forked from osmocom/wireshark
1124 lines
36 KiB
C
1124 lines
36 KiB
C
/* packet-ipv6.c
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* Routines for IPv6 packet disassembly
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*
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* $Id: packet-ipv6.c,v 1.87 2002/08/28 21:00:18 jmayer Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@siemens.hr>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <stdio.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include "packet-ip.h"
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#include "packet-ipsec.h"
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#include "packet-ipv6.h"
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#include <epan/resolv.h>
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#include "prefs.h"
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#include "reassemble.h"
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#include "ipproto.h"
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#include "etypes.h"
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#include "ppptypes.h"
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#include "aftypes.h"
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#include "nlpid.h"
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/*
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* NOTE: ipv6.nxt is not very useful as we will have chained header.
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* now testing ipv6.final, but it raises SEGV.
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#define TEST_FINALHDR
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*/
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static int proto_ipv6 = -1;
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static int hf_ipv6_version = -1;
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static int hf_ipv6_class = -1;
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static int hf_ipv6_flow = -1;
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static int hf_ipv6_plen = -1;
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static int hf_ipv6_nxt = -1;
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static int hf_ipv6_hlim = -1;
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static int hf_ipv6_src = -1;
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static int hf_ipv6_dst = -1;
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static int hf_ipv6_addr = -1;
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#ifdef TEST_FINALHDR
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static int hf_ipv6_final = -1;
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#endif
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static int hf_ipv6_fragments = -1;
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static int hf_ipv6_fragment = -1;
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static int hf_ipv6_fragment_overlap = -1;
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static int hf_ipv6_fragment_overlap_conflict = -1;
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static int hf_ipv6_fragment_multiple_tails = -1;
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static int hf_ipv6_fragment_too_long_fragment = -1;
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static int hf_ipv6_fragment_error = -1;
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static int hf_ipv6_mipv6_type = -1;
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static int hf_ipv6_mipv6_length = -1;
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static int hf_ipv6_mipv6_a_flag = -1;
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static int hf_ipv6_mipv6_h_flag = -1;
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static int hf_ipv6_mipv6_r_flag = -1;
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static int hf_ipv6_mipv6_d_flag = -1;
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static int hf_ipv6_mipv6_m_flag = -1;
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static int hf_ipv6_mipv6_b_flag = -1;
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static int hf_ipv6_mipv6_prefix_length = -1;
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static int hf_ipv6_mipv6_sequence_number = -1;
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static int hf_ipv6_mipv6_life_time = -1;
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static int hf_ipv6_mipv6_status = -1;
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static int hf_ipv6_mipv6_refresh = -1;
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static int hf_ipv6_mipv6_home_address = -1;
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static int hf_ipv6_mipv6_sub_type = -1;
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static int hf_ipv6_mipv6_sub_length = -1;
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static int hf_ipv6_mipv6_sub_unique_ID = -1;
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static int hf_ipv6_mipv6_sub_alternative_COA = -1;
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static gint ett_ipv6 = -1;
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static gint ett_ipv6_fragments = -1;
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static gint ett_ipv6_fragment = -1;
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fragment_items ipv6_frag_items = {
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&ett_ipv6_fragment,
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&ett_ipv6_fragments,
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&hf_ipv6_fragments,
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&hf_ipv6_fragment,
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&hf_ipv6_fragment_overlap,
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&hf_ipv6_fragment_overlap_conflict,
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&hf_ipv6_fragment_multiple_tails,
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&hf_ipv6_fragment_too_long_fragment,
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&hf_ipv6_fragment_error,
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"fragments"
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};
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static dissector_handle_t data_handle;
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/* Reassemble fragmented datagrams */
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static gboolean ipv6_reassemble = FALSE;
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#ifndef offsetof
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#define offsetof(type, member) ((size_t)(&((type *)0)->member))
