, 
    0, 
    { 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
static	int ip6lifetime;

static	void in6_fillscopeid(struct sockaddr_in6 *sin6);
static	int prefix(void *, int);
static	char *sec2str(time_t);
static	int explicit_prefix = 0;

static	char addr_buf[MAXHOSTNAMELEN *2 + 1];	/*for getnameinfo()*/

static void
setifprefixlen(const char *addr, int dummy __unused, int s,
    const struct afswtch *afp)
{
        if (afp->af_getprefix != NULL)
                afp->af_getprefix(addr, MASK);
	explicit_prefix = 1;
}

static void
setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
    const struct afswtch *afp)
{
	if (afp->af_af != AF_INET6)
		err(1, "address flags can be set only for inet6 addresses");

	if (flag < 0)
		in6_addreq.ifra_flags &= ~(-flag);
	else
		in6_addreq.ifra_flags |= flag;
}

static void
setip6lifetime(const char *cmd, const char *val, int s, 
    const struct afswtch *afp)
{
	time_t newval, t;
	char *ep;

	t = time(NULL);
	newval = (time_t)strtoul(val, &ep, 0);
	if (val == ep)
		errx(1, "invalid %s", cmd);
	if (afp->af_af != AF_INET6)
		errx(1, "%s not allowed for the AF", cmd);
	if (strcmp(cmd, "vltime") == 0) {
		in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
		in6_addreq.ifra_lifetime.ia6t_vltime = newval;
	} else if (strcmp(cmd, "pltime") == 0) {
		in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
		in6_addreq.ifra_lifetime.ia6t_pltime = newval;
	}
}

static void
setip6pltime(const char *seconds, int dummy __unused, int s, 
    const struct afswtch *afp)
{
	setip6lifetime("pltime", seconds, s, afp);
}

static void
setip6vltime(const char *seconds, int dummy __unused, int s, 
    const struct afswtch *afp)
{
	setip6lifetime("vltime", seconds, s, afp);
}

static void
setip6eui64(const char *cmd, int dummy __unused, int s,
    const struct afswtch *afp)
{
	struct ifaddrs *ifap, *ifa;
	const struct sockaddr_in6 *sin6 = NULL;
	const struct in6_addr *lladdr = NULL;
	struct in6_addr *in6;

	if (afp->af_af != AF_INET6)
		errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
 	in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
	if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
		errx(EXIT_FAILURE, "interface index is already filled");
	if (getifaddrs(&ifap) != 0)
		err(EXIT_FAILURE, "getifaddrs");
	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
		if (ifa->ifa_addr->sa_family == AF_INET6 &&
		    strcmp(ifa->ifa_name, name) == 0) {
			sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
			if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
				lladdr = &sin6->sin6_addr;
				break;
			}
		}
	}
	if (!lladdr)
		errx(EXIT_FAILURE, "could not determine link local address"); 

 	memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);

	freeifaddrs(ifap);
}

static void
in6_fillscopeid(struct sockaddr_in6 *sin6)
{
#if defined(__KAME__) && defined(KAME_SCOPEID)
	if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
		sin6->sin6_scope_id =
			ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]);
		sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
	}
#endif
}

static void
in6_status(int s __unused, const struct ifaddrs *ifa)
{
	struct sockaddr_in6 *sin, null_sin;
	struct in6_ifreq ifr6;
	int s6;
	u_int32_t flags6;
	struct in6_addrlifetime lifetime;
	time_t t = time(NULL);
	int error;
	u_int32_t scopeid;

	memset(&null_sin, 0, sizeof(null_sin));

	sin = (struct sockaddr_in6 *)ifa->ifa_addr;
	if (sin == NULL)
		return;

	strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
	if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
		warn("socket(AF_INET6,SOCK_DGRAM)");
		return;
	}
	ifr6.ifr_addr = *sin;
	if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
		warn("ioctl(SIOCGIFAFLAG_IN6)");
		close(s6);
		return;
	}
	flags6 = ifr6.ifr_ifru.ifru_flags6;
	memset(&lifetime, 0, sizeof(lifetime));
	ifr6.ifr_addr = *sin;
	if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
		warn("ioctl(SIOCGIFALIFETIME_IN6)");
		close(s6);
		return;
	}
	lifetime = ifr6.ifr_ifru.ifru_lifetime;
	close(s6);

