forked from osmocom/wireshark
d4f633378a
svn path=/trunk/; revision=2593
1159 lines
37 KiB
C
1159 lines
37 KiB
C
/* packet-icmpv6.c
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* Routines for ICMPv6 packet disassembly
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*
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* $Id: packet-icmpv6.c,v 1.29 2000/11/09 21:57:35 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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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 <stdio.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <glib.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include "packet.h"
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#include "packet-ipv6.h"
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#include "packet-ip.h"
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#include "packet-dns.h"
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#include "resolv.h"
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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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static int proto_icmpv6 = -1;
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static int hf_icmpv6_type = -1;
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static int hf_icmpv6_code = -1;
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static int hf_icmpv6_checksum = -1;
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static gint ett_icmpv6 = -1;
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static gint ett_icmpv6opt = -1;
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static gint ett_icmpv6flag = -1;
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static gint ett_nodeinfo_flag = -1;
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static gint ett_nodeinfo_subject4 = -1;
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static gint ett_nodeinfo_subject6 = -1;
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static gint ett_nodeinfo_node4 = -1;
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static gint ett_nodeinfo_node6 = -1;
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static gint ett_nodeinfo_nodebitmap = -1;
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static gint ett_nodeinfo_nodedns = -1;
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static const value_string names_nodeinfo_qtype[] = {
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{ NI_QTYPE_NOOP, "NOOP" },
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{ NI_QTYPE_SUPTYPES, "Supported query types" },
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{ NI_QTYPE_DNSNAME, "DNS name" },
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{ NI_QTYPE_NODEADDR, "Node addresses" },
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{ NI_QTYPE_IPV4ADDR, "IPv4 node addresses" },
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{ 0, NULL }
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};
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static const value_string names_rrenum_matchcode[] = {
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{ RPM_PCO_ADD, "Add" },
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{ RPM_PCO_CHANGE, "Change" },
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{ RPM_PCO_SETGLOBAL, "Set Global" },
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{ 0, NULL }
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};
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static void
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dissect_icmpv6opt(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *icmp6opt_tree, *field_tree;
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proto_item *ti, *tf;
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struct nd_opt_hdr *opt;
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int len;
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char *typename;
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if (!tree)
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return;
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again:
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if (!IS_DATA_IN_FRAME(offset))
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return;
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opt = (struct nd_opt_hdr *)&pd[offset];
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len = opt->nd_opt_len << 3;
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/* !!! specify length */
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ti = proto_tree_add_text(tree, NullTVB, offset, len, "ICMPv6 options");
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icmp6opt_tree = proto_item_add_subtree(ti, ett_icmpv6opt);
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switch (opt->nd_opt_type) {
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case ND_OPT_SOURCE_LINKADDR:
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typename = "Source link-layer address";
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break;
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case ND_OPT_TARGET_LINKADDR:
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typename = "Target link-layer address";
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break;
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case ND_OPT_PREFIX_INFORMATION:
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typename = "Prefix information";
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break;
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case ND_OPT_REDIRECTED_HEADER:
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typename = "Redirected header";
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break;
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case ND_OPT_MTU:
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typename = "MTU";
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break;
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default:
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typename = "Unknown";
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break;
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}
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_hdr, nd_opt_type), 1,
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"Type: 0x%02x (%s)", opt->nd_opt_type, typename);
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_hdr, nd_opt_len), 1,
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"Length: %d bytes (0x%02x)", opt->nd_opt_len << 3, opt->nd_opt_len);
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/* decode... */
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switch (opt->nd_opt_type) {
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case ND_OPT_SOURCE_LINKADDR:
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case ND_OPT_TARGET_LINKADDR:
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{
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char *t;
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const char *p;
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int len, i;
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len = (opt->nd_opt_len << 3) - sizeof(*opt);
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t = (char *)malloc(len * 3);
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memset(t, 0, len * 3);
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p = &pd[offset + sizeof(*opt)];
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for (i = 0; i < len; i++) {
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if (i)
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t[i * 3 - 1] = ':';
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sprintf(&t[i * 3], "%02x", p[i] & 0xff);
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}
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + sizeof(*opt), len, "Link-layer address: %s", t);
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break;
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}
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case ND_OPT_PREFIX_INFORMATION:
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{
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struct nd_opt_prefix_info *pi = (struct nd_opt_prefix_info *)opt;
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int flagoff;
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_prefix_len),
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1, "Prefix length: %d", pi->nd_opt_pi_prefix_len);
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flagoff = offsetof(struct nd_opt_prefix_info, nd_opt_pi_flags_reserved);
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tf = proto_tree_add_text(icmp6opt_tree, NullTVB, flagoff, 1, "Flags: 0x%02x",
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pntohl(&pi->nd_opt_pi_flags_reserved));
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field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
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proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
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decode_boolean_bitfield(pi->nd_opt_pi_flags_reserved,
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0x80, 8, "Onlink", "Not onlink"));
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proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
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decode_boolean_bitfield(pi->nd_opt_pi_flags_reserved,
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0x40, 8, "Auto", "Not auto"));
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time),
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4, "Valid lifetime: 0x%08x",
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pntohl(&pi->nd_opt_pi_valid_time));
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time),
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4, "Preferred lifetime: 0x%08x",
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pntohl(&pi->nd_opt_pi_preferred_time));
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_prefix),
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16, "Prefix: %s", ip6_to_str(&pi->nd_opt_pi_prefix));
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break;
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}
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case ND_OPT_REDIRECTED_HEADER:
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + 8, (opt->nd_opt_len << 3) - 8, "Redirected packet");
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/* tiny sanity check */
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if ((pd[offset + 8] & 0xf0) == 0x60)
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dissect_ipv6(pd, offset + 8, fd, icmp6opt_tree);
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else
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old_dissect_data(pd, offset + 8, fd, icmp6opt_tree);
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break;
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case ND_OPT_MTU:
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{
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struct nd_opt_mtu *pi = (struct nd_opt_mtu *)opt;
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_mtu, nd_opt_mtu_mtu), 4,
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"MTU: %d", pntohl(&pi->nd_opt_mtu_mtu));
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break;
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}
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}
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if (opt->nd_opt_len == 0) {
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proto_tree_add_text(icmp6opt_tree, NullTVB,
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offset + offsetof(struct nd_opt_hdr, nd_opt_len), 1,
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"Invalid option length: %d",
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opt->nd_opt_len);
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return;
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}
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offset += (opt->nd_opt_len << 3);
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goto again;
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}
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/*
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* draft-ietf-ipngwg-icmp-name-lookups-06.txt
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* Note that the packet format was changed several times in the past.
