1038 lines
24 KiB
C
1038 lines
24 KiB
C
/* $NetBSD: print-icmp6.c,v 1.3 2001/06/27 02:46:25 simonb Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
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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: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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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 const char rcsid[] =
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"@(#) Header: /tcpdump/master/tcpdump/print-icmp6.c,v 1.55 2001/06/15 22:17:32 fenner Exp";
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#else
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__RCSID("$NetBSD: print-icmp6.c,v 1.3 2001/06/27 02:46:25 simonb Exp $");
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#endif
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef INET6
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#include <ctype.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include "ip6.h"
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#include "icmp6.h"
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#include "interface.h"
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#include "addrtoname.h"
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#include "udp.h"
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#include "ah.h"
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static const char *get_rtpref(u_int);
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static const char *get_lifetime(u_int32_t);
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static void print_lladdr(const u_char *, size_t);
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void icmp6_opt_print(const u_char *, int);
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void mld6_print(const u_char *);
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static struct udphdr *get_upperlayer(u_char *, int *);
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static void dnsname_print(const u_char *, const u_char *);
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void icmp6_nodeinfo_print(int, const u_char *, const u_char *);
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void icmp6_rrenum_print(int, const u_char *, const u_char *);
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#ifndef abs
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#define abs(a) ((0 < (a)) ? (a) : -(a))
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#endif
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static const char *
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get_rtpref(u_int v)
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{
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static const char *rtpref_str[] = {
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"medium", /* 00 */
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"high", /* 01 */
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"rsv", /* 10 */
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"low" /* 11 */
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};
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return rtpref_str[((v & ND_RA_FLAG_RTPREF_MASK) >> 3) & 0xff];
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}
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static const char *
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get_lifetime(u_int32_t v)
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{
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static char buf[20];
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if (v == (u_int32_t)~0UL)
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return "infinity";
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else {
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snprintf(buf, sizeof(buf), "%u", v);
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return buf;
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}
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}
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static void
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print_lladdr(const u_int8_t *p, size_t l)
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{
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const u_int8_t *ep, *q;
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q = p;
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ep = p + l;
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while (l > 0 && q < ep) {
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if (q > p)
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printf(":");
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printf("%02x", *q++);
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l--;
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}
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}
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void
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icmp6_print(const u_char *bp, const u_char *bp2)
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{
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const struct icmp6_hdr *dp;
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const struct ip6_hdr *ip;
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const char *str;
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const struct ip6_hdr *oip;
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const struct udphdr *ouh;
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int dport;
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const u_char *ep;