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#endif
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/*
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* defragmentation of IPv6
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*/
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static GHashTable *ipv6_fragment_table = NULL;
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static void
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ipv6_reassemble_init(void)
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{
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fragment_table_init(&ipv6_fragment_table);
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}
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static int
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dissect_routing6(tvbuff_t *tvb, int offset, proto_tree *tree) {
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struct ip6_rthdr rt;
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guint len;
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proto_tree *rthdr_tree;
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proto_item *ti;
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char buf[sizeof(struct ip6_rthdr0) + sizeof(struct e_in6_addr) * 23];
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tvb_memcpy(tvb, (guint8 *)&rt, offset, sizeof(rt));
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len = (rt.ip6r_len + 1) << 3;
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if (tree) {
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/* !!! specify length */
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ti = proto_tree_add_text(tree, tvb, offset, len,
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"Routing Header, Type %u", rt.ip6r_type);
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rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_rthdr, ip6r_nxt), 1,
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"Next header: %s (0x%02x)", ipprotostr(rt.ip6r_nxt), rt.ip6r_nxt);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_rthdr, ip6r_len), 1,
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"Length: %u (%d bytes)", rt.ip6r_len, len);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_rthdr, ip6r_type), 1,
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"Type: %u", rt.ip6r_type);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_rthdr, ip6r_segleft), 1,
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"Segments left: %u", rt.ip6r_segleft);
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if (rt.ip6r_type == 0 && len <= sizeof(buf)) {
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struct e_in6_addr *a;
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int n;
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struct ip6_rthdr0 *rt0;
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tvb_memcpy(tvb, buf, offset, len);
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rt0 = (struct ip6_rthdr0 *)buf;
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for (a = rt0->ip6r0_addr, n = 0;
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a < (struct e_in6_addr *)(buf + len);
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a++, n++) {
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_rthdr0, ip6r0_addr) + n * sizeof(struct e_in6_addr),
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sizeof(struct e_in6_addr),
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#ifdef INET6
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"address %d: %s (%s)",
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n, get_hostname6(a), ip6_to_str(a)
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#else
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"address %d: %s", n, ip6_to_str(a)
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#endif
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);
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}
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}
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/* decode... */
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}
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return len;
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}
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static int
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dissect_frag6(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree,
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guint16 *offlg, guint32 *ident) {
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struct ip6_frag frag;
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int len;
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proto_item *ti;
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proto_tree *rthdr_tree;
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tvb_memcpy(tvb, (guint8 *)&frag, offset, sizeof(frag));
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len = sizeof(frag);
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frag.ip6f_offlg = g_ntohs(frag.ip6f_offlg);
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*offlg = frag.ip6f_offlg;
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*ident = frag.ip6f_ident;
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"IPv6 fragment (nxt=%s (0x%02x) off=%u id=0x%x)",
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ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt,
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frag.ip6f_offlg & IP6F_OFF_MASK, frag.ip6f_ident);
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}
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if (tree) {
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ti = proto_tree_add_text(tree, tvb, offset, len,
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"Fragmention Header");
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rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_frag, ip6f_nxt), 1,
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"Next header: %s (0x%02x)",
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ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt);
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#if 0
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_frag, ip6f_reserved), 1,
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"Reserved: %u",
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frag.ip6f_reserved);
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#endif
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
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"Offset: %u",
