870 lines
20 KiB
C
870 lines
20 KiB
C
/*
|
|
* Copyright (C) 1998 and 1999 WIDE Project.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
/*
|
|
* RFC3315: DHCPv6
|
|
* supported DHCPv6 options:
|
|
* RFC3319: Session Initiation Protocol (SIP) Servers options,
|
|
* RFC3633: IPv6 Prefix options,
|
|
* RFC3646: DNS Configuration options,
|
|
* RFC3898: Network Information Service (NIS) Configuration options,
|
|
* RFC4075: Simple Network Time Protocol (SNTP) Configuration option,
|
|
* RFC4242: Information Refresh Time option,
|
|
* RFC4280: Broadcast and Multicast Control Servers options,
|
|
* RFC6334: Dual-Stack Lite option,
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] _U_ =
|
|
"@(#) $Header: /tcpdump/master/tcpdump/print-dhcp6.c,v 1.37 2008-02-06 10:26:09 guy Exp $";
|
|
#endif
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <tcpdump-stdinc.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
#include "extract.h"
|
|
|
|
/* lease duration */
|
|
#define DHCP6_DURATITION_INFINITE 0xffffffff
|
|
|
|
/* Error Values */
|
|
#define DH6ERR_FAILURE 16
|
|
#define DH6ERR_AUTHFAIL 17
|
|
#define DH6ERR_POORLYFORMED 18
|
|
#define DH6ERR_UNAVAIL 19
|
|
#define DH6ERR_OPTUNAVAIL 20
|
|
|
|
/* Message type */
|
|
#define DH6_SOLICIT 1
|
|
#define DH6_ADVERTISE 2
|
|
#define DH6_REQUEST 3
|
|
#define DH6_CONFIRM 4
|
|
#define DH6_RENEW 5
|
|
#define DH6_REBIND 6
|
|
#define DH6_REPLY 7
|
|
#define DH6_RELEASE 8
|
|
#define DH6_DECLINE 9
|
|
#define DH6_RECONFIGURE 10
|
|
#define DH6_INFORM_REQ 11
|
|
#define DH6_RELAY_FORW 12
|
|
#define DH6_RELAY_REPLY 13
|
|
#define DH6_LEASEQUERY 14
|
|
#define DH6_LQ_REPLY 15
|
|
|
|
/* DHCP6 base packet format */
|
|
struct dhcp6 {
|
|
union {
|
|
u_int8_t m;
|
|
u_int32_t x;
|
|
} dh6_msgtypexid;
|
|
/* options follow */
|
|
};
|
|
#define dh6_msgtype dh6_msgtypexid.m
|
|
#define dh6_xid dh6_msgtypexid.x
|
|
#define DH6_XIDMASK 0x00ffffff
|
|
|
|
/* DHCPv6 relay messages */
|
|
struct dhcp6_relay {
|
|
u_int8_t dh6relay_msgtype;
|
|
u_int8_t dh6relay_hcnt;
|
|
u_int8_t dh6relay_linkaddr[16]; /* XXX: badly aligned */
|
|
u_int8_t dh6relay_peeraddr[16];
|
|
/* options follow */
|
|
};
|
|
|
|
/* options */
|
|
#define DH6OPT_CLIENTID 1
|
|
#define DH6OPT_SERVERID 2
|
|
#define DH6OPT_IA_NA 3
|
|
#define DH6OPT_IA_TA 4
|
|
#define DH6OPT_IA_ADDR 5
|
|
#define DH6OPT_ORO 6
|
|
#define DH6OPT_PREFERENCE 7
|
|
# define DH6OPT_PREF_MAX 255
|
|
#define DH6OPT_ELAPSED_TIME 8
|
|
#define DH6OPT_RELAY_MSG 9
|
|
/*#define DH6OPT_SERVER_MSG 10 deprecated */
|
|
#define DH6OPT_AUTH 11
|
|
# define DH6OPT_AUTHPROTO_DELAYED 2
|
|
# define DH6OPT_AUTHPROTO_RECONFIG 3
|
|
# define DH6OPT_AUTHALG_HMACMD5 1
|
