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wireshark/epan/dissectors/packet-ipv6.c

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/* packet-ipv6.c
* Routines for IPv6 packet disassembly
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SHIM6 support added by Matthijs Mekking <matthijs@NLnetLabs.nl>
*
* MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@siemens.hr>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <math.h>
#include <epan/packet.h>
#include <epan/capture_dissectors.h>
#include <epan/expert.h>
#include <epan/ip_opts.h>
#include <epan/addr_resolv.h>
#include <epan/prefs.h>
#include <epan/conversation_table.h>
#include <epan/dissector_filters.h>
#include <epan/reassemble.h>
#include <epan/ipproto.h>
#include <epan/etypes.h>
#include <epan/ppptypes.h>
#include <epan/aftypes.h>
#include <epan/nlpid.h>
#include <epan/arcnet_pids.h>
#include <epan/in_cksum.h>
#include <epan/decode_as.h>
#include <epan/proto_data.h>
#include <wiretap/erf.h>
#include <wsutil/str_util.h>
#include "packet-ipv6.h"
#include "packet-ip.h"
#include "packet-juniper.h"
#include "packet-sflow.h"
#ifdef HAVE_GEOIP_V6
#include <GeoIP.h>
#include <epan/geoip_db.h>
#endif /* HAVE_GEOIP_V6 */
void proto_register_ipv6(void);
void proto_reg_handoff_ipv6(void);
#define IPv6_HDR_SIZE 40
#define IPv6_ADDR_SIZE 16
#define IPv6_HDR_TCLS(ipv6) ((guint8)(g_ntohl((ipv6)->ip6_flow) >> 20))
/* Option types and related macros */
#define IP6OPT_PAD1 0x00 /* 00 0 00000 = 0 */
#define IP6OPT_PADN 0x01 /* 00 0 00001 = 1 */
#define IP6OPT_TEL 0x04 /* 00 0 00100 = 4 */
#define IP6OPT_RTALERT 0x05 /* 00 0 00101 = 5 */
#define IP6OPT_CALIPSO 0x07 /* 00 0 00111 = 7 */
#define IP6OPT_SMF_DPD 0x08 /* 00 0 01000 = 8 */
#define IP6OPT_EXP_1E 0x1E /* 00 0 11110 = 30 */
#define IP6OPT_QUICKSTART 0x26 /* 00 1 00110 = 38 */
#define IP6OPT_EXP_3E 0x3E /* 00 1 11110 = 62 */
#define IP6OPT_EXP_5E 0x5E /* 01 0 11110 = 94 */
#define IP6OPT_RPL 0x63 /* 01 1 00011 = 99 */
#define IP6OPT_MPL 0x6D /* 01 1 01101 = 109 */
#define IP6OPT_EXP_7E 0x7E /* 01 1 11110 = 126 */
#define IP6OPT_ENDI 0x8A /* 10 0 01010 = 138 */
#define IP6OPT_ILNP_NONCE 0x8B /* 10 0 01011 = 139 */
#define IP6OPT_LIO 0x8C /* 10 0 01100 = 140 */
#define IP6OPT_EXP_9E 0x9E /* 10 0 11110 = 158 */
#define IP6OPT_EXP_BE 0xBE /* 10 1 11110 = 190 */
#define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */
#define IP6OPT_HOME_ADDRESS 0xC9 /* 11 0 01001 = 201 */
#define IP6OPT_EXP_DE 0xDE /* 11 0 11110 = 222 */
#define IP6OPT_IP_DFF 0xEE /* 11 1 01110 = 238 */
#define IP6OPT_EXP_FE 0xFE /* 11 1 11110 = 254 */
#define IP6OPT_RTALERT_MLD 0 /* Datagram contains MLD msg */
#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains RSVP msg */
#define IP6OPT_RTALERT_ACTNET 2 /* Datagram contains ACTNET msg */
/* RPL Routing header */
#define IP6RRPL_BITMASK_CMPRI 0xF0000000
#define IP6RRPL_BITMASK_CMPRE 0x0F000000
#define IP6RRPL_BITMASK_PAD 0x00F00000
#define IP6RRPL_BITMASK_RESERVED 0x000FFFFF
/* SHIM6 control message types */
#define SHIM6_TYPE_I1 0x01 /* 0 000 0001 */
#define SHIM6_TYPE_R1 0x02 /* 0 000 0010 */
#define SHIM6_TYPE_I2 0x03 /* 0 000 0011 */
#define SHIM6_TYPE_R2 0x04 /* 0 000 0100 */
#define SHIM6_TYPE_R1BIS 0x05 /* 0 000 0101 */
#define SHIM6_TYPE_I2BIS 0x06 /* 0 000 0110 */
#define SHIM6_TYPE_UPD_REQ 0x40 /* 0 100 0000 = 64 */
#define SHIM6_TYPE_UPD_ACK 0x41 /* 0 100 0001 = 65 */
#define SHIM6_TYPE_KEEPALIVE 0x42 /* 0 100 0010 = 66 */
#define SHIM6_TYPE_PROBE 0x43 /* 0 100 0011 = 67 */
/* SHIM6 Options */
#define SHIM6_OPT_RESPVAL 0x01 /* 0 000 0001 */
#define SHIM6_OPT_LOCLIST 0x02 /* 0 000 0010 */
#define SHIM6_OPT_LOCPREF 0x03 /* 0 000 0011 */
#define SHIM6_OPT_CGAPDM 0x04 /* 0 000 0100 */
#define SHIM6_OPT_CGASIG 0x05 /* 0 000 0101 */
#define SHIM6_OPT_ULIDPAIR 0x06 /* 0 000 0110 */
#define SHIM6_OPT_FII 0x07 /* 0 000 0111 */
/* SHIM6 Bitmasks */
#define SHIM6_BITMASK_P 0x80 /* 1 000 0000 */
#define SHIM6_BITMASK_TYPE 0x7F /* 0 111 1111 */
#define SHIM6_BITMASK_PROTOCOL 0x01 /* 0 000 0001 */
#define SHIM6_BITMASK_SPECIFIC 0xFE /* 1 111 1110 */
#define SHIM6_BITMASK_R 0x80 /* 1 000 0000 */
#define SHIM6_BITMASK_CT 0x7F /* 0 111 1111 */
#define SHIM6_BITMASK_OPT_TYPE 0xFFFE /* 1 111 1111 1 111 1110 */
#define SHIM6_BITMASK_CRITICAL 0x01 /* 0 000 0001 */
#define SHIM6_BITMASK_PRECVD 0xF0 /* 1 111 0000 */
#define SHIM6_BITMASK_PSENT 0x0F /* 0 000 1111 */
#define SHIM6_BITMASK_STA 0xC0 /* 1 100 0000 */
/* SHIM6 Verification Methods */
#define SHIM6_VERIF_HBA 0x01 /* 0 000 0001 */
#define SHIM6_VERIF_CGA 0x02 /* 0 000 0010 */
/* SHIM6 Flags */
#define SHIM6_FLAG_BROKEN 0x01 /* 0 000 0001 */
#define SHIM6_FLAG_TEMPORARY 0x02 /* 0 000 0010 */
/* SHIM6 REAP States */
#define SHIM6_REAP_OPERATIONAL 0x00 /* 0 000 0000 */
#define SHIM6_REAP_EXPLORING 0x01 /* 0 000 0001 */
#define SHIM6_REAP_INBOUNDOK 0x02 /* 0 000 0010 */
/* Protocol specific data indices */
#define IPV6_PROTO_NXT_HDR 0
#define IPV6_PROTO_VALUE 1
#define IPV6_PROTO_META 2
/* Metadata collected on IPv6 header and extensions */
typedef struct {
gint exthdr_count;
gboolean jumbogram;
guint32 jumbo_length;
} ipv6_meta_t;
static int ipv6_tap = -1;
static int proto_ipv6 = -1;
static int proto_ipv6_hopopts = -1;
static int proto_ipv6_routing = -1;
static int proto_ipv6_fraghdr = -1;
static int proto_ipv6_shim6 = -1;
static int proto_ipv6_dstopts = -1;
static int hf_ipv6_version = -1;
static int hf_ip_version = -1;
static int hf_ipv6_tclass = -1;
static int hf_ipv6_tclass_dscp = -1;
static int hf_ipv6_tclass_ecn = -1;
static int hf_ipv6_flow = -1;
static int hf_ipv6_plen = -1;
static int hf_ipv6_nxt = -1;
static int hf_ipv6_hlim = -1;
static int hf_ipv6_src = -1;
static int hf_ipv6_src_host = -1;
static int hf_ipv6_src_sa_mac = -1;
static int hf_ipv6_src_isatap_ipv4 = -1;
static int hf_ipv6_src_6to4_gateway_ipv4 = -1;
static int hf_ipv6_src_6to4_sla_id = -1;
static int hf_ipv6_src_teredo_server_ipv4 = -1;
static int hf_ipv6_src_teredo_port = -1;
static int hf_ipv6_src_teredo_client_ipv4 = -1;
static int hf_ipv6_dst = -1;
static int hf_ipv6_dst_host = -1;
static int hf_ipv6_dst_sa_mac = -1;
static int hf_ipv6_dst_isatap_ipv4 = -1;
static int hf_ipv6_dst_6to4_gateway_ipv4 = -1;
static int hf_ipv6_dst_6to4_sla_id = -1;
static int hf_ipv6_dst_teredo_server_ipv4 = -1;
static int hf_ipv6_dst_teredo_port = -1;
static int hf_ipv6_dst_teredo_client_ipv4 = -1;
static int hf_ipv6_addr = -1;
static int hf_ipv6_host = -1;
static int hf_ipv6_sa_mac = -1;
static int hf_ipv6_isatap_ipv4 = -1;
static int hf_ipv6_6to4_gateway_ipv4 = -1;
static int hf_ipv6_6to4_sla_id = -1;
static int hf_ipv6_teredo_server_ipv4 = -1;
static int hf_ipv6_teredo_port = -1;
static int hf_ipv6_teredo_client_ipv4 = -1;
static int hf_ipv6_opt = -1;
static int hf_ipv6_opt_type = -1;
static int hf_ipv6_opt_length = -1;
static int hf_ipv6_opt_pad1 = -1;
static int hf_ipv6_opt_padn = -1;
static int hf_ipv6_opt_tel = -1;
static int hf_ipv6_opt_rtalert = -1;
static int hf_ipv6_opt_jumbo = -1;
static int hf_ipv6_opt_calipso_doi = -1;
static int hf_ipv6_opt_calipso_cmpt_length = -1;
static int hf_ipv6_opt_calipso_sens_level = -1;
static int hf_ipv6_opt_calipso_checksum = -1;
static int hf_ipv6_opt_calipso_cmpt_bitmap = -1;
static int hf_ipv6_opt_qs_func = -1;
static int hf_ipv6_opt_qs_rate = -1;
static int hf_ipv6_opt_qs_ttl = -1;
static int hf_ipv6_opt_qs_ttl_diff = -1;
static int hf_ipv6_opt_qs_unused = -1;
static int hf_ipv6_opt_qs_nonce = -1;
static int hf_ipv6_opt_qs_reserved = -1;
static int hf_ipv6_opt_mipv6_home_address = -1;
static int hf_ipv6_opt_rpl_flag = -1;
static int hf_ipv6_opt_rpl_flag_o = -1;
static int hf_ipv6_opt_rpl_flag_r = -1;
static int hf_ipv6_opt_rpl_flag_f = -1;
static int hf_ipv6_opt_rpl_flag_rsv = -1;
static int hf_ipv6_opt_rpl_instance_id = -1;
static int hf_ipv6_opt_rpl_senderrank = -1;
static int hf_ipv6_opt_mpl_flag = -1;
static int hf_ipv6_opt_mpl_flag_s = -1;
static int hf_ipv6_opt_mpl_flag_m = -1;
static int hf_ipv6_opt_mpl_flag_v = -1;
static int hf_ipv6_opt_mpl_flag_rsv = -1;
static int hf_ipv6_opt_mpl_sequence = -1;
static int hf_ipv6_opt_mpl_seed_id = -1;
static int hf_ipv6_opt_experimental = -1;
static int hf_ipv6_opt_unknown_data = -1;
static int hf_ipv6_opt_unknown = -1;
static int hf_ipv6_dstopts_nxt = -1;
static int hf_ipv6_dstopts_length = -1;
static int hf_ipv6_hopopts_nxt = -1;
static int hf_ipv6_hopopts_length = -1;
static int hf_ipv6_unknown_hdr = -1;
static int hf_ipv6_unknown_hdr_nxt = -1;
static int hf_ipv6_unknown_hdr_length = -1;
static int hf_ipv6_routing_nxt = -1;
static int hf_ipv6_routing_length = -1;
static int hf_ipv6_routing_type = -1;
static int hf_ipv6_routing_segleft = -1;
static int hf_ipv6_fraghdr_nxt = -1;
static int hf_ipv6_fraghdr_reserved_octet = -1;
static int hf_ipv6_fraghdr_offset = -1;
static int hf_ipv6_fraghdr_reserved_bits = -1;
static int hf_ipv6_fraghdr_more = -1;
static int hf_ipv6_fraghdr_ident = -1;
static int hf_ipv6_fragment = -1;
static int hf_ipv6_fragment_overlap = -1;
static int hf_ipv6_fragment_overlap_conflict = -1;
static int hf_ipv6_fragment_multiple_tails = -1;
static int hf_ipv6_fragment_too_long_fragment = -1;
static int hf_ipv6_fragment_error = -1;
static int hf_ipv6_fragment_count = -1;
static int hf_ipv6_fragments = -1;
static int hf_ipv6_reassembled_in = -1;
static int hf_ipv6_reassembled_length = -1;
static int hf_ipv6_reassembled_data = -1;
static int hf_ipv6_padding = -1;
static int hf_ipv6_routing_src_reserved = -1;
static int hf_ipv6_routing_src_addr = -1;
static int hf_ipv6_routing_mipv6_reserved = -1;
static int hf_ipv6_routing_mipv6_home_address = -1;
static int hf_ipv6_routing_rpl_cmprI = -1;
static int hf_ipv6_routing_rpl_cmprE = -1;
static int hf_ipv6_routing_rpl_pad = -1;
static int hf_ipv6_routing_rpl_reserved = -1;
static int hf_ipv6_routing_rpl_addr_count = -1;
static int hf_ipv6_routing_rpl_addr = -1;
static int hf_ipv6_routing_rpl_fulladdr = -1;
static int hf_ipv6_shim6_nxt = -1;
static int hf_ipv6_shim6_len = -1;
static int hf_ipv6_shim6_p = -1;
/* context tag is 49 bits, cannot be used for filter yet */
static int hf_ipv6_shim6_ct = -1;
static int hf_ipv6_shim6_type = -1;
static int hf_ipv6_shim6_proto = -1;
static int hf_ipv6_shim6_checksum = -1;
static int hf_ipv6_shim6_checksum_bad = -1;
static int hf_ipv6_shim6_checksum_good = -1;
static int hf_ipv6_shim6_inonce = -1; /* also for request nonce */
static int hf_ipv6_shim6_rnonce = -1;
static int hf_ipv6_shim6_reserved = -1;
static int hf_ipv6_shim6_reserved2 = -1;
static int hf_ipv6_shim6_precvd = -1;
static int hf_ipv6_shim6_psent = -1;
static int hf_ipv6_shim6_psrc = -1;
static int hf_ipv6_shim6_pdst = -1;
static int hf_ipv6_shim6_pnonce = -1;
static int hf_ipv6_shim6_pdata = -1;
static int hf_ipv6_shim6_sulid = -1;
static int hf_ipv6_shim6_rulid = -1;
static int hf_ipv6_shim6_reap = -1;
static int hf_ipv6_shim6_opt_type = -1;
static int hf_ipv6_shim6_opt_len = -1;
static int hf_ipv6_shim6_opt_total_len = -1;
static int hf_ipv6_shim6_opt_loc_verif_methods = -1;
static int hf_ipv6_shim6_opt_critical = -1;
static int hf_ipv6_shim6_opt_loclist = -1;
static int hf_ipv6_shim6_locator = -1;
static int hf_ipv6_shim6_loc_flag = -1;
static int hf_ipv6_shim6_loc_prio = -1;
static int hf_ipv6_shim6_loc_weight = -1;
static int hf_ipv6_shim6_opt_locnum = -1;
static int hf_ipv6_shim6_opt_elemlen = -1;
static int hf_ipv6_shim6_opt_fii = -1;
static int hf_ipv6_shim6_validator = -1;
static int hf_ipv6_shim6_cga_parameter_data_structure = -1;
static int hf_ipv6_shim6_cga_signature = -1;
#ifdef HAVE_GEOIP_V6
static int hf_geoip_country = -1;
static int hf_geoip_city = -1;
static int hf_geoip_org = -1;
static int hf_geoip_isp = -1;
static int hf_geoip_asnum = -1;
static int hf_geoip_lat = -1;
static int hf_geoip_lon = -1;
static int hf_geoip_src_country = -1;
static int hf_geoip_src_city = -1;
static int hf_geoip_src_org = -1;
static int hf_geoip_src_isp = -1;
static int hf_geoip_src_asnum = -1;
static int hf_geoip_src_lat = -1;
static int hf_geoip_src_lon = -1;
static int hf_geoip_dst_country = -1;
static int hf_geoip_dst_city = -1;
static int hf_geoip_dst_org = -1;
static int hf_geoip_dst_isp = -1;
static int hf_geoip_dst_asnum = -1;
static int hf_geoip_dst_lat = -1;
static int hf_geoip_dst_lon = -1;
#endif /* HAVE_GEOIP_V6 */
static gint ett_ipv6 = -1;
static gint ett_ipv6_opt = -1;
static gint ett_ipv6_opt_rpl = -1;
static gint ett_ipv6_opt_mpl = -1;
static gint ett_ipv6_fraghdr = -1;
static gint ett_ipv6_routing = -1;
static gint ett_ipv6_shim6 = -1;
static gint ett_ipv6_shim6_option = -1;
static gint ett_ipv6_shim6_locators = -1;
static gint ett_ipv6_shim6_verif_methods = -1;
static gint ett_ipv6_shim6_loc_pref = -1;
static gint ett_ipv6_shim6_probes_sent = -1;
static gint ett_ipv6_shim6_probe_sent = -1;
static gint ett_ipv6_shim6_probes_rcvd = -1;
static gint ett_ipv6_shim6_probe_rcvd = -1;
static gint ett_ipv6_shim6_cksum = -1;
static gint ett_ipv6_fragments = -1;
static gint ett_ipv6_fragment = -1;
static gint ett_ipv6_traffic_class = -1;
#ifdef HAVE_GEOIP_V6
static gint ett_geoip_info = -1;
#endif /* HAVE_GEOIP_V6 */
static expert_field ei_ipv6_routing_invalid_length = EI_INIT;
static expert_field ei_ipv6_routing_invalid_segleft = EI_INIT;
static expert_field ei_ipv6_dst_addr_not_multicast = EI_INIT;