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frag.ip6f_offlg & IP6F_OFF_MASK);
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
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"More fragments: %s",
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frag.ip6f_offlg & IP6F_MORE_FRAG ?
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"Yes" : "No");
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proto_tree_add_text(rthdr_tree, tvb,
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offset + offsetof(struct ip6_frag, ip6f_ident), 4,
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"Identification: 0x%08x",
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frag.ip6f_ident);
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}
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return len;
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}
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/* Binding Update flag description */
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static const true_false_string ipv6_mipv6_bu_a_flag_value = {
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"Binding Acknowledgement requested",
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"Binding Acknowledgement not requested"
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};
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static const true_false_string ipv6_mipv6_bu_h_flag_value = {
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"Home Registration",
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"No Home Registration"
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};
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static const true_false_string ipv6_mipv6_bu_r_flag_value = {
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"Router",
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"Not a Router"
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};
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static const true_false_string ipv6_mipv6_bu_d_flag_value = {
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"Perform Duplicate Address Detection",
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"Do not perform Duplicate Address Detection"
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};
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static const true_false_string ipv6_mipv6_bu_m_flag_value = {
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"MAP Registration",
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"No MAP Registration"
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};
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static const true_false_string ipv6_mipv6_bu_b_flag_value = {
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"Request for bicasting",
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"Do not request for bicasting"
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};
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static int
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dissect_mipv6_ba(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
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{
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guint8 status, len = 0;
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const char *status_text;
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gboolean sub_options = FALSE;
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proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_type, tvb,
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offset + len, IP6_MIPv6_OPTION_TYPE_LENGTH,
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tvb_get_guint8(tvb, offset + len),
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"Option Type: %u (0x%02x) - Binding Acknowledgement",
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tvb_get_guint8(tvb, offset + len),
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tvb_get_guint8(tvb, offset + len));
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len += IP6_MIPv6_OPTION_TYPE_LENGTH;
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if (tvb_get_guint8(tvb, offset + len) > 11)
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sub_options = TRUE;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_length, tvb, offset + len,
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IP6_MIPv6_OPTION_LENGTH_LENGTH, tvb_get_guint8(tvb, offset + len));
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len += IP6_MIPv6_OPTION_LENGTH_LENGTH;
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status = tvb_get_guint8(tvb, offset + len);
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switch (status) {
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case BA_OK:
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status_text = "- Binding Update accepted";
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break;
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case BA_REAS_UNSPEC:
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status_text = "- Binding Update was rejected - Reason unspecified";
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break;
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case BA_ADMIN_PROH:
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status_text = "- Binding Update was rejected - Administratively prohibited";
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break;
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case BA_INSUF_RES:
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status_text = "- Binding Update was rejected - Insufficient resources";
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break;
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case BA_NO_HR:
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status_text = "- Binding Update was rejected - Home registration not supported";
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break;
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case BA_NO_SUBNET:
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status_text = "- Binding Update was rejected - Not home subnet";
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break;
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case BA_ERR_ID_LEN:
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status_text = "- Binding Update was rejected - Incorrect interface identifier length";
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break;
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case BA_NO_HA:
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status_text = "- Binding Update was rejected - Not home agent for this mobile node";
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break;