|
# define DH6OPT_AUTHRDM_MONOCOUNTER 0
|
|
# define DH6OPT_AUTHRECONFIG_KEY 1
|
|
# define DH6OPT_AUTHRECONFIG_HMACMD5 2
|
|
#define DH6OPT_UNICAST 12
|
|
#define DH6OPT_STATUS_CODE 13
|
|
# define DH6OPT_STCODE_SUCCESS 0
|
|
# define DH6OPT_STCODE_UNSPECFAIL 1
|
|
# define DH6OPT_STCODE_NOADDRAVAIL 2
|
|
# define DH6OPT_STCODE_NOBINDING 3
|
|
# define DH6OPT_STCODE_NOTONLINK 4
|
|
# define DH6OPT_STCODE_USEMULTICAST 5
|
|
# define DH6OPT_STCODE_NOPREFIXAVAIL 6
|
|
# define DH6OPT_STCODE_UNKNOWNQUERYTYPE 7
|
|
# define DH6OPT_STCODE_MALFORMEDQUERY 8
|
|
# define DH6OPT_STCODE_NOTCONFIGURED 9
|
|
# define DH6OPT_STCODE_NOTALLOWED 10
|
|
#define DH6OPT_RAPID_COMMIT 14
|
|
#define DH6OPT_USER_CLASS 15
|
|
#define DH6OPT_VENDOR_CLASS 16
|
|
#define DH6OPT_VENDOR_OPTS 17
|
|
#define DH6OPT_INTERFACE_ID 18
|
|
#define DH6OPT_RECONF_MSG 19
|
|
#define DH6OPT_RECONF_ACCEPT 20
|
|
#define DH6OPT_SIP_SERVER_D 21
|
|
#define DH6OPT_SIP_SERVER_A 22
|
|
#define DH6OPT_DNS 23
|
|
#define DH6OPT_DNSNAME 24
|
|
#define DH6OPT_IA_PD 25
|
|
#define DH6OPT_IA_PD_PREFIX 26
|
|
#define DH6OPT_NIS_SERVERS 27
|
|
#define DH6OPT_NISP_SERVERS 28
|
|
#define DH6OPT_NIS_NAME 29
|
|
#define DH6OPT_NISP_NAME 30
|
|
#define DH6OPT_NTP_SERVERS 31
|
|
#define DH6OPT_LIFETIME 32
|
|
#define DH6OPT_BCMCS_SERVER_D 33
|
|
#define DH6OPT_BCMCS_SERVER_A 34
|
|
#define DH6OPT_GEOCONF_CIVIC 36
|
|
#define DH6OPT_REMOTE_ID 37
|
|
#define DH6OPT_SUBSCRIBER_ID 38
|
|
#define DH6OPT_CLIENT_FQDN 39
|
|
#define DH6OPT_PANA_AGENT 40
|
|
#define DH6OPT_NEW_POSIX_TIMEZONE 41
|
|
#define DH6OPT_NEW_TZDB_TIMEZONE 42
|
|
#define DH6OPT_ERO 43
|
|
#define DH6OPT_LQ_QUERY 44
|
|
#define DH6OPT_CLIENT_DATA 45
|
|
#define DH6OPT_CLT_TIME 46
|
|
#define DH6OPT_LQ_RELAY_DATA 47
|
|
#define DH6OPT_LQ_CLIENT_LINK 48
|
|
#define DH6OPT_AFTR_NAME 64
|
|
|
|
struct dhcp6opt {
|
|
u_int16_t dh6opt_type;
|
|
u_int16_t dh6opt_len;
|
|
/* type-dependent data follows */
|
|
};
|
|
|
|
static const char *
|
|
dhcp6opt_name(int type)
|
|
{
|
|
static char genstr[sizeof("opt_65535") + 1]; /* XXX thread unsafe */
|
|
|
|
if (type > 65535)
|
|
return "INVALID-option";
|
|
|
|
switch(type) {
|
|
case DH6OPT_CLIENTID:
|
|
return "client-ID";
|
|
case DH6OPT_SERVERID:
|
|
return "server-ID";
|
|
case DH6OPT_IA_NA:
|
|
return "IA_NA";
|
|
case DH6OPT_IA_TA:
|
|
return "IA_TA";
|
|
case DH6OPT_IA_ADDR:
|
|
return "IA_ADDR";
|
|
case DH6OPT_ORO:
|
|
return "option-request";
|
|
case DH6OPT_PREFERENCE:
|
|
return "preference";
|
|
case DH6OPT_ELAPSED_TIME:
|
|
return "elapsed-time";
|
|
case DH6OPT_RELAY_MSG:
|
|
return "relay-message";
|
|
case DH6OPT_AUTH:
|
|
return "authentication";
|
|
