1/*
2 * Copyright (c) 1983, 1993
3 *  The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31#include <sys/param.h>
32#include <sys/ioctl.h>
33
34#include <net/if.h>
35#include <netinet/in.h>
36
37#include <errno.h>
38#include <ifaddrs.h>
39#include <string.h>
40#include <strings.h>
41
42#include "libifconfig.h"
43#include "libifconfig_internal.h"
44
45
46static int
47inet6_prefixlen(struct in6_addr *addr)
48{
49	int prefixlen = 0;
50	int i;
51
52	for (i = 0; i < 4; i++) {
53		int x = ffs(ntohl(addr->__u6_addr.__u6_addr32[i]));
54		prefixlen += x == 0 ? 0 : 33 - x;
55		if (x != 1) {
56			break;
57		}
58	}
59	return (prefixlen);
60}
61
62int
63ifconfig_inet6_get_addrinfo(ifconfig_handle_t *h,
64    const char *name, struct ifaddrs *ifa, struct ifconfig_inet6_addr *addr)
65{
66	struct sockaddr_in6 *netmask;
67	struct in6_ifreq ifr6;
68
69	bzero(addr, sizeof(*addr));
70
71	/* Set the address */
72	addr->sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
73
74	/* Set the destination address */
75	if (ifa->ifa_flags & IFF_POINTOPOINT) {
76		addr->dstin6 = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
77	}
78
79	/* Set the prefixlen */
80	netmask = (struct sockaddr_in6 *)ifa->ifa_netmask;
81	addr->prefixlen = inet6_prefixlen(&netmask->sin6_addr);
82
83	/* Set the flags */
84	strlcpy(ifr6.ifr_name, name, sizeof(ifr6.ifr_name));
85	ifr6.ifr_addr = *addr->sin6;
86	if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
87		return (-1);
88	}
89	addr->flags = ifr6.ifr_ifru.ifru_flags6;
90
91	/* Set the lifetimes */
92	memset(&addr->lifetime, 0, sizeof(addr->lifetime));
93	ifr6.ifr_addr = *addr->sin6;
94	if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
95		return (-1);
96	}
97	addr->lifetime = ifr6.ifr_ifru.ifru_lifetime; /* struct copy */
98
99	/* Set the vhid */
100	if (ifa->ifa_data) {
101		addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
102	}
103
104	return (0);
105}
106