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case BA_DUPL_ADDR:
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status_text = "- Binding Update was rejected - Duplicate Address Detection failed";
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break;
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default:
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status_text = NULL;
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break;
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}
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if (!status_text) {
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if (status > 128)
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status_text = "- Binding Update was rejected";
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else
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status_text = "";
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}
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proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_status,
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tvb, offset + len, IP6_MIPv6_STATUS_LENGTH,
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tvb_get_guint8(tvb, offset + len),
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"Status: %u %s", tvb_get_guint8(tvb, offset + len), status_text);
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len += IP6_MIPv6_STATUS_LENGTH;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sequence_number,
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tvb, offset + len, IP6_MIPv6_SEQUENCE_NUMBER_LENGTH,
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tvb_get_ntohs(tvb, offset + len));
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len += IP6_MIPv6_SEQUENCE_NUMBER_LENGTH;
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if (tvb_get_ntohl(tvb, offset + len) == 0xffffffff) {
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proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_life_time,
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tvb, offset + len, IP6_MIPv6_LIFE_TIME_LENGTH,
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tvb_get_ntohl(tvb, offset + len),
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"Life Time: %u - Infinity", tvb_get_ntohl(tvb, offset + len));
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} else {
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_life_time,
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tvb, offset + len, IP6_MIPv6_LIFE_TIME_LENGTH,
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tvb_get_ntohl(tvb, offset + len));
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}
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len += IP6_MIPv6_LIFE_TIME_LENGTH;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_refresh, tvb,
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offset + len, IP6_MIPv6_REFRESH_LENGTH,
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tvb_get_ntohl(tvb, offset + len));
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len += IP6_MIPv6_REFRESH_LENGTH;
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/* sub - options */
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if (sub_options)
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proto_tree_add_text(dstopt_tree, tvb, offset + len, 1, "Sub-Options");
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return len;
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}
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static int
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dissect_mipv6_bu(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
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{
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int len = 0;
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gboolean sub_options = FALSE;
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proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_type, tvb, offset,
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IP6_MIPv6_OPTION_TYPE_LENGTH, tvb_get_guint8(tvb, offset),
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"Option Type: %u (0x%02x) - Binding Update",
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tvb_get_guint8(tvb, offset), tvb_get_guint8(tvb, offset));
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len += IP6_MIPv6_OPTION_TYPE_LENGTH;
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if (tvb_get_guint8(tvb, offset + len) > 8)
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sub_options = TRUE;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_length, tvb, offset + len,
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IP6_MIPv6_OPTION_LENGTH_LENGTH, tvb_get_guint8(tvb, offset + len));
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len += IP6_MIPv6_OPTION_LENGTH_LENGTH;
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_a_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_h_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_r_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_d_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_m_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_b_flag, tvb, offset + len,
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IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset + len));
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len += IP6_MIPv6_FLAGS_LENGTH;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_prefix_length, tvb,
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offset + len,
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IP6_MIPv6_PREFIX_LENGTH_LENGTH, tvb_get_guint8(tvb, offset + len));
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len += IP6_MIPv6_PREFIX_LENGTH_LENGTH;
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proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sequence_number, tvb,
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offset + len, IP6_MIPv6_SEQUENCE_NUMBER_LENGTH,
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tvb_get_ntohs(tvb, offset + len));
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len += IP6_MIPv6_SEQUENCE_NUMBER_LENGTH;
|
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if (tvb_get_ntohl(tvb, offset + len) == 0xffffffff) {
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proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_life_time, tvb,
|
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offset + len, IP6_MIPv6_LIFE_TIME_LENGTH,
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tvb_get_ntohl(tvb, offset + len), "Life Time: %u - Infinity",
