3e89e7b09b
That helps me get rid of some conditional compilation (INET6) in ifconfig. Let each protocol/feature-module print its own usage, so that the ifconfig usage reflects the modules that are actually compiled-in. Write usage information for carp(4) options.
505 lines
14 KiB
C
505 lines
14 KiB
C
/* $NetBSD: af_inet6.c,v 1.23 2008/07/15 20:56:13 dyoung Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: af_inet6.c,v 1.23 2008/07/15 20:56:13 dyoung Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_var.h>
|
|
#include <netinet6/nd6.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <ifaddrs.h>
|
|
#include <netdb.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <util.h>
|
|
|
|
#include "env.h"
|
|
#include "extern.h"
|
|
#include "parse.h"
|
|
#include "extern.h"
|
|
#include "af_inetany.h"
|
|
|
|
static void in6_constructor(void) __attribute__((constructor));
|
|
static void in6_alias(const char *, prop_dictionary_t, prop_dictionary_t,
|
|
struct in6_ifreq *);
|
|
static void in6_commit_address(prop_dictionary_t, prop_dictionary_t);
|
|
|
|
static int setia6eui64_impl(prop_dictionary_t, struct in6_aliasreq *);
|
|
static int setia6flags_impl(prop_dictionary_t, struct in6_aliasreq *);
|
|
static int setia6pltime_impl(prop_dictionary_t, struct in6_aliasreq *);
|
|
static int setia6vltime_impl(prop_dictionary_t, struct in6_aliasreq *);
|
|
|
|
static int setia6lifetime(prop_dictionary_t, int64_t, time_t *, uint32_t *);
|
|
|
|
static void in6_delscopeid(struct sockaddr_in6 *sin6);
|
|
static void in6_status(prop_dictionary_t, prop_dictionary_t, bool);
|
|
|
|
static struct usage_func usage;
|
|
static cmdloop_branch_t branch[2];
|
|
|
|
static const struct kwinst ia6flagskw[] = {
|
|
IFKW("anycast", IN6_IFF_ANYCAST)
|
|
, IFKW("tentative", IN6_IFF_TENTATIVE)
|
|
, IFKW("deprecated", IN6_IFF_DEPRECATED)
|
|
};
|
|
|
|
static struct pinteger parse_pltime = PINTEGER_INITIALIZER(&parse_pltime,
|
|
"pltime", 0, NULL, "pltime", &command_root.pb_parser);
|
|
|
|
static struct pinteger parse_vltime = PINTEGER_INITIALIZER(&parse_vltime,
|
|
"vltime", 0, NULL, "vltime", &command_root.pb_parser);
|
|
|
|
static const struct kwinst inet6kw[] = {
|
|
{.k_word = "pltime", .k_nextparser = &parse_pltime.pi_parser}
|
|
, {.k_word = "vltime", .k_nextparser = &parse_vltime.pi_parser}
|
|
, {.k_word = "eui64", .k_key = "eui64", .k_type = KW_T_BOOL,
|
|
.k_bool = true, .k_nextparser = &command_root.pb_parser}
|
|
};
|
|
|
|
struct pkw ia6flags = PKW_INITIALIZER(&ia6flags, "ia6flags", NULL,
|
|
"ia6flag", ia6flagskw, __arraycount(ia6flagskw), &command_root.pb_parser);
|
|
struct pkw inet6 = PKW_INITIALIZER(&inet6, "IPv6 keywords", NULL,
|
|
NULL, inet6kw, __arraycount(inet6kw), NULL);
|
|
|
|
static struct afswtch in6af = {