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char buf[256];
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int icmp6len, prot;
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dp = (struct icmp6_hdr *)bp;
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ip = (struct ip6_hdr *)bp2;
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oip = (struct ip6_hdr *)(dp + 1);
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str = buf;
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/* 'ep' points to the end of available data. */
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ep = snapend;
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if (ip->ip6_plen)
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icmp6len = (ntohs(ip->ip6_plen) + sizeof(struct ip6_hdr) -
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(bp - bp2));
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else /* XXX: jumbo payload case... */
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icmp6len = snapend - bp;
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TCHECK(dp->icmp6_code);
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switch (dp->icmp6_type) {
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case ICMP6_DST_UNREACH:
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TCHECK(oip->ip6_dst);
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switch (dp->icmp6_code) {
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case ICMP6_DST_UNREACH_NOROUTE:
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printf("icmp6: %s unreachable route",
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ip6addr_string(&oip->ip6_dst));
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break;
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case ICMP6_DST_UNREACH_ADMIN:
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printf("icmp6: %s unreachable prohibited",
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ip6addr_string(&oip->ip6_dst));
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break;
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case ICMP6_DST_UNREACH_BEYONDSCOPE:
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printf("icmp6: %s beyond scope of source address %s",
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ip6addr_string(&oip->ip6_dst),
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ip6addr_string(&oip->ip6_src));
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break;
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case ICMP6_DST_UNREACH_ADDR:
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printf("icmp6: %s unreachable address",
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ip6addr_string(&oip->ip6_dst));
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break;
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case ICMP6_DST_UNREACH_NOPORT:
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if ((ouh = get_upperlayer((u_char *)oip, &prot))
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== NULL)
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goto trunc;
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dport = ntohs(ouh->uh_dport);
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switch (prot) {
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case IPPROTO_TCP:
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printf("icmp6: %s tcp port %s unreachable",
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ip6addr_string(&oip->ip6_dst),
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tcpport_string(dport));
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break;
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case IPPROTO_UDP:
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printf("icmp6: %s udp port %s unreachable",
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ip6addr_string(&oip->ip6_dst),
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udpport_string(dport));
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break;
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default:
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printf("icmp6: %s protocol %d port %d unreachable",
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ip6addr_string(&oip->ip6_dst),
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oip->ip6_nxt, dport);
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break;
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}
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break;
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default:
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printf("icmp6: %s unreachable code-#%d",
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ip6addr_string(&oip->ip6_dst),
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dp->icmp6_code);
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break;
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}
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break;
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case ICMP6_PACKET_TOO_BIG:
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TCHECK(dp->icmp6_mtu);
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printf("icmp6: too big %u", (u_int32_t)ntohl(dp->icmp6_mtu));
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break;
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case ICMP6_TIME_EXCEEDED:
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TCHECK(oip->ip6_dst);
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switch (dp->icmp6_code) {
