1017 lines
25 KiB
C
1017 lines
25 KiB
C
/* $NetBSD: print-icmp6.c,v 1.11 2001/02/19 09:53:50 enami Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that: (1) source code distributions
|
|
* retain the above copyright notice and this paragraph in its entirety, (2)
|
|
* distributions including binary code include the above copyright notice and
|
|
* this paragraph in its entirety in the documentation or other materials
|
|
* provided with the distribution, and (3) all advertising materials mentioning
|
|
* features or use of this software display the following acknowledgement:
|
|
* ``This product includes software developed by the University of California,
|
|
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
|
|
* the University nor the names of its contributors may be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static const char rcsid[] =
|
|
"@(#) /master/usr.sbin/tcpdump/tcpdump/print-icmp.c,v 2.1 1995/02/03 18:14:42 polk Exp (LBL)";
|
|
#else
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: print-icmp6.c,v 1.11 2001/02/19 09:53:50 enami Exp $");
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef INET6
|
|
|
|
#include <ctype.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/if_ether.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_icmp.h>
|
|
#include <netinet/ip_var.h>
|
|
#include <netinet/udp.h>
|
|
#include <netinet/udp_var.h>
|
|
#include <netinet/tcp.h>
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <stdio.h>
|
|
#include <netdb.h>
|
|
|
|
#include <netinet/ip6.h>
|
|
#include <netinet/icmp6.h>
|
|
#include <netinet6/ah.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
|
|
struct nd_opt_advinterval { /* Advertisement interval option */
|
|
u_int8_t nd_opt_adv_type;
|
|
u_int8_t nd_opt_adv_len;
|
|
u_int16_t nd_opt_adv_reserved;
|
|
u_int32_t nd_opt_adv_interval;
|
|
};
|
|
|
|
void icmp6_opt_print(const u_char *, int);
|
|
void mld6_print(const u_char *);
|
|
static struct udphdr *get_upperlayer(u_char *, int *);
|
|
static void dnsname_print(const u_char *, const u_char *);
|
|
void icmp6_nodeinfo_print(int, const u_char *, const u_char *);
|
|
void icmp6_rrenum_print(int, const u_char *, const u_char *);
|
|
|
|
#ifndef abs
|
|
#define abs(a) ((0 < (a)) ? (a) : -(a))
|
|
#endif
|
|
|
|
void
|
|
icmp6_print(register const u_char *bp, register const u_char *bp2)
|
|
{
|
|
const struct icmp6_hdr *dp;
|
|
register const struct ip6_hdr *ip;
|
|
register const char *str;
|
|
register const struct ip6_hdr *oip;
|
|
register const struct udphdr *ouh;
|
|
register int dport;
|
|
register const u_char *ep;
|
|
char buf[256];
|
|
int icmp6len, prot;
|
|
|
|
#if 0
|
|
#define TCHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) goto trunc
|
|
#endif
|
|
|
|
dp = (struct icmp6_hdr *)bp;
|
|
ip = (struct ip6_hdr *)bp2;
|
|
oip = (struct ip6_hdr *)(dp + 1);
|
|
str = buf;
|
|
/* 'ep' points to the end of available data. */
|
|
ep = snapend;
|
|
if (ip->ip6_plen)
|
|
icmp6len = (ntohs(ip->ip6_plen) + sizeof(struct ip6_hdr) -
|
|
(bp - bp2));
|
|
else /* XXX: jumbo payload case... */
|
|
icmp6len = snapend - bp;
|
|
|
|
#if 0
|
|