	/* XXX: embedded link local addr check */
	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
	    *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
		u_short index;

		index = *(u_short *)&sin->sin6_addr.s6_addr[2];
		*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
		if (sin->sin6_scope_id == 0)
			sin->sin6_scope_id = ntohs(index);
	}
	scopeid = sin->sin6_scope_id;

	error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
			    sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
	if (error != 0)
		inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
			  sizeof(addr_buf));
	printf("\tinet6 %s ", addr_buf);

	if (ifa->ifa_flags & IFF_POINTOPOINT) {
		sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
		/*
		 * some of the interfaces do not have valid destination
		 * address.
		 */
		if (sin != NULL && sin->sin6_family == AF_INET6) {
			int error;

			/* XXX: embedded link local addr check */
			if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
			    *(u_short *)&sin->sin6_addr.s6_addr[2] != 0) {
				u_short index;

				index = *(u_short *)&sin->sin6_addr.s6_addr[2];
				*(u_short *)&sin->sin6_addr.s6_addr[2] = 0;
				if (sin->sin6_scope_id == 0)
					sin->sin6_scope_id = ntohs(index);
			}

			error = getnameinfo((struct sockaddr *)sin,
					    sin->sin6_len, addr_buf,
					    sizeof(addr_buf), NULL, 0,
					    NI_NUMERICHOST);
			if (error != 0)
				inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
					  sizeof(addr_buf));
			printf("--> %s ", addr_buf);
		}
	}

	sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
	if (sin == NULL)
		sin = &null_sin;
	printf("prefixlen %d ", prefix(&sin->sin6_addr,
		sizeof(struct in6_addr)));

	if ((flags6 & IN6_IFF_ANYCAST) != 0)
		printf("anycast ");
	if ((flags6 & IN6_IFF_TENTATIVE) != 0)
		printf("tentative ");
	if ((flags6 & IN6_IFF_DUPLICATED) != 0)
		printf("duplicated ");
	if ((flags6 & IN6_IFF_DETACHED) != 0)
		printf("detached ");
	if ((flags6 & IN6_IFF_DEPRECATED) != 0)
		printf("deprecated ");
	if ((flags6 & IN6_IFF_AUTOCONF) != 0)
		printf("autoconf ");
	if ((flags6 & IN6_IFF_TEMPORARY) != 0)
		printf("temporary ");

        if (scopeid)
		printf("scopeid 0x%x ", scopeid);

	if (ip6lifetime && (lifetime.ia6t_preferred || lifetime.ia6t_expire)) {
		printf("pltime ");
		if (lifetime.ia6t_preferred) {
			printf("%s ", lifetime.ia6t_preferred < t
				? "0" : sec2str(lifetime.ia6t_preferred - t));
		} else
			printf("infty ");

		printf("vltime ");
		if (lifetime.ia6t_expire) {
			printf("%s ", lifetime.ia6t_expire < t
				? "0" : sec2str(lifetime.ia6t_expire - t));
		} else
			printf("infty ");
	}

	putchar('\n');
}

#define	SIN6(x) ((struct sockaddr_in6 *) &(x))
static struct	sockaddr_in6 *sin6tab[] = {
	SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
	SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
};

static void
in6_getprefix(const char *plen, int which)
{
	struct sockaddr_in6 *sin = sin6tab[which];
	u_char *cp;
	int len = atoi(plen);

	if ((len < 0) || (len > 128))
		errx(1, "%s: bad value", plen);
	sin->sin6_len = sizeof(*sin);
	if (which != MASK)
		sin->sin6_family = AF_INET6;
	if ((len == 0) || (len == 128)) {
		memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
		return;
	}
	memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
	for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
		*cp++ = 0xff;
	*cp = 0xff << (8 - len);
}