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case ICMP6_TIME_EXCEED_TRANSIT:
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printf("icmp6: time exceeded in-transit for %s",
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ip6addr_string(&oip->ip6_dst));
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break;
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case ICMP6_TIME_EXCEED_REASSEMBLY:
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printf("icmp6: ip6 reassembly time exceeded");
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break;
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default:
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printf("icmp6: time exceeded code-#%d",
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dp->icmp6_code);
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break;
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}
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break;
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case ICMP6_PARAM_PROB:
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TCHECK(oip->ip6_dst);
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switch (dp->icmp6_code) {
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case ICMP6_PARAMPROB_HEADER:
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printf("icmp6: parameter problem errorneous - octet %u",
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(u_int32_t)ntohl(dp->icmp6_pptr));
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break;
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case ICMP6_PARAMPROB_NEXTHEADER:
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printf("icmp6: parameter problem next header - octet %u",
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(u_int32_t)ntohl(dp->icmp6_pptr));
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break;
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case ICMP6_PARAMPROB_OPTION:
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printf("icmp6: parameter problem option - octet %u",
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(u_int32_t)ntohl(dp->icmp6_pptr));
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break;
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default:
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printf("icmp6: parameter problem code-#%d",
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dp->icmp6_code);
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break;
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}
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break;
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case ICMP6_ECHO_REQUEST:
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printf("icmp6: echo request");
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break;
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case ICMP6_ECHO_REPLY:
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printf("icmp6: echo reply");
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break;
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case ICMP6_MEMBERSHIP_QUERY:
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printf("icmp6: multicast listener query ");
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mld6_print((const u_char *)dp);
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break;
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case ICMP6_MEMBERSHIP_REPORT:
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printf("icmp6: multicast listener report ");
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mld6_print((const u_char *)dp);
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break;
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case ICMP6_MEMBERSHIP_REDUCTION:
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printf("icmp6: multicast listener done ");
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mld6_print((const u_char *)dp);
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break;
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case ND_ROUTER_SOLICIT:
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printf("icmp6: router solicitation ");
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if (vflag) {
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#define RTSOLLEN 8
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icmp6_opt_print((const u_char *)dp + RTSOLLEN,
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icmp6len - RTSOLLEN);
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}
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break;
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case ND_ROUTER_ADVERT:
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printf("icmp6: router advertisement");
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if (vflag) {
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struct nd_router_advert *p;
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p = (struct nd_router_advert *)dp;
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TCHECK(p->nd_ra_retransmit);
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printf("(chlim=%d, ", (int)p->nd_ra_curhoplimit);
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if (p->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)
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printf("M");
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if (p->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)
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printf("O");
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if (p->nd_ra_flags_reserved & ND_RA_FLAG_HOME_AGENT)