case DH6OPT_UNICAST:
|
|
return "server-unicast";
|
|
case DH6OPT_STATUS_CODE:
|
|
return "status-code";
|
|
case DH6OPT_RAPID_COMMIT:
|
|
return "rapid-commit";
|
|
case DH6OPT_USER_CLASS:
|
|
return "user-class";
|
|
case DH6OPT_VENDOR_CLASS:
|
|
return "vendor-class";
|
|
case DH6OPT_VENDOR_OPTS:
|
|
return "vendor-specific-info";
|
|
case DH6OPT_INTERFACE_ID:
|
|
return "interface-ID";
|
|
case DH6OPT_RECONF_MSG:
|
|
return "reconfigure-message";
|
|
case DH6OPT_RECONF_ACCEPT:
|
|
return "reconfigure-accept";
|
|
case DH6OPT_SIP_SERVER_D:
|
|
return "SIP-servers-domain";
|
|
case DH6OPT_SIP_SERVER_A:
|
|
return "SIP-servers-address";
|
|
case DH6OPT_DNS:
|
|
return "DNS-server";
|
|
case DH6OPT_DNSNAME:
|
|
return "DNS-search-list";
|
|
case DH6OPT_IA_PD:
|
|
return "IA_PD";
|
|
case DH6OPT_IA_PD_PREFIX:
|
|
return "IA_PD-prefix";
|
|
case DH6OPT_NTP_SERVERS:
|
|
return "NTP-server";
|
|
case DH6OPT_LIFETIME:
|
|
return "lifetime";
|
|
case DH6OPT_NIS_SERVERS:
|
|
return "NIS-server";
|
|
case DH6OPT_NISP_SERVERS:
|
|
return "NIS+-server";
|
|
case DH6OPT_NIS_NAME:
|
|
return "NIS-domain-name";
|
|
case DH6OPT_NISP_NAME:
|
|
return "NIS+-domain-name";
|
|
case DH6OPT_BCMCS_SERVER_D:
|
|
return "BCMCS-domain-name";
|
|
case DH6OPT_BCMCS_SERVER_A:
|
|
return "BCMCS-server";
|
|
case DH6OPT_GEOCONF_CIVIC:
|
|
return "Geoconf-Civic";
|
|
case DH6OPT_REMOTE_ID:
|
|
return "Remote-ID";
|
|
case DH6OPT_SUBSCRIBER_ID:
|
|
return "Subscriber-ID";
|
|
case DH6OPT_CLIENT_FQDN:
|
|
return "Client-FQDN";
|
|
case DH6OPT_PANA_AGENT:
|
|
return "PANA-agent";
|
|
case DH6OPT_NEW_POSIX_TIMEZONE:
|
|
return "POSIX-timezone";
|
|
case DH6OPT_NEW_TZDB_TIMEZONE:
|
|
return "POSIX-tz-database";
|
|
case DH6OPT_ERO:
|
|
return "Echo-request-option";
|
|
case DH6OPT_LQ_QUERY:
|
|
return "Lease-query";
|
|
case DH6OPT_CLIENT_DATA:
|
|
return "LQ-client-data";
|
|
case DH6OPT_CLT_TIME:
|
|
return "Clt-time";
|
|
case DH6OPT_LQ_RELAY_DATA:
|
|
return "LQ-relay-data";
|
|
case DH6OPT_LQ_CLIENT_LINK:
|
|
return "LQ-client-link";
|
|
case DH6OPT_AFTR_NAME:
|
|
return "AFTR-Name";
|
|
default:
|
|
snprintf(genstr, sizeof(genstr), "opt_%d", type);
|
|
return(genstr);
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
dhcp6stcode(int code)
|
|
{
|
|
static char genstr[sizeof("code255") + 1]; /* XXX thread unsafe */
|
|
|
|
if (code > 255)
|
|
return "INVALID code";
|
|
|
|
switch(code) {
|
|
case DH6OPT_STCODE_SUCCESS:
|
|
return "success";
|
|
case DH6OPT_STCODE_UNSPECFAIL:
|
|
return "unspec failure";
|
|
case DH6OPT_STCODE_NOADDRAVAIL:
|
|
return "no addresses";
|
|
case DH6OPT_STCODE_NOBINDING:
|
|
return "no binding";
|
|
case DH6OPT_STCODE_NOTONLINK:
|
|