|
|
.af_name = "inet6", .af_af = AF_INET6, .af_status = in6_status,
|
|
.af_addr_commit = in6_commit_address
|
|
};
|
|
|
|
static int
|
|
prefix(void *val, int size)
|
|
{
|
|
u_char *pname = (u_char *)val;
|
|
int byte, bit, plen = 0;
|
|
|
|
for (byte = 0; byte < size; byte++, plen += 8)
|
|
if (pname[byte] != 0xff)
|
|
break;
|
|
if (byte == size)
|
|
return (plen);
|
|
for (bit = 7; bit != 0; bit--, plen++)
|
|
if (!(pname[byte] & (1 << bit)))
|
|
break;
|
|
for (; bit != 0; bit--)
|
|
if (pname[byte] & (1 << bit))
|
|
return(0);
|
|
byte++;
|
|
for (; byte < size; byte++)
|
|
if (pname[byte])
|
|
return(0);
|
|
return (plen);
|
|
}
|
|
|
|
int
|
|
setia6flags_impl(prop_dictionary_t env, struct in6_aliasreq *ifra)
|
|
{
|
|
int64_t ia6flag;
|
|
|
|
if (!prop_dictionary_get_int64(env, "ia6flag", &ia6flag)) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
if (ia6flag < 0) {
|
|
ia6flag = -ia6flag;
|
|
ifra->ifra_flags &= ~ia6flag;
|
|
} else
|
|
ifra->ifra_flags |= ia6flag;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
setia6pltime_impl(prop_dictionary_t env, struct in6_aliasreq *ifra)
|
|
{
|
|
int64_t pltime;
|
|
|
|
if (!prop_dictionary_get_int64(env, "pltime", &pltime)) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
return setia6lifetime(env, pltime,
|
|
&ifra->ifra_lifetime.ia6t_preferred,
|
|
&ifra->ifra_lifetime.ia6t_pltime);
|
|
}
|
|
|
|
int
|
|
setia6vltime_impl(prop_dictionary_t env, struct in6_aliasreq *ifra)
|
|
{
|
|
int64_t vltime;
|
|
|
|
if (!prop_dictionary_get_int64(env, "vltime", &vltime)) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
return setia6lifetime(env, vltime,
|
|
&ifra->ifra_lifetime.ia6t_expire,
|
|
&ifra->ifra_lifetime.ia6t_vltime);
|
|
}
|
|
|
|
static int
|
|
setia6lifetime(prop_dictionary_t env, int64_t val, time_t *timep,
|
|
uint32_t *ivalp)
|
|
{
|
|
time_t t;
|
|
int af;
|
|
|
|
if ((af = getaf(env)) == -1 || af != AF_INET6) {
|
|
errx(EXIT_FAILURE,
|
|
"inet6 address lifetime not allowed for the AF");
|
|
}
|
|
|
|
t = time(NULL);
|
|
*timep = t + val;
|
|
*ivalp = val;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
setia6eui64_impl(prop_dictionary_t env, struct in6_aliasreq *ifra)
|
|
{
|
|
char buf[2][80];
|
|
struct ifaddrs *ifap, *ifa;
|
|
const struct sockaddr_in6 *sin6 = NULL;
|
|
const struct in6_addr *lladdr = NULL;
|
|
struct in6_addr *in6;
|
|
const char *ifname;
|
|
bool doit = false;
|
|
int af;
|
|
|
|
if (!prop_dictionary_get_bool(env, "eui64", &doit) || !doit) {
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
if ((ifname = getifname(env)) == NULL)
|
|
return -1;
|
|
|
|
af = getaf(env);
|
|
if (af != AF_INET6) {
|
|
errx(EXIT_FAILURE,
|
|
"eui64 address modifier not allowed for the AF");
|
|
}
|
|
in6 = &ifra->ifra_addr.sin6_addr;