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printf("H");
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if ((p->nd_ra_flags_reserved & ~ND_RA_FLAG_RTPREF_MASK)
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!= 0)
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printf(" ");
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printf("pref=%s, ",
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get_rtpref(p->nd_ra_flags_reserved));
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printf("router_ltime=%d, ", ntohs(p->nd_ra_router_lifetime));
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printf("reachable_time=%u, ",
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(u_int32_t)ntohl(p->nd_ra_reachable));
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printf("retrans_time=%u)",
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(u_int32_t)ntohl(p->nd_ra_retransmit));
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#define RTADVLEN 16
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icmp6_opt_print((const u_char *)dp + RTADVLEN,
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icmp6len - RTADVLEN);
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}
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break;
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case ND_NEIGHBOR_SOLICIT:
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{
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struct nd_neighbor_solicit *p;
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p = (struct nd_neighbor_solicit *)dp;
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TCHECK(p->nd_ns_target);
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printf("icmp6: neighbor sol: who has %s",
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ip6addr_string(&p->nd_ns_target));
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if (vflag) {
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#define NDSOLLEN 24
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icmp6_opt_print((const u_char *)dp + NDSOLLEN,
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icmp6len - NDSOLLEN);
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}
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}
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break;
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case ND_NEIGHBOR_ADVERT:
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{
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struct nd_neighbor_advert *p;
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p = (struct nd_neighbor_advert *)dp;
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TCHECK(p->nd_na_target);
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printf("icmp6: neighbor adv: tgt is %s",
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ip6addr_string(&p->nd_na_target));
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if (vflag) {
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#define ND_NA_FLAG_ALL \
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(ND_NA_FLAG_ROUTER|ND_NA_FLAG_SOLICITED|ND_NA_FLAG_OVERRIDE)
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/* we don't need ntohl() here. see advanced-api-04. */
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if (p->nd_na_flags_reserved & ND_NA_FLAG_ALL) {
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#undef ND_NA_FLAG_ALL
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u_int32_t flags;
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flags = p->nd_na_flags_reserved;
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printf("(");
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if (flags & ND_NA_FLAG_ROUTER)
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printf("R");
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if (flags & ND_NA_FLAG_SOLICITED)
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printf("S");
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if (flags & ND_NA_FLAG_OVERRIDE)
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printf("O");
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printf(")");
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}
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#define NDADVLEN 24
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icmp6_opt_print((const u_char *)dp + NDADVLEN,
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icmp6len - NDADVLEN);
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#undef NDADVLEN
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}
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}
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break;
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case ND_REDIRECT:
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#define RDR(i) ((struct nd_redirect *)(i))
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TCHECK(RDR(dp)->nd_rd_dst);
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printf("icmp6: redirect %s",
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getname6((const u_char *)&RDR(dp)->nd_rd_dst));
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printf(" to %s",
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getname6((const u_char*)&RDR(dp)->nd_rd_target));
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#define REDIRECTLEN 40
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if (vflag) {
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icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
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icmp6len - REDIRECTLEN);
