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104 lines
3.2 KiB
C
104 lines
3.2 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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* 3. 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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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <string.h>
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#include <strings.h>
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#include "libifconfig.h"
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#include "libifconfig_internal.h"
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static int
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inet6_prefixlen(struct in6_addr *addr)
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{
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int prefixlen = 0;
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int i;
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for (i = 0; i < 4; i++) {
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int x = ffs(ntohl(addr->__u6_addr.__u6_addr32[i]));
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prefixlen += x == 0 ? 0 : 33 - x;
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if (x != 1) {
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break;
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}
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}
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return (prefixlen);
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}
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int
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ifconfig_inet6_get_addrinfo(ifconfig_handle_t *h,
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const char *name, struct ifaddrs *ifa, struct ifconfig_inet6_addr *addr)
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{
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struct sockaddr_in6 *netmask;
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struct in6_ifreq ifr6;
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bzero(addr, sizeof(*addr));
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/* Set the address */
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addr->sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
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/* Set the destination address */
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if (ifa->ifa_flags & IFF_POINTOPOINT) {
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addr->dstin6 = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
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}
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/* Set the prefixlen */
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netmask = (struct sockaddr_in6 *)ifa->ifa_netmask;
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addr->prefixlen = inet6_prefixlen(&netmask->sin6_addr);
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/* Set the flags */
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strlcpy(ifr6.ifr_name, name, sizeof(ifr6.ifr_name));
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ifr6.ifr_addr = *addr->sin6;
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if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
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return (-1);
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}
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addr->flags = ifr6.ifr_ifru.ifru_flags6;
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/* Set the lifetimes */
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memset(&addr->lifetime, 0, sizeof(addr->lifetime));
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ifr6.ifr_addr = *addr->sin6;
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if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFALIFETIME_IN6, &ifr6) < 0) {
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return (-1);
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}
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addr->lifetime = ifr6.ifr_ifru.ifru_lifetime; /* struct copy */
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/* Set the vhid */
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if (ifa->ifa_data) {
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addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
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}
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return (0);
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}
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