|
|
if (memcmp(&in6addr_any.s6_addr[8], &in6->s6_addr[8], 8) != 0) {
|
|
union {
|
|
struct sockaddr_in6 sin6;
|
|
struct sockaddr sa;
|
|
} any = {.sin6 = {.sin6_family = AF_INET6}};
|
|
memcpy(&any.sin6.sin6_addr, &in6addr_any,
|
|
sizeof(any.sin6.sin6_addr));
|
|
(void)sockaddr_snprintf(buf[0], sizeof(buf[0]), "%a%%S",
|
|
&any.sa);
|
|
(void)sockaddr_snprintf(buf[1], sizeof(buf[1]), "%a%%S",
|
|
(const struct sockaddr *)&ifra->ifra_addr);
|
|
errx(EXIT_FAILURE, "interface index is already filled, %s | %s",
|
|
buf[0], buf[1]);
|
|
}
|
|
if (getifaddrs(&ifap) != 0)
|
|
err(EXIT_FAILURE, "getifaddrs");
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if (ifa->ifa_addr->sa_family == AF_INET6 &&
|
|
strcmp(ifa->ifa_name, ifname) == 0) {
|
|
sin6 = (const struct sockaddr_in6 *)ifa->ifa_addr;
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
|
|
lladdr = &sin6->sin6_addr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!lladdr)
|
|
errx(EXIT_FAILURE, "could not determine link local address");
|
|
|
|
memcpy(&in6->s6_addr[8], &lladdr->s6_addr[8], 8);
|
|
|
|
freeifaddrs(ifap);
|
|
return 0;
|
|
}
|
|
|
|
/* KAME idiosyncrasy */
|
|
static void
|
|
in6_delscopeid(struct sockaddr_in6 *sin6)
|
|
{
|
|
if (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) ||
|
|
sin6->sin6_scope_id == 0)
|
|
return;
|
|
|
|
*(u_int16_t *)&sin6->sin6_addr.s6_addr[2] = htons(sin6->sin6_scope_id);
|
|
sin6->sin6_scope_id = 0;
|
|
}
|
|
|
|
/* XXX not really an alias */
|
|
void
|
|
in6_alias(const char *ifname, prop_dictionary_t env, prop_dictionary_t oenv,
|
|
struct in6_ifreq *creq)
|
|
{
|
|
struct in6_ifreq ifr6;
|
|
struct sockaddr_in6 *sin6;
|
|
char hbuf[NI_MAXHOST];
|
|
u_int32_t scopeid;
|
|
int s;
|
|
const int niflag = NI_NUMERICHOST;
|
|
unsigned short flags;
|
|
|
|
/* Get the non-alias address for this interface. */
|
|
if ((s = getsock(AF_INET6)) == -1) {
|
|
if (errno == EAFNOSUPPORT)
|
|
return;
|
|
err(EXIT_FAILURE, "socket");
|
|
}
|
|
|
|
sin6 = &creq->ifr_addr;
|
|
|
|
in6_fillscopeid(sin6);
|
|
scopeid = sin6->sin6_scope_id;
|
|
if (getnameinfo((const struct sockaddr *)sin6, sin6->sin6_len,
|
|
hbuf, sizeof(hbuf), NULL, 0, niflag))
|
|
strlcpy(hbuf, "", sizeof(hbuf)); /* some message? */
|
|
printf("\tinet6 %s", hbuf);
|
|
|
|
if (getifflags(env, oenv, &flags) == -1)
|
|
err(EXIT_FAILURE, "%s: getifflags", __func__);
|
|
|
|
if (flags & IFF_POINTOPOINT) {
|
|
ifr6 = *creq;
|
|
if (ioctl(s, SIOCGIFDSTADDR_IN6, &ifr6) == -1) {
|
|
if (errno != EADDRNOTAVAIL)
|
|
warn("SIOCGIFDSTADDR_IN6");
|
|
memset(&ifr6.ifr_addr, 0, sizeof(ifr6.ifr_addr));
|
|
ifr6.ifr_addr.sin6_family = AF_INET6;
|
|
ifr6.ifr_addr.sin6_len = sizeof(struct sockaddr_in6);
|
|
}
|
|
sin6 = &ifr6.ifr_addr;
|
|
in6_fillscopeid(sin6);
