1047 lines
23 KiB
C
1047 lines
23 KiB
C
/* $NetBSD: route.c,v 1.60 2003/05/14 23:36:32 itojun Exp $ */
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/*
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* Copyright (c) 1983, 1988, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)route.c 8.3 (Berkeley) 3/9/94";
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#else
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__RCSID("$NetBSD: route.c,v 1.60 2003/05/14 23:36:32 itojun Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/mbuf.h>
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#include <sys/un.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#define _KERNEL
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#include <net/route.h>
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#undef _KERNEL
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#include <netinet/in.h>
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#include <netatalk/at.h>
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#include <netiso/iso.h>
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#include <netns/ns.h>
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#include <sys/sysctl.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "netstat.h"
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#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
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/* alignment constraint for routing socket */
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#define ROUNDUP(a) \
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((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
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#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
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/*
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* Definitions for showing gateway flags.
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*/
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struct bits {
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short b_mask;
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char b_val;
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} bits[] = {
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{ RTF_UP, 'U' },
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{ RTF_GATEWAY, 'G' },
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{ RTF_HOST, 'H' },
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{ RTF_REJECT, 'R' },
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{ RTF_DYNAMIC, 'D' },
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{ RTF_MODIFIED, 'M' },
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{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
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{ RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */
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{ RTF_CLONING, 'C' },
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{ RTF_XRESOLVE, 'X' },
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{ RTF_LLINFO, 'L' },
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{ RTF_STATIC, 'S' },
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{ RTF_BLACKHOLE,'B' },
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{ RTF_CLONED, 'c' },
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{ RTF_PROTO1, '1' },
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{ RTF_PROTO2, '2' },
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{ 0 }
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};
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/*
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* XXX we put all of the sockaddr types in here to force the alignment
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* to be correct.
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*/
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static union sockaddr_union {
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struct sockaddr u_sa;
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struct sockaddr_in u_in;
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struct sockaddr_un u_un;
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struct sockaddr_iso u_iso;
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struct sockaddr_at u_at;
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struct sockaddr_dl u_dl;
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struct sockaddr_ns u_ns;
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u_short u_data[128];
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int u_dummy; /* force word-alignment */
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} pt_u;
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int do_rtent = 0;
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struct rtentry rtentry;
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struct radix_node rnode;
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struct radix_mask rmask;
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int NewTree = 0;
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static struct sockaddr *kgetsa __P((struct sockaddr *));
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static void p_tree __P((struct radix_node *));
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static void p_rtnode __P((void));
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static void ntreestuff __P((void));
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static void np_rtentry __P((struct rt_msghdr *));
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static void p_sockaddr __P((const struct sockaddr *,
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const struct sockaddr *, int, int));
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static void p_flags __P((int));
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static void p_rtentry __P((struct rtentry *));
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static void ntreestuff __P((void));
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static u_long forgemask __P((u_long));
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static void domask __P((char *, size_t, u_long, u_long));
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/*
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* Print routing tables.
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*/
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void
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routepr(rtree)
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u_long rtree;
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{
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struct radix_node_head *rnh, head;
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struct radix_node_head *rt_tables[AF_MAX+1];
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int i;
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printf("Routing tables\n");
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if (Aflag == 0 && NewTree)
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ntreestuff();
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else {
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if (rtree == 0) {
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printf("rt_tables: symbol not in namelist\n");
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return;
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}
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kget(rtree, rt_tables);
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for (i = 0; i <= AF_MAX; i++) {
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if ((rnh = rt_tables[i]) == 0)
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continue;
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kget(rnh, head);
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if (i == AF_UNSPEC) {
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if (Aflag && af == 0) {
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printf("Netmasks:\n");
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p_tree(head.rnh_treetop);
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}
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} else if (af == AF_UNSPEC || af == i) {
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pr_family(i);
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do_rtent = 1;
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pr_rthdr(i);
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p_tree(head.rnh_treetop);
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}
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}
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}
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}
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/*
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* Print address family header before a section of the routing table.