(void)printf("%s > %s: ",
|
|
ip6addr_string(&ip->ip6_src),
|
|
ip6addr_string(&ip->ip6_dst));
|
|
#endif
|
|
|
|
TCHECK(dp->icmp6_code);
|
|
switch (dp->icmp6_type) {
|
|
case ICMP6_DST_UNREACH:
|
|
TCHECK(oip->ip6_dst);
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_DST_UNREACH_NOROUTE:
|
|
printf("icmp6: %s unreachable route",
|
|
ip6addr_string(&oip->ip6_dst));
|
|
break;
|
|
case ICMP6_DST_UNREACH_ADMIN:
|
|
printf("icmp6: %s unreachable prohibited",
|
|
ip6addr_string(&oip->ip6_dst));
|
|
break;
|
|
case ICMP6_DST_UNREACH_BEYONDSCOPE:
|
|
printf("icmp6: %s beyond scope of source address %s",
|
|
ip6addr_string(&oip->ip6_dst),
|
|
ip6addr_string(&oip->ip6_src));
|
|
break;
|
|
case ICMP6_DST_UNREACH_ADDR:
|
|
printf("icmp6: %s unreachable address",
|
|
ip6addr_string(&oip->ip6_dst));
|
|
break;
|
|
case ICMP6_DST_UNREACH_NOPORT:
|
|
if ((ouh = get_upperlayer((u_char *)oip, &prot))
|
|
== NULL)
|
|
goto trunc;
|
|
|
|
dport = ntohs(ouh->uh_dport);
|
|
switch (prot) {
|
|
case IPPROTO_TCP:
|
|
printf("icmp6: %s tcp port %s unreachable",
|
|
ip6addr_string(&oip->ip6_dst),
|
|
tcpport_string(dport));
|
|
break;
|
|
case IPPROTO_UDP:
|
|
printf("icmp6: %s udp port %s unreachable",
|
|
ip6addr_string(&oip->ip6_dst),
|
|
udpport_string(dport));
|
|
break;
|
|
default:
|
|
printf("icmp6: %s protocol %d port %d unreachable",
|
|
ip6addr_string(&oip->ip6_dst),
|
|
oip->ip6_nxt, dport);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
printf("icmp6: %s unreachable code-#%d",
|
|
ip6addr_string(&oip->ip6_dst),
|
|
dp->icmp6_code);
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_PACKET_TOO_BIG:
|
|
TCHECK(dp->icmp6_mtu);
|
|
printf("icmp6: too big %u\n", (u_int32_t)ntohl(dp->icmp6_mtu));
|
|
break;
|
|
case ICMP6_TIME_EXCEEDED:
|
|
TCHECK(oip->ip6_dst);
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_TIME_EXCEED_TRANSIT:
|
|
printf("icmp6: time exceeded in-transit for %s",
|
|
ip6addr_string(&oip->ip6_dst));
|
|
break;
|
|
case ICMP6_TIME_EXCEED_REASSEMBLY:
|
|
printf("icmp6: ip6 reassembly time exceeded");
|
|
break;
|
|
default:
|
|
printf("icmp6: time exceeded code-#%d",
|
|
dp->icmp6_code);
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_PARAM_PROB:
|
|
TCHECK(oip->ip6_dst);
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_PARAMPROB_HEADER:
|
|
printf("icmp6: parameter problem errorneous - octet %u\n",
|
|
(u_int32_t)ntohl(dp->icmp6_pptr));
|
|
break;
|
|
case ICMP6_PARAMPROB_NEXTHEADER:
|
|
printf("icmp6: parameter problem next header - octet %u\n",
|
|
(u_int32_t)ntohl(dp->icmp6_pptr));
|
|
break;
|
|
case ICMP6_PARAMPROB_OPTION:
|
|
printf("icmp6: parameter problem option - octet %u\n",
|
|
(u_int32_t)ntohl(dp->icmp6_pptr));
|
|
break;
|
|
default:
|
|
printf("icmp6: parameter problem code-#%d",
|
|
dp->icmp6_code);
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_ECHO_REQUEST:
|
|
printf("icmp6: echo request");
|
|
break;
|
|
case ICMP6_ECHO_REPLY:
|
|
printf("icmp6: echo reply");
|
|
break;
|
|
case ICMP6_MEMBERSHIP_QUERY:
|
|
printf("icmp6: multicast listener query ");
|
|
mld6_print((const u_char *)dp);
|
|
break;
|
|
case ICMP6_MEMBERSHIP_REPORT:
|
|
printf("icmp6: multicast listener report ");
|
|
mld6_print((const u_char *)dp);
|
|
break;
|
|
case ICMP6_MEMBERSHIP_REDUCTION:
|
|
printf("icmp6: multicast listener done ");
|
|
mld6_print((const u_char *)dp);
|
|
break;
|
|
case ND_ROUTER_SOLICIT:
|
|
printf("icmp6: router solicitation ");
|
|
if (vflag) {
|
|
#define RTSOLLEN 8
|
|
icmp6_opt_print((const u_char *)dp + RTSOLLEN,
|
|
icmp6len - RTSOLLEN);
|
|
}
|
|
break;
|
|
case ND_ROUTER_ADVERT:
|
|
printf("icmp6: router advertisement");
|
|
if (vflag) {
|
|
struct nd_router_advert *p;
|
|
|
|
p = (struct nd_router_advert *)dp;
|
|
TCHECK(p->nd_ra_retransmit);
|
|
printf("(chlim=%d, ", (int)p->nd_ra_curhoplimit);
|
|
if (p->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)
|
|
printf("M");
|
|
if (p->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)
|
|
printf("O");
|
|
#ifndef ND_RA_FLAG_HA
|
|
#define ND_RA_FLAG_HA 0x20
|
|
#endif
|
|
if (p->nd_ra_flags_reserved & ND_RA_FLAG_HA)
|
|
printf("H");
|
|
if (p->nd_ra_flags_reserved != 0)
|
|
printf(" ");
|
|
printf("router_ltime=%d, ", ntohs(p->nd_ra_router_lifetime));
|
|
printf("reachable_time=%u, ",
|
|
(u_int32_t)ntohl(p->nd_ra_reachable));
|
|
printf("retrans_time=%u)",
|
|
(u_int32_t)ntohl(p->nd_ra_retransmit));
|
|
#define RTADVLEN 16
|
|
icmp6_opt_print((const u_char *)dp + RTADVLEN,
|
|
icmp6len - RTADVLEN);
|
|
}
|
|
break;
|
|
case ND_NEIGHBOR_SOLICIT:
|
|
{
|
|
struct nd_neighbor_solicit *p;
|
|
p = (struct nd_neighbor_solicit *)dp;
|
|
TCHECK(p->nd_ns_target);
|
|
printf("icmp6: neighbor sol: who has %s",
|
|
ip6addr_string(&p->nd_ns_target));
|
|
if (vflag) {
|
|
#define NDSOLLEN 24
|
|
icmp6_opt_print((const u_char *)dp + NDSOLLEN,
|
|
icmp6len - NDSOLLEN);
|
|
}
|
|
}
|
|
break;
|
|
case ND_NEIGHBOR_ADVERT:
|
|
{
|
|
struct nd_neighbor_advert *p;
|
|
|
|
p = (struct nd_neighbor_advert *)dp;
|
|
TCHECK(p->nd_na_target);
|
|
printf("icmp6: neighbor adv: tgt is %s",
|
|
ip6addr_string(&p->nd_na_target));
|
|
if (vflag) {
|
|
#define ND_NA_FLAG_ALL \
|
|
(ND_NA_FLAG_ROUTER|ND_NA_FLAG_SOLICITED|ND_NA_FLAG_OVERRIDE)
|
|
/* we don't need ntohl() here. see advanced-api-04. */
|
|
if (p->nd_na_flags_reserved & ND_NA_FLAG_ALL) {
|
|
#undef ND_NA_FLAG_ALL
|
|
u_int32_t flags;
|
|
|
|
flags = p->nd_na_flags_reserved;
|
|
printf("(");
|
|
if (flags & ND_NA_FLAG_ROUTER)
|
|
printf("R");
|
|
if (flags & ND_NA_FLAG_SOLICITED)
|
|
printf("S");
|
|
if (flags & ND_NA_FLAG_OVERRIDE)
|
|
printf("O");
|
|
printf(")");
|
|
}
|
|
#define NDADVLEN 24
|
|
icmp6_opt_print((const u_char *)dp + NDADVLEN,
|
|
icmp6len - NDADVLEN);
|
|
#undef NDADVLEN
|
|
}
|
|
}
|
|
break;
|
|
case ND_REDIRECT:
|
|
#define RDR(i) ((struct nd_redirect *)(i))
|
|
TCHECK(RDR(dp)->nd_rd_dst);
|
|
printf("icmp6: redirect %s",
|
|
getname6((const u_char *)&RDR(dp)->nd_rd_dst));
|
|
printf(" to %s",
|
|
getname6((const u_char*)&RDR(dp)->nd_rd_target));
|
|
#define REDIRECTLEN 40
|
|
if (vflag) {
|
|
icmp6_opt_print((const u_char *)dp + REDIRECTLEN,
|
|
icmp6len - REDIRECTLEN);
|
|
}
|
|
break;
|
|
#undef REDIRECTLEN
|
|
#undef RDR
|
|
case ICMP6_ROUTER_RENUMBERING:
|
|
icmp6_rrenum_print(icmp6len, bp, ep);