static expert_field ei_ipv6_src_route_list_mult_inst_same_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_src_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_dst_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_multicast_addr = EI_INIT;
static expert_field ei_ipv6_routing_rpl_cmpri_cmpre_pad = EI_INIT;
static expert_field ei_ipv6_routing_rpl_addr_count_ge0 = EI_INIT;
static expert_field ei_ipv6_routing_rpl_reserved = EI_INIT;
static expert_field ei_ipv6_opt_tel_invalid_len = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_invalid_len = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_missing = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_prohibited = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_truncated = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_fragment = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_not_hopbyhop = EI_INIT;
static expert_field ei_ipv6_opt_rtalert_invalid_len = EI_INIT;
static expert_field ei_ipv6_opt_unknown_data = EI_INIT;
static expert_field ei_ipv6_mipv6_home_address_invalid_len = EI_INIT;
static expert_field ei_ipv6_shim6_opt_elemlen_invalid = EI_INIT;
static expert_field ei_ipv6_shim6_checksum_bad = EI_INIT;
static expert_field ei_ipv6_hopopts_not_first = EI_INIT;
static expert_field ei_ipv6_bogus_ipv6_length = EI_INIT;
static expert_field ei_ipv6_bogus_payload_length = EI_INIT;
static expert_field ei_ipv6_bogus_ipv6_version = EI_INIT;
static expert_field ei_ipv6_invalid_header = EI_INIT;
static void ipv6_prompt(packet_info *pinfo, gchar* result)
{
g_snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "IP protocol %u as",
GPOINTER_TO_UINT(p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE)));
}
static gpointer ipv6_value(packet_info *pinfo)
{
return p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE);
}
static void ipv6_next_header_prompt(packet_info *pinfo, gchar* result)
{
g_snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "IP Next Header %u as",
GPOINTER_TO_UINT(p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR)));
}
static gpointer ipv6_next_header_value(packet_info *pinfo)
{
return p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR);
}
static const char* ipv6_conv_get_filter_type(conv_item_t* conv, conv_filter_type_e filter)
{
if ((filter == CONV_FT_SRC_ADDRESS) && (conv->src_address.type == AT_IPv6))
return "ipv6.src";
if ((filter == CONV_FT_DST_ADDRESS) && (conv->dst_address.type == AT_IPv6))
return "ipv6.dst";
if ((filter == CONV_FT_ANY_ADDRESS) && (conv->src_address.type == AT_IPv6))
return "ipv6.addr";
return CONV_FILTER_INVALID;
}
static ct_dissector_info_t ipv6_ct_dissector_info = {&ipv6_conv_get_filter_type};
static int
ipv6_conversation_packet(void *pct, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
{
conv_hash_t *hash = (conv_hash_t*) pct;
const struct ip6_hdr *ip6h = (const struct ip6_hdr *)vip;
address src;
address dst;
/* Addresses aren't implemented as 'address' type in struct ip6_hdr */
src.type = dst.type = AT_IPv6;
src.len = dst.len = sizeof(struct e_in6_addr);
src.data = &ip6h->ip6_src;
dst.data = &ip6h->ip6_dst;
add_conversation_table_data(hash, &src, &dst, 0, 0, 1, pinfo->fd->pkt_len, &pinfo->rel_ts, &pinfo->abs_ts, &ipv6_ct_dissector_info, PT_NONE);
return 1;
}
static const char* ipv6_host_get_filter_type(hostlist_talker_t* host, conv_filter_type_e filter)
{
if ((filter == CONV_FT_ANY_ADDRESS) && (host->myaddress.type == AT_IPv6))
return "ipv6.addr";
return CONV_FILTER_INVALID;
}
static hostlist_dissector_info_t ipv6_host_dissector_info = {&ipv6_host_get_filter_type};
static int
ipv6_hostlist_packet(void *pit, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
{
conv_hash_t *hash = (conv_hash_t*) pit;
const struct ip6_hdr *ip6h = (const struct ip6_hdr *)vip;
address src;
address dst;
/* Addresses aren't implemented as 'address' type in struct ip6_hdr */
set_address(&src, AT_IPv6, sizeof(struct e_in6_addr), &ip6h->ip6_src);
set_address(&dst, AT_IPv6, sizeof(struct e_in6_addr), &ip6h->ip6_dst);
add_hostlist_table_data(hash, &src, 0, TRUE, 1, pinfo->fd->pkt_len, &ipv6_host_dissector_info, PT_NONE);
add_hostlist_table_data(hash, &dst, 0, FALSE, 1, pinfo->fd->pkt_len, &ipv6_host_dissector_info, PT_NONE);
return 1;
}
static gboolean
ipv6_filter_valid(packet_info *pinfo)
{
return proto_is_frame_protocol(pinfo->layers, "ipv6");
}
static gchar*
ipv6_build_filter(packet_info *pinfo)
{
return g_strdup_printf("ipv6.addr eq %s and ipv6.addr eq %s",
address_to_str(pinfo->pool, &pinfo->net_src),
address_to_str(pinfo->pool, &pinfo->net_dst));
}
static const fragment_items ipv6_frag_items = {
&ett_ipv6_fragment,
&ett_ipv6_fragments,
&hf_ipv6_fragments,
&hf_ipv6_fragment,
&hf_ipv6_fragment_overlap,
&hf_ipv6_fragment_overlap_conflict,
&hf_ipv6_fragment_multiple_tails,
&hf_ipv6_fragment_too_long_fragment,
&hf_ipv6_fragment_error,
&hf_ipv6_fragment_count,
&hf_ipv6_reassembled_in,
&hf_ipv6_reassembled_length,
&hf_ipv6_reassembled_data,
"IPv6 fragments"
};
static dissector_handle_t data_handle;
static dissector_table_t ip_dissector_table;
static dissector_table_t ipv6_next_header_dissector_table;
/* Reassemble fragmented datagrams */
static gboolean ipv6_reassemble = TRUE;
/* Place IPv6 summary in proto tree */
static gboolean ipv6_summary_in_tree = TRUE;
#ifdef HAVE_GEOIP_V6
/* Look up addresses in GeoIP */
static gboolean ipv6_use_geoip = TRUE;
#endif /* HAVE_GEOIP_V6 */
/* Perform strict RFC adherence checking */
static gboolean g_ipv6_rpl_srh_strict_rfc_checking = FALSE;
/* Use heuristics to determine subdissector */
static gboolean try_heuristic_first = FALSE;
/* Display IPv6 extension headers under the root tree */
static gboolean ipv6_exthdr_under_root = FALSE;
/*
* defragmentation of IPv6
*/
static reassembly_table ipv6_reassembly_table;
/* http://www.iana.org/assignments/ipv6-parameters (last updated 2015-07-07) */
static const value_string ipv6_opt_vals[] = {
{ IP6OPT_PAD1, "Pad1" },
{ IP6OPT_PADN, "PadN" },
{ IP6OPT_TEL, "Tunnel Encapsulation Limit" },
{ IP6OPT_RTALERT, "Router Alert" },
{ IP6OPT_CALIPSO, "CALIPSO" },
{ IP6OPT_SMF_DPD, "SMF_DPD" },
{ IP6OPT_EXP_1E, "Experimental (0x1E)" },
{ IP6OPT_QUICKSTART, "Quick-Start" },
{ IP6OPT_EXP_3E, "Experimental (0x3E)" },
{ IP6OPT_EXP_5E, "Experimental (0x5E)" },
{ IP6OPT_RPL, "RPL Option" },
{ IP6OPT_MPL, "MPL Option" },
{ IP6OPT_EXP_7E, "Experimental (0x7E)" },
{ IP6OPT_ENDI, "Endpoint Identification" },
{ IP6OPT_ILNP_NONCE, "ILNP Nonce" },
{ IP6OPT_LIO, "Line-Identification Option" },
{ IP6OPT_EXP_9E, "Experimental (0x9E)" },
{ IP6OPT_EXP_BE, "Experimental (0xBE)" },
{ IP6OPT_JUMBO, "Jumbo Payload" },
{ IP6OPT_HOME_ADDRESS, "Home Address" },
{ IP6OPT_EXP_DE, "Experimental (0xDE)" },
{ IP6OPT_IP_DFF, "IP_DFF" },
{ IP6OPT_EXP_FE, "Experimental (0xFE)" },
{ 0, NULL }
};
value_string_ext ipv6_opt_vals_ext = VALUE_STRING_EXT_INIT(ipv6_opt_vals);
gboolean
capture_ipv6(const guchar *pd, int offset, int len, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header _U_)
{
guint8 nxt;
int advance;
if (!BYTES_ARE_IN_FRAME(offset, len, 4+4+16+16))
return FALSE;
capture_dissector_increment_count(cpinfo, proto_ipv6);
nxt = pd[offset+6]; /* get the "next header" value */
offset += 4+4+16+16; /* skip past the IPv6 header */
again:
switch (nxt) {
case IP_PROTO_HOPOPTS:
case IP_PROTO_ROUTING:
case IP_PROTO_DSTOPTS:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = (pd[offset+1] + 1) << 3;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_FRAGMENT:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = 8;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_AH:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = 8 + ((pd[offset+1] - 1) << 2);
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_SHIM6:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = (pd[offset+1] + 1) << 3;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
}
return try_capture_dissector("ipv6.nxt", nxt, pd, offset, len, cpinfo, pseudo_header);
}
/**
* Unicast Scope
* Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
*/
#if 0 /* XXX Currently unused */
static inline gboolean in6_is_addr_link_local(struct e_in6_addr *a) {
if ((a->bytes[0] == 0xfe) && ((a->bytes[1] & 0xc0) == 0x80)) {
return TRUE;
}
return FALSE;
}
static inline gboolean in6_is_addr_sitelocal(struct e_in6_addr *a) {
if ((a->bytes[0] == 0xfe) && ((a->bytes[1] & 0xc0) == 0xc0)) {
return TRUE;
}
return FALSE;
}
#endif
/**
* Multicast
*/
static inline gboolean in6_is_addr_multicast(struct e_in6_addr *a) {
if (a->bytes[0] == 0xff) {
return TRUE;
}
return FALSE;
}
#ifdef HAVE_GEOIP_V6
static void
add_geoip_info_entry(proto_tree *geoip_info_tree, proto_item *geoip_info_item, tvbuff_t *tvb, gint offset, const struct e_in6_addr *ip, int isdst)
{
guint num_dbs = geoip_db_num_dbs();
guint item_cnt = 0;
guint dbnum;
for (dbnum = 0; dbnum < num_dbs; dbnum++) {
char *geoip_str = geoip_db_lookup_ipv6(dbnum, *ip, NULL);
int db_type = geoip_db_type(dbnum);
int geoip_hf, geoip_local_hf;
switch (db_type) {
case GEOIP_COUNTRY_EDITION_V6:
geoip_hf = hf_geoip_country;
geoip_local_hf = (isdst) ? hf_geoip_dst_country : hf_geoip_src_country;
break;
#if NUM_DB_TYPES > 31
case GEOIP_CITY_EDITION_REV0_V6:
case GEOIP_CITY_EDITION_REV1_V6:
geoip_hf = hf_geoip_city;
geoip_local_hf = (isdst) ? hf_geoip_dst_city : hf_geoip_src_city;
break;
case GEOIP_ORG_EDITION_V6:
geoip_hf = hf_geoip_org;
geoip_local_hf = (isdst) ? hf_geoip_dst_org : hf_geoip_src_org;
break;
case GEOIP_ISP_EDITION_V6:
geoip_hf = hf_geoip_isp;
geoip_local_hf = (isdst) ? hf_geoip_dst_isp : hf_geoip_src_isp;
break;
case GEOIP_ASNUM_EDITION_V6:
geoip_hf = hf_geoip_asnum;
geoip_local_hf = (isdst) ? hf_geoip_dst_asnum : hf_geoip_src_asnum;
break;
#endif /* DB_NUM_TYPES */
case WS_LAT_FAKE_EDITION:
geoip_hf = hf_geoip_lat;
geoip_local_hf = (isdst) ? hf_geoip_dst_lat : hf_geoip_src_lat;
break;
case WS_LON_FAKE_EDITION:
geoip_hf = hf_geoip_lon;
geoip_local_hf = (isdst) ? hf_geoip_dst_lon : hf_geoip_src_lon;
break;
default:
continue;
}
if (geoip_str) {
proto_item *item;
if (db_type == WS_LAT_FAKE_EDITION || db_type == WS_LON_FAKE_EDITION) {
/* Convert latitude, longitude to double. Fix bug #5077 */
item = proto_tree_add_double_format_value(geoip_info_tree, geoip_local_hf, tvb,
offset, 16, g_ascii_strtod(geoip_str, NULL), "%s", geoip_str);
PROTO_ITEM_SET_GENERATED(item);
item = proto_tree_add_double_format_value(geoip_info_tree, geoip_hf, tvb,
offset, 16, g_ascii_strtod(geoip_str, NULL), "%s", geoip_str);
PROTO_ITEM_SET_GENERATED(item);
PROTO_ITEM_SET_HIDDEN(item);
} else {
item = proto_tree_add_string(geoip_info_tree, geoip_local_hf, tvb,
offset, 16, geoip_str);
PROTO_ITEM_SET_GENERATED(item);
item = proto_tree_add_string(geoip_info_tree, geoip_hf, tvb,
offset, 16, geoip_str);
PROTO_ITEM_SET_GENERATED(item);
PROTO_ITEM_SET_HIDDEN(item);
}
item_cnt++;
proto_item_append_text(geoip_info_item, "%s%s", plurality(item_cnt, "", ", "), geoip_str);
wmem_free(NULL, geoip_str);
}
}
if (item_cnt == 0)
proto_item_append_text(geoip_info_item, "Unknown");
}
static void
add_geoip_info(proto_tree *tree, tvbuff_t *tvb, gint offset, const struct e_in6_addr *src, const struct e_in6_addr *dst)
{
guint num_dbs;
proto_item *geoip_info_item;
proto_tree *geoip_info_tree;
num_dbs = geoip_db_num_dbs();
if (num_dbs < 1)
return;
geoip_info_tree = proto_tree_add_subtree(tree, tvb, offset + IP6H_SRC, 16, ett_geoip_info, &geoip_info_item, "Source GeoIP: ");
PROTO_ITEM_SET_GENERATED(geoip_info_item);
add_geoip_info_entry(geoip_info_tree, geoip_info_item, tvb, offset + IP6H_SRC, src, 0);
geoip_info_tree = proto_tree_add_subtree(tree, tvb, offset + IP6H_DST, 16, ett_geoip_info, &geoip_info_item, "Destination GeoIP: ");
PROTO_ITEM_SET_GENERATED(geoip_info_item);
add_geoip_info_entry(geoip_info_tree, geoip_info_item, tvb, offset + IP6H_DST, dst, 1);
}
#endif /* HAVE_GEOIP_V6 */
static void
ipv6_reassemble_init(void)
{
reassembly_table_init(&ipv6_reassembly_table,
&addresses_reassembly_table_functions);
}
static void
ipv6_reassemble_cleanup(void)
{
reassembly_table_destroy(&ipv6_reassembly_table);
}
enum {
IPv6_RT_HEADER_SOURCE_ROUTING=0,
IPv6_RT_HEADER_NIMROD,
IPv6_RT_HEADER_MobileIP,
IPv6_RT_HEADER_RPL
};
/* Routing Header Types */
static const value_string routing_header_type[] = {
{ IPv6_RT_HEADER_SOURCE_ROUTING, "IPv6 Source Routing" },
{ IPv6_RT_HEADER_NIMROD, "Nimrod" },
{ IPv6_RT_HEADER_MobileIP, "Mobile IP" },
{ IPv6_RT_HEADER_RPL, "RPL" },
{ 0, NULL }
};
static int
dissect_routing6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) {
struct ip6_rthdr rt;
guint len;
proto_tree *rthdr_tree;
proto_item *pi, *ti, *ti_len, *ti_seg;
int offset = 0;
struct e_in6_addr *addr, *dst_addr = NULL;
ipv6_meta_t *ipv6_info;
ipv6_info = (ipv6_meta_t *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_META);
/* addr contains the final destination address after dissection of a routing type is finished */
addr = wmem_new0(pinfo->pool, struct e_in6_addr);
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 routing");
tvb_memcpy(tvb, (guint8 *)&rt, offset, sizeof(rt));
len = (rt.ip6r_len + 1) << 3;
/* !!! specify length */
pi = proto_tree_add_item(tree, proto_ipv6_routing, tvb, offset, len, ENC_NA);
proto_item_append_text(pi, " (%s)", val_to_str(rt.ip6r_type, routing_header_type, "Unknown type %u"));
rthdr_tree = proto_item_add_subtree(pi, ett_ipv6_routing);