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*/
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void
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pr_family(af)
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int af;
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{
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char *afname;
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switch (af) {
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case AF_INET:
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afname = "Internet";
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break;
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#ifdef INET6
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case AF_INET6:
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afname = "Internet6";
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break;
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#endif
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case AF_NS:
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afname = "XNS";
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break;
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case AF_ISO:
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afname = "ISO";
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break;
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case AF_APPLETALK:
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afname = "AppleTalk";
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break;
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case AF_CCITT:
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afname = "X.25";
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break;
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default:
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afname = NULL;
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break;
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}
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if (afname)
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printf("\n%s:\n", afname);
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else
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printf("\nProtocol Family %d:\n", af);
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}
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/* column widths; each followed by one space */
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#ifndef INET6
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#define WID_DST(af) 18 /* width of destination column */
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#define WID_GW(af) 18 /* width of gateway column */
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#else
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/* width of destination/gateway column */
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#if 1
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/* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 */
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#define WID_DST(af) ((af) == AF_INET6 ? (numeric_addr ? 34 : 18) : 18)
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#define WID_GW(af) ((af) == AF_INET6 ? (numeric_addr ? 30 : 18) : 18)
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#else
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/* strlen("fe80::aaaa:bbbb:cccc:dddd") == 25, strlen("/128") == 4 */
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#define WID_DST(af) ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18)
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#define WID_GW(af) ((af) == AF_INET6 ? (numeric_addr ? 25 : 18) : 18)
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#endif
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#endif /* INET6 */
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/*
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* Print header for routing table columns.
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*/
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void
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pr_rthdr(af)
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int af;
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{
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if (Aflag)
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printf("%-8.8s ","Address");
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printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %6.6s %s\n",
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WID_DST(af), WID_DST(af), "Destination",
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WID_GW(af), WID_GW(af), "Gateway",
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"Flags", "Refs", "Use", "Mtu", "Interface");
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}
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static struct sockaddr *
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kgetsa(dst)
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struct sockaddr *dst;
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{
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kget(dst, pt_u.u_sa);
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if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
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kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
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return (&pt_u.u_sa);
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}
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static void
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p_tree(rn)
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struct radix_node *rn;
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{
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again:
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kget(rn, rnode);
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if (rnode.rn_b < 0) {
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if (Aflag)
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printf("%-8.8lx ", (u_long) rn);
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if (rnode.rn_flags & RNF_ROOT) {
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if (Aflag)
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printf("(root node)%s",
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rnode.rn_dupedkey ? " =>\n" : "\n");
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} else if (do_rtent) {
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kget(rn, rtentry);
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p_rtentry(&rtentry);
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if (Aflag)
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p_rtnode();
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} else {
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p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
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NULL, 0, 44);
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putchar('\n');
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}
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if ((rn = rnode.rn_dupedkey) != NULL)
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goto again;
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} else {
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if (Aflag && do_rtent) {
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printf("%-8.8lx ", (u_long) rn);
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p_rtnode();
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}
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rn = rnode.rn_r;
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p_tree(rnode.rn_l);
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p_tree(rn);
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}
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}
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static void
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p_rtnode()
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{
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struct radix_mask *rm = rnode.rn_mklist;
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char nbuf[20];
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if (rnode.rn_b < 0) {
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if (rnode.rn_mask) {
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printf("\t mask ");
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p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
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NULL, 0, -1);
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} else if (rm == 0)
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return;
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} else {
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(void)snprintf(nbuf, sizeof nbuf, "(%d)", rnode.rn_b);
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printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long) rnode.rn_l,
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(u_long) rnode.rn_r);
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}
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while (rm) {