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tvb_get_ntohl(tvb, offset + len));
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} else {
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_life_time, tvb,
|
|
offset + len, IP6_MIPv6_LIFE_TIME_LENGTH, tvb_get_ntohl(tvb,
|
|
offset + len));
|
|
}
|
|
len += IP6_MIPv6_LIFE_TIME_LENGTH;
|
|
/* sub - options */
|
|
if (sub_options)
|
|
proto_tree_add_text(dstopt_tree, tvb, offset + len, 1, "Sub-Options");
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
dissect_mipv6_ha(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
|
|
{
|
|
int len = 0;
|
|
gboolean sub_options = FALSE;
|
|
|
|
proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_type, tvb,
|
|
offset + len, IP6_MIPv6_OPTION_TYPE_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len),
|
|
"Option Type: %u (0x%02x) - Home Address",
|
|
tvb_get_guint8(tvb, offset + len), tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_OPTION_TYPE_LENGTH;
|
|
if (tvb_get_guint8(tvb, offset + len) > 16)
|
|
sub_options = TRUE;
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_length, tvb, offset + len,
|
|
IP6_MIPv6_OPTION_LENGTH_LENGTH, tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_OPTION_LENGTH_LENGTH;
|
|
proto_tree_add_ipv6(dstopt_tree, hf_ipv6_mipv6_home_address, tvb,
|
|
offset + len, IP6_MIPv6_HOME_ADDRESS_LENGTH,
|
|
tvb_get_ptr(tvb, offset + len, IP6_MIPv6_HOME_ADDRESS_LENGTH));
|
|
len += IP6_MIPv6_HOME_ADDRESS_LENGTH;
|
|
/* sub - options */
|
|
if (sub_options)
|
|
proto_tree_add_text(dstopt_tree, tvb, offset + len, 1, "Sub-Options");
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
dissect_mipv6_br(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
|
|
{
|
|
int len = 0;
|
|
gboolean sub_options = FALSE;
|
|
|
|
proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_type, tvb,
|
|
offset + len, IP6_MIPv6_OPTION_TYPE_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len),
|
|
"Option Type: %u (0x%02x) - Binding Request",
|
|
tvb_get_guint8(tvb, offset + len), tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_OPTION_TYPE_LENGTH;
|
|
if (tvb_get_guint8(tvb, offset + len) > 0)
|
|
sub_options = TRUE;
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_length, tvb, offset + len,
|
|
IP6_MIPv6_OPTION_LENGTH_LENGTH, tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_OPTION_LENGTH_LENGTH;
|
|
/* sub - options */
|
|
if (sub_options)
|
|
proto_tree_add_text(dstopt_tree, tvb, offset + len, 1, "Sub-Options");
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
dissect_mipv6_sub_u(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
|
|
{
|
|
int len = 0;
|
|
|
|
proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_sub_length, tvb,
|
|
offset + len, IP6_MIPv6_SUB_TYPE_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len),
|
|
"Sub-Option Type: %u (0x%02x) - Unique Identifier Sub-Option",
|
|
tvb_get_guint8(tvb, offset + len), tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_SUB_TYPE_LENGTH;
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sub_length, tvb,
|
|
offset + len, IP6_MIPv6_SUB_LENGTH_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_SUB_LENGTH_LENGTH;
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sub_unique_ID, tvb,
|
|
offset + len, IP6_MIPv6_SUB_UNIQUE_ID_LENGTH,
|
|
tvb_get_ntohs(tvb, offset + len));
|
|
len += IP6_MIPv6_SUB_UNIQUE_ID_LENGTH;
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
dissect_mipv6_sub_a_coa(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
|
|
{
|
|
int len = 0;
|
|
|
|
proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_sub_type, tvb,
|
|
offset + len, IP6_MIPv6_SUB_TYPE_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len),
|
|
"Sub-Option Type: %u (0x%02x) - Alternative Care Of Address",
|
|
tvb_get_guint8(tvb, offset + len),
|
|
tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_SUB_TYPE_LENGTH;
|
|
proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sub_length, tvb,
|
|
offset + len, IP6_MIPv6_SUB_LENGTH_LENGTH,
|
|
tvb_get_guint8(tvb, offset + len));
|
|
len += IP6_MIPv6_SUB_LENGTH_LENGTH;
|
|
proto_tree_add_ipv6(dstopt_tree, hf_ipv6_mipv6_sub_alternative_COA, tvb,
|
|
offset + len, IP6_MIPv6_SUB_ALTERNATIVE_COA_LENGTH,
|
|
tvb_get_ptr(tvb, offset + len, IP6_MIPv6_SUB_ALTERNATIVE_COA_LENGTH));
|
|
len += IP6_MIPv6_SUB_ALTERNATIVE_COA_LENGTH;
|
|
return len;
|
|
}
|
|
|
|
static const value_string rtalertvals[] = {
|
|
{ IP6OPT_RTALERT_MLD, "MLD" },
|
|
{ IP6OPT_RTALERT_RSVP, "RSVP" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
static int
|
|
dissect_opts(tvbuff_t *tvb, int offset, proto_tree *tree, char *optname)
|
|
{
|
|
struct ip6_ext ext;
|
|
int len;
|
|
proto_tree *dstopt_tree;
|
|
proto_item *ti;
|
|
gint p;
|
|
guint8 tmp;
|
|
int mip_offset = 0, delta = 0;
|
|
|
|
tvb_memcpy(tvb, (guint8 *)&ext, offset, sizeof(ext));
|
|
len = (ext.ip6e_len + 1) << 3;
|
|
|
|
if (tree) {
|
|
/* !!! specify length */
|
|
ti = proto_tree_add_text(tree, tvb, offset, len, "%s Header ", optname);
|
|
|
|
dstopt_tree = proto_item_add_subtree(ti, ett_ipv6);
|
|
|
|
proto_tree_add_text(dstopt_tree, tvb,
|
|
offset + offsetof(struct ip6_ext, ip6e_nxt), 1,
|
|
"Next header: %s (0x%02x)", ipprotostr(ext.ip6e_nxt), ext.ip6e_nxt);
|
|
proto_tree_add_text(dstopt_tree, tvb,
|
|
offset + offsetof(struct ip6_ext, ip6e_len), 1,
|
|
"Length: %u (%d bytes)", ext.ip6e_len, len);
|
|
|
|
mip_offset = offset;
|
|
mip_offset += 2;
|
|
|
|
p = offset + 2;
|
|
|
|
while (p < offset + len) {
|
|
switch (tvb_get_guint8(tvb, p)) {
|
|
case IP6OPT_PAD1:
|
|
proto_tree_add_text(dstopt_tree, tvb, p, 1, "Pad1");
|
|
p++;
|
|
mip_offset++;
|
|
break;
|
|
case IP6OPT_PADN:
|
|
tmp = tvb_get_guint8(tvb, p + 1);
|
|
proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
|
|
"PadN: %u bytes", tmp + 2);
|
|
p += tmp;
|
|
p += 2;
|
|
mip_offset += tvb_get_guint8(tvb, mip_offset + 1) + 2;
|
|
break;
|
|
case IP6OPT_JUMBO:
|
|
tmp = tvb_get_guint8(tvb, p + 1);
|
|
if (tmp == 4) {
|
|
proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
|
|
"Jumbo payload: %u (%u bytes)",
|
|
tvb_get_ntohl(tvb, p + 2), tmp + 2);
|
|
} else {
|
|
proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
|
|
"Jumbo payload: Invalid length (%u bytes)",
|
|
tmp + 2);
|
|
}
|
|
p += tmp;
|
|
p += 2;
|
|
mip_offset += tvb_get_guint8(tvb, mip_offset+1)+2;
|
|
break;
|
|
case IP6OPT_RTALERT:
|
|
{
|
|
char *rta;
|
|
|
|
tmp = tvb_get_guint8(tvb, p + 1);
|
|
if (tmp == 2) {
|
|
rta = val_to_str(tvb_get_ntohs(tvb, p + 2), rtalertvals,
|
|
"Unknown");
|
|
} else
|
|
rta = "Invalid length";
|
|
ti = proto_tree_add_text(dstopt_tree, tvb, p , tmp + 2,
|
|
"Router alert: %s (%u bytes)", rta, tmp + 2);
|
|
p += tmp;
|
|
p += 2;
|
|
mip_offset += tvb_get_guint8(tvb, mip_offset + 1) + 2;
