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 46 static int 47 inet6_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 62 int 63 ifconfig_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