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kget(rm, rmask);
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(void)snprintf(nbuf, sizeof nbuf, " %d refs, ", rmask.rm_refs);
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printf(" mk = %8.8lx {(%d),%s", (u_long) rm,
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-1 - rmask.rm_b, rmask.rm_refs ? nbuf : " ");
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if (rmask.rm_flags & RNF_NORMAL) {
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struct radix_node rnode_aux;
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printf(" <normal>, ");
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kget(rmask.rm_leaf, rnode_aux);
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p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
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NULL, 0, -1);
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} else
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p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
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NULL, 0, -1);
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putchar('}');
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if ((rm = rmask.rm_mklist) != NULL)
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printf(" ->");
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}
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putchar('\n');
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}
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static void
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ntreestuff()
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{
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size_t needed;
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int mib[6];
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char *buf, *next, *lim;
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struct rt_msghdr *rtm;
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mib[0] = CTL_NET;
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mib[1] = PF_ROUTE;
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mib[2] = 0;
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mib[3] = 0;
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mib[4] = NET_RT_DUMP;
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mib[5] = 0;
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if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
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err(1, "route sysctl estimate");
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if ((buf = malloc(needed)) == 0)
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errx(1, "out of space");
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if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
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err(1, "sysctl of routing table");
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lim = buf + needed;
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for (next = buf; next < lim; next += rtm->rtm_msglen) {
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rtm = (struct rt_msghdr *)next;
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np_rtentry(rtm);
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}
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}
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static void
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np_rtentry(rtm)
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struct rt_msghdr *rtm;
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{
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struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
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#ifdef notdef
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static int masks_done, banner_printed;
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#endif
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static int old_af;
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int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
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if (Lflag && (rtm->rtm_flags & RTF_LLINFO))
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return;
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#ifdef notdef
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/* for the moment, netmasks are skipped over */
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if (!banner_printed) {
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printf("Netmasks:\n");
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banner_printed = 1;
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}
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if (masks_done == 0) {
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if (rtm->rtm_addrs != RTA_DST ) {
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masks_done = 1;
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af = sa->sa_family;
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}
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} else
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#endif
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af = sa->sa_family;
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if (af != old_af) {
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pr_family(af);
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old_af = af;
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}
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if (rtm->rtm_addrs == RTA_DST)
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p_sockaddr(sa, NULL, 0, 36);
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else {
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p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
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#if 0
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if (sa->sa_len == 0)
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sa->sa_len = sizeof(long);
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#endif
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sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
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p_sockaddr(sa, NULL, 0, 18);
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}
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p_flags(rtm->rtm_flags & interesting);
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putchar('\n');
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}
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static void
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p_sockaddr(sa, mask, flags, width)
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const struct sockaddr *sa, *mask;
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int flags, width;
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{
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char workbuf[128], *cplim;
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char *cp = workbuf;
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char *ep = workbuf + sizeof(workbuf);
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int n;
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switch(sa->sa_family) {
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case AF_INET:
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{
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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if ((sin->sin_addr.s_addr == INADDR_ANY) &&
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(mask != NULL) &&
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(((struct sockaddr_in *)mask)->sin_addr.s_addr == 0))
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cp = "default";
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else if (flags & RTF_HOST)
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cp = routename(sin->sin_addr.s_addr);
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else if (mask)
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cp = netname(sin->sin_addr.s_addr,
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((struct sockaddr_in *)mask)->sin_addr.s_addr);
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else
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cp = netname(sin->sin_addr.s_addr, INADDR_ANY);
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break;
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}
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#ifdef INET6
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case AF_INET6:
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{
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struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
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#ifdef __KAME__
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struct in6_addr *in6 = &sa6->sin6_addr;
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|
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/*
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* XXX: This is a special workaround for KAME kernels.
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* sin6_scope_id field of SA should be set in the future.