return "not on-link";
|
|
case DH6OPT_STCODE_USEMULTICAST:
|
|
return "use multicast";
|
|
case DH6OPT_STCODE_NOPREFIXAVAIL:
|
|
return "no prefixes";
|
|
case DH6OPT_STCODE_UNKNOWNQUERYTYPE:
|
|
return "unknown query type";
|
|
case DH6OPT_STCODE_MALFORMEDQUERY:
|
|
return "malformed query";
|
|
case DH6OPT_STCODE_NOTCONFIGURED:
|
|
return "not configured";
|
|
case DH6OPT_STCODE_NOTALLOWED:
|
|
return "not allowed";
|
|
default:
|
|
snprintf(genstr, sizeof(genstr), "code%d", code);
|
|
return(genstr);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dhcp6opt_print(const u_char *cp, const u_char *ep)
|
|
{
|
|
struct dhcp6opt *dh6o;
|
|
u_char *tp;
|
|
size_t i;
|
|
u_int16_t opttype;
|
|
size_t optlen;
|
|
u_int8_t auth_proto;
|
|
u_int authinfolen, authrealmlen;
|
|
|
|
if (cp == ep)
|
|
return;
|
|
while (cp < ep) {
|
|
if (ep < cp + sizeof(*dh6o))
|
|
goto trunc;
|
|
dh6o = (struct dhcp6opt *)cp;
|
|
TCHECK(*dh6o);
|
|
optlen = EXTRACT_16BITS(&dh6o->dh6opt_len);
|
|
if (ep < cp + sizeof(*dh6o) + optlen)
|
|
goto trunc;
|
|
opttype = EXTRACT_16BITS(&dh6o->dh6opt_type);
|
|
printf(" (%s", dhcp6opt_name(opttype));
|
|
switch (opttype) {
|
|
case DH6OPT_CLIENTID:
|
|
case DH6OPT_SERVERID:
|
|
if (optlen < 2) {
|
|
/*(*/
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
switch (EXTRACT_16BITS(tp)) {
|
|
case 1:
|
|
if (optlen >= 2 + 6) {
|
|
printf(" hwaddr/time type %u time %u ",
|
|
EXTRACT_16BITS(&tp[2]),
|
|
EXTRACT_32BITS(&tp[4]));
|
|
for (i = 8; i < optlen; i++)
|
|
printf("%02x", tp[i]);
|
|
/*(*/
|
|
printf(")");
|
|
} else {
|
|
/*(*/
|
|
printf(" ?)");
|
|
}
|
|
break;
|
|
case 2:
|
|
if (optlen >= 2 + 8) {
|
|
printf(" vid ");
|
|
for (i = 2; i < 2 + 8; i++)
|
|
printf("%02x", tp[i]);
|
|
/*(*/
|
|
printf(")");
|
|
} else {
|
|
/*(*/
|
|
printf(" ?)");
|
|
}
|
|
break;
|
|
case 3:
|
|
if (optlen >= 2 + 2) {
|
|
printf(" hwaddr type %u ",
|
|
EXTRACT_16BITS(&tp[2]));
|
|
for (i = 4; i < optlen; i++)
|
|
printf("%02x", tp[i]);
|
|
/*(*/
|
|
printf(")");
|
|
} else {
|
|
/*(*/
|
|
printf(" ?)");
|
|
}
|
|
break;
|
|
default:
|
|
printf(" type %d)", EXTRACT_16BITS(tp));
|
|
break;
|
|
}
|
|
break;
|
|
case DH6OPT_IA_ADDR:
|
|
if (optlen < 24) {
|
|
/*(*/
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %s", ip6addr_string(&tp[0]));
|
|
printf(" pltime:%u vltime:%u",
|
|
EXTRACT_32BITS(&tp[16]),
|
|
EXTRACT_32BITS(&tp[20]));
|
|
if (optlen > 24) {
|
|
/* there are sub-options */
|
|
dhcp6opt_print(tp + 24, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_ORO:
|
|
case DH6OPT_ERO:
|
|
if (optlen % 2) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
for (i = 0; i < optlen; i += 2) {
|
|
printf(" %s",
|
|