|
|
break;
|
|
}
|
|
case IP6OPT_BINDING_UPDATE :
|
|
delta = dissect_mipv6_bu(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
case IP6OPT_BINDING_ACK :
|
|
delta = dissect_mipv6_ba(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
case IP6OPT_HOME_ADDRESS :
|
|
delta = dissect_mipv6_ha(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
case IP6OPT_BINDING_REQUEST :
|
|
delta = dissect_mipv6_br(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
case IP6OPT_MIPv6_UNIQUE_ID_SUB :
|
|
delta = dissect_mipv6_sub_u(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
case IP6OPT_MIPv6_ALTERNATIVE_COA_SUB :
|
|
delta = dissect_mipv6_sub_a_coa(tvb, dstopt_tree, mip_offset);
|
|
p += delta;
|
|
mip_offset += delta;
|
|
break;
|
|
default:
|
|
p = offset + len;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* decode... */
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static int
|
|
dissect_hopopts(tvbuff_t *tvb, int offset, proto_tree *tree)
|
|
{
|
|
return dissect_opts(tvb, offset, tree, "Hop-by-hop Option");
|
|
}
|
|
|
|
static int
|
|
dissect_dstopts(tvbuff_t *tvb, int offset, proto_tree *tree)
|
|
{
|
|
return dissect_opts(tvb, offset, tree, "Destination Option");
|
|
}
|
|
|
|
static void
|
|
dissect_ipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *ipv6_tree = NULL;
|
|
proto_item *ti;
|
|
guint8 nxt;
|
|
int advance;
|
|
int poffset;
|
|
guint16 plen;
|
|
gboolean hopopts, routing, frag, ah, dstopts;
|
|
guint16 offlg;
|
|
guint32 ident;
|
|
int offset;
|
|
fragment_data *ipfd_head;
|
|
tvbuff_t *next_tvb;
|
|
gboolean update_col_info = TRUE;
|
|
gboolean save_fragmented;
|
|
|
|
struct ip6_hdr ipv6;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPv6");
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
offset = 0;
|
|
tvb_memcpy(tvb, (guint8 *)&ipv6, offset, sizeof(ipv6));
|
|
|
|
pinfo->ipproto = ipv6.ip6_nxt; /* XXX make work TCP follow (ipproto = 6) */
|
|
|
|
/* Get the payload length */
|
|
plen = g_ntohs(ipv6.ip6_plen);
|
|
|
|
/* Adjust the length of this tvbuff to include only the IPv6 datagram. */
|
|
set_actual_length(tvb, plen + sizeof (struct ip6_hdr));
|
|
|
|
SET_ADDRESS(&pinfo->net_src, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_SRC, 16));
|
|
SET_ADDRESS(&pinfo->src, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_SRC, 16));
|
|
SET_ADDRESS(&pinfo->net_dst, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_DST, 16));
|
|
SET_ADDRESS(&pinfo->dst, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_DST, 16));
|
|
|
|
if (tree) {
|
|
/* !!! specify length */
|
|
ti = proto_tree_add_item(tree, proto_ipv6, tvb, offset, 40, FALSE);
|
|
ipv6_tree = proto_item_add_subtree(ti, ett_ipv6);
|
|
|
|
/* !!! warning: version also contains 4 Bit priority */
|
|
proto_tree_add_uint(ipv6_tree, hf_ipv6_version, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_vfc), 1,
|
|
(ipv6.ip6_vfc >> 4) & 0x0f);
|
|
|
|
proto_tree_add_uint(ipv6_tree, hf_ipv6_class, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_flow), 4,
|
|
(guint8)((g_ntohl(ipv6.ip6_flow) >> 20) & 0xff));
|
|
|
|
/*
|
|
* there should be no alignment problems for ip6_flow, since it's the first
|
|
* guint32 in the ipv6 struct
|
|
*/
|
|
proto_tree_add_uint_format(ipv6_tree, hf_ipv6_flow, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_flow), 4,
|
|
(unsigned long)(g_ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK),
|
|
"Flowlabel: 0x%05lx",
|
|
(unsigned long)(g_ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK));
|
|
|
|
proto_tree_add_uint(ipv6_tree, hf_ipv6_plen, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_plen), 2,
|
|
plen);
|
|
|
|
proto_tree_add_uint_format(ipv6_tree, hf_ipv6_nxt, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_nxt), 1,
|
|
ipv6.ip6_nxt,
|
|
"Next header: %s (0x%02x)",
|
|
ipprotostr(ipv6.ip6_nxt), ipv6.ip6_nxt);
|
|
|
|
proto_tree_add_uint(ipv6_tree, hf_ipv6_hlim, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_hlim), 1,
|
|
ipv6.ip6_hlim);
|
|
|
|
proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_src), 16,
|
|
ipv6.ip6_src.s6_addr8);
|
|
proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_dst), 16,
|
|
ipv6.ip6_dst.s6_addr8);
|
|
|
|
proto_tree_add_ipv6_format(ipv6_tree, hf_ipv6_src, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_src), 16,
|
|
(guint8 *)&ipv6.ip6_src,
|
|
#ifdef INET6
|
|
"Source address: %s (%s)",
|
|
get_hostname6(&ipv6.ip6_src),
|
|
#else
|
|
"Source address: %s",
|
|
#endif
|
|
ip6_to_str(&ipv6.ip6_src));
|
|
|
|
proto_tree_add_ipv6_format(ipv6_tree, hf_ipv6_dst, tvb,
|
|
offset + offsetof(struct ip6_hdr, ip6_dst), 16,
|
|
(guint8 *)&ipv6.ip6_dst,
|
|
#ifdef INET6
|
|
"Destination address: %s (%s)",
|
|
get_hostname6(&ipv6.ip6_dst),
|
|
#else
|
|
"Destination address: %s",
|
|
#endif
|
|
ip6_to_str(&ipv6.ip6_dst));
|
|
}
|
|
|
|
/* start of the new header (could be a extension header) */
|
|
poffset = offset + offsetof(struct ip6_hdr, ip6_nxt);
|
|
nxt = tvb_get_guint8(tvb, poffset);
|
|
offset += sizeof(struct ip6_hdr);
|
|
offlg = 0;
|
|
ident = 0;
|
|
|
|
/* start out assuming this isn't fragmented, and has none of the other
|
|
non-final headers */
|
|
hopopts = FALSE;
|
|
routing = FALSE;
|
|
frag = FALSE;
|
|
ah = FALSE;
|
|
dstopts = FALSE;
|
|
|
|
again:
|
|
switch (nxt) {
|
|
case IP_PROTO_HOPOPTS:
|
|
hopopts = TRUE;
|
|
advance = dissect_hopopts(tvb, offset, tree);
|
|
nxt = tvb_get_guint8(tvb, offset);
|
|
poffset = offset;
|
|
offset += advance;
|
|
plen -= advance;
|
|
goto again;
|
|
case IP_PROTO_ROUTING:
|
|
routing = TRUE;
|
|
advance = dissect_routing6(tvb, offset, tree);
|
|
nxt = tvb_get_guint8(tvb, offset);
|
|
poffset = offset;
|
|
offset += advance;
|
|
plen -= advance;
|
|
goto again;
|
|
case IP_PROTO_FRAGMENT:
|
|
frag = TRUE;
|
|
advance = dissect_frag6(tvb, offset, pinfo, tree,
|
|
&offlg, &ident);
|
|
nxt = tvb_get_guint8(tvb, offset);
|
|
poffset = offset;
|
|
offset += advance;
|
|
plen -= advance;
|
|
goto again;
|
|
case IP_PROTO_AH:
|
|
ah = TRUE;
|
|
advance = dissect_ah_header(
|
|
tvb_new_subset(tvb, offset, -1, -1),
|
|
pinfo, tree, NULL, NULL);
|
|
nxt = tvb_get_guint8(tvb, offset);
|
|
poffset = offset;
|
|
offset += advance;
|
|
plen -= advance;
|
|
goto again;
|
|
case IP_PROTO_DSTOPTS:
|
|
dstopts = TRUE;
|
|
advance = dissect_dstopts(tvb, offset, tree);
|
|
nxt = tvb_get_guint8(tvb, offset);
|
|
poffset = offset;
|
|
offset += advance;
|
|
plen -= advance;
|
|
goto again;
|
|
}
|
|
|
|
#ifdef TEST_FINALHDR
|
|
proto_tree_add_uint_hidden(ipv6_tree, hf_ipv6_final, tvb, poffset, 1, nxt);
|
|
#endif
|
|
|
|
/* If ipv6_reassemble is on, this is a fragment, and we have all the data
|
|
* in the fragment, then just add the fragment to the hashtable.