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*/
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if (IN6_IS_ADDR_LINKLOCAL(in6) ||
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IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
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/* XXX: override is ok? */
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sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]);
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*(u_short *)&in6->s6_addr[2] = 0;
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}
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#endif
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|
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if (flags & RTF_HOST)
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cp = routename6(sa6);
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else if (mask) {
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cp = netname6(sa6,
|
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&((struct sockaddr_in6 *)mask)->sin6_addr);
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} else
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cp = netname6(sa6, NULL);
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break;
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}
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#endif
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|
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#ifndef SMALL
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case AF_APPLETALK:
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case 0:
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{
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if (!(flags & RTF_HOST) && mask)
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cp = atalk_print2(sa,mask,11);
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else
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cp = atalk_print(sa,11);
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break;
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}
|
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case AF_NS:
|
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cp = ns_print((struct sockaddr *)sa);
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break;
|
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#endif
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|
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case AF_LINK:
|
|
if (getnameinfo(sa, sa->sa_len, workbuf, sizeof(workbuf),
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NULL, 0, NI_NUMERICHOST) != 0)
|
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strncpy(workbuf, "invalid", sizeof(workbuf));
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cp = workbuf;
|
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break;
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|
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default:
|
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{
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|
u_char *s = (u_char *)sa->sa_data, *slim;
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slim = sa->sa_len + (u_char *) sa;
|
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cplim = cp + sizeof(workbuf) - 6;
|
|
n = snprintf(cp, ep - cp, "(%d)", sa->sa_family);
|
|
if (n >= ep - cp)
|
|
n = ep - cp - 1;
|
|
if (n > 0)
|
|
cp += n;
|
|
while (s < slim && cp < cplim) {
|
|
n = snprintf(cp, ep - cp, " %02x", *s++);
|
|
if (n >= ep - cp)
|
|
n = ep - cp - 1;
|
|
if (n > 0)
|
|
cp += n;
|
|
if (s < slim) {
|
|
n = snprintf(cp, ep - cp, "%02x", *s++);
|
|
if (n >= ep - cp)
|
|
n = ep - cp - 1;
|
|
if (n > 0)
|
|
cp += n;
|
|
}
|
|
}
|
|
cp = workbuf;
|
|
}
|
|
}
|
|
if (width < 0 )
|
|
printf("%s ", cp);
|
|
else {
|
|
if (numeric_addr)
|
|
printf("%-*s ", width, cp);
|
|
else
|
|
printf("%-*.*s ", width, width, cp);
|
|
}
|
|
}
|
|
|
|
static void
|
|
p_flags(f)
|
|
int f;
|
|
{
|
|
char name[33], *flags;
|
|
struct bits *p = bits;
|
|
|
|
for (flags = name; p->b_mask && flags - name < sizeof(name); p++)
|
|
if (p->b_mask & f)
|
|
*flags++ = p->b_val;
|
|
*flags = '\0';
|
|
printf("%-6.6s ", name);
|
|
}
|
|
|
|
static struct sockaddr *sockcopy __P((struct sockaddr *,