static void
in6_getaddr(const char *s, int which)
{
	struct sockaddr_in6 *sin = sin6tab[which];
	struct addrinfo hints, *res;
	int error = -1;

	newaddr &= 1;

	sin->sin6_len = sizeof(*sin);
	if (which != MASK)
		sin->sin6_family = AF_INET6;

	if (which == ADDR) {
		char *p = NULL;
		if((p = strrchr(s, '/')) != NULL) {
			*p = '\0';
			in6_getprefix(p + 1, MASK);
			explicit_prefix = 1;
		}
	}

	if (sin->sin6_family == AF_INET6) {
		bzero(&hints, sizeof(struct addrinfo));
		hints.ai_family = AF_INET6;
		error = getaddrinfo(s, NULL, &hints, &res);
	}
	if (error != 0) {
		if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
			errx(1, "%s: bad value", s);
	} else
		bcopy(res->ai_addr, sin, res->ai_addrlen);
}

static int
prefix(void *val, int size)
{
        u_char *name = (u_char *)val;
        int byte, bit, plen = 0;

        for (byte = 0; byte < size; byte++, plen += 8)
                if (name[byte] != 0xff)
                        break;
	if (byte == size)
		return (plen);
	for (bit = 7; bit != 0; bit--, plen++)
                if (!(name[byte] & (1 << bit)))
                        break;
        for (; bit != 0; bit--)
                if (name[byte] & (1 << bit))
                        return(0);
        byte++;
        for (; byte < size; byte++)
                if (name[byte])
                        return(0);
        return (plen);
}

static char *
sec2str(time_t total)
{
	static char result[256];
	int days, hours, mins, secs;
	int first = 1;
	char *p = result;

	if (0) {
		days = total / 3600 / 24;
		hours = (total / 3600) % 24;
		mins = (total / 60) % 60;
		secs = total % 60;

		if (days) {
			first = 0;
			p += snprintf(p, sizeof(result) - (p - result), "%dd", days);
		}
		if (!first || hours) {
			first = 0;
			p += snprintf(p, sizeof(result) - (p - result), "%dh", hours);
		}
		if (!first || mins) {
			first = 0;
			p += snprintf(p, sizeof(result) - (p - result), "%dm", mins);
		}
		snprintf(p, sizeof(result) - (p - result), "%ds", secs);
	} else
		snprintf(result, sizeof(result), "%lu", (unsigned long)total);

	return(result);
}

static void
in6_postproc(int s, const struct afswtch *afp)
{
	if (explicit_prefix == 0) {
		/* Aggregatable address architecture defines all prefixes
		   are 64. So, it is convenient to set prefixlen to 64 if
		   it is not specified. */
		setifprefixlen("64", 0, s, afp);
		/* in6_getprefix("64", MASK) if MASK is available here... */
	}
}

static void
in6_status_tunnel(int s)
{
	char src[NI_MAXHOST];
	char dst[NI_MAXHOST];
	struct in6_ifreq in6_ifr;
	const struct sockaddr *sa = (const struct sockaddr *) &in6_ifr.ifr_addr;

	memset(&in6_ifr, 0, sizeof(in6_ifr));
	strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);

	if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
		return;
	if (sa->sa_family != AF_INET6)
		return;
	in6_fillscopeid(&in6_ifr.ifr_addr);
	if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
	    NI_NUMERICHOST) != 0)
		src[0] = '\0';

	if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
		return;
	if (sa->sa_family != AF_INET6)
		return;
	in6_fillscopeid(&in6_ifr.ifr_addr);
	if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
	    NI_NUMERICHOST) != 0)
		dst[0] = '\0';

	printf("\ttunnel inet6 %s --> %s\n", src, dst);
}

static void
in6_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
{
	struct in6_aliasreq in6_addreq; 