|
|
*/
|
|
save_fragmented = pinfo->fragmented;
|
|
if (ipv6_reassemble && frag && tvb_reported_length(tvb) <= tvb_length(tvb)) {
|
|
ipfd_head = fragment_add(tvb, offset, pinfo, ident,
|
|
ipv6_fragment_table,
|
|
offlg & IP6F_OFF_MASK,
|
|
plen,
|
|
offlg & IP6F_MORE_FRAG);
|
|
|
|
if (ipfd_head != NULL) {
|
|
/* OK, we have the complete reassembled payload.
|
|
Allocate a new tvbuff, referring to the reassembled payload. */
|
|
next_tvb = tvb_new_real_data(ipfd_head->data, ipfd_head->datalen,
|
|
ipfd_head->datalen);
|
|
|
|
/* Add the tvbuff to the list of tvbuffs to which the tvbuff we
|
|
were handed refers, so it'll get cleaned up when that tvbuff
|
|
is cleaned up. */
|
|
tvb_set_child_real_data_tvbuff(tvb, next_tvb);
|
|
|
|
/* Add the defragmented data to the data source list. */
|
|
add_new_data_source(pinfo, next_tvb, "Reassembled IPv6");
|
|
|
|
/* show all fragments */
|
|
update_col_info = !show_fragment_tree(ipfd_head, &ipv6_frag_items,
|
|
ipv6_tree, pinfo, next_tvb);
|
|
} else {
|
|
/* We don't have the complete reassembled payload. */
|
|
next_tvb = NULL;
|
|
}
|
|
} else {
|
|
/* If this is the first fragment, dissect its contents, otherwise
|
|
just show it as a fragment.
|
|
|
|
XXX - if we eventually don't save the reassembled contents of all
|
|
fragmented datagrams, we may want to always reassemble. */
|
|
if (offlg & IP6F_OFF_MASK) {
|
|
/* Not the first fragment - don't dissect it. */
|
|
next_tvb = NULL;
|
|
} else {
|
|
/* First fragment, or not fragmented. Dissect what we have here. */
|
|
|
|
/* Get a tvbuff for the payload. */
|
|
next_tvb = tvb_new_subset(tvb, offset, -1, -1);
|
|
|
|
/*
|
|
* If this is the first fragment, but not the only fragment,
|
|
* tell the next protocol that.
|
|
*/
|
|
if (offlg & IP6F_MORE_FRAG)
|
|
pinfo->fragmented = TRUE;
|
|
else
|
|
pinfo->fragmented = FALSE;
|
|
}
|
|
}
|
|
|
|
if (next_tvb == NULL) {
|
|
/* Just show this as a fragment. */
|
|
/* COL_INFO was filled in by "dissect_frag6()" */
|
|
call_dissector(data_handle, tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
|
|
|
|
/* As we haven't reassembled anything, we haven't changed "pi", so
|
|
we don't have to restore it. */
|
|
pinfo->fragmented = save_fragmented;
|
|
return;
|
|
}
|
|
|
|
/* do lookup with the subdissector table */
|
|
if (!dissector_try_port(ip_dissector_table, nxt, next_tvb, pinfo, tree)) {
|
|
/* Unknown protocol.
|
|
Handle "no next header" specially. */
|
|
if (nxt == IP_PROTO_NONE) {
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
/* If we had an Authentication Header, the AH dissector already
|
|
put something in the Info column; leave it there. */
|
|
if (!ah) {
|
|
if (hopopts || routing || dstopts) {
|
|
char *sep = "IPv6 ";
|
|
if (hopopts) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%shop-by-hop options",
|
|
sep);
|
|
sep = ", ";
|
|
}
|
|
if (routing) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%srouting", sep);
|
|
sep = ", ";
|
|
}
|
|
if (dstopts) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%sdestination options",
|
|
sep);
|
|
}
|
|
} else
|
|
col_set_str(pinfo->cinfo, COL_INFO, "IPv6 no next header");
|
|
}
|
|
}
|
|
} else {
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s (0x%02x)", ipprotostr(nxt),nxt);
|
|
}
|
|
call_dissector(data_handle, next_tvb, pinfo, tree);
|
|
}
|
|
pinfo->fragmented = save_fragmented;
|
|
}
|
|
|
|
void
|
|
proto_register_ipv6(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_ipv6_version,
|
|
{ "Version", "ipv6.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_class,
|
|
{ "Traffic class", "ipv6.class",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_flow,
|
|
{ "Flowlabel", "ipv6.flow",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_plen,
|
|
{ "Payload length", "ipv6.plen",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_nxt,
|
|
{ "Next header", "ipv6.nxt",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_hlim,
|
|
{ "Hop limit", "ipv6.hlim",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_ipv6_src,
|
|
{ "Source", "ipv6.src",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Source IPv6 Address", HFILL }},
|
|
{ &hf_ipv6_dst,
|
|
{ "Destination", "ipv6.dst",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Destination IPv6 Address", HFILL }},
|
|
{ &hf_ipv6_addr,
|
|
{ "Address", "ipv6.addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Source or Destination IPv6 Address", 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_NONE, BASE_NONE, NULL, 0x0,
