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