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti_len = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(ti_len, " (%d bytes)", len);
offset += 1;
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti_seg = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_segleft, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* IPv6 Source Routing Header (Type 0) */
if (rt.ip6r_type == IPv6_RT_HEADER_SOURCE_ROUTING) {
int offlim;
guint rt0_addr_count;
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_src_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt.ip6r_len % 2 != 0) {
expert_add_info_format(pinfo, ti_len, &ei_ipv6_routing_invalid_length,
"IPv6 Routing Header extension header length must not be odd");
} else {
rt0_addr_count = rt.ip6r_len / 2;
if (rt.ip6r_segleft > rt0_addr_count) {
expert_add_info_format(pinfo, ti_seg, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 0 Routing Header segments left field must not exceed address count (%u)", rt0_addr_count);
}
offlim = offset + rt0_addr_count * IPv6_ADDR_SIZE;
for (; offset < offlim; offset += IPv6_ADDR_SIZE) {
ti = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_src_addr, tvb,
offset, IPv6_ADDR_SIZE, ENC_NA);
tvb_get_ipv6(tvb, offset, addr);
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
}
dst_addr = addr;
}
}
/* Mobile IPv6 Routing Header (Type 2) */
else if (rt.ip6r_type == IPv6_RT_HEADER_MobileIP) {
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_mipv6_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt.ip6r_len != 2) {
expert_add_info_format(pinfo, ti_len, &ei_ipv6_routing_invalid_length,
"IPv6 Type 2 Routing Header extension header length must equal 2");
} else {
if (rt.ip6r_segleft != 1) {
expert_add_info_format(pinfo, ti_seg, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 2 Routing Header segments left field must equal 1");
}
ti = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_mipv6_home_address, tvb,
offset, IPv6_ADDR_SIZE, ENC_NA);
tvb_get_ipv6(tvb, offset, addr);
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
dst_addr = addr;
}
}
/* RPL Source Routing Header (Type 3) */
else if (rt.ip6r_type == IPv6_RT_HEADER_RPL) {
guint8 cmprI;
guint8 cmprE;
guint8 pad;
guint32 reserved;
gint rpl_addr_count;
/* IPv6 destination address used for elided bytes */
struct e_in6_addr dstAddr;
/* IPv6 source address used for strict checking */
struct e_in6_addr srcAddr;
memcpy((guint8 *)&dstAddr, pinfo->dst.data, pinfo->dst.len);
memcpy((guint8 *)&srcAddr, pinfo->src.data, pinfo->src.len);
/* from RFC6554: Multicast addresses MUST NOT appear in the IPv6 Destination Address field */
if(g_ipv6_rpl_srh_strict_rfc_checking && in6_is_addr_multicast(&dstAddr)){
expert_add_info(pinfo, pi, &ei_ipv6_dst_addr_not_multicast);
}
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_cmprI, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_cmprE, tvb, offset, 4, ENC_BIG_ENDIAN);
ti = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_pad, tvb, offset, 4, ENC_BIG_ENDIAN);
cmprI = tvb_get_guint8(tvb, offset) & 0xF0;
cmprE = tvb_get_guint8(tvb, offset) & 0x0F;
pad = tvb_get_guint8(tvb, offset + 1) & 0xF0;
/* Shift bytes over */
cmprI >>= 4;
pad >>= 4;
/* from RFC6554: when CmprI and CmprE are both 0, Pad MUST carry a value of 0 */
if(g_ipv6_rpl_srh_strict_rfc_checking && (cmprI == 0 && cmprE == 0 && pad != 0)){
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_cmpri_cmpre_pad, "When cmprI equals 0 and cmprE equals 0, pad MUST equal 0 but instead was %d", pad);
}
ti = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
reserved = tvb_get_bits32(tvb, ((offset + 1) * 8) + 4, 20, ENC_BIG_ENDIAN);
if(g_ipv6_rpl_srh_strict_rfc_checking && reserved != 0){
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_reserved, "Reserved field must equal 0 but instead was %d", reserved);
}
/* From RFC6554:
* n = (((Hdr Ext Len * 8) - Pad - (16 - CmprE)) / (16 - CmprI)) + 1
*/
rpl_addr_count = 0;
if (rt.ip6r_len > 0) {
rpl_addr_count = (((rt.ip6r_len * 8) - pad - (16 - cmprE)) / (16 - cmprI)) + 1;
}
ti = proto_tree_add_int(rthdr_tree, hf_ipv6_routing_rpl_addr_count, tvb, offset, 2, rpl_addr_count);
PROTO_ITEM_SET_GENERATED(ti);
if (rpl_addr_count < 0) {
/* This error should always be reported */
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_addr_count_ge0, "Calculated total address count must be greater than or equal to 0, instead was %d", rpl_addr_count);
}
else if (rt.ip6r_segleft > (guint)rpl_addr_count) {
expert_add_info_format(pinfo, ti_seg, &ei_ipv6_routing_invalid_segleft,
"IPv6 RPL Routing Header segments left field must not exceed address count (%d)", rpl_addr_count);
}
if (rpl_addr_count > 0) {
offset += 4;
/* We use cmprI for internal (e.g.: not last) address for how many bytes to elide, so actual bytes present = 16-CmprI */
while(rpl_addr_count > 1) {
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_addr, tvb, offset, (16-cmprI), ENC_NA);
/* Display Full Address */
memcpy((guint8 *)addr, (guint8 *)&dstAddr, sizeof(dstAddr));
tvb_memcpy(tvb, (guint8 *)addr + cmprI, offset, (16-cmprI));
ti = proto_tree_add_ipv6(rthdr_tree, hf_ipv6_routing_rpl_fulladdr, tvb, offset, (16-cmprI), addr);
PROTO_ITEM_SET_GENERATED(ti);
offset += (16-cmprI);
rpl_addr_count--;
if(g_ipv6_rpl_srh_strict_rfc_checking){
/* from RFC6554: */
/* The SRH MUST NOT specify a path that visits a node more than once. */
/* To do this, we will just check the current 'addr' against the next addresses */
gint tempSegments;
gint tempOffset;
tempSegments = rpl_addr_count; /* Has already been decremented above */
tempOffset = offset; /* Has already been moved */
while(tempSegments > 1) {
struct e_in6_addr tempAddr;
memcpy((guint8 *)&tempAddr, (guint8 *)&dstAddr, sizeof(dstAddr));
tvb_memcpy(tvb, (guint8 *)&tempAddr + cmprI, tempOffset, (16-cmprI));
/* Compare the addresses */
if (memcmp(addr->bytes, tempAddr.bytes, 16) == 0) {
/* Found a later address that is the same */
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_mult_inst_same_addr);
break;
}
tempOffset += (16-cmprI);
tempSegments--;
}
if (tempSegments == 1) {
struct e_in6_addr tempAddr;
memcpy((guint8 *)&tempAddr, (guint8 *)&dstAddr, sizeof(dstAddr));
tvb_memcpy(tvb, (guint8 *)&tempAddr + cmprE, tempOffset, (16-cmprE));
/* Compare the addresses */
if (memcmp(addr->bytes, tempAddr.bytes, 16) == 0) {
/* Found a later address that is the same */
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_mult_inst_same_addr);
}
}
/* IPv6 Source and Destination addresses of the encapsulating datagram (MUST) not appear in the SRH*/
if (memcmp(addr->bytes, srcAddr.bytes, 16) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_src_addr);
}
if (memcmp(addr->bytes, dstAddr.bytes, 16) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_dst_addr);
}
/* Multicast addresses MUST NOT appear in the in SRH */
if(in6_is_addr_multicast(addr)){
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
}
}
/* We use cmprE for last address for how many bytes to elide, so actual bytes present = 16-CmprE */
if (rpl_addr_count == 1) {
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_addr, tvb, offset, (16-cmprE), ENC_NA);
/* Display Full Address */
memcpy((guint8 *)addr, (guint8 *)&dstAddr, sizeof(dstAddr));
tvb_memcpy(tvb, (guint8 *)addr + cmprE, offset, (16-cmprE));
ti = proto_tree_add_ipv6(rthdr_tree, hf_ipv6_routing_rpl_fulladdr, tvb, offset, (16-cmprE), addr);
PROTO_ITEM_SET_GENERATED(ti);
/* offset += (16-cmprE); */
if(g_ipv6_rpl_srh_strict_rfc_checking){
/* IPv6 Source and Destination addresses of the encapsulating datagram (MUST) not appear in the SRH*/
if (memcmp(addr->bytes, srcAddr.bytes, 16) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_src_addr);
}
if (memcmp(addr->bytes, dstAddr.bytes, 16) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_dst_addr);
}
/* Multicast addresses MUST NOT appear in the in SRH */
if(in6_is_addr_multicast(addr)){
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
}
dst_addr = addr;
}
}
}
if (dst_addr != NULL && rt.ip6r_segleft > 0) {
set_address(&pinfo->dst, AT_IPv6, IPv6_ADDR_SIZE, dst_addr);
}
ipv6_info->exthdr_count++;
return len;
}
static int
dissect_frag6(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree,
guint16 *frag_off, gboolean *frag_flg, guint32 *frag_ident) {
proto_item *pi, *ti;
proto_tree *frag_tree;
guint8 nxt;
guint16 offlg;
ipv6_meta_t *ipv6_info;
ipv6_info = (ipv6_meta_t *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_META);
nxt = tvb_get_guint8(tvb, offset);
offlg = tvb_get_ntohs(tvb, offset + 2);
*frag_off = offlg & IP6F_OFF_MASK; /* offset in bytes */
*frag_flg = offlg & IP6F_MORE_FRAG;
*frag_ident = tvb_get_ntohl(tvb, offset + 4);
col_add_fstr(pinfo->cinfo, COL_INFO, "IPv6 fragment (off=%u more=%s ident=0x%08x nxt=%u)",
*frag_off, *frag_flg ? "y" : "n", *frag_ident, nxt);
/* IPv6 Fragmentation Header has fixed length of 8 bytes */
pi = proto_tree_add_item(tree, proto_ipv6_fraghdr, tvb, offset, 8, ENC_NA);
if (ipv6_info->jumbo_length) {
expert_add_info(pinfo, pi, &ei_ipv6_opt_jumbo_fragment);
}
frag_tree = proto_item_add_subtree(pi, ett_ipv6_fraghdr);
if (frag_tree) {
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_reserved_octet, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti = proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_offset, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_item_append_text(ti, " (%d bytes)", *frag_off);
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_reserved_bits, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_more, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_ident, tvb, offset, 4, ENC_BIG_ENDIAN);
/*offset += 4;*/
}
ipv6_info->exthdr_count++;
return 8;
}
static const value_string rtalertvals[] = {
{ IP6OPT_RTALERT_MLD, "MLD" },
{ IP6OPT_RTALERT_RSVP, "RSVP" },
{ IP6OPT_RTALERT_ACTNET, "Active Network" },
{ 0, NULL }
};
static int
dissect_unknown_exthdr(tvbuff_t *tvb, int offset, proto_tree *tree)
{
int len;
proto_tree *unkhdr_tree;
proto_item *ti, *ti_len;
len = (tvb_get_guint8(tvb, offset + 1) + 1) << 3;
if (tree) {
/* !!! specify length */
ti = proto_tree_add_item(tree, hf_ipv6_unknown_hdr, tvb, offset, len, ENC_NA);
unkhdr_tree = proto_item_add_subtree(ti, ett_ipv6);
proto_tree_add_item(unkhdr_tree, hf_ipv6_unknown_hdr_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti_len = proto_tree_add_item(unkhdr_tree, hf_ipv6_unknown_hdr_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(ti_len, " (%d byte%s)", len, plurality(len, "", "s"));
/* offset += 1; */
}
return len;
}
static int
dissect_opts(tvbuff_t *tvb, int offset, proto_tree *tree, packet_info *pinfo, const int exthdr_proto, ws_ip *iph)
{
int len;
int offset_end, offset_opt_end;
proto_tree *exthdr_tree, *opt_tree;
proto_item *ti, *ti_len, *ti_opt, *ti_opt_len;
int hf_exthdr_item_nxt, hf_exthdr_item_length;
guint8 opt_len, opt_type;
ipv6_meta_t *ipv6_info;
guint32 plen_jumbo;
gboolean hopopts = FALSE;
ipv6_info = (ipv6_meta_t *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_META);
hopopts = (exthdr_proto == proto_ipv6_hopopts);
len = (tvb_get_guint8(tvb, offset + 1) + 1) << 3;
offset_end = offset + len;
/* !!! specify length */
ti = proto_tree_add_item(tree, exthdr_proto, tvb, offset, len, ENC_NA);
if (hopopts && ipv6_info->exthdr_count > 0) {
/* IPv6 Hop-by-Hop must appear immediately after IPv6 header (RFC 2460) */
expert_add_info(pinfo, ti, &ei_ipv6_hopopts_not_first);
}
exthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
if (exthdr_proto == proto_ipv6_hopopts) {
hf_exthdr_item_nxt = hf_ipv6_hopopts_nxt;
hf_exthdr_item_length = hf_ipv6_hopopts_length;
} else if (exthdr_proto == proto_ipv6_dstopts) {
hf_exthdr_item_nxt = hf_ipv6_dstopts_nxt;
hf_exthdr_item_length = hf_ipv6_dstopts_length;
} else {
DISSECTOR_ASSERT_NOT_REACHED();
}
proto_tree_add_item(exthdr_tree, hf_exthdr_item_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti_len = proto_tree_add_item(exthdr_tree, hf_exthdr_item_length, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(ti_len, " (%d byte%s)", len, plurality(len, "", "s"));
offset += 1;
while (offset_end > offset) {
/* there are more options */
/* IPv6 Option */
ti_opt = proto_tree_add_item(exthdr_tree, hf_ipv6_opt, tvb, offset, 1, ENC_NA);
opt_tree = proto_item_add_subtree(ti_opt, ett_ipv6_opt);
/* Option type */
proto_tree_add_item(opt_tree, hf_ipv6_opt_type, tvb, offset, 1, ENC_BIG_ENDIAN);
opt_type = tvb_get_guint8(tvb, offset);
/* Add option name to option root label */
proto_item_append_text(ti_opt, " (%s", val_to_str_ext(opt_type, &ipv6_opt_vals_ext, "Unknown %u"));
/* The Pad1 option is a special case, and contains no data. */
if (opt_type == IP6OPT_PAD1) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_pad1, tvb, offset, 1, ENC_NA);
offset += 1;
proto_item_append_text(ti_opt, ")");
continue;
}
offset += 1;
/* Option length */
ti_opt_len = proto_tree_add_item(opt_tree, hf_ipv6_opt_length, tvb, offset, 1, ENC_BIG_ENDIAN);
opt_len = tvb_get_guint8(tvb, offset);
proto_item_set_len(ti_opt, opt_len + 2);
offset += 1;
offset_opt_end = offset + opt_len;
switch (opt_type) {
case IP6OPT_PADN:
/* RFC 2460 states :
* "The PadN option is used to insert two or more octets of
* padding into the Options area of a header. For N octets of
* padding, the Opt Data Len field contains the value N-2, and
* the Option Data consists of N-2 zero-valued octets."
