ab7c5957a9
or route(8): it tells ifconfig(8) to try to resolve numbers to hosts and service names. This default ifconfig behavior stays the same as it always was.
210 lines
6.5 KiB
C
210 lines
6.5 KiB
C
/* $NetBSD: tunnel.c,v 1.17 2009/08/07 18:53:37 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: tunnel.c,v 1.17 2009/08/07 18:53:37 dyoung Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
|
|
#ifdef INET6
|
|
#include <netinet/in.h>
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.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 "util.h"
|
|
|
|
static status_func_t status;
|
|
static usage_func_t usage;
|
|
static cmdloop_branch_t branch;
|
|
|
|
static void tunnel_constructor(void) __attribute__((constructor));
|
|
static int settunnel(prop_dictionary_t, prop_dictionary_t);
|
|
static int deletetunnel(prop_dictionary_t, prop_dictionary_t);
|
|
static void tunnel_status(prop_dictionary_t, prop_dictionary_t);
|
|
|
|
struct paddr tundst = PADDR_INITIALIZER(&tundst, "tundst", settunnel,
|
|
"tundst", NULL, NULL, NULL, &command_root.pb_parser);
|
|
|
|
struct paddr tunsrc = PADDR_INITIALIZER(&tunsrc, "tunsrc", NULL,
|
|
"tunsrc", NULL, NULL, NULL, &tundst.pa_parser);
|
|
|
|
static const struct kwinst tunnelkw[] = {
|
|
{.k_word = "deletetunnel", .k_exec = deletetunnel,
|
|
.k_nextparser = &command_root.pb_parser}
|
|
, {.k_word = "tunnel", .k_nextparser = &tunsrc.pa_parser}
|
|
};
|
|
|
|
struct pkw tunnel = PKW_INITIALIZER(&tunnel, "tunnel", NULL, NULL,
|
|
tunnelkw, __arraycount(tunnelkw), NULL);
|
|
|
|
static int
|
|
settunnel(prop_dictionary_t env, prop_dictionary_t oenv)
|
|
{
|
|
const struct paddr_prefix *srcpfx, *dstpfx;
|
|
struct if_laddrreq req;
|
|
prop_data_t srcdata, dstdata;
|
|
|
|
srcdata = (prop_data_t)prop_dictionary_get(env, "tunsrc");
|
|
dstdata = (prop_data_t)prop_dictionary_get(env, "tundst");
|
|
|
|
if (srcdata == NULL || dstdata == NULL) {
|
|
warnx("%s.%d", __func__, __LINE__);
|
|
errno = ENOENT;
|
|
return -1;
|
|
}
|
|
|
|
srcpfx = prop_data_data_nocopy(srcdata);
|
|
dstpfx = prop_data_data_nocopy(dstdata);
|
|
|
|
if (srcpfx->pfx_addr.sa_family != dstpfx->pfx_addr.sa_family)
|
|
errx(EXIT_FAILURE,
|
|
"source and destination address families do not match");
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
memcpy(&req.addr, &srcpfx->pfx_addr,
|
|
MIN(sizeof(req.addr), srcpfx->pfx_addr.sa_len));
|
|
memcpy(&req.dstaddr, &dstpfx->pfx_addr,
|
|
MIN(sizeof(req.dstaddr), dstpfx->pfx_addr.sa_len));
|
|
|
|
#ifdef INET6
|
|
if (req.addr.ss_family == AF_INET6) {
|
|
struct sockaddr_in6 *s6, *d;
|
|
|
|
s6 = (struct sockaddr_in6 *)&req.addr;
|
|
d = (struct sockaddr_in6 *)&req.dstaddr;
|
|
if (s6->sin6_scope_id != d->sin6_scope_id) {
|
|