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}
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break;
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#undef REDIRECTLEN
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#undef RDR
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case ICMP6_ROUTER_RENUMBERING:
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icmp6_rrenum_print(icmp6len, bp, ep);
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break;
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case ICMP6_NI_QUERY:
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case ICMP6_NI_REPLY:
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icmp6_nodeinfo_print(icmp6len, bp, ep);
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break;
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default:
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printf("icmp6: type-#%d", dp->icmp6_type);
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break;
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}
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return;
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trunc:
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fputs("[|icmp6]", stdout);
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}
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static struct udphdr *
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get_upperlayer(u_char *bp, int *prot)
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{
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const u_char *ep;
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struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
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struct udphdr *uh;
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struct ip6_hbh *hbh;
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struct ip6_frag *fragh;
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struct ah *ah;
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int nh, hlen;
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/* 'ep' points to the end of available data. */
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ep = snapend;
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if (TTEST(ip6->ip6_nxt) == 0)
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return NULL;
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nh = ip6->ip6_nxt;
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hlen = sizeof(struct ip6_hdr);
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while (bp < snapend) {
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bp += hlen;
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switch(nh) {
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case IPPROTO_UDP:
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case IPPROTO_TCP:
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uh = (struct udphdr *)bp;
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if (TTEST(uh->uh_dport)) {
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*prot = nh;
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return(uh);
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}
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else
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return(NULL);
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/* NOTREACHED */
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case IPPROTO_HOPOPTS:
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case IPPROTO_DSTOPTS:
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case IPPROTO_ROUTING:
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hbh = (struct ip6_hbh *)bp;
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if (TTEST(hbh->ip6h_len) == 0)
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return(NULL);
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nh = hbh->ip6h_nxt;
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hlen = (hbh->ip6h_len + 1) << 3;
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break;
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case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
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fragh = (struct ip6_frag *)bp;
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if (TTEST(fragh->ip6f_offlg) == 0)
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return(NULL);
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/* fragments with non-zero offset are meaningless */
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if ((fragh->ip6f_offlg & IP6F_OFF_MASK) != 0)
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return(NULL);
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nh = fragh->ip6f_nxt;
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hlen = sizeof(struct ip6_frag);
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break;
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case IPPROTO_AH:
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ah = (struct ah *)bp;
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if (TTEST(ah->ah_len) == 0)
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return(NULL);
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nh = ah->ah_nxt;
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hlen = (ah->ah_len + 2) << 2;
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break;
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default: /* unknown or undecodable header */
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*prot = nh; /* meaningless, but set here anyway */