|
|
union sockaddr_union *));
|
|
|
|
/*
|
|
* copy a sockaddr into an allocated region, allocate at least sockaddr
|
|
* bytes and zero unused
|
|
*/
|
|
static struct sockaddr *
|
|
sockcopy(sp, dp)
|
|
struct sockaddr *sp;
|
|
union sockaddr_union *dp;
|
|
{
|
|
int len;
|
|
|
|
if (sp == 0 || sp->sa_len == 0)
|
|
(void)memset(dp, 0, sizeof (*sp));
|
|
else {
|
|
len = (sp->sa_len >= sizeof (*sp)) ? sp->sa_len : sizeof (*sp);
|
|
(void)memcpy(dp, sp, len);
|
|
}
|
|
return ((struct sockaddr *)dp);
|
|
}
|
|
|
|
static void
|
|
p_rtentry(rt)
|
|
struct rtentry *rt;
|
|
{
|
|
static struct ifnet ifnet, *lastif;
|
|
union sockaddr_union addr_un, mask_un;
|
|
struct sockaddr *addr, *mask;
|
|
int af;
|
|
|
|
if (Lflag && (rt->rt_flags & RTF_LLINFO))
|
|
return;
|
|
|
|
memset(&addr_un, 0, sizeof(addr_un));
|
|
memset(&mask_un, 0, sizeof(mask_un));
|
|
addr = sockcopy(kgetsa(rt_key(rt)), &addr_un);
|
|
af = addr->sa_family;
|
|
if (rt_mask(rt))
|
|
mask = sockcopy(kgetsa(rt_mask(rt)), &mask_un);
|
|
else
|
|
mask = sockcopy(NULL, &mask_un);
|
|
p_sockaddr(addr, mask, rt->rt_flags, WID_DST(af));
|
|
p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, WID_GW(af));
|
|
p_flags(rt->rt_flags);
|
|
printf("%6d %8lu ", rt->rt_refcnt, rt->rt_use);
|
|
if (rt->rt_rmx.rmx_mtu)
|
|
printf("%6lu", rt->rt_rmx.rmx_mtu);
|
|
else
|
|
printf("%6s", "-");
|
|
putchar((rt->rt_rmx.rmx_locks & RTV_MTU) ? 'L' : ' ');
|
|
if (rt->rt_ifp) {
|
|
if (rt->rt_ifp != lastif) {
|
|
kget(rt->rt_ifp, ifnet);
|
|
lastif = rt->rt_ifp;
|
|
}
|
|
printf(" %.16s%s", ifnet.if_xname,
|
|
rt->rt_nodes[0].rn_dupedkey ? " =>" : "");
|
|
}
|
|
putchar('\n');
|
|
if (vflag) {
|
|
printf("\texpire %10lu%c recvpipe %10ld%c "
|
|
"sendpipe %10ld%c\n",
|
|
rt->rt_rmx.rmx_expire,
|
|
(rt->rt_rmx.rmx_locks & RTV_EXPIRE) ? 'L' : ' ',
|
|
rt->rt_rmx.rmx_recvpipe,
|
|
(rt->rt_rmx.rmx_locks & RTV_RPIPE) ? 'L' : ' ',
|
|
rt->rt_rmx.rmx_sendpipe,
|
|
(rt->rt_rmx.rmx_locks & RTV_SPIPE) ? 'L' : ' ');
|
|
printf("\tssthresh %10lu%c rtt %10ld%c "
|
|
"rttvar %10ld%c\n",
|
|
rt->rt_rmx.rmx_ssthresh,
|
|
(rt->rt_rmx.rmx_locks & RTV_SSTHRESH) ? 'L' : ' ',
|
|
rt->rt_rmx.rmx_rtt,
|
|
(rt->rt_rmx.rmx_locks & RTV_RTT) ? 'L' : ' ',
|
|
rt->rt_rmx.rmx_rttvar,
|
|
(rt->rt_rmx.rmx_locks & RTV_RTTVAR) ? 'L' : ' ');
|
|
printf("\thopcount %10lu%c\n",
|
|
rt->rt_rmx.rmx_hopcount,
|
|
(rt->rt_rmx.rmx_locks & RTV_HOPCOUNT) ? 'L' : ' ');
|
|
}
|
|
}
|
|
|
|
char *
|
|
routename(in)
|
|
u_int32_t in;
|
|
{
|
|
char *cp;
|
|
static char line[MAXHOSTNAMELEN + 1];
|
|
struct hostent *hp;
|
|
static char domain[MAXHOSTNAMELEN + 1];
|
|
static int first = 1;
|
|
|
|
if (first) {
|
|
first = 0;
|
|
if (gethostname(domain, MAXHOSTNAMELEN) == 0) {
|
|
domain[sizeof(domain) - 1] = '\0';
|
|
if ((cp = strchr(domain, '.')))
|
|
(void)strlcpy(domain, cp + 1, sizeof(domain));
|
|
else
|
|
domain[0] = 0;
|
|
} else
|
|
domain[0] = 0;
|
|
}
|
|
cp = 0;
|
|
if (!numeric_addr) {
|
|
hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
|
|
AF_INET);
|
|
if (hp) {
|
|
if ((cp = strchr(hp->h_name, '.')) &&
|
|
!strcmp(cp + 1, domain))
|
|
*cp = 0;
|
|
cp = hp->h_name;
|
|
}
|
|
}
|
|
if (cp) {
|
|
strncpy(line, cp, sizeof(line) - 1);
|
|
line[sizeof(line) - 1] = '\0';
|
|
} else {
|
|
#define C(x) ((x) & 0xff)
|
|
in = ntohl(in);
|
|
snprintf(line, sizeof line, "%u.%u.%u.%u",
|
|
C(in >> 24), C(in >> 16), C(in >> 8), C(in));
|
|
}
|
|
return (line);
|
|
}
|
|
|
|
static u_long
|
|
forgemask(a)
|
|
u_long a;
|
|
{
|
|
u_long m;
|
|
|
|
if (IN_CLASSA(a))
|
|
m = IN_CLASSA_NET;
|
|
else if (IN_CLASSB(a))
|
|
m = IN_CLASSB_NET;
|
|
else
|
|
m = IN_CLASSC_NET;
|
|
return (m);
|
|
}
|
|
|
|
static void
|
|
domask(dst, dlen, addr, mask)
|
|
char *dst;
|
|
size_t dlen;
|
|
u_long addr, mask;
|
|
{
|
|
int b, i;
|
|
|
|
if (!mask || (forgemask(addr) == mask)) {
|
|
*dst = '\0';
|
|
return;
|
|
}
|
|
i = 0;
|
|
for (b = 0; b < 32; b++)
|
|
if (mask & (1 << b)) {
|
|
int bb;
|
|
|
|
i = b;
|
|
for (bb = b+1; bb < 32; bb++)
|
|
if (!(mask & (1 << bb))) {
|
|
i = -1; /* noncontig */
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
if (i == -1)
|
|
(void)snprintf(dst, dlen, "&0x%lx", mask);
|
|
else
|
|
(void)snprintf(dst, dlen, "/%d", 32-i);
|
|
}
|
|
|
|
/*
|
|
* Return the name of the network whose address is given.