*/
proto_tree_add_item(opt_tree, hf_ipv6_opt_padn, tvb,
offset, opt_len, ENC_NA);
offset += opt_len;
break;
case IP6OPT_TEL:
if (opt_len != 1) {
expert_add_info_format(pinfo, ti_opt_len, &ei_ipv6_opt_tel_invalid_len,
"Tunnel Encapsulation Limit: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_tel, tvb,
offset, 1, ENC_BIG_ENDIAN);
offset += 1;
break;
case IP6OPT_JUMBO:
if (opt_len != 4) {
expert_add_info_format(pinfo, ti_opt_len, &ei_ipv6_opt_jumbo_invalid_len,
"Jumbo payload: Invalid length (%u bytes)", opt_len);
}
ti = proto_tree_add_item(opt_tree, hf_ipv6_opt_jumbo, tvb,
offset, 4, ENC_BIG_ENDIAN);
if (!hopopts) {
expert_add_info(pinfo, ti_opt, &ei_ipv6_opt_jumbo_not_hopbyhop);
} else if (ipv6_info->exthdr_count == 0) {
if (!ipv6_info->jumbogram) {
if (iph->ip_len) {
expert_add_info(pinfo, ti_opt, &ei_ipv6_opt_jumbo_prohibited);
proto_item_append_text(ti, " [Ignored]");
} else {
ipv6_info->jumbogram = TRUE;
plen_jumbo = tvb_get_ntohl(tvb, offset);
if (plen_jumbo < 65536) {
expert_add_info(pinfo, ti, &ei_ipv6_opt_jumbo_truncated);
} else {
ipv6_info->jumbo_length = plen_jumbo;
}
}
} else {
/* XXX - Repeated jumbo TLV */
;
}
}
offset += 4;
break;
case IP6OPT_RTALERT:
{
if (opt_len != 2) {
expert_add_info_format(pinfo, ti_opt_len, &ei_ipv6_opt_rtalert_invalid_len,
"Router alert: Invalid Length (%u bytes)",
opt_len + 2);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_rtalert, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
break;
}
case IP6OPT_HOME_ADDRESS:
{
if (opt_len != 16) {
expert_add_info_format(pinfo, ti_opt_len, &ei_ipv6_mipv6_home_address_invalid_len,
"Home Address: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_mipv6_home_address, tvb,
offset, 16, ENC_NA);
set_address_tvb(&pinfo->src, AT_IPv6, 16, tvb, offset);
offset += 16;
break;
}
case IP6OPT_CALIPSO:
{
guint8 cmpt_length;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_doi, tvb,
offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_cmpt_length, tvb,
offset, 1, ENC_BIG_ENDIAN);
cmpt_length = tvb_get_guint8(tvb, offset);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_sens_level, tvb,
offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Need to add Check Checksum..*/
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_checksum, tvb,
offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_cmpt_bitmap, tvb,
offset, cmpt_length*4, ENC_NA);
offset += cmpt_length*4;
break;
}
case IP6OPT_QUICKSTART:
{
guint8 command = tvb_get_guint8(tvb, offset);
guint8 function = command >> 4;
guint8 rate = command & QS_RATE_MASK;
guint8 ttl_diff;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_func, tvb, offset, 1, ENC_BIG_ENDIAN);
if (function == QS_RATE_REQUEST) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_rate, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_ttl, tvb, offset, 1, ENC_BIG_ENDIAN);
ttl_diff = (iph->ip_ttl - tvb_get_guint8(tvb, offset) % 256);
ti = proto_tree_add_uint(opt_tree, hf_ipv6_opt_qs_ttl_diff,
tvb, offset, 1, ttl_diff);
PROTO_ITEM_SET_GENERATED(ti);
proto_item_append_text(ti_opt, ", %s, QS TTL %u, QS TTL diff %u",
val_to_str_ext(rate, &qs_rate_vals_ext, "Unknown (%u)"),
tvb_get_guint8(tvb, offset), ttl_diff);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_nonce, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
} else if (function == QS_RATE_REPORT) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_rate, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_item_append_text(ti_opt, ", %s",
val_to_str_ext(rate, &qs_rate_vals_ext, "Unknown (%u)"));
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_unused, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_nonce, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
}
break;
case IP6OPT_RPL:
{
static const int * rpl_flags[] = {
&hf_ipv6_opt_rpl_flag_o,
&hf_ipv6_opt_rpl_flag_r,
&hf_ipv6_opt_rpl_flag_f,
&hf_ipv6_opt_rpl_flag_rsv,
NULL
};
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_rpl_flag, ett_ipv6_opt_rpl, rpl_flags, ENC_NA);
offset +=1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_rpl_instance_id, tvb, offset, 1, ENC_NA);
offset +=1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_rpl_senderrank, tvb, offset, 2, ENC_BIG_ENDIAN);
offset +=2;
/* TODO: Add dissector of sub TLV */
}
break;
case IP6OPT_MPL:
{
static const int * mpl_flags[] = {
&hf_ipv6_opt_mpl_flag_s,
&hf_ipv6_opt_mpl_flag_m,
&hf_ipv6_opt_mpl_flag_v,
&hf_ipv6_opt_mpl_flag_rsv,
NULL
};
static const guint8 seed_id_len_arr[4] = {0, 2, 8, 16};
guint8 seed_id_len;
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_mpl_flag, ett_ipv6_opt_mpl, mpl_flags, ENC_NA);
seed_id_len = seed_id_len_arr[tvb_get_guint8(tvb, offset) >> 6];
offset +=1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_mpl_sequence, tvb, offset, 1, ENC_NA);
offset +=1;
if (seed_id_len > 0) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_mpl_seed_id, tvb, offset, seed_id_len, ENC_NA);
offset +=seed_id_len;
}
}
break;
case IP6OPT_EXP_1E:
case IP6OPT_EXP_3E:
case IP6OPT_EXP_5E:
case IP6OPT_EXP_7E:
case IP6OPT_EXP_9E:
case IP6OPT_EXP_BE:
case IP6OPT_EXP_DE:
case IP6OPT_EXP_FE:
proto_tree_add_item(opt_tree, hf_ipv6_opt_experimental, tvb,
offset, opt_len, ENC_NA);
offset += opt_len;
break;
default:
proto_tree_add_item(opt_tree, hf_ipv6_opt_unknown, tvb,
offset, opt_len, ENC_NA);
offset += opt_len;
break;
}
if(offset < offset_opt_end){
ti = proto_tree_add_item(opt_tree, hf_ipv6_opt_unknown_data, tvb, offset, offset_opt_end - offset, ENC_NA);
expert_add_info(pinfo, ti, &ei_ipv6_opt_unknown_data);
offset = offset_opt_end;
}
/* Close the ) to option root label */
proto_item_append_text(ti_opt, ")");
}
ipv6_info->exthdr_count++;
return len;
}
static int
dissect_hopopts(tvbuff_t *tvb, packet_info * pinfo, proto_tree *tree, void *data)
{
ws_ip* iph = (ws_ip*)data;
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 hop-by-hop options");
return dissect_opts(tvb, 0, tree, pinfo, proto_ipv6_hopopts, iph);
}
static int
dissect_dstopts(tvbuff_t *tvb, packet_info * pinfo, proto_tree *tree, void *data)
{
ws_ip* iph = (ws_ip*)data;
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 destination options");
return dissect_opts(tvb, 0, tree, pinfo, proto_ipv6_dstopts, iph);
}
/* START SHIM6 PART */
static guint16
shim6_checksum(tvbuff_t *tvb, int offset, int len)
{
vec_t cksum_vec[1];
SET_CKSUM_VEC_TVB(cksum_vec[0], tvb, offset, len);
return in_cksum(&cksum_vec[0], 1);
}
static const value_string shimoptvals[] = {
{ SHIM6_OPT_RESPVAL, "Responder Validator Option" },
{ SHIM6_OPT_LOCLIST, "Locator List Option" },
{ SHIM6_OPT_LOCPREF, "Locator Preferences Option" },
{ SHIM6_OPT_CGAPDM, "CGA Parameter Data Structure Option" },
{ SHIM6_OPT_CGASIG, "CGA Signature Option" },
{ SHIM6_OPT_ULIDPAIR, "ULID Pair Option" },
{ SHIM6_OPT_FII, "Forked Instance Identifier Option" },
{ 0, NULL }
};
static const value_string shimverifmethods[] = {
{ SHIM6_VERIF_HBA, "HBA" },
{ SHIM6_VERIF_CGA, "CGA" },
{ 0, NULL }
};
static const value_string shimflags[] _U_ = {
{ SHIM6_FLAG_BROKEN, "BROKEN" },
{ SHIM6_FLAG_TEMPORARY, "TEMPORARY" },
{ 0, NULL }
};
static const value_string shimreapstates[] = {
{ SHIM6_REAP_OPERATIONAL, "Operational" },
{ SHIM6_REAP_EXPLORING, "Exploring" },
{ SHIM6_REAP_INBOUNDOK, "InboundOK" },
{ 0, NULL }
};
static const value_string shim6_protocol[] = {
{ 0, "SHIM6" },
{ 1, "HIP" },
{ 0, NULL }
};
static void
dissect_shim6_opt_loclist(proto_tree * opt_tree, tvbuff_t * tvb, gint *offset)
{
proto_tree *subtree;
guint count;
guint optlen;
int p = *offset;
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_loclist, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
optlen = tvb_get_guint8(tvb, p);
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_locnum, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
/* Verification Methods */
subtree = proto_tree_add_subtree(opt_tree, tvb, p, optlen,
ett_ipv6_shim6_verif_methods, NULL, "Locator Verification Methods");
for (count=0; count < optlen; count++)
proto_tree_add_item(subtree, hf_ipv6_shim6_opt_loc_verif_methods, tvb,
p+count, 1, ENC_BIG_ENDIAN);
p += optlen;
/* Padding, included in length field */
if ((7 - optlen % 8) > 0) {
proto_tree_add_item(opt_tree, hf_ipv6_padding, tvb, p, (7 - optlen % 8), ENC_NA);
p += (7 - optlen % 8);
}
/* Locators */
subtree = proto_tree_add_subtree(opt_tree, tvb, p, 16 * optlen, ett_ipv6_shim6_locators, NULL, "Locators");
for (count=0; count < optlen; count++) {
proto_tree_add_item(subtree, hf_ipv6_shim6_locator, tvb, p, 16, ENC_NA);
p += 16;
}
*offset = p;
}
static void
dissect_shim6_opt_loc_pref(proto_tree * opt_tree, tvbuff_t * tvb, gint *offset, gint len, packet_info *pinfo)
{
proto_tree *subtree;
gint p;
gint optlen;
gint count;
p = *offset;
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_loclist, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
optlen = tvb_get_guint8(tvb, p);
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_elemlen, tvb, p, 1, ENC_BIG_ENDIAN);
if (optlen < 1 || optlen > 3) {
proto_tree_add_expert_format(opt_tree, pinfo, &ei_ipv6_shim6_opt_elemlen_invalid, tvb, p, 1,
"Invalid element length: %u", optlen);
return;
}
p++;
/* Locator Preferences */
count = 1;
while (p < len) {
subtree = proto_tree_add_subtree_format(opt_tree, tvb, p, optlen, ett_ipv6_shim6_loc_pref, NULL,
"Locator Preferences %u", count);
/* Flags */
if (optlen >= 1)
proto_tree_add_item(subtree, hf_ipv6_shim6_loc_flag, tvb, p, 1, ENC_BIG_ENDIAN);
/* Priority */
if (optlen >= 2)
proto_tree_add_item(subtree, hf_ipv6_shim6_loc_prio, tvb, p+1, 1, ENC_BIG_ENDIAN);
/* Weight */
if (optlen >= 3)
proto_tree_add_item(subtree, hf_ipv6_shim6_loc_weight, tvb, p+2, 1, ENC_BIG_ENDIAN);
/*
* Shim6 Draft 08 doesn't specify the format when the Element length is
* more than three, except that any such formats MUST be defined so that
* the first three octets are the same as in the above case, that is, a
* of a 1 octet flags field followed by a 1 octet priority field, and a
* 1 octet weight field.