|
|
break;
|
|
case ICMP6_NI_QUERY:
|
|
case ICMP6_NI_REPLY:
|
|
icmp6_nodeinfo_print(icmp6len, bp, ep);
|
|
break;
|
|
default:
|
|
printf("icmp6: type-#%d", dp->icmp6_type);
|
|
break;
|
|
}
|
|
return;
|
|
trunc:
|
|
fputs("[|icmp6]", stdout);
|
|
#if 0
|
|
#undef TCHECK
|
|
#endif
|
|
}
|
|
|
|
static struct udphdr *
|
|
get_upperlayer(register u_char *bp, int *prot)
|
|
{
|
|
register const u_char *ep;
|
|
struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
|
|
struct udphdr *uh;
|
|
struct ip6_hbh *hbh;
|
|
struct ip6_frag *fragh;
|
|
struct ah *ah;
|
|
int nh, hlen;
|
|
|
|
/* 'ep' points to the end of available data. */
|
|
ep = snapend;
|
|
|
|
if (TTEST(ip6->ip6_nxt) == 0)
|
|
return NULL;
|
|
|
|
nh = ip6->ip6_nxt;
|
|
hlen = sizeof(struct ip6_hdr);
|
|
|
|
while (bp < snapend) {
|
|
bp += hlen;
|
|
|
|
switch(nh) {
|
|
case IPPROTO_UDP:
|
|
case IPPROTO_TCP:
|
|
uh = (struct udphdr *)bp;
|
|
if (TTEST(uh->uh_dport)) {
|
|
*prot = nh;
|
|
return(uh);
|
|
}
|
|
else
|
|
return(NULL);
|
|
/* NOTREACHED */
|
|
|
|
case IPPROTO_HOPOPTS:
|
|
case IPPROTO_DSTOPTS:
|
|
case IPPROTO_ROUTING:
|
|
hbh = (struct ip6_hbh *)bp;
|
|
if (TTEST(hbh->ip6h_len) == 0)
|
|
return(NULL);
|
|
nh = hbh->ip6h_nxt;
|
|
hlen = (hbh->ip6h_len + 1) << 3;
|
|
break;
|
|
|
|
case IPPROTO_FRAGMENT: /* this should be odd, but try anyway */
|
|
fragh = (struct ip6_frag *)bp;
|
|
if (TTEST(fragh->ip6f_offlg) == 0)
|
|
return(NULL);
|
|
/* fragments with non-zero offset are meaningless */
|
|
if ((fragh->ip6f_offlg & IP6F_OFF_MASK) != 0)
|
|
return(NULL);
|
|
nh = fragh->ip6f_nxt;
|
|
hlen = sizeof(struct ip6_frag);
|
|
break;
|
|
|
|
case IPPROTO_AH:
|
|
ah = (struct ah *)bp;
|
|
if (TTEST(ah->ah_len) == 0)
|
|
return(NULL);
|
|
nh = ah->ah_nxt;
|
|
hlen = (ah->ah_len + 2) << 2;
|
|
break;
|
|
|
|
default: /* unknown or undecodable header */
|
|
*prot = nh; /* meaningless, but set here anyway */
|
|
return(NULL);
|
|
}
|
|
}
|
|
|
|
return(NULL); /* should be notreached, though */
|
|
}
|
|
|
|
void
|
|
icmp6_opt_print(register const u_char *bp, int resid)
|
|
{
|
|
register const struct nd_opt_hdr *op;
|
|
register const struct nd_opt_hdr *opl; /* why there's no struct? */
|
|
register const struct nd_opt_prefix_info *opp;
|
|
register const struct icmp6_opts_redirect *opr;
|
|
register const struct nd_opt_mtu *opm;
|
|
register const struct nd_opt_advinterval *opa;
|
|
register const u_char *ep;
|
|
int opts_len;
|
|
#if 0
|
|
register const struct ip6_hdr *ip;
|
|
register const char *str;
|
|
register const struct ip6_hdr *oip;
|
|
register const struct udphdr *ouh;
|
|
register int hlen, dport;
|
|
char buf[256];
|
|
#endif
|
|
|
|
#define ECHECK(var) if ((u_char *)&(var) > ep - sizeof(var)) return
|
|
|
|
op = (struct nd_opt_hdr *)bp;
|
|
#if 0
|
|
ip = (struct ip6_hdr *)bp2;
|
|
oip = &dp->icmp6_ip6;
|
|
str = buf;
|
|
#endif
|
|
/* 'ep' points to the end of available data. */
|
|
ep = snapend;
|
|
|
|
ECHECK(op->nd_opt_len);
|
|
if (resid <= 0)
|
|
return;
|
|
switch (op->nd_opt_type) {
|
|
case ND_OPT_SOURCE_LINKADDR:
|
|
opl = (struct nd_opt_hdr *)op;
|
|
#if 1
|
|