dhcp6opt_name(EXTRACT_16BITS(&tp[i])));
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_PREFERENCE:
|
|
if (optlen != 1) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %d)", *tp);
|
|
break;
|
|
case DH6OPT_ELAPSED_TIME:
|
|
if (optlen != 2) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %d)", EXTRACT_16BITS(tp));
|
|
break;
|
|
case DH6OPT_RELAY_MSG:
|
|
printf(" (");
|
|
tp = (u_char *)(dh6o + 1);
|
|
dhcp6_print(tp, optlen);
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_AUTH:
|
|
if (optlen < 11) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
auth_proto = *tp;
|
|
switch (auth_proto) {
|
|
case DH6OPT_AUTHPROTO_DELAYED:
|
|
printf(" proto: delayed");
|
|
break;
|
|
case DH6OPT_AUTHPROTO_RECONFIG:
|
|
printf(" proto: reconfigure");
|
|
break;
|
|
default:
|
|
printf(" proto: %d", auth_proto);
|
|
break;
|
|
}
|
|
tp++;
|
|
switch (*tp) {
|
|
case DH6OPT_AUTHALG_HMACMD5:
|
|
/* XXX: may depend on the protocol */
|
|
printf(", alg: HMAC-MD5");
|
|
break;
|
|
default:
|
|
printf(", alg: %d", *tp);
|
|
break;
|
|
}
|
|
tp++;
|
|
switch (*tp) {
|
|
case DH6OPT_AUTHRDM_MONOCOUNTER:
|
|
printf(", RDM: mono");
|
|
break;
|
|
default:
|
|
printf(", RDM: %d", *tp);
|
|
break;
|
|
}
|
|
tp++;
|
|
printf(", RD:");
|
|
for (i = 0; i < 4; i++, tp += 2)
|
|
printf(" %04x", EXTRACT_16BITS(tp));
|
|
|
|
/* protocol dependent part */
|
|
authinfolen = optlen - 11;
|
|
switch (auth_proto) {
|
|
case DH6OPT_AUTHPROTO_DELAYED:
|
|
if (authinfolen == 0)
|
|
break;
|
|
if (authinfolen < 20) {
|
|
printf(" ??");
|
|
break;
|
|
}
|
|
authrealmlen = authinfolen - 20;
|
|
if (authrealmlen > 0) {
|
|
printf(", realm: ");
|
|
}
|
|
for (i = 0; i < authrealmlen; i++, tp++)
|
|
printf("%02x", *tp);
|
|
printf(", key ID: %08x", EXTRACT_32BITS(tp));
|
|
tp += 4;
|
|
printf(", HMAC-MD5:");
|
|
for (i = 0; i < 4; i++, tp+= 4)
|
|
printf(" %08x", EXTRACT_32BITS(tp));
|
|
break;
|
|
case DH6OPT_AUTHPROTO_RECONFIG:
|
|
if (authinfolen != 17) {
|
|
printf(" ??");
|
|
break;
|
|
}
|
|
switch (*tp++) {
|
|
case DH6OPT_AUTHRECONFIG_KEY:
|
|
printf(" reconfig-key");
|
|
break;
|
|
case DH6OPT_AUTHRECONFIG_HMACMD5:
|
|
printf(" type: HMAC-MD5");
|
|
break;
|
|
default:
|
|
printf(" type: ??");
|
|
break;
|
|
}
|
|
printf(" value:");
|
|
for (i = 0; i < 4; i++, tp+= 4)
|
|
printf(" %08x", EXTRACT_32BITS(tp));
|
|
break;
|
|
default:
|
|
printf(" ??");
|
|
break;
|
|
}
|
|
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_RAPID_COMMIT: /* nothing todo */
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_INTERFACE_ID:
|
|
case DH6OPT_SUBSCRIBER_ID:
|
|
/*
|
|
* Since we cannot predict the encoding, print hex dump
|
|
* at most 10 characters.