	memset(&in6_addreq, 0, sizeof(in6_addreq));
	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
}
Commit	Line	Data
fdfd5971 A	1	/*
	2	* Copyright (c) 2009 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
8d01c344 A	29	/*
	30	* Copyright (c) 1983, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*/
	57
	58	#ifndef lint
	59	static const char rcsid[] =
	60	"$FreeBSD: src/sbin/ifconfig/af_inet6.c,v 1.6.6.1 2008/11/25 02:59:29 kensmith Exp $";
	61	#endif /* not lint */
	62
	63	#include <sys/param.h>
	64	#include <sys/ioctl.h>
	65	#include <sys/socket.h>
	66	#include <net/if.h>
	67
	68	#include <err.h>
	69	#include <stdio.h>
	70	#include <stdlib.h>
	71	#include <string.h>
	72	#include <unistd.h>
	73	#include <ifaddrs.h>
	74
	75	#include <arpa/inet.h>
	76
	77	#include <netinet/in.h>
	78	#include <net/if_var.h> /* for struct ifaddr */
	79	#include <netinet/in_var.h>
	80	#include <arpa/inet.h>
	81	#include <netdb.h>
	82
	83	#include <netinet6/nd6.h> /* Define ND6_INFINITE_LIFETIME */
	84
	85	#include "ifconfig.h"
	86
	87	static struct in6_ifreq in6_ridreq;
	88	static struct in6_aliasreq in6_addreq =
	89	{ { 0 },
	90	{ 0 },
	91	{ 0 },
	92	{ 0 },
93	0,
94	{ 0, 0, ND6_INFINITE_LIFETIME, ND6_INFINITE_LIFETIME } };
95	static int ip6lifetime;
96
97	static void in6_fillscopeid(struct sockaddr_in6 *sin6);
98	static int prefix(void *, int);
99	static char *sec2str(time_t);
100	static int explicit_prefix = 0;
101
102	static char addr_buf[MAXHOSTNAMELEN 2 + 1]; /for getnameinfo()*/
103
104	static void
105	setifprefixlen(const char *addr, int dummy __unused, int s,
106	const struct afswtch *afp)
107	{
108	if (afp->af_getprefix != NULL)
109	afp->af_getprefix(addr, MASK);
110	explicit_prefix = 1;
111	}
112
113	static void
114	setip6flags(const char *dummyaddr __unused, int flag, int dummysoc __unused,
115	const struct afswtch *afp)
116	{
117	if (afp->af_af != AF_INET6)
118	err(1, "address flags can be set only for inet6 addresses");
119
120	if (flag < 0)
121	in6_addreq.ifra_flags &= ~(-flag);
122	else
123	in6_addreq.ifra_flags \|= flag;
124	}
125
126	static void
127	setip6lifetime(const char cmd, const char val, int s,
128	const struct afswtch *afp)
129	{
130	time_t newval, t;
131	char *ep;
132
133	t = time(NULL);
134	newval = (time_t)strtoul(val, &ep, 0);
135	if (val == ep)
136	errx(1, "invalid %s", cmd);
137	if (afp->af_af != AF_INET6)
138	errx(1, "%s not allowed for the AF", cmd);
139	if (strcmp(cmd, "vltime") == 0) {
140	in6_addreq.ifra_lifetime.ia6t_expire = t + newval;
141	in6_addreq.ifra_lifetime.ia6t_vltime = newval;
142	} else if (strcmp(cmd, "pltime") == 0) {
143	in6_addreq.ifra_lifetime.ia6t_preferred = t + newval;
144	in6_addreq.ifra_lifetime.ia6t_pltime = newval;
145	}
146	}
147
148	static void
149	setip6pltime(const char *seconds, int dummy __unused, int s,
150	const struct afswtch *afp)
151	{
152	setip6lifetime("pltime", seconds, s, afp);
153	}
154
155	static void
156	setip6vltime(const char *seconds, int dummy __unused, int s,