errx(EXIT_FAILURE, "scope mismatch");
|
|
/* NOTREACHED */
|
|
}
|
|
if (IN6_IS_ADDR_MULTICAST(&d->sin6_addr) ||
|
|
IN6_IS_ADDR_MULTICAST(&s6->sin6_addr))
|
|
errx(EXIT_FAILURE, "tunnel src/dst is multicast");
|
|
/* embed scopeid */
|
|
if (s6->sin6_scope_id &&
|
|
IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr)) {
|
|
*(u_int16_t *)&s6->sin6_addr.s6_addr[2] =
|
|
htons(s6->sin6_scope_id);
|
|
}
|
|
if (d->sin6_scope_id && IN6_IS_ADDR_LINKLOCAL(&d->sin6_addr)) {
|
|
*(u_int16_t *)&d->sin6_addr.s6_addr[2] =
|
|
htons(d->sin6_scope_id);
|
|
}
|
|
}
|
|
#endif /* INET6 */
|
|
|
|
if (direct_ioctl(env, SIOCSLIFPHYADDR, &req) == -1)
|
|
warn("SIOCSLIFPHYADDR");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
deletetunnel(prop_dictionary_t env, prop_dictionary_t oenv)
|
|
{
|
|
if (indirect_ioctl(env, SIOCDIFPHYADDR, NULL) == -1)
|
|
err(EXIT_FAILURE, "SIOCDIFPHYADDR");
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
tunnel_status(prop_dictionary_t env, prop_dictionary_t oenv)
|
|
{
|
|
char dstserv[sizeof(",65535")];
|
|
char srcserv[sizeof(",65535")];
|
|
char psrcaddr[NI_MAXHOST];
|
|
char pdstaddr[NI_MAXHOST];
|
|
const int niflag = Nflag ? 0 : (NI_NUMERICHOST|NI_NUMERICSERV);
|
|
struct if_laddrreq req;
|
|
const struct afswtch *afp;
|
|
|
|
psrcaddr[0] = pdstaddr[0] = '\0';
|
|
|
|
memset(&req, 0, sizeof(req));
|
|
if (direct_ioctl(env, SIOCGLIFPHYADDR, &req) == -1)
|
|
return;
|
|
afp = lookup_af_bynum(req.addr.ss_family);
|
|
#ifdef INET6
|
|
if (req.addr.ss_family == AF_INET6)
|
|
in6_fillscopeid((struct sockaddr_in6 *)&req.addr);
|
|
#endif /* INET6 */
|
|
getnameinfo((struct sockaddr *)&req.addr, req.addr.ss_len,
|
|
psrcaddr, sizeof(psrcaddr), &srcserv[1], sizeof(srcserv) - 1,
|
|
niflag);
|
|
|
|
#ifdef INET6
|
|
if (req.dstaddr.ss_family == AF_INET6)
|
|
in6_fillscopeid((struct sockaddr_in6 *)&req.dstaddr);
|
|
#endif
|
|
getnameinfo((struct sockaddr *)&req.dstaddr, req.dstaddr.ss_len,
|
|
pdstaddr, sizeof(pdstaddr), &dstserv[1], sizeof(dstserv) - 1,
|
|
niflag);
|
|
|
|
srcserv[0] = (strcmp(&srcserv[1], "0") == 0) ? '\0' : ',';
|
|
dstserv[0] = (strcmp(&dstserv[1], "0") == 0) ? '\0' : ',';
|
|
|
|
printf("\ttunnel %s %s%s --> %s%s\n", afp ? afp->af_name : "???",
|
|
psrcaddr, srcserv, pdstaddr, dstserv);
|
|
}
|
|
|
|
static void
|
|
tunnel_usage(prop_dictionary_t env)
|
|
{
|
|
fprintf(stderr,
|
|
"\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n");
|
|
}
|
|
|
|
static void
|
|
tunnel_constructor(void)
|
|
{
|
|
cmdloop_branch_init(&branch, &tunnel.pk_parser);
|
|
register_cmdloop_branch(&branch);
|
|
status_func_init(&status, tunnel_status);
|
|
usage_func_init(&usage, tunnel_usage);
|
|
register_status(&status);
|
|
register_usage(&usage);
|
|
}
|