|
|
*/
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" ");
|
|
for (i = 0; i < optlen && i < 10; i++)
|
|
printf("%02x", tp[i]);
|
|
printf("...)");
|
|
break;
|
|
case DH6OPT_RECONF_MSG:
|
|
tp = (u_char *)(dh6o + 1);
|
|
switch (*tp) {
|
|
case DH6_RENEW:
|
|
printf(" for renew)");
|
|
break;
|
|
case DH6_INFORM_REQ:
|
|
printf(" for inf-req)");
|
|
break;
|
|
default:
|
|
printf(" for ?\?\?(%02x))", *tp);
|
|
break;
|
|
}
|
|
break;
|
|
case DH6OPT_RECONF_ACCEPT: /* nothing todo */
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_SIP_SERVER_A:
|
|
case DH6OPT_DNS:
|
|
case DH6OPT_NTP_SERVERS:
|
|
case DH6OPT_NIS_SERVERS:
|
|
case DH6OPT_NISP_SERVERS:
|
|
case DH6OPT_BCMCS_SERVER_A:
|
|
case DH6OPT_PANA_AGENT:
|
|
case DH6OPT_LQ_CLIENT_LINK:
|
|
if (optlen % 16) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
for (i = 0; i < optlen; i += 16)
|
|
printf(" %s", ip6addr_string(&tp[i]));
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_STATUS_CODE:
|
|
if (optlen < 2) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %s)", dhcp6stcode(EXTRACT_16BITS(&tp[0])));
|
|
break;
|
|
case DH6OPT_IA_NA:
|
|
case DH6OPT_IA_PD:
|
|
if (optlen < 12) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" IAID:%u T1:%u T2:%u",
|
|
EXTRACT_32BITS(&tp[0]),
|
|
EXTRACT_32BITS(&tp[4]),
|
|
EXTRACT_32BITS(&tp[8]));
|
|
if (optlen > 12) {
|
|
/* there are sub-options */
|
|
dhcp6opt_print(tp + 12, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_IA_TA:
|
|
if (optlen < 4) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" IAID:%u", EXTRACT_32BITS(tp));
|
|
if (optlen > 4) {
|
|
/* there are sub-options */
|
|
dhcp6opt_print(tp + 4, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_IA_PD_PREFIX:
|
|
if (optlen < 25) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %s/%d", ip6addr_string(&tp[9]), tp[8]);
|
|
printf(" pltime:%u vltime:%u",
|
|
EXTRACT_32BITS(&tp[0]),
|
|
EXTRACT_32BITS(&tp[4]));
|
|
if (optlen > 25) {
|
|
/* there are sub-options */
|
|
dhcp6opt_print(tp + 25, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_LIFETIME:
|
|
case DH6OPT_CLT_TIME:
|
|
if (optlen != 4) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %d)", EXTRACT_32BITS(tp));
|
|
break;
|
|
case DH6OPT_REMOTE_ID:
|
|
if (optlen < 4) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %d ", EXTRACT_32BITS(tp));
|
|
/*
|
|
* Print hex dump first 10 characters.
|
|
*/
|
|
for (i = 4; i < optlen && i < 14; i++)
|
|
printf("%02x", tp[i]);
|
|
printf("...)");
|
|
break;
|
|
case DH6OPT_LQ_QUERY:
|
|
if (optlen < 17) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
switch (*tp) {
|
|
case 1:
|
|
printf(" by-address");
|
|
break;
|
|
case 2:
|
|
printf(" by-clientID");
|
|
break;
|
|
default:
|
|
printf(" type_%d", (int)*tp);
|
|
break;
|
|
}
|
|
printf(" %s", ip6addr_string(&tp[1]));
|
|
if (optlen > 17) {
|
|
/* there are query-options */
|
|
dhcp6opt_print(tp + 17, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_CLIENT_DATA:
|
|
tp = (u_char *)(dh6o + 1);
|
|
if (optlen > 0) {
|
|
/* there are encapsulated options */
|
|
dhcp6opt_print(tp, tp + optlen);
|
|
}
|
|
printf(")");
|
|
break;
|
|
case DH6OPT_LQ_RELAY_DATA:
|
|
if (optlen < 16) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
printf(" %s ", ip6addr_string(&tp[0]));
|
|
/*
|
|
* Print hex dump first 10 characters.