157	const struct afswtch *afp)
158	{
159	setip6lifetime("vltime", seconds, s, afp);
160	}
161
162	static void
163	setip6eui64(const char *cmd, int dummy __unused, int s,
164	const struct afswtch *afp)
165	{
166	struct ifaddrs ifap, ifa;
167	const struct sockaddr_in6 *sin6 = NULL;
168	const struct in6_addr *lladdr = NULL;
169	struct in6_addr *in6;
170
171	if (afp->af_af != AF_INET6)
172	errx(EXIT_FAILURE, "%s not allowed for the AF", cmd);
173	in6 = (struct in6_addr *)&in6_addreq.ifra_addr.sin6_addr;
174	if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0)
175	errx(EXIT_FAILURE, "interface index is already filled");
176	if (getifaddrs(&ifap) != 0)
177	err(EXIT_FAILURE, "getifaddrs");
178	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
179	if (ifa->ifa_addr->sa_family == AF_INET6 &&
180	strcmp(ifa->ifa_name, name) == 0) {
181	sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
182	if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
183	lladdr = &sin6->sin6_addr;
184	break;
185	}
186	}
187	}
188	if (!lladdr)
189	errx(EXIT_FAILURE, "could not determine link local address");
190
191	memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
192
193	freeifaddrs(ifap);
194	}
195
196	static void
197	in6_fillscopeid(struct sockaddr_in6 *sin6)
198	{
199	#if defined(__KAME__) && defined(KAME_SCOPEID)
200	if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
201	sin6->sin6_scope_id =
202	ntohs((u_int16_t )&sin6->sin6_addr.s6_addr[2]);
203	sin6->sin6_addr.s6_addr[2] = sin6->sin6_addr.s6_addr[3] = 0;
204	}
205	#endif
206	}
207
208	static void
209	in6_status(int s __unused, const struct ifaddrs *ifa)
210	{
211	struct sockaddr_in6 *sin, null_sin;
212	struct in6_ifreq ifr6;
213	int s6;
214	u_int32_t flags6;
215	struct in6_addrlifetime lifetime;
216	time_t t = time(NULL);
217	int error;
218	u_int32_t scopeid;
219
220	memset(&null_sin, 0, sizeof(null_sin));
221
222	sin = (struct sockaddr_in6 *)ifa->ifa_addr;
223	if (sin == NULL)
224	return;
225
226	strncpy(ifr6.ifr_name, ifr.ifr_name, sizeof(ifr.ifr_name));
227	if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
228	warn("socket(AF_INET6,SOCK_DGRAM)");
229	return;
230	}
231	ifr6.ifr_addr = *sin;
232	if (ioctl(s6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
233	warn("ioctl(SIOCGIFAFLAG_IN6)");
234	close(s6);
235	return;
236	}
237	flags6 = ifr6.ifr_ifru.ifru_flags6;
238	memset(&lifetime, 0, sizeof(lifetime));
239	ifr6.ifr_addr = *sin;
240	if (ioctl(s6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
241	warn("ioctl(SIOCGIFALIFETIME_IN6)");
242	close(s6);
243	return;
244	}
245	lifetime = ifr6.ifr_ifru.ifru_lifetime;
246	close(s6);
247
248	/* XXX: embedded link local addr check */
249	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
250	(u_short )&sin->sin6_addr.s6_addr[2] != 0) {
251	u_short index;
252
253	index = (u_short )&sin->sin6_addr.s6_addr[2];
254	(u_short )&sin->sin6_addr.s6_addr[2] = 0;
255	if (sin->sin6_scope_id == 0)