if ((u_char *)opl + (opl->nd_opt_len << 3) > ep)
|
|
goto trunc;
|
|
#else
|
|
TCHECK((u_char *)opl + (opl->nd_opt_len << 3) - 1);
|
|
#endif
|
|
printf("(src lladdr: %s", /*)*/
|
|
etheraddr_string((u_char *)(opl + 1)));
|
|
if (opl->nd_opt_len != 1)
|
|
printf("!");
|
|
/*(*/
|
|
printf(")");
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
case ND_OPT_TARGET_LINKADDR:
|
|
opl = (struct nd_opt_hdr *)op;
|
|
#if 1
|
|
if ((u_char *)opl + (opl->nd_opt_len << 3) > ep)
|
|
goto trunc;
|
|
#else
|
|
TCHECK((u_char *)opl + (opl->nd_opt_len << 3) - 1);
|
|
#endif
|
|
printf("(tgt lladdr: %s", /*)*/
|
|
etheraddr_string((u_char *)(opl + 1)));
|
|
if (opl->nd_opt_len != 1)
|
|
printf("!");
|
|
/*(*/
|
|
printf(")");
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
case ND_OPT_PREFIX_INFORMATION:
|
|
opp = (struct nd_opt_prefix_info *)op;
|
|
TCHECK(opp->nd_opt_pi_prefix);
|
|
printf("(prefix info: "); /*)*/
|
|
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");
|
|
#ifndef ND_OPT_PI_FLAG_ROUTER
|
|
#define ND_OPT_PI_FLAG_ROUTER 0x20 /* 2292bis-02 */
|
|
#endif
|
|
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=");
|
|
if ((u_int32_t)ntohl(opp->nd_opt_pi_valid_time) == ~0U)
|
|
printf("infinity");
|
|
else {
|
|
printf("%u", (u_int32_t)ntohl(opp->nd_opt_pi_valid_time));
|
|
}
|
|
printf(", ");
|
|
printf("preferred_ltime=");
|
|
if ((u_int32_t)ntohl(opp->nd_opt_pi_preferred_time) == ~0U)
|
|
printf("infinity");
|
|
else {
|
|
printf("%u", (u_int32_t)ntohl(opp->nd_opt_pi_preferred_time));
|
|
}
|
|
printf(", ");
|
|
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(")");
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
case ND_OPT_REDIRECTED_HEADER:
|
|
opr = (struct icmp6_opts_redirect *)op;
|
|
printf("(redirect)");
|
|
/* xxx */
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
case ND_OPT_MTU:
|
|
opm = (struct nd_opt_mtu *)op;
|
|
TCHECK(opm->nd_opt_mtu_mtu);
|
|
printf("(mtu: "); /*)*/
|
|
printf("mtu=%u", (u_int32_t)ntohl(opm->nd_opt_mtu_mtu));
|
|
if (opm->nd_opt_mtu_len != 1)
|
|
printf("!");
|
|
printf(")");
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
#ifndef ND_OPT_ADVINTERVAL
|
|
#define ND_OPT_ADVINTERVAL 7 /* 2292bis-02 */
|
|
#endif
|
|
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(")");
|
|
icmp6_opt_print((const u_char *)op + (op->nd_opt_len << 3),
|
|
resid - (op->nd_opt_len << 3));
|
|
break;
|
|
default:
|
|
opts_len = op->nd_opt_len;
|
|
printf("(unknwon opt_type=%d, opt_len=%d)",
|
|
op->nd_opt_type, opts_len);
|
|
if (opts_len == 0)
|
|
opts_len = 1; /* XXX */
|
|
icmp6_opt_print((const u_char *)op + (opts_len << 3),
|
|
resid - (opts_len << 3));
|
|
break;
|
|
}
|
|
return;
|
|
trunc:
|
|
fputs("[ndp opt]", stdout);
|
|
return;
|
|
#undef ECHECK
|
|
}
|
|
|
|
void
|
|
mld6_print(register const u_char *bp)
|
|
{
|
|
register struct mld6_hdr *mp = (struct mld6_hdr *)bp;
|
|
register 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)", 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)
|
|
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)
|
|
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 */
|