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return(NULL);
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}
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}
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return(NULL); /* should be notreached, though */
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}
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void
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icmp6_opt_print(const u_char *bp, int resid)
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{
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const struct nd_opt_hdr *op;
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const struct nd_opt_hdr *opl; /* why there's no struct? */
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const struct nd_opt_prefix_info *opp;
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const struct icmp6_opts_redirect *opr;
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const struct nd_opt_mtu *opm;
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const struct nd_opt_advinterval *opa;
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const struct nd_opt_route_info *opri;
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const u_char *cp, *ep;
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struct in6_addr in6, *in6p;
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size_t l;
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#define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
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cp = bp;
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/* 'ep' points to the end of available data. */
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ep = snapend;
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while (cp < ep) {
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op = (struct nd_opt_hdr *)cp;
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ECHECK(op->nd_opt_len);
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if (resid <= 0)
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return;
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if (op->nd_opt_len == 0)
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goto trunc;
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if (cp + (op->nd_opt_len << 3) > ep)
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goto trunc;
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switch (op->nd_opt_type) {
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case ND_OPT_SOURCE_LINKADDR:
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opl = (struct nd_opt_hdr *)op;
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printf("(src lladdr: ");
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l = (op->nd_opt_len << 3) - 2;
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print_lladdr(cp + 2, l);
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/*(*/
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printf(")");
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break;
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case ND_OPT_TARGET_LINKADDR:
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opl = (struct nd_opt_hdr *)op;
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printf("(tgt lladdr: ");
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l = (op->nd_opt_len << 3) - 2;
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print_lladdr(cp + 2, l);
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/*(*/
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printf(")");
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break;
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case ND_OPT_PREFIX_INFORMATION:
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opp = (struct nd_opt_prefix_info *)op;
|
|
TCHECK(opp->nd_opt_pi_prefix);
|
|
printf("(prefix info: "); /*)*/
|
|
if (op->nd_opt_len != 4) {
|
|
printf("badlen");
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ONLINK)
|
|
printf("L");
|
|
if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_AUTO)
|
|
printf("A");
|
|
if (opp->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ROUTER)
|
|
printf("R");
|
|
if (opp->nd_opt_pi_flags_reserved)
|
|
printf(" ");
|
|
printf("valid_ltime=%s,",
|
|
get_lifetime((u_int32_t)ntohl(opp->nd_opt_pi_valid_time)));
|
|
printf("preferred_ltime=%s,",
|
|
get_lifetime((u_int32_t)ntohl(opp->nd_opt_pi_preferred_time)));
|
|
printf("prefix=%s/%d",
|
|
ip6addr_string(&opp->nd_opt_pi_prefix),
|
|
opp->nd_opt_pi_prefix_len);
|
|
if (opp->nd_opt_pi_len != 4)
|
|
printf("!");
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
case ND_OPT_REDIRECTED_HEADER:
|
|
opr = (struct icmp6_opts_redirect *)op;
|
|
printf("(redirect)");
|
|
/* xxx */
|
|
break;
|
|
case ND_OPT_MTU:
|
|
opm = (struct nd_opt_mtu *)op;
|
|
TCHECK(opm->nd_opt_mtu_mtu);
|
|
printf("(mtu:"); /*)*/
|
|
if (op->nd_opt_len != 1) {
|
|
printf("badlen");
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
printf(" mtu=%u", (u_int32_t)ntohl(opm->nd_opt_mtu_mtu));
|
|
if (opm->nd_opt_mtu_len != 1)
|
|
printf("!");
|
|
printf(")");
|
|
break;
|
|
case ND_OPT_ADVINTERVAL:
|
|
opa = (struct nd_opt_advinterval *)op;
|
|
TCHECK(opa->nd_opt_adv_interval);
|
|
printf("(advint:"); /*)*/
|
|
printf(" advint=%u",
|
|
(u_int32_t)ntohl(opa->nd_opt_adv_interval));
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
case ND_OPT_ROUTE_INFO:
|
|
opri = (struct nd_opt_route_info *)op;
|
|
TCHECK(opri->nd_opt_rti_lifetime);
|
|
memset(&in6, 0, sizeof(in6));
|
|
in6p = (struct in6_addr *)(opri + 1);
|
|
switch (op->nd_opt_len) {