*/
p += optlen;
count++;
}
*offset = p;
}
static int
dissect_shimopts(tvbuff_t *tvb, int offset, proto_tree *tree, packet_info *pinfo)
{
int len, total_len;
gint p;
gint padding;
proto_tree *opt_tree;
proto_item *ti;
p = offset;
p += 4;
len = tvb_get_ntohs(tvb, offset+2);
padding = 7 - ((len + 3) % 8);
total_len = 4 + len + padding;
if (tree)
{
/* Option Type */
opt_tree = proto_tree_add_subtree(tree, tvb, offset, total_len, ett_ipv6_shim6_option, NULL,
val_to_str_const( (tvb_get_ntohs(tvb, offset) & SHIM6_BITMASK_OPT_TYPE) >> 1, shimoptvals, "Unknown Option Type"));
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_type, tvb, offset, 2, ENC_BIG_ENDIAN);
/* Critical */
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_critical, tvb, offset+1, 1, ENC_BIG_ENDIAN);
/* Content Length */
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_len, tvb, offset + 2, 2, ENC_BIG_ENDIAN);
ti = proto_tree_add_uint(opt_tree, hf_ipv6_shim6_opt_total_len, tvb, offset+2, 2, total_len);
PROTO_ITEM_SET_GENERATED(ti);
/* Option Type Specific */
switch (tvb_get_ntohs(tvb, offset) >> 1)
{
case SHIM6_OPT_RESPVAL:
proto_tree_add_item(opt_tree, hf_ipv6_shim6_validator, tvb, p, len, ENC_NA);
p += len;
if (total_len-(len+4) > 0)
proto_tree_add_item(opt_tree, hf_ipv6_padding, tvb, p, total_len-(len+4), ENC_NA);
break;
case SHIM6_OPT_LOCLIST:
dissect_shim6_opt_loclist(opt_tree, tvb, &p);
break;
case SHIM6_OPT_LOCPREF:
dissect_shim6_opt_loc_pref(opt_tree, tvb, &p, offset+len+4, pinfo);
if (total_len-(len+4) > 0)
proto_tree_add_item(opt_tree, hf_ipv6_padding, tvb, p, total_len-(len+4), ENC_NA);
break;
case SHIM6_OPT_CGAPDM:
proto_tree_add_item(opt_tree, hf_ipv6_shim6_cga_parameter_data_structure, tvb, p, len, ENC_NA);
p += len;
if (total_len-(len+4) > 0)
proto_tree_add_item(opt_tree, hf_ipv6_padding, tvb, p, total_len-(len+4), ENC_NA);
break;
case SHIM6_OPT_CGASIG:
proto_tree_add_item(opt_tree, hf_ipv6_shim6_cga_signature, tvb, p, len, ENC_NA);
p += len;
if (total_len-(len+4) > 0)
proto_tree_add_item(opt_tree, hf_ipv6_padding, tvb, p, total_len-(len+4), ENC_NA);
break;
case SHIM6_OPT_ULIDPAIR:
proto_tree_add_item(opt_tree, hf_ipv6_shim6_reserved, tvb, p, 4, ENC_NA);
p += 4;
proto_tree_add_item(opt_tree, hf_ipv6_shim6_sulid, tvb, p, 16, ENC_NA);
p += 16;
proto_tree_add_item(opt_tree, hf_ipv6_shim6_rulid, tvb, p, 16, ENC_NA);
p += 16;
break;
case SHIM6_OPT_FII:
proto_tree_add_item(opt_tree, hf_ipv6_shim6_opt_fii, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
default:
break;
}
}
return total_len;
}
static void
dissect_shim6_ct(proto_tree * shim_tree, gint hf_item, tvbuff_t * tvb, gint offset, const guchar * label)
{
guint8 tmp[6];
guchar *ct_str;
tmp[0] = tvb_get_guint8(tvb, offset++);
tmp[1] = tvb_get_guint8(tvb, offset++);
tmp[2] = tvb_get_guint8(tvb, offset++);
tmp[3] = tvb_get_guint8(tvb, offset++);
tmp[4] = tvb_get_guint8(tvb, offset++);
tmp[5] = tvb_get_guint8(tvb, offset++);
ct_str = wmem_strdup_printf(wmem_packet_scope(),
"%s: %02X %02X %02X %02X %02X %02X", label,
tmp[0] & SHIM6_BITMASK_CT, tmp[1], tmp[2],
tmp[3], tmp[4], tmp[5]
);
proto_tree_add_none_format(shim_tree, hf_item, tvb, offset - 6, 6, "%s", ct_str);
}
static void
dissect_shim6_probes(proto_tree * shim_tree, tvbuff_t * tvb, gint offset,
const guchar * label, guint nbr_probe,
gboolean probes_rcvd)
{
proto_tree *probes_tree;
proto_tree *probe_tree;
gint ett_probes;
gint ett_probe;
guint count;
if (probes_rcvd) {
ett_probes = ett_ipv6_shim6_probes_rcvd;
ett_probe = ett_ipv6_shim6_probe_rcvd;
} else {
ett_probes = ett_ipv6_shim6_probes_sent;
ett_probe = ett_ipv6_shim6_probe_sent;
}
probes_tree = proto_tree_add_subtree(shim_tree, tvb, offset, 40 * nbr_probe, ett_probes, NULL, label);
for (count=0; count < nbr_probe; count++) {
probe_tree = proto_tree_add_subtree_format(probes_tree, tvb, offset, 40,
ett_probe, NULL, "Probe %u", count+1);
proto_tree_add_item(probe_tree, hf_ipv6_shim6_psrc, tvb, offset, 16, ENC_NA);
offset += 16;
proto_tree_add_item(probe_tree, hf_ipv6_shim6_pdst, tvb, offset, 16, ENC_NA);
offset += 16;
proto_tree_add_item(probe_tree, hf_ipv6_shim6_pnonce, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(probe_tree, hf_ipv6_shim6_pdata, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
}
/* Dissect SHIM6 data: control messages */
static int
dissect_shimctrl(tvbuff_t *tvb, gint offset, guint type, proto_tree *shim_tree)
{
gint p;
guint8 tmp;
const gchar *sta;
guint probes_sent;
guint probes_rcvd;
p = offset;
switch (type)
{
case SHIM6_TYPE_I1:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Initiator Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_inonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
case SHIM6_TYPE_R1:
proto_tree_add_item(shim_tree, hf_ipv6_shim6_reserved2, tvb, p, 2, ENC_NA);
p += 2;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_inonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_rnonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
case SHIM6_TYPE_I2:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Initiator Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_inonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_rnonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_reserved2, tvb, p, 4, ENC_NA);
p += 4;
break;
case SHIM6_TYPE_R2:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Responder Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_inonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
case SHIM6_TYPE_R1BIS:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Packet Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_rnonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
case SHIM6_TYPE_I2BIS:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Initiator Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_inonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_rnonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_reserved2, tvb, p, 6, ENC_NA);
p += 6;
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Initiator Context Tag");
p += 6;
break;
case SHIM6_TYPE_UPD_REQ:
case SHIM6_TYPE_UPD_ACK:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Receiver Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_rnonce, tvb, p, 4, ENC_BIG_ENDIAN);
p += 4;
break;
case SHIM6_TYPE_KEEPALIVE:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Receiver Context Tag");
p += 6;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_reserved2, tvb, p, 4, ENC_NA);
p += 4;
break;
case SHIM6_TYPE_PROBE:
dissect_shim6_ct(shim_tree, hf_ipv6_shim6_ct, tvb, p, "Receiver Context Tag");
p += 6;
tmp = tvb_get_guint8(tvb, p);
probes_sent = tmp & SHIM6_BITMASK_PSENT;
probes_rcvd = (tmp & SHIM6_BITMASK_PRECVD) >> 4;
proto_tree_add_item(shim_tree, hf_ipv6_shim6_psent, tvb,
p, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(shim_tree, hf_ipv6_shim6_precvd, tvb,
p, 1, ENC_BIG_ENDIAN);
p++;
sta = val_to_str_const((tvb_get_guint8(tvb, p) & SHIM6_BITMASK_STA) >> 6,
shimreapstates, "Unknown REAP State");
proto_tree_add_uint_format_value(shim_tree, hf_ipv6_shim6_reap, tvb,
p, 1, (tvb_get_guint8(tvb, p) & SHIM6_BITMASK_STA) >> 6,
"%s", sta);
proto_tree_add_item(shim_tree, hf_ipv6_shim6_reserved2, tvb, p, 3, ENC_NA);
p += 3;
/* Probes Sent */
if (probes_sent) {
dissect_shim6_probes(shim_tree, tvb, p, "Probes Sent",
probes_sent, FALSE);
p += 40 * probes_sent;
}
/* Probes Received */
if (probes_rcvd) {
dissect_shim6_probes(shim_tree, tvb, p, "Probes Received",
probes_rcvd, TRUE);
p += 40 * probes_rcvd;
}
break;
default:
break;
}
return p-offset;
}
/* Dissect SHIM6 data: payload, common part, options */
static const value_string shimctrlvals[] = {
{ SHIM6_TYPE_I1, "I1" },
{ SHIM6_TYPE_R1, "R1" },
{ SHIM6_TYPE_I2, "I2" },
{ SHIM6_TYPE_R2, "R2" },
{ SHIM6_TYPE_R1BIS, "R1bis" },
{ SHIM6_TYPE_I2BIS, "I2bis" },
{ SHIM6_TYPE_UPD_REQ, "Update Request" },
{ SHIM6_TYPE_UPD_ACK, "Update Acknowledgment" },
{ SHIM6_TYPE_KEEPALIVE, "Keepalive" },
{ SHIM6_TYPE_PROBE, "Probe" },
{ 0, NULL }
};
static void
add_shim6_checksum_additional_info(tvbuff_t * tvb, packet_info * pinfo,
proto_item * it_cksum, int offset, gboolean is_cksum_correct)
{
proto_tree *checksum_tree;
proto_item *item;
checksum_tree = proto_item_add_subtree(it_cksum, ett_ipv6_shim6_cksum);
item = proto_tree_add_boolean(checksum_tree, hf_ipv6_shim6_checksum_good, tvb,
offset, 2, is_cksum_correct);
PROTO_ITEM_SET_GENERATED(item);
item = proto_tree_add_boolean(checksum_tree, hf_ipv6_shim6_checksum_bad, tvb,
offset, 2, !is_cksum_correct);
PROTO_ITEM_SET_GENERATED(item);
if (!is_cksum_correct) {
expert_add_info(pinfo, item, &ei_ipv6_shim6_checksum_bad);
col_append_str(pinfo->cinfo, COL_INFO, " [Shim6 CHECKSUM INCORRECT]");
}
}
static int
dissect_shim6(tvbuff_t *tvb, packet_info * pinfo, proto_tree *tree, void* data _U_)
{
struct ip6_shim shim;
int offset = 0, len;
gint p;
proto_tree *shim_tree;
proto_item *ti;
guint8 tmp[5];
ipv6_meta_t *ipv6_info;
ipv6_info = (ipv6_meta_t *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_META);
tvb_memcpy(tvb, (guint8 *)&shim, offset, sizeof(shim));
len = (shim.ip6s_len + 1) << 3;
if (shim.ip6s_p & SHIM6_BITMASK_P) {
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "Shim6 (Payload)");
}
else {
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " , ", "Shim6 (%s)",
val_to_str_const(shim.ip6s_p & SHIM6_BITMASK_TYPE, shimctrlvals, "Unknown"));
}
ti = proto_tree_add_item(tree, proto_ipv6_shim6, tvb, offset, len, ENC_NA);
shim_tree = proto_item_add_subtree(ti, ett_ipv6_shim6);
/* Next Header */
proto_tree_add_uint_format_value(shim_tree, hf_ipv6_shim6_nxt, tvb,
offset + (int)offsetof(struct ip6_shim, ip6s_nxt), 1, shim.ip6s_nxt,
"%s (%u)", ipprotostr(shim.ip6s_nxt), shim.ip6s_nxt);
/* Header Extension Length */
proto_tree_add_uint_format_value(shim_tree, hf_ipv6_shim6_len, tvb,
offset + (int)offsetof(struct ip6_shim, ip6s_len), 1, shim.ip6s_len,
"%u (%d bytes)", shim.ip6s_len, len);
/* P Field */
proto_tree_add_item(shim_tree, hf_ipv6_shim6_p, tvb,
offset + (int)offsetof(struct ip6_shim, ip6s_p), 1, ENC_BIG_ENDIAN);
/* skip the first 2 bytes (nxt hdr, hdr ext len, p+7bits) */
p = offset + 3;
if (shim.ip6s_p & SHIM6_BITMASK_P) {
tmp[0] = tvb_get_guint8(tvb, p++);
tmp[1] = tvb_get_guint8(tvb, p++);
tmp[2] = tvb_get_guint8(tvb, p++);
tmp[3] = tvb_get_guint8(tvb, p++);
tmp[4] = tvb_get_guint8(tvb, p++);
/* Payload Extension Header */
proto_tree_add_none_format(shim_tree, hf_ipv6_shim6_ct, tvb,
offset + (int)offsetof(struct ip6_shim, ip6s_p), 6,
"Receiver Context Tag: %02x %02x %02x %02x %02x %02x",
shim.ip6s_p & SHIM6_BITMASK_CT, tmp[0], tmp[1], tmp[2], tmp[3], tmp[4]);
} else {
/* Control Message */
guint16 csum;
int advance;
/* Message Type */
proto_tree_add_item(shim_tree, hf_ipv6_shim6_type, tvb,
offset + (int)offsetof(struct ip6_shim, ip6s_p), 1,
ENC_BIG_ENDIAN
);
/* Protocol bit (Must be zero for SHIM6) */
proto_tree_add_item(shim_tree, hf_ipv6_shim6_proto, tvb, p, 1, ENC_BIG_ENDIAN);
p++;
/* Checksum */
csum = shim6_checksum(tvb, offset, len);
if (csum == 0) {
ti = proto_tree_add_uint_format_value(shim_tree, hf_ipv6_shim6_checksum, tvb, p, 2,
tvb_get_ntohs(tvb, p), "0x%04x [correct]", tvb_get_ntohs(tvb, p));
add_shim6_checksum_additional_info(tvb, pinfo, ti, p, TRUE);
} else {
ti = proto_tree_add_uint_format_value(shim_tree, hf_ipv6_shim6_checksum, tvb, p, 2,
tvb_get_ntohs(tvb, p), "0x%04x [incorrect: should be 0x%04x]",
tvb_get_ntohs(tvb, p), in_cksum_shouldbe(tvb_get_ntohs(tvb, p), csum));
add_shim6_checksum_additional_info(tvb, pinfo, ti, p, FALSE);
}
p += 2;
/* Type specific data */
advance = dissect_shimctrl(tvb, p, shim.ip6s_p & SHIM6_BITMASK_TYPE, shim_tree);
p += advance;
/* Options */
while (p < offset+len) {
p += dissect_shimopts(tvb, p, shim_tree, pinfo);
}
}
ipv6_info->exthdr_count++;
return len;
}
/* END SHIM6 PART */
static int
dissect_ipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *ipv6_tree, *ipv6_exthdr_tree, *pt;
proto_item *ipv6_item, *ti, *pi;
proto_item *ti_ipv6_plen = NULL, *ti_ipv6_version;
guint8 nxt, tfc;
int advance;
guint32 plen;
guint16 frag_off;
gboolean frag_flg;
guint32 frag_ident;
int offset;
fragment_head *ipfd_head;
tvbuff_t *next_tvb, *options_tvb;
gboolean update_col_info = TRUE;
gboolean save_fragmented;
gboolean show_data = FALSE;
guint8 *mac_addr;
const char *name;
dissector_handle_t nxt_handle;
address addr;
ipv6_meta_t *ipv6_info;
int version;
/* Provide as much IPv4 header information as possible as some dissectors
in the ip.proto dissector table may need it */
ws_ip iph;
struct ip6_hdr *ipv6;
offset = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPv6");
col_clear(pinfo->cinfo, COL_INFO);
ipv6_item = proto_tree_add_item(tree, proto_ipv6, tvb, offset,
ipv6_exthdr_under_root ? IPv6_HDR_SIZE : -1, ENC_NA);
if (tvb_reported_length(tvb) < IPv6_HDR_SIZE) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"Invalid IPv6 header (%u bytes, need exactly 40)",
tvb_reported_length(tvb));
expert_add_info(pinfo, ipv6_item, &ei_ipv6_invalid_header);
return tvb_captured_length(tvb);
}
ipv6_tree = proto_item_add_subtree(ipv6_item, ett_ipv6);
memset(&iph, 0, sizeof(iph));
ipv6 = (struct ip6_hdr*)tvb_memdup(wmem_packet_scope(), tvb, offset, sizeof(struct ip6_hdr));
version = hi_nibble(ipv6->ip6_vfc);
ti_ipv6_version = proto_tree_add_item(ipv6_tree, hf_ipv6_version, tvb,
offset + IP6H_CTL_VFC, 1, ENC_BIG_ENDIAN);
pi = proto_tree_add_item(ipv6_tree, hf_ip_version, tvb,
offset + IP6H_CTL_VFC, 1, ENC_BIG_ENDIAN);
proto_item_append_text(pi, " [This field makes the filter match on \"ip.version == 6\" possible]");
PROTO_ITEM_SET_HIDDEN(pi);
if (version != 6) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"Bogus IPv6 version (%u, must be 6)", version);
expert_add_info_format(pinfo, ti_ipv6_version, &ei_ipv6_bogus_ipv6_version, "Bogus IPv6 version");
return offset + IP6H_CTL_VFC;
}
tfc = IPv6_HDR_TCLS(ipv6);
col_add_fstr(pinfo->cinfo, COL_DSCP_VALUE, "%u", IPDSFIELD_DSCP(tfc));
/* Get extension header and payload length */
plen = g_ntohs(ipv6->ip6_plen);
set_address_tvb(&pinfo->net_src, AT_IPv6, 16, tvb, offset + IP6H_SRC);
copy_address_shallow(&pinfo->src, &pinfo->net_src);
set_address_tvb(&pinfo->net_dst, AT_IPv6, 16, tvb, offset + IP6H_DST);
copy_address_shallow(&pinfo->dst, &pinfo->net_dst);
ipv6_info = wmem_new0(wmem_packet_scope(), ipv6_meta_t);
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_META, ipv6_info);
if (tree) {
/* !!! warning: (4-bit) version, (6-bit) DSCP, (2-bit) ECN and (20-bit) Flow */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_tclass, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
proto_item_append_text(ti, " (DSCP: %s, ECN: %s)",
val_to_str_ext_const(IPDSFIELD_DSCP(tfc), &dscp_short_vals_ext, "Unknown"),
val_to_str_ext_const(IPDSFIELD_ECN(tfc), &ecn_short_vals_ext, "Unknown"));
pt = proto_item_add_subtree(ti, ett_ipv6_traffic_class);
proto_tree_add_item(pt, hf_ipv6_tclass_dscp, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(pt, hf_ipv6_tclass_ecn, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(ipv6_tree, hf_ipv6_flow, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
ti_ipv6_plen = proto_tree_add_item(ipv6_tree, hf_ipv6_plen, tvb,
offset + IP6H_CTL_PLEN, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(ipv6_tree, hf_ipv6_nxt, tvb, offset + IP6H_CTL_NXT, 1, ENC_NA);
proto_tree_add_item(ipv6_tree, hf_ipv6_hlim, tvb,
offset + IP6H_CTL_HLIM, 1, ENC_BIG_ENDIAN);
/* Add the different items for the source address */
proto_tree_add_item(ipv6_tree, hf_ipv6_src, tvb,
offset + IP6H_SRC, 16, ENC_NA);
ti = proto_tree_add_ipv6(ipv6_tree, hf_ipv6_addr, tvb,
