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#include <sys/param.h>
30#include <sys/ioctl.h>
31
32#include <net/if.h>
33#include <netinet/in.h>
34
35#include <errno.h>
36#include <ifaddrs.h>
37#include <string.h>
38#include <strings.h>
39
40#include "libifconfig.h"
41#include "libifconfig_internal.h"
42
43
44static int
45inet6_prefixlen(struct in6_addr *addr)
46{
47	int prefixlen = 0;
48	int i;
49
50	for (i = 0; i < 4; i++) {
51		int x = ffs(ntohl(addr->__u6_addr.__u6_addr32[i]));
52		prefixlen += x == 0 ? 0 : 33 - x;
53		if (x != 1) {
54			break;
55		}
56	}
57	return (prefixlen);
58}
59
60int
61ifconfig_inet6_get_addrinfo(ifconfig_handle_t *h,
62    const char *name, struct ifaddrs *ifa, struct ifconfig_inet6_addr *addr)
63{
64	struct sockaddr_in6 *netmask;
65	struct in6_ifreq ifr6;
66
67	bzero(addr, sizeof(*addr));
68
69	/* Set the address */
70	addr->sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
71
72	/* Set the destination address */
73	if (ifa->ifa_flags & IFF_POINTOPOINT) {
74		addr->dstin6 = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
75	}
76
77	/* Set the prefixlen */
78	netmask = (struct sockaddr_in6 *)ifa->ifa_netmask;
79	addr->prefixlen = inet6_prefixlen(&netmask->sin6_addr);
80
81	/* Set the flags */
82	strlcpy(ifr6.ifr_name, name, sizeof(ifr6.ifr_name));
83	ifr6.ifr_addr = *addr->sin6;
84	if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
85		return (-1);
86	}
87	addr->flags = ifr6.ifr_ifru.ifru_flags6;
88
89	/* Set the lifetimes */
90	memset(&addr->lifetime, 0, sizeof(addr->lifetime));
91	ifr6.ifr_addr = *addr->sin6;
92	if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
93		return (-1);
94	}
95	addr->lifetime = ifr6.ifr_ifru.ifru_lifetime; /* struct copy */
96
97	/* Set the vhid */
98	if (ifa->ifa_data) {
99		addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
100	}
101
102	return (0);
103}
104