256	sin->sin6_scope_id = ntohs(index);
257	}
258	scopeid = sin->sin6_scope_id;
259
260	error = getnameinfo((struct sockaddr *)sin, sin->sin6_len, addr_buf,
261	sizeof(addr_buf), NULL, 0, NI_NUMERICHOST);
262	if (error != 0)
263	inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
264	sizeof(addr_buf));
265	printf("\tinet6 %s ", addr_buf);
266
267	if (ifa->ifa_flags & IFF_POINTOPOINT) {
268	sin = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
269	/*
270	* some of the interfaces do not have valid destination
271	* address.
272	*/
273	if (sin != NULL && sin->sin6_family == AF_INET6) {
274	int error;
275
276	/* XXX: embedded link local addr check */
277	if (IN6_IS_ADDR_LINKLOCAL(&sin->sin6_addr) &&
278	(u_short )&sin->sin6_addr.s6_addr[2] != 0) {
279	u_short index;
280
281	index = (u_short )&sin->sin6_addr.s6_addr[2];
282	(u_short )&sin->sin6_addr.s6_addr[2] = 0;
283	if (sin->sin6_scope_id == 0)
284	sin->sin6_scope_id = ntohs(index);
285	}
286
287	error = getnameinfo((struct sockaddr *)sin,
288	sin->sin6_len, addr_buf,
289	sizeof(addr_buf), NULL, 0,
290	NI_NUMERICHOST);
291	if (error != 0)
292	inet_ntop(AF_INET6, &sin->sin6_addr, addr_buf,
293	sizeof(addr_buf));
294	printf("--> %s ", addr_buf);
295	}
296	}
297
298	sin = (struct sockaddr_in6 *)ifa->ifa_netmask;
299	if (sin == NULL)
300	sin = &null_sin;
301	printf("prefixlen %d ", prefix(&sin->sin6_addr,
302	sizeof(struct in6_addr)));
303
304	if ((flags6 & IN6_IFF_ANYCAST) != 0)
305	printf("anycast ");
306	if ((flags6 & IN6_IFF_TENTATIVE) != 0)
307	printf("tentative ");
308	if ((flags6 & IN6_IFF_DUPLICATED) != 0)
309	printf("duplicated ");
310	if ((flags6 & IN6_IFF_DETACHED) != 0)
311	printf("detached ");
312	if ((flags6 & IN6_IFF_DEPRECATED) != 0)
313	printf("deprecated ");
314	if ((flags6 & IN6_IFF_AUTOCONF) != 0)
315	printf("autoconf ");
316	if ((flags6 & IN6_IFF_TEMPORARY) != 0)
317	printf("temporary ");
318
319	if (scopeid)
320	printf("scopeid 0x%x ", scopeid);
321
322	if (ip6lifetime && (lifetime.ia6t_preferred \|\| lifetime.ia6t_expire)) {
323	printf("pltime ");
324	if (lifetime.ia6t_preferred) {
325	printf("%s ", lifetime.ia6t_preferred < t
326	? "0" : sec2str(lifetime.ia6t_preferred - t));
327	} else
328	printf("infty ");
329
330	printf("vltime ");
331	if (lifetime.ia6t_expire) {
332	printf("%s ", lifetime.ia6t_expire < t
333	? "0" : sec2str(lifetime.ia6t_expire - t));
334	} else
335	printf("infty ");
336	}
337
338	putchar('\n');
339	}
340
341	#define SIN6(x) ((struct sockaddr_in6 *) &(x))
342	static struct sockaddr_in6 *sin6tab[] = {
343	SIN6(in6_ridreq.ifr_addr), SIN6(in6_addreq.ifra_addr),
344	SIN6(in6_addreq.ifra_prefixmask), SIN6(in6_addreq.ifra_dstaddr)
345	};
346
347	static void
348	in6_getprefix(const char *plen, int which)
349	{
350	struct sockaddr_in6 *sin = sin6tab[which];
351	u_char *cp;
352	int len = atoi(plen);
353
354	if ((len < 0) \|\| (len > 128))
355	errx(1, "%s: bad value", plen);
356	sin->sin6_len = sizeof(*sin);
357	if (which != MASK)