offset + IP6H_SRC,
16, &ipv6->ip6_src);
PROTO_ITEM_SET_HIDDEN(ti);
name = address_to_display(wmem_packet_scope(), &pinfo->src);
if (ipv6_summary_in_tree) {
set_address(&addr, AT_IPv6, 16, ipv6->ip6_src.bytes);
proto_item_append_text(ipv6_item, ", Src: %s", address_with_resolution_to_str(wmem_packet_scope(), &addr));
}
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_src_host, tvb,
offset + IP6H_SRC,
16, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_host, tvb,
offset + IP6H_SRC,
16, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
/* Extract embedded (IPv6 and MAC) address information */
if (tvb_get_ntohs(tvb, offset + IP6H_SRC) == 0x2002) { /* RFC 3056 section 2 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_6to4_gateway_ipv4, tvb,
offset + IP6H_SRC + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_6to4_sla_id, tvb,
offset + IP6H_SRC + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_gateway_ipv4, tvb,
offset + IP6H_SRC + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_sla_id, tvb,
offset + IP6H_SRC + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if (tvb_get_ntohl(tvb, offset + IP6H_SRC) == 0x20010000) { /* RFC 4380 section 4 */
guint16 mapped_port = tvb_get_ntohs(tvb, offset + IP6H_SRC + 10) ^ 0xffff;
guint32 client_v4 = tvb_get_ipv4(tvb, offset + IP6H_SRC + 12) ^ 0xffffffff;
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_teredo_server_ipv4, tvb,
offset + IP6H_SRC + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_src_teredo_port, tvb,
offset + IP6H_SRC + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_src_teredo_client_ipv4, tvb,
offset + IP6H_SRC + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_teredo_server_ipv4, tvb,
offset + IP6H_SRC + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_teredo_port, tvb,
offset + IP6H_SRC + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_teredo_client_ipv4, tvb,
offset + IP6H_SRC + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
if (tvb_get_guint8(tvb, offset + IP6H_SRC + 8) & 0x02 && tvb_get_ntohs(tvb, offset + IP6H_SRC + 11) == 0xfffe) { /* RFC 4291 appendix A */
mac_addr = (guint8 *)wmem_alloc(wmem_packet_scope(), 6);
tvb_memcpy(tvb, mac_addr, offset + IP6H_SRC + 8, 3);
tvb_memcpy(tvb, mac_addr+3, offset+ IP6H_SRC + 13, 3);
mac_addr[0] &= ~0x02;
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_src_sa_mac, tvb,
offset + IP6H_SRC + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_sa_mac, tvb,
offset + IP6H_SRC + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if ((tvb_get_ntohl(tvb, offset + IP6H_SRC + 8) & 0xfcffffff) == 0x00005efe) { /* RFC 5214 section 6.1 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_isatap_ipv4, tvb,
offset + IP6H_SRC + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_isatap_ipv4, tvb,
offset + IP6H_SRC + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
/* Add different items for the destination address */
proto_tree_add_item(ipv6_tree, hf_ipv6_dst, tvb,
offset + IP6H_DST, 16, ENC_NA);
ti = proto_tree_add_ipv6(ipv6_tree, hf_ipv6_addr, tvb,
offset + IP6H_DST,
16, &ipv6->ip6_dst);
PROTO_ITEM_SET_HIDDEN(ti);
name = address_to_display(wmem_packet_scope(), &pinfo->dst);
if (ipv6_summary_in_tree) {
set_address(&addr, AT_IPv6, 16, ipv6->ip6_dst.bytes);
proto_item_append_text(ipv6_item, ", Dst: %s", address_with_resolution_to_str(wmem_packet_scope(), &addr));
}
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_dst_host, tvb,
offset + IP6H_DST,
16, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_host, tvb,
offset + IP6H_DST,
16, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
/* Extract embedded (IPv6 and MAC) address information */
if (tvb_get_ntohs(tvb, offset + IP6H_DST) == 0x2002) { /* RFC 3056 section 2 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_6to4_gateway_ipv4, tvb,
offset + IP6H_DST + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_6to4_sla_id, tvb,
offset + IP6H_DST + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_gateway_ipv4, tvb,
offset + IP6H_DST + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_sla_id, tvb,
offset + IP6H_DST + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if (tvb_get_ntohl(tvb, offset + IP6H_DST) == 0x20010000) { /* RFC 4380 section 4 */
guint16 mapped_port = tvb_get_ntohs(tvb, offset + IP6H_DST + 10) ^ 0xffff;
guint32 client_v4 = tvb_get_ipv4(tvb, offset + IP6H_DST + 12) ^ 0xffffffff;
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_teredo_server_ipv4, tvb,
offset + IP6H_DST + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_dst_teredo_port, tvb,
offset + IP6H_DST + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_dst_teredo_client_ipv4, tvb,
offset + IP6H_DST + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_teredo_server_ipv4, tvb,
offset + IP6H_DST + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_teredo_port, tvb,
offset + IP6H_DST + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_teredo_client_ipv4, tvb,
offset + IP6H_DST + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
if (tvb_get_guint8(tvb, offset + IP6H_DST + 8) & 0x02 && tvb_get_ntohs(tvb, offset + IP6H_DST + 11) == 0xfffe) { /* RFC 4291 appendix A */
mac_addr = (guint8 *)wmem_alloc(wmem_packet_scope(), 6);
tvb_memcpy(tvb, mac_addr, offset + IP6H_DST + 8, 3);
tvb_memcpy(tvb, mac_addr+3, offset+ IP6H_DST + 13, 3);
mac_addr[0] &= ~0x02;
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_dst_sa_mac, tvb,
offset + IP6H_DST + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_sa_mac, tvb,
offset + IP6H_DST + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if ((tvb_get_ntohl(tvb, offset + IP6H_DST + 8) & 0xfcffffff) == 0x00005efe) { /* RFC 5214 section 6.1 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_isatap_ipv4, tvb,
offset + IP6H_DST + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_isatap_ipv4, tvb,
offset + IP6H_DST + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
}
#ifdef HAVE_GEOIP_V6
if (tree && ipv6_use_geoip) {
add_geoip_info(ipv6_tree, tvb, offset, &ipv6->ip6_src, &ipv6->ip6_dst);
}
#endif
/* Fill in IPv4 fields for potential subdissectors */
iph.ip_v_hl = (tvb_get_guint8(tvb, offset + IP6H_CTL_VFC) >> 4) & 0x0F;
iph.ip_tos = (guint8)((tvb_get_ntohl(tvb, offset + IP6H_CTL_FLOW) >> 20) & 0xFF);
iph.ip_len = tvb_get_ntohs(tvb, offset + IP6H_CTL_PLEN);
/* Yes, there is not TTL in IPv6 Header... but it is the same of Hop Limit...*/
iph.ip_ttl = tvb_get_guint8(tvb, offset + IP6H_CTL_HLIM);
if (ipv6_exthdr_under_root) {
ipv6_exthdr_tree = tree;
} else {
ipv6_exthdr_tree = ipv6_tree;
}
/* start of the new header (could be a extension header) */
nxt = tvb_get_guint8(tvb, offset + 6);
/* Save next header value for Decode As dialog */
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR, GUINT_TO_POINTER((guint)nxt));
offset += (int)sizeof(struct ip6_hdr);
advance = 0;
if (nxt == IP_PROTO_HOPOPTS) {
options_tvb = tvb_new_subset_remaining(tvb, offset);
advance = dissect_hopopts(options_tvb, pinfo, ipv6_exthdr_tree, &iph);
if (advance > 0) {
nxt = tvb_get_guint8(tvb, offset);
offset += advance;
if (ipv6_info->jumbogram) {
if (ti_ipv6_plen) {
proto_item_append_text(ti_ipv6_plen, " (Jumbogram)");
}
plen = ipv6_info->jumbo_length;
if (plen == 0) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Bogus IPv6 jumbo length");
return tvb_captured_length(tvb);
}
} else if (plen == 0) {
/* IPv6 length zero is invalid if there is a hop-by-hop header without jumbo option */
col_add_fstr(pinfo->cinfo, COL_INFO, "Invalid IPv6 payload length");
if (ti_ipv6_plen) {
expert_add_info(pinfo, ti_ipv6_plen, &ei_ipv6_opt_jumbo_missing);
}
return tvb_captured_length(tvb);
} else if (plen < (guint32)advance) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Bogus IPv6 payload length");
if (ti_ipv6_plen) {
proto_item_append_text(ti_ipv6_plen, " (Bogus, less than hop-by-hop extension header length)");
expert_add_info(pinfo, ti_ipv6_plen, &ei_ipv6_bogus_ipv6_length);
}
return tvb_captured_length(tvb);
}
}
}
if (plen == (guint32)advance && nxt != IP_PROTO_NONE) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Bogus IPv6 payload length");
if (ti_ipv6_plen) {
proto_item_append_text(ti_ipv6_plen, " (Bogus, next header is %s)", ipprotostr(nxt));
expert_add_info(pinfo, ti_ipv6_plen, &ei_ipv6_bogus_ipv6_length);
}
return tvb_captured_length(tvb);
}
if (plen > (tvb_reported_length(tvb) - 40)) {
expert_add_info_format(pinfo, ti_ipv6_plen, &ei_ipv6_bogus_payload_length,
"IPv6 payload length exceeds framing length (%d bytes)",
tvb_reported_length(tvb) - 40);
}
/* Adjust the length of this tvbuff to include only the IPv6 datagram. */
set_actual_length(tvb, plen + (guint)sizeof (struct ip6_hdr));
plen -= advance;
save_fragmented = pinfo->fragmented;
again:
/* Get a tvbuff for the options. */
options_tvb = tvb_new_subset_remaining(tvb, offset);
nxt_handle = dissector_get_uint_handle(ipv6_next_header_dissector_table, nxt);
if ((nxt_handle) &&
((advance = call_dissector_with_data(nxt_handle, options_tvb, pinfo, ipv6_exthdr_tree, &iph)) > 0)) {
nxt = tvb_get_guint8(tvb, offset);
offset += advance;
plen -= advance;
goto again;
} else {
switch (nxt) {
case IP_PROTO_FRAGMENT:
advance = dissect_frag6(tvb, offset, pinfo, ipv6_exthdr_tree,
&frag_off, &frag_flg, &frag_ident);
nxt = tvb_get_guint8(tvb, offset);
offset += advance;
plen -= advance;
if ((frag_off == 0) && !frag_flg) {
goto again;
}
pinfo->fragmented = TRUE;
if (ipv6_reassemble) {
/* reassembling */
if (tvb_bytes_exist(tvb, offset, plen)) {
ipfd_head = fragment_add_check(&ipv6_reassembly_table,
tvb, offset, pinfo, frag_ident, NULL,
frag_off, plen, frag_flg);
next_tvb = process_reassembled_data(tvb, offset, pinfo, "Reassembled IPv6",
ipfd_head, &ipv6_frag_items, &update_col_info, ipv6_tree);
if (next_tvb) { /* Process post-fragment headers after reassembly... */
offset = 0;
tvb = next_tvb;
pinfo->fragmented = FALSE;
goto again;
}
}
}
else {
/* not reassembling */
if (frag_off == 0) /* ... or in the first fragment */
goto again;
}
show_data = TRUE;
break;
case IP_PROTO_NONE:
col_set_str(pinfo->cinfo, COL_INFO, "IPv6 no next header");
show_data = TRUE;
break;
default:
if ((ipv6extprotostr(nxt) != NULL) &&
!dissector_get_uint_handle(ip_dissector_table, nxt)) {
advance = dissect_unknown_exthdr(tvb, offset, ipv6_exthdr_tree);
nxt = tvb_get_guint8(tvb, offset);
offset += advance;
plen -= advance;
ipv6_info->exthdr_count++;
goto again;
}
}
}
if (!ipv6_exthdr_under_root) {
proto_item_set_len (ipv6_item, offset);
}
iph.ip_p = nxt;
/* collect packet info */
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE, GUINT_TO_POINTER((guint)nxt));
tap_queue_packet(ipv6_tap, pinfo, ipv6);
/* Get a tvbuff for the payload. */
next_tvb = tvb_new_subset_remaining(tvb, offset);
if (show_data) {
/* COL_INFO already set */
call_dissector(data_handle, next_tvb, pinfo, tree);
}
else {
/* First fragment and not reassembling, not fragmented, or already reassembled. */
/* Dissect what we have here. */
if (!ip_try_dissect(try_heuristic_first, next_tvb, pinfo, tree, &iph)) {
/* Unknown protocol. */
col_add_fstr(pinfo->cinfo, COL_INFO, "%s (%u)", ipprotostr(nxt), nxt);
call_dissector(data_handle, next_tvb, pinfo, tree);
}
}
pinfo->fragmented = save_fragmented;
return tvb_captured_length(tvb);
}
void
proto_register_ipv6(void)
{
static hf_register_info hf_ipv6[] = {
{ &hf_ipv6_version,
{ "Version", "ipv6.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL }
},
{ &hf_ip_version,
{ "Version", "ip.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL }
},
{ &hf_ipv6_tclass,
{ "Traffic class", "ipv6.tclass",
FT_UINT32, BASE_HEX, NULL, 0x0FF00000,
NULL, HFILL }
},
{ &hf_ipv6_tclass_dscp,
{ "Differentiated Services Codepoint", "ipv6.tclass.dscp",
FT_UINT32, BASE_DEC | BASE_EXT_STRING, &dscp_vals_ext, 0x0FC00000,
NULL, HFILL }
},
{ &hf_ipv6_tclass_ecn,
{ "Explicit Congestion Notification", "ipv6.tclass.ecn",
FT_UINT32, BASE_DEC | BASE_EXT_STRING, &ecn_vals_ext, 0x00300000,
NULL, HFILL }
},
{ &hf_ipv6_flow,
{ "Flow label", "ipv6.flow",
FT_UINT32, BASE_HEX, NULL, 0x000FFFFF,
NULL, HFILL }
},
{ &hf_ipv6_plen,
{ "Payload length", "ipv6.plen",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_nxt,
{ "Next header", "ipv6.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_hlim,
{ "Hop limit", "ipv6.hlim",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_src,
{ "Source", "ipv6.src",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Source IPv6 Address", HFILL }
},
{ &hf_ipv6_src_host,
{ "Source Host", "ipv6.src_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Source IPv6 Host", HFILL }
},
{ &hf_ipv6_src_sa_mac,
{ "Source SA MAC", "ipv6.src_sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Source IPv6 Stateless Autoconfiguration MAC Address", HFILL }
},
{ &hf_ipv6_src_isatap_ipv4,
{ "Source ISATAP IPv4", "ipv6.src_isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_src_6to4_gateway_ipv4,
{ "Source 6to4 Gateway IPv4", "ipv6.src_6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_src_6to4_sla_id,
{ "Source 6to4 SLA ID", "ipv6.src_6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Source IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_src_teredo_server_ipv4,
{ "Source Teredo Server IPv4", "ipv6.src_ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_src_teredo_port,
{ "Source Teredo Port", "ipv6.src_tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Source IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_src_teredo_client_ipv4,
{ "Source Teredo Client IPv4", "ipv6.src_tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst,
{ "Destination", "ipv6.dst",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Destination IPv6 Address", HFILL }
},
{ &hf_ipv6_dst_host,
{ "Destination Host", "ipv6.dst_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Destination IPv6 Host", HFILL }
},
{ &hf_ipv6_dst_sa_mac,
{ "Destination SA MAC", "ipv6.dst_sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Destination IPv6 Stateless Autoconfiguration MAC Address", HFILL }
},
{ &hf_ipv6_dst_isatap_ipv4,
{ "Destination ISATAP IPv4", "ipv6.dst_isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_6to4_gateway_ipv4,
{ "Destination 6to4 Gateway IPv4", "ipv6.dst_6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_6to4_sla_id,
{ "Destination 6to4 SLA ID", "ipv6.dst_6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Destination IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_dst_teredo_server_ipv4,
{ "Destination Teredo Server IPv4", "ipv6.dst_ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_teredo_port,
{ "Destination Teredo Port", "ipv6.dst_tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Destination IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_dst_teredo_client_ipv4,
{ "Destination Teredo Client IPv4", "ipv6.dst_tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_addr,
{ "Source or Destination Address", "ipv6.addr",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_host,
{ "Source or Destination Host", "ipv6.host",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_sa_mac,
{ "SA MAC", "ipv6.sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"IPv6 Stateless Autoconfiguration MAC Address", HFILL }
},
{ &hf_ipv6_isatap_ipv4,
{ "ISATAP IPv4", "ipv6.isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_6to4_gateway_ipv4,
{ "6to4 Gateway IPv4", "ipv6.6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_6to4_sla_id,
{ "6to4 SLA ID", "ipv6.6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_teredo_server_ipv4,
{ "Teredo Server IPv4", "ipv6.ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_teredo_port,