|
|
* The address is assumed to be that of a net or subnet, not a host.
|
|
*/
|
|
char *
|
|
netname(in, mask)
|
|
u_int32_t in, mask;
|
|
{
|
|
char *cp = 0;
|
|
static char line[MAXHOSTNAMELEN + 4];
|
|
struct netent *np = 0;
|
|
u_int32_t net, omask;
|
|
u_int32_t i;
|
|
int subnetshift;
|
|
|
|
i = ntohl(in);
|
|
omask = mask = ntohl(mask);
|
|
if (!numeric_addr && i != INADDR_ANY) {
|
|
if (mask == INADDR_ANY) {
|
|
switch (mask = forgemask(i)) {
|
|
case IN_CLASSA_NET:
|
|
subnetshift = 8;
|
|
break;
|
|
case IN_CLASSB_NET:
|
|
subnetshift = 8;
|
|
break;
|
|
case IN_CLASSC_NET:
|
|
subnetshift = 4;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
/*
|
|
* If there are more bits than the standard mask
|
|
* would suggest, subnets must be in use.
|
|
* Guess at the subnet mask, assuming reasonable
|
|
* width subnet fields.
|
|
*/
|
|
while (i &~ mask)
|
|
mask = (long)mask >> subnetshift;
|
|
}
|
|
net = i & mask;
|
|
/*
|
|
* Note: shift the hosts bits out in octet units, since
|
|
* not all versions of getnetbyaddr() do this for us (e.g.
|
|
* the current `etc/networks' parser).
|
|
*/
|
|
while ((mask & 0xff) == 0)
|
|
mask >>= 8, net >>= 8;
|
|
np = getnetbyaddr(net, AF_INET);
|
|
if (np)
|
|
cp = np->n_name;
|
|
}
|
|
if (cp)
|
|
strncpy(line, cp, sizeof(line) - 1);
|
|
else if ((i & 0xffffff) == 0)
|
|
(void)snprintf(line, sizeof line, "%u", C(i >> 24));
|
|
else if ((i & 0xffff) == 0)
|
|
(void)snprintf(line, sizeof line, "%u.%u", C(i >> 24)
|
|
, C(i >> 16));
|
|
else if ((i & 0xff) == 0)
|
|
(void)snprintf(line, sizeof line, "%u.%u.%u", C(i >> 24),
|
|
C(i >> 16), C(i >> 8));
|
|
else
|
|
(void)snprintf(line, sizeof line, "%u.%u.%u.%u", C(i >> 24),
|
|
C(i >> 16), C(i >> 8), C(i));
|
|
domask(line + strlen(line), sizeof(line) - strlen(line), i, omask);
|
|
return (line);
|
|
}
|
|
|
|
#ifdef INET6
|
|
char *
|
|
netname6(sa6, mask)
|
|
struct sockaddr_in6 *sa6;
|
|
struct in6_addr *mask;
|
|
{
|
|
static char line[NI_MAXHOST];
|
|
u_char *p, *q;
|
|
u_char *lim;
|
|
int masklen, final = 0, illegal = 0;
|
|
#ifdef NI_WITHSCOPEID
|
|
int flag = NI_WITHSCOPEID;
|
|
#else
|
|
int flag = 0;
|
|
#endif
|
|
int error;
|
|
struct sockaddr_in6 sin6;
|
|
|
|
sin6 = *sa6;
|
|
if (mask) {
|
|
masklen = 0;
|
|
lim = (u_char *)(mask + 1);
|
|
for (p = (u_char *)mask, q = (u_char *)&sin6.sin6_addr;
|
|
p < lim;
|
|
p++, q++) {
|
|
if (final && *p) {
|
|
illegal++;
|
|
*q = 0;
|
|