|
|
*/
|
|
for (i = 16; i < optlen && i < 26; i++)
|
|
printf("%02x", tp[i]);
|
|
printf("...)");
|
|
break;
|
|
case DH6OPT_AFTR_NAME:
|
|
if (optlen < 3) {
|
|
printf(" ?)");
|
|
break;
|
|
}
|
|
tp = (u_char *)(dh6o + 1);
|
|
int remain_len = optlen;
|
|
printf(" ");
|
|
/* Encoding is described in section 3.1 of RFC 1035 */
|
|
int label_len; /* Label length */
|
|
while (remain_len && *tp) {
|
|
label_len = *tp++;
|
|
if (label_len < remain_len - 1) {
|
|
printf("%.*s", label_len, tp);
|
|
tp += label_len;
|
|
remain_len -= (label_len + 1);
|
|
if(*tp) printf(".");
|
|
} else {
|
|
printf(" ?");
|
|
break;
|
|
}
|
|
}
|
|
printf(")");
|
|
break;
|
|
default:
|
|
printf(")");
|
|
break;
|
|
}
|
|
|
|
cp += sizeof(*dh6o) + optlen;
|
|
}
|
|
return;
|
|
|
|
trunc:
|
|
printf("[|dhcp6ext]");
|
|
}
|
|
|
|
/*
|
|
* Print dhcp6 packets
|
|
*/
|
|
void
|
|
dhcp6_print(const u_char *cp, u_int length)
|
|
{
|
|
struct dhcp6 *dh6;
|
|
struct dhcp6_relay *dh6relay;
|
|
const u_char *ep;
|
|
u_char *extp;
|
|
const char *name;
|
|
|
|
printf("dhcp6");
|
|
|
|
ep = (u_char *)snapend;
|
|
if (cp + length < ep)
|
|
ep = cp + length;
|
|
|
|
dh6 = (struct dhcp6 *)cp;
|
|
dh6relay = (struct dhcp6_relay *)cp;
|
|
TCHECK(dh6->dh6_xid);
|
|
switch (dh6->dh6_msgtype) {
|
|
case DH6_SOLICIT:
|
|
name = "solicit";
|
|
break;
|
|
case DH6_ADVERTISE:
|
|
name = "advertise";
|
|
break;
|
|
case DH6_REQUEST:
|
|
name = "request";
|
|
break;
|
|
case DH6_CONFIRM:
|
|
name = "confirm";
|
|
break;
|
|
case DH6_RENEW:
|
|
name = "renew";
|
|
break;
|
|
case DH6_REBIND:
|
|
name = "rebind";
|
|
break;
|
|
case DH6_REPLY:
|
|
name = "reply";
|
|
break;
|
|
case DH6_RELEASE:
|
|
name = "release";
|
|
break;
|
|
case DH6_DECLINE:
|
|
name = "decline";
|
|
break;
|
|
case DH6_RECONFIGURE:
|
|
name = "reconfigure";
|
|
break;
|
|
case DH6_INFORM_REQ:
|
|
name= "inf-req";
|
|
break;
|
|
case DH6_RELAY_FORW:
|
|
name= "relay-fwd";
|
|
break;
|
|
case DH6_RELAY_REPLY:
|
|
name= "relay-reply";
|
|
break;
|
|
case DH6_LEASEQUERY:
|
|
name= "leasequery";
|
|
break;
|
|
case DH6_LQ_REPLY:
|
|
name= "leasequery-reply";
|
|
break;
|
|
default:
|
|
name = NULL;
|
|
break;
|
|
}
|
|
|
|
if (!vflag) {
|
|
if (name)
|
|
printf(" %s", name);
|
|
else if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
|
|
dh6->dh6_msgtype != DH6_RELAY_REPLY) {
|
|
printf(" msgtype-%u", dh6->dh6_msgtype);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* XXX relay agent messages have to be handled differently */
|
|
|
|
if (name)
|
|
printf(" %s (", name); /*)*/
|
|
else
|
|
printf(" msgtype-%u (", dh6->dh6_msgtype); /*)*/
|
|
if (dh6->dh6_msgtype != DH6_RELAY_FORW &&
|
|
dh6->dh6_msgtype != DH6_RELAY_REPLY) {
|
|
printf("xid=%x", EXTRACT_32BITS(&dh6->dh6_xid) & DH6_XIDMASK);
|
|
extp = (u_char *)(dh6 + 1);
|
|
dhcp6opt_print(extp, ep);
|
|
} else { /* relay messages */
|
|
struct in6_addr addr6;
|
|
|
|
TCHECK(dh6relay->dh6relay_peeraddr);
|
|
|
|
memcpy(&addr6, dh6relay->dh6relay_linkaddr, sizeof (addr6));
|
|
printf("linkaddr=%s", ip6addr_string(&addr6));
|
|
|
|
memcpy(&addr6, dh6relay->dh6relay_peeraddr, sizeof (addr6));
|
|
printf(" peeraddr=%s", ip6addr_string(&addr6));
|
|
|
|
dhcp6opt_print((u_char *)(dh6relay + 1), ep);
|
|
}
|
|
/*(*/
|
|
printf(")");
|
|
return;
|
|
|
|
trunc:
|
|
printf("[|dhcp6]");
|
|
}
|