358	sin->sin6_family = AF_INET6;
359	if ((len == 0) \|\| (len == 128)) {
360	memset(&sin->sin6_addr, 0xff, sizeof(struct in6_addr));
361	return;
362	}
363	memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr));
364	for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8)
365	*cp++ = 0xff;
366	*cp = 0xff << (8 - len);
367	}
368
369	static void
370	in6_getaddr(const char *s, int which)
371	{
372	struct sockaddr_in6 *sin = sin6tab[which];
373	struct addrinfo hints, *res;
374	int error = -1;
375
376	newaddr &= 1;
377
378	sin->sin6_len = sizeof(*sin);
379	if (which != MASK)
380	sin->sin6_family = AF_INET6;
381
382	if (which == ADDR) {
383	char *p = NULL;
384	if((p = strrchr(s, '/')) != NULL) {
385	*p = '\0';
386	in6_getprefix(p + 1, MASK);
387	explicit_prefix = 1;
388	}
389	}
390
391	if (sin->sin6_family == AF_INET6) {
392	bzero(&hints, sizeof(struct addrinfo));
393	hints.ai_family = AF_INET6;
394	error = getaddrinfo(s, NULL, &hints, &res);
395	}
396	if (error != 0) {
397	if (inet_pton(AF_INET6, s, &sin->sin6_addr) != 1)
398	errx(1, "%s: bad value", s);
399	} else
400	bcopy(res->ai_addr, sin, res->ai_addrlen);
401	}
402
403	static int
404	prefix(void *val, int size)
405	{
406	u_char name = (u_char )val;
407	int byte, bit, plen = 0;
408
409	for (byte = 0; byte < size; byte++, plen += 8)
410	if (name[byte] != 0xff)
411	break;
412	if (byte == size)
413	return (plen);
414	for (bit = 7; bit != 0; bit--, plen++)
415	if (!(name[byte] & (1 << bit)))
416	break;
417	for (; bit != 0; bit--)
418	if (name[byte] & (1 << bit))
419	return(0);
420	byte++;
421	for (; byte < size; byte++)
422	if (name[byte])
423	return(0);
424	return (plen);
425	}
426
427	static char *
428	sec2str(time_t total)
429	{
430	static char result[256];
431	int days, hours, mins, secs;
432	int first = 1;
433	char *p = result;
434
435	if (0) {
436	days = total / 3600 / 24;
437	hours = (total / 3600) % 24;
438	mins = (total / 60) % 60;
439	secs = total % 60;
440
441	if (days) {
442	first = 0;
fdfd5971	443	p += snprintf(p, sizeof(result) - (p - result), "%dd", days);
8d01c344 A	444	}
	445	if (!first \|\| hours) {
	446	first = 0;
fdfd5971	447	p += snprintf(p, sizeof(result) - (p - result), "%dh", hours);
8d01c344 A	448	}
	449	if (!first \|\| mins) {
	450	first = 0;
fdfd5971	451	p += snprintf(p, sizeof(result) - (p - result), "%dm", mins);
8d01c344	452	}
fdfd5971	453	snprintf(p, sizeof(result) - (p - result), "%ds", secs);
8d01c344	454	} else
fdfd5971	455	snprintf(result, sizeof(result), "%lu", (unsigned long)total);
8d01c344 A	456
	457	return(result);
	458	}
	459
	460	static void
	461	in6_postproc(int s, const struct afswtch *afp)
	462	{
	463	if (explicit_prefix == 0) {
	464	/* Aggregatable address architecture defines all prefixes
	465	are 64. So, it is convenient to set prefixlen to 64 if
	466	it is not specified. */
	467	setifprefixlen("64", 0, s, afp);
	468	/* in6_getprefix("64", MASK) if MASK is available here... */
	469	}
	470	}
	471
	472	static void
	473	in6_status_tunnel(int s)