{ "Teredo Port", "ipv6.tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_teredo_client_ipv4,
{ "Teredo Client IPv4", "ipv6.tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
#ifdef HAVE_GEOIP_V6
{ &hf_geoip_country,
{ "Source or Destination GeoIP Country", "ipv6.geoip.country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_city,
{ "Source or Destination GeoIP City", "ipv6.geoip.city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_org,
{ "Source or Destination GeoIP Organization", "ipv6.geoip.org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_isp,
{ "Source or Destination GeoIP ISP", "ipv6.geoip.isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_asnum,
{ "Source or Destination GeoIP AS Number", "ipv6.geoip.asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_lat,
{ "Source or Destination GeoIP Latitude", "ipv6.geoip.lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_lon,
{ "Source or Destination GeoIP Longitude", "ipv6.geoip.lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_country,
{ "Source GeoIP Country", "ipv6.geoip.src_country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_city,
{ "Source GeoIP City", "ipv6.geoip.src_city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_org,
{ "Source GeoIP Organization", "ipv6.geoip.src_org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_isp,
{ "Source GeoIP ISP", "ipv6.geoip.src_isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_asnum,
{ "Source GeoIP AS Number", "ipv6.geoip.src_asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_lat,
{ "Source GeoIP Latitude", "ipv6.geoip.src_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_lon,
{ "Source GeoIP Longitude", "ipv6.geoip.src_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_country,
{ "Destination GeoIP Country", "ipv6.geoip.dst_country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_city,
{ "Destination GeoIP City", "ipv6.geoip.dst_city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_org,
{ "Destination GeoIP Organization", "ipv6.geoip.dst_org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_isp,
{ "Destination GeoIP ISP", "ipv6.geoip.dst_isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_asnum,
{ "Destination GeoIP AS Number", "ipv6.geoip.dst_asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_lat,
{ "Destination GeoIP Latitude", "ipv6.geoip.dst_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_lon,
{ "Destination GeoIP Longitude", "ipv6.geoip.dst_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
#endif /* HAVE_GEOIP_V6 */
{ &hf_ipv6_unknown_hdr,
{ "Unknown Extension Header", "ipv6.unknown_hdr",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_unknown_hdr_nxt,
{ "Next Header", "ipv6.unknown_hdr.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_unknown_hdr_length,
{ "Length", "ipv6.unknown_hdr.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension Header Length", HFILL }
},
{ &hf_ipv6_opt,
{ "IPv6 Option", "ipv6.opt",
FT_NONE, BASE_NONE, NULL, 0x0,
"Option", HFILL }
},
{ &hf_ipv6_opt_type,
{ "Type", "ipv6.opt.type",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipv6_opt_vals_ext, 0x0,
"Option type", HFILL }
},
{ &hf_ipv6_opt_length,
{ "Length", "ipv6.opt.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Option length in octets", HFILL }
},
{ &hf_ipv6_opt_pad1,
{ "Pad1", "ipv6.opt.pad1",
FT_NONE, BASE_NONE, NULL, 0x0,
"Pad1 Option", HFILL }
},
{ &hf_ipv6_opt_padn,
{ "PadN", "ipv6.opt.padn",
FT_BYTES, BASE_NONE|BASE_ALLOW_ZERO, NULL, 0x0,
"PadN Option", HFILL }
},
{ &hf_ipv6_opt_rtalert,
{ "Router Alert", "ipv6.opt.router_alert",
FT_UINT16, BASE_DEC, VALS(rtalertvals), 0x0,
"Router Alert Option", HFILL }
},
{ &hf_ipv6_opt_tel,
{ "Tunnel Encapsulation Limit", "ipv6.opt.tel",
FT_UINT8, BASE_DEC, NULL, 0x0,
"How many further levels of encapsulation are permitted", HFILL }
},
{ &hf_ipv6_opt_jumbo,
{ "Payload Length", "ipv6.opt.jumbo",
FT_UINT32, BASE_DEC, NULL, 0x0,
"IPv6 (Jumbo) Payload Length", HFILL }
},
{ &hf_ipv6_opt_calipso_doi,
{ "CALIPSO Domain of Interpretation", "ipv6.opt.calipso.doi",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_cmpt_length,
{ "Compartment Length", "ipv6.opt.calipso.cmpt.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_sens_level,
{ "Sensitivity Level", "ipv6.opt.calipso.sens_level",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_checksum,
{ "Checksum", "ipv6.opt.calipso.checksum",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_cmpt_bitmap,
{ "Compartment Bitmap", "ipv6.opt.calipso.cmpt_bitmap",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_func,
{ "Function", "ipv6.opt.qs_func",
FT_UINT8, BASE_DEC, VALS(qs_func_vals), QS_FUNC_MASK,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_rate,
{ "Rate", "ipv6.opt.qs_rate",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &qs_rate_vals_ext, QS_RATE_MASK,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_ttl,
{ "QS TTL", "ipv6.opt.qs_ttl",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_ttl_diff,
{ "TTL Diff", "ipv6.opt.qs_ttl_diff",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_unused,
{ "Not Used", "ipv6.opt.qs_unused",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_nonce,
{ "QS Nonce", "ipv6.opt.qs_nonce",
FT_UINT32, BASE_HEX, NULL, 0xFFFFFFFC,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_reserved,
{ "Reserved", "ipv6.opt.qs_reserved",
FT_UINT32, BASE_HEX, NULL, 0x0003,
NULL, HFILL }
},
{ &hf_ipv6_opt_mipv6_home_address,
{ "MIPv6 Home Address", "ipv6.opt.mipv6.home_address",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_rpl_flag,
{ "Flag", "ipv6.opt.rpl.flag",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_rpl_flag_o,
{ "Down", "ipv6.opt.rpl.flag.o",
FT_BOOLEAN, 8, NULL, 0x80,
"The packet is expected to progress Up or Down", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_r,
{ "Rank Error", "ipv6.opt.rpl.flag.r",
FT_BOOLEAN, 8, NULL, 0x40,
"Whether a rank error was detected", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_f,
{ "Forwarding Error", "ipv6.opt.rpl.flag.f",
FT_BOOLEAN, 8, NULL, 0x20,
"Set if the node cannot forward the packet further towards the destination", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_rsv,
{ "Reserved", "ipv6.opt.rpl.flag.rsv",
FT_UINT8, BASE_HEX, NULL, 0x1F,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_rpl_instance_id,
{ "RPLInstanceID", "ipv6.opt.rpl.instance_id",
FT_UINT8, BASE_HEX, NULL, 0x0,
"The DODAG instance along which the packet is sent", HFILL }
},
{ &hf_ipv6_opt_rpl_senderrank,
{ "Sender Rank", "ipv6.opt.rpl.sender_rank",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Set to zero by the source and to DAGRank(rank) by a router that forwards inside the RPL network", HFILL }
},
{ &hf_ipv6_opt_mpl_flag,
{ "Flag", "ipv6.opt.mpl.flag",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_mpl_flag_s,
{ "Seed ID Length", "ipv6.opt.mpl.flag.s",
FT_UINT8, BASE_DEC, NULL, 0xC0,
"Identifies the length of Seed ID", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_m,
{ "Largest Sequence", "ipv6.opt.mpl.flag.m",
FT_BOOLEAN, 8, NULL, 0x20,
"Indicates Sequence is known to be the largest sequence number", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_v,
{ "Version", "ipv6.opt.mpl.flag.v",
FT_BOOLEAN, 8, NULL, 0x10,
"0 indicates this option conforms to RFC<TBC>", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_rsv,
{ "Reserved", "ipv6.opt.mpl.flag.rsv",
FT_UINT8, BASE_HEX, NULL, 0x0F,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_mpl_sequence,
{ "Sequence", "ipv6.opt.mpl.sequence",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Identifies relative ordering of MPL Data Messages from the MPL Seed identified by Seed ID", HFILL }
},
{ &hf_ipv6_opt_mpl_seed_id,
{ "Seed ID", "ipv6.opt.mpl.seed_id",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Uniquely identifies the MPL Seed that initiated dissemination of the MPL Data Message", HFILL }
},
{ &hf_ipv6_opt_experimental,
{ "Experimental Option", "ipv6.opt.experimental",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_unknown_data,
{ "Unknown Data", "ipv6.opt_unknown_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Not interpreted data", HFILL }
},
{ &hf_ipv6_opt_unknown,
{ "Unknown Option Payload", "ipv6.opt.unknown",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragment,
{ "IPv6 Fragment", "ipv6.fragment",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragment_overlap,
{ "Fragment overlap", "ipv6.fragment.overlap",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Fragment overlaps with other fragments", HFILL }
},
{ &hf_ipv6_fragment_overlap_conflict,
{ "Conflicting data in fragment overlap", "ipv6.fragment.overlap.conflict",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Overlapping fragments contained conflicting data", HFILL }
},
{ &hf_ipv6_fragment_multiple_tails,
{ "Multiple tail fragments found", "ipv6.fragment.multipletails",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Several tails were found when defragmenting the packet", HFILL }
},
{ &hf_ipv6_fragment_too_long_fragment,
{ "Fragment too long", "ipv6.fragment.toolongfragment",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Fragment contained data past end of packet", HFILL }
},
{ &hf_ipv6_fragment_error,
{ "Defragmentation error", "ipv6.fragment.error",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
"Defragmentation error due to illegal fragments", HFILL }
},
{ &hf_ipv6_fragment_count,
{ "Fragment count", "ipv6.fragment.count",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragments,
{ "IPv6 Fragments", "ipv6.fragments",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_reassembled_in,
{ "Reassembled IPv6 in frame", "ipv6.reassembled.in",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
"This IPv6 packet is reassembled in this frame", HFILL }
},
{ &hf_ipv6_reassembled_length,
{ "Reassembled IPv6 length", "ipv6.reassembled.length",
FT_UINT32, BASE_DEC, NULL, 0x0,
"The total length of the reassembled payload", HFILL }
},
{ &hf_ipv6_reassembled_data,
{ "Reassembled IPv6 data", "ipv6.reassembled.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"The reassembled payload", HFILL }
},
{ &hf_ipv6_padding,
{ "Padding", "ipv6.padding",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
}
};
static hf_register_info hf_ipv6_hopopts[] = {
{ &hf_ipv6_hopopts_nxt,
{ "Next Header", "ipv6.hopopts.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_hopopts_length,
{ "Length", "ipv6.hopopts.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension Header Length", HFILL }
}
};
static hf_register_info hf_ipv6_routing[] = {
/* IPv6 Routing Header */
{ &hf_ipv6_routing_nxt,
{ "Next Header", "ipv6.routing.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_routing_length,
{ "Length", "ipv6.routing.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension Header Length", HFILL }
},
{ &hf_ipv6_routing_type,
{ "Type", "ipv6.routing.type",
FT_UINT8, BASE_DEC, VALS(routing_header_type), 0x0,
"Routing Header Type", HFILL }
},
{ &hf_ipv6_routing_segleft,
{ "Segments Left", "ipv6.routing.segleft",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Routing Header Segments Left", HFILL }
},
/* Source Routing Header */
{ &hf_ipv6_routing_src_reserved,
{ "Reserved", "ipv6.routing.src.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_src_addr,
{ "Address", "ipv6.routing.src.addr",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Source Routing Header Address", HFILL }},
/* Mobile IPv6 */
{ &hf_ipv6_routing_mipv6_reserved,
{ "Reserved", "ipv6.routing.mipv6.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_mipv6_home_address,
{ "Home Address", "ipv6.routing.mipv6.home_address",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
/* RPL Routing Header */
{ &hf_ipv6_routing_rpl_cmprI,
{ "Compressed Internal Octets (CmprI)", "ipv6.routing.rpl.cmprI",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_CMPRI,
"Elided octets from all but last segment", HFILL }
},
{ &hf_ipv6_routing_rpl_cmprE,
{ "Compressed Final Octets (CmprE)", "ipv6.routing.rpl.cmprE",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_CMPRE,
"Elided octets from last segment address", HFILL }
},
{ &hf_ipv6_routing_rpl_pad,
{ "Padding Bytes", "ipv6.routing.rpl.pad",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_PAD,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_reserved,
{ "Reserved", "ipv6.routing.rpl.reserved",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_RESERVED,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_rpl_addr_count,
{ "Total Address Count", "ipv6.routing.rpl.addr_count",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_addr,
{ "Address", "ipv6.routing.rpl.address",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_fulladdr,
{ "Full Address", "ipv6.routing.rpl.full_address",
FT_IPv6, BASE_NONE, NULL, 0,
"Uncompressed IPv6 Address", HFILL }
},
};
static hf_register_info hf_ipv6_fraghdr[] = {
{ &hf_ipv6_fraghdr_nxt,
{ "Next header", "ipv6.fraghdr.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_reserved_octet,
{ "Reserved octet", "ipv6.fraghdr.reserved_octet",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Should always be 0", HFILL }
},
{ &hf_ipv6_fraghdr_offset,
{ "Offset", "ipv6.fraghdr.offset",
FT_UINT16, BASE_DEC, NULL, IP6F_OFF_MASK,
"Fragment Offset", HFILL }
},
{ &hf_ipv6_fraghdr_reserved_bits,
{ "Reserved bits", "ipv6.fraghdr.reserved_bits",
FT_UINT16, BASE_DEC, NULL, IP6F_RESERVED_MASK,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_more,
{ "More Fragments", "ipv6.fraghdr.more",
FT_BOOLEAN, 16, TFS(&tfs_yes_no), IP6F_MORE_FRAG,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_ident,
{ "Identification", "ipv6.fraghdr.ident",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Fragment Identification", HFILL }
}
};
static hf_register_info hf_ipv6_shim6[] = {
{ &hf_ipv6_shim6_nxt,
{ "Next Header", "ipv6.shim6.nxt",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_len,
{ "Length", "ipv6.shim6.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension Header Length", HFILL }
},
{ &hf_ipv6_shim6_p,
{ "P Bit", "ipv6.shim6.p",
FT_BOOLEAN, 8, NULL, SHIM6_BITMASK_P,
NULL, HFILL }
},
{ &hf_ipv6_shim6_ct,
{ "Context Tag", "ipv6.shim6.ct",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_type,
{ "Message Type", "ipv6.shim6.type",
FT_UINT8, BASE_DEC, VALS(shimctrlvals), SHIM6_BITMASK_TYPE,
NULL, HFILL }
},
{ &hf_ipv6_shim6_proto,
{ "Protocol", "ipv6.shim6.proto",
FT_UINT8, BASE_DEC, VALS(shim6_protocol), SHIM6_BITMASK_PROTOCOL,
NULL, HFILL }
},
{ &hf_ipv6_shim6_checksum,
{ "Checksum", "ipv6.shim6.checksum",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Shim6 Checksum", HFILL }
},
{ &hf_ipv6_shim6_checksum_bad,
{ "Bad Checksum", "ipv6.shim6.checksum_bad",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Shim6 Bad Checksum", HFILL }
},
{ &hf_ipv6_shim6_checksum_good,
{ "Good Checksum", "ipv6.shim6.checksum_good",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_inonce,
{ "Initiator Nonce", "ipv6.shim6.inonce",
FT_UINT32, BASE_DEC_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_rnonce,
{ "Responder Nonce", "ipv6.shim6.rnonce",
FT_UINT32, BASE_DEC_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_reserved,
{ "Reserved", "ipv6.shim6.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_reserved2,
{ "Reserved2", "ipv6.shim6.reserved2",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_precvd,
{ "Probes Received", "ipv6.shim6.precvd",
FT_UINT8, BASE_DEC, NULL, SHIM6_BITMASK_PRECVD,