continue;
|
|
}
|
|
|
|
switch (*p & 0xff) {
|
|
case 0xff:
|
|
masklen += 8;
|
|
break;
|
|
case 0xfe:
|
|
masklen += 7;
|
|
final++;
|
|
break;
|
|
case 0xfc:
|
|
masklen += 6;
|
|
final++;
|
|
break;
|
|
case 0xf8:
|
|
masklen += 5;
|
|
final++;
|
|
break;
|
|
case 0xf0:
|
|
masklen += 4;
|
|
final++;
|
|
break;
|
|
case 0xe0:
|
|
masklen += 3;
|
|
final++;
|
|
break;
|
|
case 0xc0:
|
|
masklen += 2;
|
|
final++;
|
|
break;
|
|
case 0x80:
|
|
masklen += 1;
|
|
final++;
|
|
break;
|
|
case 0x00:
|
|
final++;
|
|
break;
|
|
default:
|
|
final++;
|
|
illegal++;
|
|
break;
|
|
}
|
|
|
|
if (!illegal)
|
|
*q &= *p;
|
|
else
|
|
*q = 0;
|
|
}
|
|
} else
|
|
masklen = 128;
|
|
|
|
if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
|
|
return("default");
|
|
|
|
if (numeric_addr)
|
|
flag |= NI_NUMERICHOST;
|
|
error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
|
|
line, sizeof(line), NULL, 0, flag);
|
|
if (error)
|
|
strlcpy(line, "invalid", sizeof(line));
|
|
|
|
if (numeric_addr)
|
|
snprintf(&line[strlen(line)], sizeof(line) - strlen(line),
|
|
"/%d", masklen);
|
|
|
|
return line;
|
|
}
|
|
|
|
char *
|
|
routename6(sa6)
|
|
struct sockaddr_in6 *sa6;
|
|
{
|
|
static char line[NI_MAXHOST];
|
|
#ifdef NI_WITHSCOPEID
|
|
int flag = NI_WITHSCOPEID;
|
|
#else
|
|
int flag = 0;
|
|
#endif
|
|
/* use local variable for safety */
|
|
struct sockaddr_in6 sa6_local;
|
|
int error;
|
|
|
|
memset(&sa6_local, 0, sizeof(sa6_local));
|
|
sa6_local.sin6_family = AF_INET6;
|
|
sa6_local.sin6_len = sizeof(struct sockaddr_in6);
|
|
sa6_local.sin6_addr = sa6->sin6_addr;
|
|
sa6_local.sin6_scope_id = sa6->sin6_scope_id;
|
|
|
|
if (numeric_addr)
|
|
flag |= NI_NUMERICHOST;
|
|
|
|
error = getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
|
|
line, sizeof(line), NULL, 0, flag);
|
|
if (error)
|
|
strlcpy(line, "invalid", sizeof(line));
|
|
|
|
return line;
|
|
}
|
|
#endif /*INET6*/
|
|
|
|
/*
|
|
* Print routing statistics
|
|
*/
|
|
void
|
|
rt_stats(off)
|
|
u_long off;
|
|
{
|
|
struct rtstat rtstat;
|
|
|
|
if (off == 0) {
|
|
printf("rtstat: symbol not in namelist\n");
|
|
return;
|
|
}
|
|
kread(off, (char *)&rtstat, sizeof (rtstat));
|
|
printf("routing:\n");
|
|
printf("\t%llu bad routing redirect%s\n",
|
|
(unsigned long long)rtstat.rts_badredirect,
|
|
plural(rtstat.rts_badredirect));
|
|
printf("\t%llu dynamically created route%s\n",
|
|
(unsigned long long)rtstat.rts_dynamic,