	474	{
	475	char src[NI_MAXHOST];
	476	char dst[NI_MAXHOST];
	477	struct in6_ifreq in6_ifr;
	478	const struct sockaddr sa = (const struct sockaddr ) &in6_ifr.ifr_addr;
	479
	480	memset(&in6_ifr, 0, sizeof(in6_ifr));
	481	strncpy(in6_ifr.ifr_name, name, IFNAMSIZ);
	482
	483	if (ioctl(s, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6_ifr) < 0)
	484	return;
	485	if (sa->sa_family != AF_INET6)
	486	return;
	487	in6_fillscopeid(&in6_ifr.ifr_addr);
	488	if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0,
	489	NI_NUMERICHOST) != 0)
	490	src[0] = '\0';
	491
	492	if (ioctl(s, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6_ifr) < 0)
	493	return;
	494	if (sa->sa_family != AF_INET6)
	495	return;
	496	in6_fillscopeid(&in6_ifr.ifr_addr);
	497	if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0,
	498	NI_NUMERICHOST) != 0)
	499	dst[0] = '\0';
	500
	501	printf("\ttunnel inet6 %s --> %s\n", src, dst);
	502	}
	503
	504	static void
	505	in6_set_tunnel(int s, struct addrinfo srcres, struct addrinfo dstres)
	506	{
	507	struct in6_aliasreq in6_addreq;
	508
	509	memset(&in6_addreq, 0, sizeof(in6_addreq));
	510	strncpy(in6_addreq.ifra_name, name, IFNAMSIZ);
	511	memcpy(&in6_addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
	512	memcpy(&in6_addreq.ifra_dstaddr, dstres->ai_addr,
	513	dstres->ai_addr->sa_len);
	514
	515	if (ioctl(s, SIOCSIFPHYADDR_IN6, &in6_addreq) < 0)
	516	warn("SIOCSIFPHYADDR_IN6");
	517	}
	518
	519	static struct cmd inet6_cmds[] = {
520	DEF_CMD_ARG("prefixlen", setifprefixlen),
521	DEF_CMD("anycast", IN6_IFF_ANYCAST, setip6flags),
522	DEF_CMD("tentative", IN6_IFF_TENTATIVE, setip6flags),
523	DEF_CMD("-tentative", -IN6_IFF_TENTATIVE, setip6flags),
524	DEF_CMD("deprecated", IN6_IFF_DEPRECATED, setip6flags),
525	DEF_CMD("-deprecated", -IN6_IFF_DEPRECATED, setip6flags),
526	DEF_CMD("autoconf", IN6_IFF_AUTOCONF, setip6flags),
527	DEF_CMD("-autoconf", -IN6_IFF_AUTOCONF, setip6flags),
528	DEF_CMD_ARG("pltime", setip6pltime),
529	DEF_CMD_ARG("vltime", setip6vltime),
530	DEF_CMD("eui64", 0, setip6eui64),
531	};
532
533	static struct afswtch af_inet6 = {
534	.af_name = "inet6",
535	.af_af = AF_INET6,
536	.af_status = in6_status,
537	.af_getaddr = in6_getaddr,
538	.af_getprefix = in6_getprefix,
539	.af_postproc = in6_postproc,
540	.af_status_tunnel = in6_status_tunnel,
541	.af_settunnel = in6_set_tunnel,
542	.af_difaddr = SIOCDIFADDR_IN6,
543	.af_aifaddr = SIOCAIFADDR_IN6,
544	.af_ridreq = &in6_addreq,
545	.af_addreq = &in6_addreq,
546	};
547
548	static void
549	in6_Lopt_cb(const char *optarg __unused)
550	{
551	ip6lifetime++; /* print IPv6 address lifetime */
552	}
553	static struct option in6_Lopt = { "L", "[-L]", in6_Lopt_cb };
554
555	static __constructor void
556	inet6_ctor(void)
557	{
558	#define N(a) (sizeof(a) / sizeof(a[0]))
559	int i;
560
561	for (i = 0; i < N(inet6_cmds); i++)
562	cmd_register(&inet6_cmds[i]);
563	af_register(&af_inet6);
564	opt_register(&in6_Lopt);
565	#undef N
566	}