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
TCHECK2(*in6p, 8);
|
|
memcpy(&in6, opri + 1, 8);
|
|
break;
|
|
case 3:
|
|
TCHECK(*in6p);
|
|
memcpy(&in6, opri + 1, sizeof(in6));
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
}
|
|
printf("(rtinfo:"); /*)*/
|
|
printf(" %s/%u", ip6addr_string(&in6),
|
|
opri->nd_opt_rti_prefixlen);
|
|
printf(", pref=%s", get_rtpref(opri->nd_opt_rti_flags));
|
|
printf(", lifetime=%s",
|
|
get_lifetime((u_int32_t)ntohl(opri->nd_opt_rti_lifetime)));
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
default:
|
|
printf("(unknwon opt_type=%d, opt_len=%d)",
|
|
op->nd_opt_type, op->nd_opt_len);
|
|
break;
|
|
}
|
|
|
|
cp += op->nd_opt_len << 3;
|
|
resid -= op->nd_opt_len << 3;
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
fputs("[ndp opt]", stdout);
|
|
return;
|
|
#undef ECHECK
|
|
}
|
|
|
|
void
|
|
mld6_print(const u_char *bp)
|
|
{
|
|
struct mld6_hdr *mp = (struct mld6_hdr *)bp;
|
|
const u_char *ep;
|
|
|
|
/* 'ep' points to the end of available data. */
|
|
ep = snapend;
|
|
|
|
if ((u_char *)mp + sizeof(*mp) > ep)
|
|
return;
|
|
|
|
printf("max resp delay: %d ", ntohs(mp->mld6_maxdelay));
|
|
printf("addr: %s", ip6addr_string(&mp->mld6_addr));
|
|
}
|
|
|
|
static void
|
|
dnsname_print(const u_char *cp, const u_char *ep)
|
|
{
|
|
int i;
|
|
|
|
/* DNS name decoding - no decompression */
|
|
printf(", \"");
|
|
while (cp < ep) {
|
|
i = *cp++;
|
|
if (i) {
|
|
if (i > ep - cp) {
|
|
printf("???");
|
|
break;
|
|
}
|
|
while (i-- && cp < ep) {
|
|
safeputchar(*cp);
|
|
cp++;
|
|
}
|
|
if (cp + 1 < ep && *cp)
|
|
printf(".");
|
|
} else {
|
|
if (cp == ep) {
|
|
/* FQDN */
|
|
printf(".");
|
|
} else if (cp + 1 == ep && *cp == '\0') {
|
|
/* truncated */
|
|
} else {
|
|
/* invalid */
|
|
printf("???");
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
printf("\"");
|
|
}
|
|
|
|
void
|
|
icmp6_nodeinfo_print(int icmp6len, const u_char *bp, const u_char *ep)
|
|
{
|
|
struct icmp6_nodeinfo *ni6;
|
|
struct icmp6_hdr *dp;
|
|
const u_char *cp;
|
|
int siz, i;
|
|
int needcomma;
|
|
|
|
dp = (struct icmp6_hdr *)bp;
|
|
ni6 = (struct icmp6_nodeinfo *)bp;
|
|
siz = ep - bp;
|
|
|
|
switch (ni6->ni_type) {
|
|
case ICMP6_NI_QUERY:
|
|
if (siz == sizeof(*dp) + 4) {
|
|
/* KAME who-are-you */
|
|
printf("icmp6: who-are-you request");
|
|
break;
|
|
}
|
|
printf("icmp6: node information query");
|
|
|
|
TCHECK2(*dp, sizeof(*ni6));
|
|
ni6 = (struct icmp6_nodeinfo *)dp;
|
|
printf(" ("); /*)*/
|
|
switch (ntohs(ni6->ni_qtype)) {
|
|
case NI_QTYPE_NOOP:
|
|
printf("noop");
|
|
break;
|
|
case NI_QTYPE_SUPTYPES:
|
|
printf("supported qtypes");
|
|
i = ntohs(ni6->ni_flags);
|
|
if (i)
|
|
printf(" [%s]", (i & 0x01) ? "C" : "");
|
|
break;
|
|
break;
|
|
case NI_QTYPE_FQDN:
|
|
printf("DNS name");
|
|
break;
|
|
case NI_QTYPE_NODEADDR:
|
|
printf("node addresses");
|
|
i = ni6->ni_flags;
|
|
if (!i)
|
|
break;
|
|
/* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
|
|
printf(" [%s%s%s%s%s%s]",
|
|
(i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
|
|
(i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
|
|
(i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
|
|
(i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
|
|
(i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
|
|
(i & NI_NODEADDR_FLAG_ALL) ? "A" : "");
|
|
break;
|
|
default:
|
|
printf("unknown");
|
|
break;
|
|
}
|
|
|
|
if (ni6->ni_qtype == NI_QTYPE_NOOP ||
|
|
ni6->ni_qtype == NI_QTYPE_SUPTYPES) {
|
|
if (siz != sizeof(*ni6))
|
|
if (vflag)
|
|
printf(", invalid len");
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
|
|
|
|
/* XXX backward compat, icmp-name-lookup-03 */
|
|
if (siz == sizeof(*ni6)) {
|
|
printf(", 03 draft");
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
|
|
switch (ni6->ni_code) {
|
|
case ICMP6_NI_SUBJ_IPV6:
|
|
if (!TTEST2(*dp,
|
|
sizeof(*ni6) + sizeof(struct in6_addr)))
|
|
break;
|
|
if (siz != sizeof(*ni6) + sizeof(struct in6_addr)) {
|
|
if (vflag)
|
|
printf(", invalid subject len");
|
|
break;
|
|
}
|
|
printf(", subject=%s",
|
|
getname6((const u_char *)(ni6 + 1)));
|
|
break;
|
|
case ICMP6_NI_SUBJ_FQDN:
|
|
printf(", subject=DNS name");
|
|
cp = (const u_char *)(ni6 + 1);
|
|
if (cp[0] == ep - cp - 1) {
|
|
/* icmp-name-lookup-03, pascal string */
|
|
if (vflag)
|
|
printf(", 03 draft");
|
|
cp++;
|
|
printf(", \"");
|
|
while (cp < ep) {
|
|
safeputchar(*cp);
|
|
cp++;
|
|
}
|
|
printf("\"");
|
|
} else
|
|
dnsname_print(cp, ep);
|
|
break;
|
|
case ICMP6_NI_SUBJ_IPV4:
|
|
if (!TTEST2(*dp, sizeof(*ni6) + sizeof(struct in_addr)))
|
|
break;
|
|
if (siz != sizeof(*ni6) + sizeof(struct in_addr)) {
|
|
if (vflag)
|
|
printf(", invalid subject len");
|
|
break;
|
|
}
|
|
printf(", subject=%s",
|
|
getname((const u_char *)(ni6 + 1)));
|
|
break;
|
|
default:
|
|
printf(", unknown subject");
|
|
break;
|
|
}
|
|
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
|
|
case ICMP6_NI_REPLY:
|
|
if (icmp6len > siz) {
|
|
printf("[|icmp6: node information reply]");
|
|
break;
|
|
}
|
|
|
|
needcomma = 0;
|
|
|
|
ni6 = (struct icmp6_nodeinfo *)dp;
|
|
printf("icmp6: node information reply");
|
|
printf(" ("); /*)*/
|
|
switch (ni6->ni_code) {
|
|
case ICMP6_NI_SUCCESS:
|
|
if (vflag) {
|
|
printf("success");
|
|
needcomma++;
|
|
}
|
|
break;
|
|
case ICMP6_NI_REFUSED:
|
|
printf("refused");
|
|
needcomma++;
|
|
if (siz != sizeof(*ni6))
|
|
if (vflag)
|
|
printf(", invalid length");
|
|
break;
|
|
case ICMP6_NI_UNKNOWN:
|
|
printf("unknown");
|
|
needcomma++;
|
|
if (siz != sizeof(*ni6))
|
|
if (vflag)
|
|
printf(", invalid length");
|
|
break;
|
|
}
|
|
|
|