|
|
hbuf[0] = '\0';
|
|
if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
|
|
hbuf, sizeof(hbuf), NULL, 0, niflag))
|
|
strlcpy(hbuf, "", sizeof(hbuf)); /* some message? */
|
|
printf(" -> %s", hbuf);
|
|
}
|
|
|
|
ifr6 = *creq;
|
|
if (ioctl(s, SIOCGIFNETMASK_IN6, &ifr6) == -1) {
|
|
if (errno != EADDRNOTAVAIL)
|
|
warn("SIOCGIFNETMASK_IN6");
|
|
} else {
|
|
sin6 = &ifr6.ifr_addr;
|
|
printf(" prefixlen %d", prefix(&sin6->sin6_addr,
|
|
sizeof(struct in6_addr)));
|
|
}
|
|
|
|
ifr6 = *creq;
|
|
if (ioctl(s, SIOCGIFAFLAG_IN6, &ifr6) == -1) {
|
|
if (errno != EADDRNOTAVAIL)
|
|
warn("SIOCGIFAFLAG_IN6");
|
|
} else {
|
|
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_ANYCAST)
|
|
printf(" anycast");
|
|
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_TENTATIVE)
|
|
printf(" tentative");
|
|
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_DUPLICATED)
|
|
printf(" duplicated");
|
|
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_DETACHED)
|
|
printf(" detached");
|
|
if (ifr6.ifr_ifru.ifru_flags6 & IN6_IFF_DEPRECATED)
|
|
printf(" deprecated");
|
|
}
|
|
|
|
if (scopeid)
|
|
printf(" scopeid 0x%x", scopeid);
|
|
|
|
if (get_flag('L')) {
|
|
struct in6_addrlifetime *lifetime;
|
|
ifr6 = *creq;
|
|
lifetime = &ifr6.ifr_ifru.ifru_lifetime;
|
|
if (ioctl(s, SIOCGIFALIFETIME_IN6, &ifr6) == -1) {
|
|
if (errno != EADDRNOTAVAIL)
|
|
warn("SIOCGIFALIFETIME_IN6");
|
|
} else if (lifetime->ia6t_preferred || lifetime->ia6t_expire) {
|
|
time_t t = time(NULL);
|
|
printf(" pltime ");
|
|
if (lifetime->ia6t_preferred) {
|
|
printf("%lu",
|
|
(unsigned long)(lifetime->ia6t_preferred -
|
|
MIN(t, lifetime->ia6t_preferred)));
|
|
} else
|
|
printf("infty");
|
|
|
|
printf(" vltime ");
|
|
if (lifetime->ia6t_expire) {
|
|
printf("%lu",
|
|
(unsigned long)(lifetime->ia6t_expire -
|
|
MIN(t, lifetime->ia6t_expire)));
|
|
} else
|
|
printf("infty");
|
|
}
|
|
}
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
static void
|
|
in6_status(prop_dictionary_t env, prop_dictionary_t oenv, bool force)
|
|
{
|
|
struct ifaddrs *ifap, *ifa;
|
|
struct in6_ifreq ifr;
|
|
const char *ifname;
|
|
|
|
if ((ifname = getifname(env)) == NULL)
|
|
err(EXIT_FAILURE, "%s: getifname", __func__);
|
|
|
|
if (getifaddrs(&ifap) != 0)
|
|
err(EXIT_FAILURE, "getifaddrs");
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if (strcmp(ifname, ifa->ifa_name) != 0)
|
|
continue;
|
|
if (ifa->ifa_addr->sa_family != AF_INET6)
|
|
continue;
|
|
if (sizeof(ifr.ifr_addr) < ifa->ifa_addr->sa_len)
|
|
continue;
|
|
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
estrlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
|
|
memcpy(&ifr.ifr_addr, ifa->ifa_addr, ifa->ifa_addr->sa_len);
|
|
in6_alias(ifname, env, oenv, &ifr);
