168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 2009 Hiroki Sato. 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.
|
|
*
|
|
* 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[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sysctl.h>
|
|
#include <net/if.h>
|
|
#include <net/route.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.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>
|
|
#include <netinet/in_var.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
|
|
#include <netinet6/nd6.h>
|
|
|
|
#include "ifconfig.h"
|
|
|
|
#define MAX_SYSCTL_TRY 5
|
|
#define ND6BITS "\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \
|
|
"\004IFDISABLED\005DONT_SET_IFROUTE\006AUTO_LINKLOCAL" \
|
|
"\020DEFAULTIF"
|
|
|
|
static int isnd6defif(int);
|
|
void setnd6flags(const char *, int, int, const struct afswtch *);
|
|
void setnd6defif(const char *, int, int, const struct afswtch *);
|
|
void nd6_status(int);
|
|
|
|
void
|
|
setnd6flags(const char *dummyaddr __unused,
|
|
int d, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
struct in6_ndireq nd;
|
|
int error;
|
|
|
|
memset(&nd, 0, sizeof(nd));
|
|
strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
|
|
error = ioctl(s, SIOCGIFINFO_IN6, &nd);
|
|
if (error) {
|
|
warn("ioctl(SIOCGIFINFO_IN6)");
|
|
return;
|
|
}
|
|
if (d < 0)
|
|
nd.ndi.flags &= ~(-d);
|
|
else
|
|
nd.ndi.flags |= d;
|
|
error = ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd);
|
|
if (error)
|
|
warn("ioctl(SIOCSIFINFO_IN6)");
|
|
}
|
|
|
|
void
|
|
setnd6defif(const char *dummyaddr __unused,
|
|
int d, int s,
|
|
const struct afswtch *afp)
|
|
{
|
|
struct in6_ndifreq ndifreq;
|
|
int ifindex;
|
|
int error;
|
|
|
|
memset(&ndifreq, 0, sizeof(ndifreq));
|
|
strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
|
|
|
|
if (d < 0) {
|
|
if (isnd6defif(s)) {
|
|
/* ifindex = 0 means to remove default if */
|
|
ifindex = 0;
|
|
} else
|
|
return;
|
|
} else if ((ifindex = if_nametoindex(ndifreq.ifname)) == 0) {
|
|
warn("if_nametoindex(%s)", ndifreq.ifname);
|
|
return;
|
|
}
|
|
|
|
ndifreq.ifindex = ifindex;
|
|
error = ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq);
|
|
if (error)
|
|
warn("ioctl(SIOCSDEFIFACE_IN6)");
|
|
}
|
|
|
|
static int
|
|
isnd6defif(int s)
|
|
{
|
|
struct in6_ndifreq ndifreq;
|
|
unsigned int ifindex;
|
|
int error;
|
|
|
|
memset(&ndifreq, 0, sizeof(ndifreq));
|
|
strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
|
|
|
|
ifindex = if_nametoindex(ndifreq.ifname);
|
|
error = ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq);
|
|
if (error) {
|
|
warn("ioctl(SIOCGDEFIFACE_IN6)");
|
|
return (error);
|
|
}
|
|
return (ndifreq.ifindex == ifindex);
|
|
}
|
|
|
|
void
|
|
nd6_status(int s)
|
|
{
|
|
struct in6_ndireq nd;
|
|
int s6;
|
|
int error;
|
|
int isdefif;
|
|
|
|
memset(&nd, 0, sizeof(nd));
|
|
strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
|
|
if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
|
|
warn("socket(AF_INET6, SOCK_DGRAM)");
|
|
return;
|
|
}
|
|
error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
|
|
if (error) {
|
|
warn("ioctl(SIOCGIFINFO_IN6)");
|
|
close(s6);
|
|
return;
|
|
}
|
|
isdefif = isnd6defif(s6);
|
|
close(s6);
|
|
if (nd.ndi.flags == 0 && !isdefif)
|
|
return;
|
|
printb("\tnd6 options",
|
|
(unsigned int)(nd.ndi.flags | (isdefif << 15)), ND6BITS);
|
|
putchar('\n');
|
|
}
|