if (ni6->ni_code != ICMP6_NI_SUCCESS) {
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
|
|
switch (ntohs(ni6->ni_qtype)) {
|
|
case NI_QTYPE_NOOP:
|
|
if (needcomma)
|
|
printf(", ");
|
|
printf("noop");
|
|
if (siz != sizeof(*ni6))
|
|
if (vflag)
|
|
printf(", invalid length");
|
|
break;
|
|
case NI_QTYPE_SUPTYPES:
|
|
if (needcomma)
|
|
printf(", ");
|
|
printf("supported qtypes");
|
|
i = ntohs(ni6->ni_flags);
|
|
if (i)
|
|
printf(" [%s]", (i & 0x01) ? "C" : "");
|
|
break;
|
|
case NI_QTYPE_FQDN:
|
|
if (needcomma)
|
|
printf(", ");
|
|
printf("DNS name");
|
|
cp = (const u_char *)(ni6 + 1) + 4;
|
|
if (cp[0] == ep - cp - 1) {
|
|
/* icmp-name-lookup-03, pascal string */
|
|
if (vflag)
|
|
printf(", 03 draft");
|
|
cp++;
|
|
printf(", \"");
|
|
while (cp < ep) {
|
|
safeputchar(*cp);
|
|
cp++;
|
|
}
|
|
printf("\"");
|
|
} else
|
|
dnsname_print(cp, ep);
|
|
if ((ntohs(ni6->ni_flags) & 0x01) != 0)
|
|
printf(" [TTL=%u]", *(u_int32_t *)(ni6 + 1));
|
|
break;
|
|
case NI_QTYPE_NODEADDR:
|
|
if (needcomma)
|
|
printf(", ");
|
|
printf("node addresses");
|
|
i = sizeof(*ni6);
|
|
while (i < siz) {
|
|
if (i + sizeof(struct in6_addr) + sizeof(int32_t) > siz)
|
|
break;
|
|
printf(" %s", getname6(bp + i));
|
|
i += sizeof(struct in6_addr);
|
|
printf("(%d)", (int32_t)ntohl(*(int32_t *)(bp + i)));
|
|
i += sizeof(int32_t);
|
|
}
|
|
i = ni6->ni_flags;
|
|
if (!i)
|
|
break;
|
|
printf(" [%s%s%s%s%s%s%s]",
|
|
(i & NI_NODEADDR_FLAG_ANYCAST) ? "a" : "",
|
|
(i & NI_NODEADDR_FLAG_GLOBAL) ? "G" : "",
|
|
(i & NI_NODEADDR_FLAG_SITELOCAL) ? "S" : "",
|
|
(i & NI_NODEADDR_FLAG_LINKLOCAL) ? "L" : "",
|
|
(i & NI_NODEADDR_FLAG_COMPAT) ? "C" : "",
|
|
(i & NI_NODEADDR_FLAG_ALL) ? "A" : "",
|
|
(i & NI_NODEADDR_FLAG_TRUNCATE) ? "T" : "");
|
|
break;
|
|
default:
|
|
if (needcomma)
|
|
printf(", ");
|
|
printf("unknown");
|
|
break;
|
|
}
|
|
|
|
/*(*/
|
|
printf(")");
|
|
break;
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
fputs("[|icmp6]", stdout);
|
|
}
|
|
|
|
void
|
|
icmp6_rrenum_print(int icmp6len, const u_char *bp, const u_char *ep)
|
|
{
|
|
struct icmp6_router_renum *rr6;
|
|
struct icmp6_hdr *dp;
|
|
size_t siz;
|
|
const char *cp;
|
|
struct rr_pco_match *match;
|
|
struct rr_pco_use *use;
|
|
char hbuf[NI_MAXHOST];
|
|
int n;
|
|
|
|
dp = (struct icmp6_hdr *)bp;
|
|
rr6 = (struct icmp6_router_renum *)bp;
|
|
siz = ep - bp;
|
|
cp = (const char *)(rr6 + 1);
|
|
|
|
TCHECK(rr6->rr_reserved);
|
|
switch (rr6->rr_code) {
|
|
case ICMP6_ROUTER_RENUMBERING_COMMAND:
|
|
printf("router renum: command");
|
|
break;
|
|
case ICMP6_ROUTER_RENUMBERING_RESULT:
|
|
printf("router renum: result");
|
|
break;
|
|
case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
|
|
printf("router renum: sequence number reset");
|
|
break;
|
|
default:
|
|
printf("router renum: code-#%d", rr6->rr_code);
|
|
break;
|
|
}
|
|
|
|
printf(", seq=%u", (u_int32_t)ntohl(rr6->rr_seqnum));
|
|
|
|
if (vflag) {
|
|
#define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
|
|
printf("["); /*]*/
|
|
if (rr6->rr_flags) {
|
|
printf("%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST, "T"),
|
|
F(ICMP6_RR_FLAGS_REQRESULT, "R"),
|
|
F(ICMP6_RR_FLAGS_FORCEAPPLY, "A"),
|
|
F(ICMP6_RR_FLAGS_SPECSITE, "S"),
|
|
F(ICMP6_RR_FLAGS_PREVDONE, "P"));
|
|
}
|
|
printf("seg=%u,", rr6->rr_segnum);
|
|
printf("maxdelay=%u", rr6->rr_maxdelay);
|
|
if (rr6->rr_reserved)
|
|
printf("rsvd=0x%x", (u_int16_t)ntohs(rr6->rr_reserved));
|
|
/*[*/
|
|
printf("]");
|
|
#undef F
|
|
}
|
|
|
|
if (rr6->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
|
|
match = (struct rr_pco_match *)cp;
|
|
cp = (const char *)(match + 1);
|
|
|
|
TCHECK(match->rpm_prefix);
|
|
|
|
if (vflag > 1)
|
|
printf("\n\t");
|
|
else
|
|
printf(" ");
|
|
printf("match("); /*)*/
|
|
switch (match->rpm_code) {
|
|
case RPM_PCO_ADD: printf("add"); break;
|
|
case RPM_PCO_CHANGE: printf("change"); break;
|
|
case RPM_PCO_SETGLOBAL: printf("setglobal"); break;
|
|
default: printf("#%u", match->rpm_code); break;
|
|
}
|
|
|
|
if (vflag) {
|
|
printf(",ord=%u", match->rpm_ordinal);
|
|
printf(",min=%u", match->rpm_minlen);
|
|
printf(",max=%u", match->rpm_maxlen);
|
|
}
|
|
if (inet_ntop(AF_INET6, &match->rpm_prefix, hbuf, sizeof(hbuf)))
|
|
printf(",%s/%u", hbuf, match->rpm_matchlen);
|
|
else
|
|
printf(",?/%u", match->rpm_matchlen);
|
|
/*(*/
|
|
printf(")");
|
|
|
|
n = match->rpm_len - 3;
|
|
if (n % 4)
|
|
goto trunc;
|
|
n /= 4;
|
|
while (n-- > 0) {
|
|
use = (struct rr_pco_use *)cp;
|
|
cp = (const char *)(use + 1);
|
|
|
|
TCHECK(use->rpu_prefix);
|
|
|
|
if (vflag > 1)
|
|
printf("\n\t");
|
|
else
|
|
printf(" ");
|
|
printf("use("); /*)*/
|
|
if (use->rpu_flags) {
|
|
#define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
|
|
printf("%s%s,",
|
|
F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, "V"),
|
|
F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, "P"));
|
|
#undef F
|
|
}
|
|
if (vflag) {
|
|
printf("mask=0x%x,", use->rpu_ramask);
|
|
printf("raflags=0x%x,", use->rpu_raflags);
|
|
if (~use->rpu_vltime == 0)
|
|
printf("vltime=infty,");
|
|
else
|
|
printf("vltime=%u,",
|
|
(u_int32_t)ntohl(use->rpu_vltime));
|
|
if (~use->rpu_pltime == 0)
|
|
printf("pltime=infty,");
|
|
else
|
|
printf("pltime=%u,",
|
|
(u_int32_t)ntohl(use->rpu_pltime));
|
|
}
|
|
if (inet_ntop(AF_INET6, &use->rpu_prefix, hbuf,
|
|
sizeof(hbuf)))
|
|
printf("%s/%u/%u", hbuf, use->rpu_uselen,
|
|
use->rpu_keeplen);
|
|
else
|
|
printf("?/%u/%u", use->rpu_uselen,
|
|
use->rpu_keeplen);
|
|
/*(*/
|
|
printf(")");
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
trunc:
|
|
fputs("[|icmp6]", stdout);
|
|
}
|
|
|
|
#endif /* INET6 */
|