|
|
}
|
|
freeifaddrs(ifap);
|
|
}
|
|
|
|
static int
|
|
in6_pre_aifaddr(prop_dictionary_t env, const struct afparam *param)
|
|
{
|
|
struct in6_aliasreq *ifra = param->req.buf;
|
|
|
|
setia6eui64_impl(env, ifra);
|
|
setia6vltime_impl(env, ifra);
|
|
setia6pltime_impl(env, ifra);
|
|
setia6flags_impl(env, ifra);
|
|
in6_delscopeid(&ifra->ifra_addr);
|
|
in6_delscopeid(&ifra->ifra_dstaddr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
in6_commit_address(prop_dictionary_t env, prop_dictionary_t oenv)
|
|
{
|
|
struct in6_ifreq in6_ifr = {
|
|
.ifr_addr = {
|
|
.sin6_family = AF_INET6,
|
|
.sin6_len = sizeof(in6_ifr.ifr_addr),
|
|
.sin6_addr = {
|
|
.s6_addr =
|
|
{0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff}
|
|
}
|
|
}
|
|
};
|
|
static struct sockaddr_in6 in6_defmask = {
|
|
.sin6_family = AF_INET6,
|
|
.sin6_len = sizeof(in6_defmask),
|
|
.sin6_addr = {
|
|
.s6_addr = {0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff}
|
|
}
|
|
};
|
|
|
|
struct in6_aliasreq in6_ifra = {
|
|
.ifra_prefixmask = {
|
|
.sin6_family = AF_INET6,
|
|
.sin6_len = sizeof(in6_ifra.ifra_prefixmask),
|
|
.sin6_addr = {
|
|
.s6_addr =
|
|
{0xff, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff}}},
|
|
.ifra_lifetime = {
|
|
.ia6t_pltime = ND6_INFINITE_LIFETIME
|
|
, .ia6t_vltime = ND6_INFINITE_LIFETIME
|
|
}
|
|
};
|
|
struct afparam in6param = {
|
|
.req = BUFPARAM(in6_ifra)
|
|
, .dgreq = BUFPARAM(in6_ifr)
|
|
, .name = {
|
|
{.buf = in6_ifr.ifr_name,
|
|
.buflen = sizeof(in6_ifr.ifr_name)},
|
|
{.buf = in6_ifra.ifra_name,
|
|
.buflen = sizeof(in6_ifra.ifra_name)}
|
|
}
|
|
, .dgaddr = BUFPARAM(in6_ifr.ifr_addr)
|
|
, .addr = BUFPARAM(in6_ifra.ifra_addr)
|
|
, .dst = BUFPARAM(in6_ifra.ifra_dstaddr)
|
|
, .brd = BUFPARAM(in6_ifra.ifra_broadaddr)
|
|
, .mask = BUFPARAM(in6_ifra.ifra_prefixmask)
|
|
, .aifaddr = IFADDR_PARAM(SIOCAIFADDR_IN6)
|
|
, .difaddr = IFADDR_PARAM(SIOCDIFADDR_IN6)
|
|
, .gifaddr = IFADDR_PARAM(SIOCGIFADDR_IN6)
|
|
, .defmask = BUFPARAM(in6_defmask)
|
|
, .pre_aifaddr = in6_pre_aifaddr
|
|
};
|
|
commit_address(env, oenv, &in6param);
|
|
}
|
|
|
|
static void
|
|
in6_usage(prop_dictionary_t env)
|
|
{
|
|
fprintf(stderr,
|
|
"\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n"
|
|
"\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] "
|
|
"[ eui64 ]\n");
|
|
}
|
|
|
|
static void
|
|
in6_constructor(void)
|
|
{
|
|
if (register_flag('L') != 0)
|
|
err(EXIT_FAILURE, __func__);
|
|
register_family(&in6af);
|
|
usage_func_init(&usage, in6_usage);
|
|
register_usage(&usage);
|
|
cmdloop_branch_init(&branch[0], &ia6flags.pk_parser);
|
|
cmdloop_branch_init(&branch[1], &inet6.pk_parser);
|
|
register_cmdloop_branch(&branch[0]);
|
|
register_cmdloop_branch(&branch[1]);
|
|
}
|