| /* |
| * 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, |
| * RFC3633, |
| * RFC3646, |
| * RFC3898, |
| * RFC4075, |
| * RFC4242, |
| * RFC4280, |
| */ |
| |
| #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 |
| |
| 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"; |
| 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; |
| 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 + 24 + 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 + 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]"); |
| } |