|
|
plural(rtstat.rts_dynamic));
|
|
printf("\t%llu new gateway%s due to redirects\n",
|
|
(unsigned long long)rtstat.rts_newgateway,
|
|
plural(rtstat.rts_newgateway));
|
|
printf("\t%llu destination%s found unreachable\n",
|
|
(unsigned long long)rtstat.rts_unreach,
|
|
plural(rtstat.rts_unreach));
|
|
printf("\t%llu use%s of a wildcard route\n",
|
|
(unsigned long long)rtstat.rts_wildcard,
|
|
plural(rtstat.rts_wildcard));
|
|
}
|
|
short ns_nullh[] = {0,0,0};
|
|
short ns_bh[] = {-1,-1,-1};
|
|
|
|
char *
|
|
ns_print(sa)
|
|
struct sockaddr *sa;
|
|
{
|
|
struct sockaddr_ns *sns = (struct sockaddr_ns*)sa;
|
|
struct ns_addr work;
|
|
union {
|
|
union ns_net net_e;
|
|
u_long long_e;
|
|
} net;
|
|
u_short port;
|
|
static char mybuf[50], cport[10], chost[25];
|
|
char *host = "";
|
|
char *p;
|
|
u_char *q;
|
|
|
|
work = sns->sns_addr;
|
|
port = ntohs(work.x_port);
|
|
work.x_port = 0;
|
|
net.net_e = work.x_net;
|
|
if (ns_nullhost(work) && net.long_e == 0) {
|
|
if (port ) {
|
|
(void)snprintf(mybuf, sizeof mybuf, "*.%xH", port);
|
|
upHex(mybuf);
|
|
} else
|
|
(void)snprintf(mybuf, sizeof mybuf, "*.*");
|
|
return (mybuf);
|
|
}
|
|
|
|
if (memcmp(ns_bh, work.x_host.c_host, 6) == 0) {
|
|
host = "any";
|
|
} else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0) {
|
|
host = "*";
|
|
} else {
|
|
q = work.x_host.c_host;
|
|
(void)snprintf(chost, sizeof chost, "%02x%02x%02x%02x%02x%02xH",
|
|
q[0], q[1], q[2], q[3], q[4], q[5]);
|
|
for (p = chost; *p == '0' && p < chost + 12; p++)
|
|
continue;
|
|
host = p;
|
|
}
|
|
if (port)
|
|
(void)snprintf(cport, sizeof cport, ".%xH", htons(port));
|
|
else
|
|
*cport = 0;
|
|
|
|
(void)snprintf(mybuf, sizeof mybuf, "%xH.%s%s", (int)ntohl(net.long_e),
|
|
host, cport);
|
|
upHex(mybuf);
|
|
return (mybuf);
|
|
}
|
|
|
|
char *
|
|
ns_phost(sa)
|
|
struct sockaddr *sa;
|
|
{
|
|
struct sockaddr_ns *sns = (struct sockaddr_ns *)sa;
|
|
struct sockaddr_ns work;
|
|
static union ns_net ns_zeronet;
|
|
char *p;
|
|
|
|
work = *sns;
|
|
work.sns_addr.x_port = 0;
|
|
work.sns_addr.x_net = ns_zeronet;
|
|
|
|
p = ns_print((struct sockaddr *)&work);
|
|
if (strncmp("0H.", p, 3) == 0)
|
|
p += 3;
|
|
return (p);
|
|
}
|
|
|
|
void
|
|
upHex(p0)
|
|
char *p0;
|
|
{
|
|
char *p = p0;
|
|
|
|
for (; *p; p++)
|
|
switch (*p) {
|
|
case 'a':
|
|
case 'b':
|
|
case 'c':
|
|
case 'd':
|
|
case 'e':
|
|
case 'f':
|
|
*p += ('A' - 'a');
|
|
}
|
|
}
|