NULL, HFILL }
},
{ &hf_ipv6_shim6_psent,
{ "Probes Sent", "ipv6.shim6.psent",
FT_UINT8, BASE_DEC, NULL, SHIM6_BITMASK_PSENT,
NULL, HFILL }
},
{ &hf_ipv6_shim6_psrc,
{ "Source Address", "ipv6.shim6.psrc",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Shim6 Probe Source Address", HFILL }
},
{ &hf_ipv6_shim6_pdst,
{ "Destination Address", "ipv6.shim6.pdst",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Shim6 Probe Destination Address", HFILL }
},
{ &hf_ipv6_shim6_pnonce,
{ "Nonce", "ipv6.shim6.pnonce",
FT_UINT32, BASE_DEC_HEX, NULL, 0x0,
"Shim6 Probe Nonce", HFILL }
},
{ &hf_ipv6_shim6_pdata,
{ "Data", "ipv6.shim6.pdata",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Shim6 Probe Data", HFILL }
},
{ &hf_ipv6_shim6_sulid,
{ "Sender ULID", "ipv6.shim6.sulid",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Shim6 Sender ULID", HFILL }
},
{ &hf_ipv6_shim6_rulid,
{ "Receiver ULID", "ipv6.shim6.rulid",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Shim6 Receiver ULID", HFILL }
},
{ &hf_ipv6_shim6_reap,
{ "REAP State", "ipv6.shim6.reap",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_opt_type,
{ "Option Type", "ipv6.shim6.opt.type",
FT_UINT16, BASE_DEC, VALS(shimoptvals), SHIM6_BITMASK_OPT_TYPE,
"Shim6 Option Type", HFILL }
},
{ &hf_ipv6_shim6_opt_critical,
{ "Option Critical Bit", "ipv6.shim6.opt.critical",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), SHIM6_BITMASK_CRITICAL,
"TRUE: option is critical, FALSE: option is not critical", HFILL }
},
{ &hf_ipv6_shim6_opt_len,
{ "Content Length", "ipv6.shim6.opt.len",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Content Length Option", HFILL }
},
{ &hf_ipv6_shim6_opt_total_len,
{ "Total Length", "ipv6.shim6.opt.total_len",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Total Option Length", HFILL }
},
{ &hf_ipv6_shim6_opt_loc_verif_methods,
{ "Verification Method", "ipv6.shim6.opt.verif_method",
FT_UINT8, BASE_DEC, VALS(shimverifmethods), 0x0,
"Locator Verification Method", HFILL }
},
{ &hf_ipv6_shim6_opt_loclist,
{ "Locator List Generation", "ipv6.shim6.opt.loclist",
FT_UINT32, BASE_DEC_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_locator,
{ "Locator", "ipv6.shim6.locator",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Shim6 Locator", HFILL }
},
{ &hf_ipv6_shim6_opt_locnum,
{ "Num Locators", "ipv6.shim6.opt.locnum",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of locators in Locator List", HFILL }
},
{ &hf_ipv6_shim6_opt_elemlen,
{ "Element Length", "ipv6.shim6.opt.elemlen",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Length of Elements in Locator Preferences Option", HFILL }
},
{ &hf_ipv6_shim6_loc_flag,
{ "Flags", "ipv6.shim6.loc.flags",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Locator Preferences Flags", HFILL }
},
{ &hf_ipv6_shim6_loc_prio,
{ "Priority", "ipv6.shim6.loc.prio",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Locator Preferences Priority", HFILL }
},
{ &hf_ipv6_shim6_loc_weight,
{ "Weight", "ipv6.shim6.loc.weight",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Locator Preferences Weight", HFILL }
},
{ &hf_ipv6_shim6_opt_fii,
{ "Forked Instance Identifier", "ipv6.shim6.opt.fii",
FT_UINT32, BASE_DEC_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_validator,
{ "Validator", "ipv6.shim6.validator",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_cga_parameter_data_structure,
{ "CGA Parameter Data Structure", "ipv6.shim6.cga_parameter_data_structure",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_shim6_cga_signature,
{ "CGA Signature", "ipv6.shim6.cga_signature",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
}
};
static hf_register_info hf_ipv6_dstopts[] = {
{ &hf_ipv6_dstopts_nxt,
{ "Next Header", "ipv6.dstopts.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_dstopts_length,
{ "Length", "ipv6.dstopts.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension Header Length", HFILL }
}
};
static gint *ett[] = {
&ett_ipv6,
&ett_ipv6_opt,
&ett_ipv6_opt_rpl,
&ett_ipv6_opt_mpl,
&ett_ipv6_fraghdr,
&ett_ipv6_routing,
&ett_ipv6_shim6,
&ett_ipv6_shim6_option,
&ett_ipv6_shim6_locators,
&ett_ipv6_shim6_verif_methods,
&ett_ipv6_shim6_loc_pref,
&ett_ipv6_shim6_probes_sent,
&ett_ipv6_shim6_probes_rcvd,
&ett_ipv6_shim6_probe_sent,
&ett_ipv6_shim6_probe_rcvd,
&ett_ipv6_shim6_cksum,
&ett_ipv6_fragment,
&ett_ipv6_fragments,
&ett_ipv6_traffic_class,
#ifdef HAVE_GEOIP_V6
&ett_geoip_info
#endif /* HAVE_GEOIP_V6 */
};
static ei_register_info ei[] = {
{ &ei_ipv6_dst_addr_not_multicast,
{ "ipv6.dst_addr.not_multicast", PI_PROTOCOL, PI_WARN,
"Destination address must not be a multicast address", EXPFILL }
},
{ &ei_ipv6_src_route_list_mult_inst_same_addr,
{ "ipv6.src_route_list.mult_inst_same_addr", PI_PROTOCOL, PI_ERROR,
"Multiple instances of the same address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_src_addr,
{ "ipv6.src_route_list.src_addr", PI_PROTOCOL, PI_ERROR,
"Source address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_dst_addr,
{ "ipv6.src_route_list.dst_addr", PI_PROTOCOL, PI_ERROR,
"Destination address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_multicast_addr,
{ "ipv6.src_route_list.multicast_addr", PI_PROTOCOL, PI_ERROR,
"Multicast addresses must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_routing_rpl_cmpri_cmpre_pad,
{ "ipv6.routing.rpl.cmprI_cmprE_pad", PI_PROTOCOL, PI_WARN,
"When cmprI equals 0 and cmprE equals 0, pad MUST equal 0 but instead was X", EXPFILL }
},
{ &ei_ipv6_routing_rpl_addr_count_ge0,
{ "ipv6.routing.rpl.addr_count_ge0", PI_MALFORMED, PI_ERROR,
"Calculated total address count must be greater than or equal to 0, instead was X", EXPFILL }
},
{ &ei_ipv6_routing_rpl_reserved,
{ "ipv6.routing.rpl.reserved_not0", PI_PROTOCOL, PI_WARN,
"Reserved field must equal 0 but instead was X", EXPFILL }
},
{ &ei_ipv6_opt_tel_invalid_len,
{ "ipv6.opt.tel.invalid_len", PI_MALFORMED, PI_ERROR,
"Tunnel Encapsulation Limit: Invalid length", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_invalid_len,
{ "ipv6.opt.jumbo.invalid_len", PI_MALFORMED, PI_ERROR,
"Jumbo Payload: Invalid length", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_missing,
{ "ipv6.opt.jumbo.missing", PI_PROTOCOL, PI_ERROR,
"IPv6 payload length equals 0 and Hop-By-Hop present and Jumbo Payload option missing", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_prohibited,
{ "ipv6.opt.jumbo.prohibited", PI_PROTOCOL, PI_ERROR,
"When IPv6 payload length does not equal 0 a Jumbo Payload option must not be present", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_truncated,
{ "ipv6.opt.jumbo.truncated", PI_PROTOCOL, PI_ERROR,
"Jumbo Payload option present and jumbo length < 65536", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_fragment,
{ "ipv6.opt.jumbo.fragment", PI_PROTOCOL, PI_ERROR,
"Jumbo Payload option cannot be used with a fragment header", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_not_hopbyhop,
{ "ipv6.opt.jumbo.not_hopbyhop", PI_PROTOCOL, PI_ERROR,
"Jumbo Payload option must be a hop-by-hop option", EXPFILL }
},
{ &ei_ipv6_opt_rtalert_invalid_len,
{ "ipv6.opt.router_alert.invalid_len", PI_MALFORMED, PI_ERROR,
"Router alert: Invalid Length", EXPFILL }
},
{ &ei_ipv6_opt_unknown_data,
{ "ipv6.opt.unknown_data.expert", PI_UNDECODED, PI_NOTE,
"Unknown Data (not interpreted)", EXPFILL }
},
{ &ei_ipv6_mipv6_home_address_invalid_len,
{ "ipv6.mipv6_home_address.invalid_len", PI_MALFORMED, PI_ERROR,
"Home Address: Invalid length", EXPFILL }
},
{ &ei_ipv6_shim6_opt_elemlen_invalid,
{ "ipv6.shim6.opt.elemlen.invalid", PI_MALFORMED, PI_ERROR,
"Invalid element length", EXPFILL }
},
{ &ei_ipv6_shim6_checksum_bad,
{ "ipv6.shim6.checksum_bad.expert", PI_CHECKSUM, PI_ERROR,
"Bad checksum", EXPFILL }
},
{ &ei_ipv6_hopopts_not_first,
{ "ipv6.hopopts.not_first", PI_PROTOCOL, PI_ERROR,
"IPv6 Hop-by-Hop extension header must appear immediately after IPv6 header", EXPFILL }
},
{ &ei_ipv6_bogus_ipv6_length,
{ "ipv6.bogus_ipv6_length", PI_PROTOCOL, PI_ERROR,
"Bogus IPv6 length", EXPFILL }
},
{ &ei_ipv6_bogus_payload_length,
{ "ipv6.bogus_payload_length", PI_PROTOCOL, PI_WARN,
"IPv6 payload length does not match expected framing length", EXPFILL }
},
{ &ei_ipv6_bogus_ipv6_version,
{ "ipv6.bogus_ipv6_version", PI_PROTOCOL, PI_ERROR,
"Bogus IP version", EXPFILL }
},
{ &ei_ipv6_invalid_header,
{ "ipv6.invalid_header", PI_MALFORMED, PI_ERROR,
"IPv6 header must be exactly 40 bytes", EXPFILL }
},
{ &ei_ipv6_routing_invalid_length,
{ "ipv6.routing.invalid_length", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 Routing header length", EXPFILL }
},
{ &ei_ipv6_routing_invalid_segleft,
{ "ipv6.routing.invalid_segleft", PI_PROTOCOL, PI_ERROR,
"IPv6 Routing Header segments left field must not exceed address count", EXPFILL }
},
};
/* Decode As handling */
static build_valid_func ipv6_da_build_value[1] = {ipv6_value};
static decode_as_value_t ipv6_da_values = {ipv6_prompt, 1, ipv6_da_build_value};
static decode_as_t ipv6_da = {"ipv6", "Network", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static build_valid_func ipv6_next_header_da_build_value[1] = {ipv6_next_header_value};
static decode_as_value_t ipv6_next_header_da_values = {ipv6_next_header_prompt, 1, ipv6_next_header_da_build_value};
static decode_as_t ipv6_next_header_da = {"ipv6", "IPv6 Next Header", "ipv6.nxt", 1, 0, &ipv6_next_header_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
module_t *ipv6_module;
expert_module_t* expert_ipv6;
proto_ipv6 = proto_register_protocol("Internet Protocol Version 6", "IPv6", "ipv6");
proto_register_field_array(proto_ipv6, hf_ipv6, array_length(hf_ipv6));
proto_register_subtree_array(ett, array_length(ett));
expert_ipv6 = expert_register_protocol(proto_ipv6);
expert_register_field_array(expert_ipv6, ei, array_length(ei));
proto_ipv6_hopopts = proto_register_protocol("IPv6 Hop-by-Hop Option", "IPv6 Hop-by-Hop", "ipv6.hopopts");
proto_ipv6_routing = proto_register_protocol("Routing Header for IPv6", "IPv6 Routing", "ipv6.routing");
proto_ipv6_fraghdr = proto_register_protocol("Fragment Header for IPv6", "IPv6 Fragment", "ipv6.fraghdr");
proto_ipv6_shim6 = proto_register_protocol("Shim6 Protocol", "Shim6", "ipv6.shim6");
proto_ipv6_dstopts = proto_register_protocol("Destination Options for IPv6", "IPv6 Destination", "ipv6.dstopts");
proto_register_field_array(proto_ipv6_hopopts, hf_ipv6_hopopts, array_length(hf_ipv6_hopopts));
proto_register_field_array(proto_ipv6_routing, hf_ipv6_routing, array_length(hf_ipv6_routing));
proto_register_field_array(proto_ipv6_fraghdr, hf_ipv6_fraghdr, array_length(hf_ipv6_fraghdr));
proto_register_field_array(proto_ipv6_shim6, hf_ipv6_shim6, array_length(hf_ipv6_shim6));
proto_register_field_array(proto_ipv6_dstopts, hf_ipv6_dstopts, array_length(hf_ipv6_dstopts));
ipv6_next_header_dissector_table = register_dissector_table("ipv6.nxt", "IPv6 Next Header", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
register_capture_dissector_table("ipv6.nxt", "IPv6 Next Header");
/* Register configuration options */
ipv6_module = prefs_register_protocol(proto_ipv6, NULL);
prefs_register_bool_preference(ipv6_module, "defragment",
"Reassemble fragmented IPv6 datagrams",
"Whether fragmented IPv6 datagrams should be reassembled",
&ipv6_reassemble);
prefs_register_bool_preference(ipv6_module, "summary_in_tree",
"Show IPv6 summary in protocol tree",
"Whether the IPv6 summary line should be shown in the protocol tree",
&ipv6_summary_in_tree);
#ifdef HAVE_GEOIP_V6
prefs_register_bool_preference(ipv6_module, "use_geoip" ,
"Enable GeoIP lookups",
"Whether to look up IPv6 addresses in each GeoIP database we have loaded",
&ipv6_use_geoip);
#endif /* HAVE_GEOIP_V6 */
/* RPL Strict Header Checking */
prefs_register_bool_preference(ipv6_module, "perform_strict_rpl_srh_rfc_checking",
"Perform strict checking for adherence to the RFC for RPL Source Routing Headers (RFC 6554)",
"Whether to check that all RPL Source Routing Headers adhere to RFC 6554",
&g_ipv6_rpl_srh_strict_rfc_checking);
prefs_register_bool_preference(ipv6_module, "try_heuristic_first",
"Try heuristic sub-dissectors first",
"Try to decode a packet using an heuristic sub-dissector before using a sub-dissector registered to a specific port",
&try_heuristic_first);
prefs_register_bool_preference(ipv6_module, "exthdr_under_root_protocol_tree",
"Display IPv6 extension headers under the root protocol tree",
"Whether to display IPv6 extension headers as a separate protocol or a sub-protocol of the IPv6 packet",
&ipv6_exthdr_under_root);
register_dissector("ipv6", dissect_ipv6, proto_ipv6);
register_init_routine(ipv6_reassemble_init);
register_cleanup_routine(ipv6_reassemble_cleanup);
ipv6_tap = register_tap("ipv6");
register_decode_as(&ipv6_da);
register_decode_as(&ipv6_next_header_da);
register_conversation_table(proto_ipv6, TRUE, ipv6_conversation_packet, ipv6_hostlist_packet);
register_conversation_filter("ipv6", "IPv6", ipv6_filter_valid, ipv6_build_filter);
}
void
proto_reg_handoff_ipv6(void)
{
dissector_handle_t ipv6_handle;
dissector_handle_t ipv6_hopopts_handle, ipv6_routing_handle,
ipv6_shim6_handle, ipv6_dstopts_handle;
data_handle = find_dissector("data");
ipv6_handle = find_dissector("ipv6");
dissector_add_uint("ethertype", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("erf.types.type", ERF_TYPE_IPV6, ipv6_handle);
dissector_add_uint("ppp.protocol", PPP_IPV6, ipv6_handle);
dissector_add_uint("ppp.protocol", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("gre.proto", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("ip.proto", IP_PROTO_IPV6, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_BSD, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_FREEBSD, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_DARWIN, ipv6_handle);
dissector_add_uint("chdlc.protocol", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("fr.nlpid", NLPID_IP6, ipv6_handle);
dissector_add_uint("osinl.excl", NLPID_IP6, ipv6_handle);
dissector_add_uint("x.25.spi", NLPID_IP6, ipv6_handle);
dissector_add_uint("arcnet.protocol_id", ARCNET_PROTO_IPv6, ipv6_handle);
dissector_add_uint("juniper.proto", JUNIPER_PROTO_IP6, ipv6_handle);
dissector_add_uint("juniper.proto", JUNIPER_PROTO_MPLS_IP6, ipv6_handle);
dissector_add_uint("pwach.channel_type", 0x57, ipv6_handle); /* IPv6, RFC4385 clause 6. */
dissector_add_uint("sflow_245.header_protocol", SFLOW_245_HEADER_IPv6, ipv6_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_RAW_IP6, ipv6_handle);
dissector_add_uint("enc", BSD_AF_INET6_BSD, ipv6_handle);
dissector_add_for_decode_as("udp.port", ipv6_handle);
ipv6_hopopts_handle = create_dissector_handle(dissect_hopopts, proto_ipv6_hopopts );
dissector_add_uint("ipv6.nxt", IP_PROTO_HOPOPTS, ipv6_hopopts_handle);
ipv6_routing_handle = create_dissector_handle(dissect_routing6, proto_ipv6_routing );
dissector_add_uint("ipv6.nxt", IP_PROTO_ROUTING, ipv6_routing_handle);
ipv6_shim6_handle = create_dissector_handle(dissect_shim6, proto_ipv6_shim6 );
dissector_add_uint("ipv6.nxt", IP_PROTO_SHIM6, ipv6_shim6_handle);
ipv6_dstopts_handle = create_dissector_handle(dissect_dstopts, proto_ipv6_dstopts );
dissector_add_uint("ipv6.nxt", IP_PROTO_DSTOPTS, ipv6_dstopts_handle);
ip_dissector_table = find_dissector_table("ip.proto");
register_capture_dissector("ethertype", ETHERTYPE_IPv6, capture_ipv6, proto_ipv6);
register_capture_dissector("enc", BSD_AF_INET6_BSD, capture_ipv6, proto_ipv6);
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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