|
|
"Defragmentation error due to illegal fragments", HFILL }},
|
|
|
|
{ &hf_ipv6_fragment,
|
|
{ "IPv6 Fragment", "ipv6.fragment",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"IPv6 Fragment", HFILL }},
|
|
|
|
{ &hf_ipv6_fragments,
|
|
{ "IPv6 Fragments", "ipv6.fragments",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"IPv6 Fragments", HFILL }},
|
|
|
|
/* BT INSERT BEGIN */
|
|
{ &hf_ipv6_mipv6_type,
|
|
{ "Option Type ", "ipv6.mipv6_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_length,
|
|
{ "Option Length ", "ipv6.mipv6_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_a_flag,
|
|
{ "Acknowledge (A) ", "ipv6.mipv6_a_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_a_flag_value),
|
|
IP6_MIPv6_BU_A_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_h_flag,
|
|
{ "Home Registration (H) ", "ipv6.mipv6_h_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_h_flag_value),
|
|
IP6_MIPv6_BU_H_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_r_flag,
|
|
{ "Router (R) ", "ipv6.mipv6_r_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_r_flag_value),
|
|
IP6_MIPv6_BU_R_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_d_flag,
|
|
{ "Duplicate Address Detection (D) ", "ipv6.mipv6_d_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_d_flag_value),
|
|
IP6_MIPv6_BU_D_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_m_flag,
|
|
{ "MAP Registration (M) ", "ipv6.mipv6_m_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_m_flag_value),
|
|
IP6_MIPv6_BU_M_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_b_flag,
|
|
{ "Bicasting all (B) ", "ipv6.mipv6_b_flag",
|
|
FT_BOOLEAN, 8, TFS(&ipv6_mipv6_bu_b_flag_value),
|
|
IP6_MIPv6_BU_B_FLAG,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_prefix_length,
|
|
{ "Prefix Length ", "ipv6.mipv6_prefix_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_sequence_number,
|
|
{ "Sequence Number ", "ipv6.mipv6_sequence_number",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_life_time,
|
|
{ "Life Time ", "ipv6.mipv6_life_time",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_status,
|
|
{ "Status ", "ipv6.mipv6_status",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_refresh,
|
|
{ "Refresh ", "ipv6.mipv6_refresh",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_home_address,
|
|
{ "Home Address ", "ipv6.mipv6_home_address",
|
|
FT_IPv6, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_sub_type,
|
|
{ "Sub-Option Type ", "ipv6.mipv6_sub_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_sub_length,
|
|
{ "Sub-Option Length ", "ipv6.mipv6_sub_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_sub_unique_ID,
|
|
{ "Unique Identifier ", "ipv6.mipv6_sub_unique_ID",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
{ &hf_ipv6_mipv6_sub_alternative_COA,
|
|
{ "Alternative Care of Address ", "ipv6.mipv6_sub_alternative_COA",
|
|
FT_IPv6, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
/* BT INSERT END */
|
|
#ifdef TEST_FINALHDR
|
|
{ &hf_ipv6_final,
|
|
{ "Final next header", "ipv6.final",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
#endif
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_ipv6,
|
|
&ett_ipv6_fragments,
|
|
&ett_ipv6_fragment,
|
|
};
|
|
module_t *ipv6_module;
|
|
|
|
proto_ipv6 = proto_register_protocol("Internet Protocol Version 6", "IPv6", "ipv6");
|
|
proto_register_field_array(proto_ipv6, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* 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);
|
|
|
|
register_dissector("ipv6", dissect_ipv6, proto_ipv6);
|
|
register_init_routine(ipv6_reassemble_init);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ipv6(void)
|
|
{
|
|
dissector_handle_t ipv6_handle;
|
|
|
|
data_handle = find_dissector("data");
|
|
ipv6_handle = find_dissector("ipv6");
|
|
dissector_add("ethertype", ETHERTYPE_IPv6, ipv6_handle);
|
|
dissector_add("ppp.protocol", PPP_IPV6, ipv6_handle);
|
|
dissector_add("ppp.protocol", ETHERTYPE_IPv6, ipv6_handle);
|
|
dissector_add("gre.proto", ETHERTYPE_IPv6, ipv6_handle);
|
|
dissector_add("ip.proto", IP_PROTO_IPV6, ipv6_handle);
|
|
dissector_add("null.type", BSD_AF_INET6_BSD, ipv6_handle);
|
|
dissector_add("null.type", BSD_AF_INET6_FREEBSD, ipv6_handle);
|
|
dissector_add("null.type", BSD_AF_INET6_DARWIN, ipv6_handle);
|
|
dissector_add("chdlctype", ETHERTYPE_IPv6, ipv6_handle);
|
|
dissector_add("fr.ietf", NLPID_IP6, ipv6_handle);
|
|
dissector_add("x.25.spi", NLPID_IP6, ipv6_handle);
|
|
}
|