NetBSD/sbin/ifconfig/af_ns.c

134 lines
3.9 KiB
C

/* $NetBSD: af_ns.c,v 1.2 2005/03/20 01:10:51 thorpej 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.
*/
#ifndef INET_ONLY
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: af_ns.c,v 1.2 2005/03/20 01:10:51 thorpej Exp $");
#endif /* not lint */
/*
* XNS support liberally adapted from code written at the University of
* Maryland principally by James O'Toole and Chris Torek.
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#define NSIP
#include <netns/ns.h>
#include <netns/ns_if.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "extern.h"
#include "af_ns.h"
#define SNS(x) ((struct sockaddr_ns *) &(x))
struct sockaddr_ns *snstab[] = {
SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr),
SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)
};
void
xns_set_nsip_route(const struct sockaddr *ns, const struct sockaddr *ip)
{
struct nsip_req rq;
int size = sizeof(rq);
rq.rq_ns = *ns;
rq.rq_ip = *ip;
rq.rq_flags = 0;
if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
warn("encapsulation routing");
}
void
xns_getaddr(const char *addr, int which)
{
struct sockaddr_ns *sns = snstab[which];
sns->sns_family = AF_NS;
sns->sns_len = sizeof(*sns);
sns->sns_addr = ns_addr(addr);
if (which == MASK)
puts("Attempt to set XNS netmask will be ineffectual");
}
void
xns_status(int force)
{
struct sockaddr_ns *sns;
getsock(AF_NS);
if (s < 0) {
if (errno == EPROTONOSUPPORT)
return;
err(EXIT_FAILURE, "socket");
}
(void) memset(&ifr, 0, sizeof(ifr));
(void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFADDR, &ifr) == -1) {
if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
if (!force)
return;
memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr));
} else
warn("SIOCGIFADDR");
}
(void) strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
sns = (struct sockaddr_ns *)&ifr.ifr_addr;
printf("\tns %s ", ns_ntoa(sns->sns_addr));
if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */
if (ioctl(s, SIOCGIFDSTADDR, &ifr) == -1) {
if (errno == EADDRNOTAVAIL)
memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr));
else
warn("SIOCGIFDSTADDR");
}
(void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr;
printf("--> %s ", ns_ntoa(sns->sns_addr));
}
printf("\n");
}
#endif /* ! INET_ONLY */