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*/
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static const char *
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bitrange0(v, s, buf, buflen)
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guint32 v;
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int s;
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char *buf;
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int buflen;
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{
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guint32 v0;
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char *p, *ep;
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int off;
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int i, l;
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if (buflen < 1)
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return NULL;
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if (buflen == 1) {
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buf[0] = '\0';
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return NULL;
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}
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v0 = v;
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p = buf;
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ep = buf + buflen - 1;
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memset(buf, 0, buflen);
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off = 0;
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while (off < 32) {
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/* shift till we have 0x01 */
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if ((v & 0x01) == 0) {
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switch (v & 0x0f) {
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case 0x00:
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v >>= 4; off += 4; continue;
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case 0x08:
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v >>= 3; off += 3; continue;
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case 0x04: case 0x0c:
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v >>= 2; off += 2; continue;
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default:
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v >>= 1; off += 1; continue;
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}
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}
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/* we have 0x01 with us */
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for (i = 0; i < 32 - off; i++) {
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if ((v & (0x01 << i)) == 0)
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break;
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}
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if (i == 1)
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l = snprintf(p, ep - p, ",%d", s + off);
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else {
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l = snprintf(p, ep - p, ",%d-%d", s + off,
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s + off + i - 1);
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}
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if (l > ep - p) {
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buf[0] = '\0';
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return NULL;
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}
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v >>= i; off += i;
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}
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return buf;
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}
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static const char *
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bitrange(u_char *p, int l, int s)
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{
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static char buf[1024];
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char *q, *eq;
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int i;
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memset(buf, 0, sizeof(buf));
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q = buf;
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eq = buf + sizeof(buf) - 1;
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for (i = 0; i < l; i++) {
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if (bitrange0(pntohl(p + i * 4), s + i * 4, q, eq - q) == NULL) {
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if (q != buf && q + 5 < buf + sizeof(buf))
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strncpy(q, ",...", 5);
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return buf;
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}
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}
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return buf + 1;
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}
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static void
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dissect_nodeinfo(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *field_tree;
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proto_item *tf;
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struct icmp6_nodeinfo *ni;
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int off;
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int i, n, l;
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guint16 flags;
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u_char *p;
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char dname[MAXDNAME];
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ni = (struct icmp6_nodeinfo *)&pd[offset];
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/* flags */
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flags = pntohs(&ni->ni_flags);
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tf = proto_tree_add_text(tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "Flags: 0x%04x", flags);
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field_tree = proto_item_add_subtree(tf, ett_nodeinfo_flag);
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switch (pntohs(&ni->ni_qtype)) {
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case NI_QTYPE_SUPTYPES:
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if (ni->ni_type == ICMP6_NI_QUERY) {
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0001, sizeof(flags) * 8,
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"Compressed reply supported",
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"No compressed reply support"));
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} else {
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0001, sizeof(flags) * 8,
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"Compressed", "Not compressed"));
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}
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break;
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case NI_QTYPE_DNSNAME:
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if (ni->ni_type == ICMP6_NI_REPLY) {
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0001, sizeof(flags) * 8,
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"Valid TTL field", "Meaningless TTL field"));
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}
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break;
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case NI_QTYPE_NODEADDR:
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0020, sizeof(flags) * 8,
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"Global address",
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"Not global address"));
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0010, sizeof(flags) * 8,
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"Site-local address",
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"Not site-local address"));
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
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decode_boolean_bitfield(flags, 0x0008, sizeof(flags) * 8,
|
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"Link-local address",
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"Not link-local address"));
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proto_tree_add_text(field_tree, NullTVB,
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
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sizeof(ni->ni_flags), "%s",
|
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decode_boolean_bitfield(flags, 0x0004, sizeof(flags) * 8,
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"IPv4 compatible/mapped address",
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"Not IPv4 compatible/mapped address"));
|
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/* fall through */
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case NI_QTYPE_IPV4ADDR:
|
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proto_tree_add_text(field_tree, NullTVB,
|
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
|
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sizeof(ni->ni_flags), "%s",
|
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decode_boolean_bitfield(flags, 0x0002, sizeof(flags) * 8,
|
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"All unicast address",
|
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"Unicast addresses on the queried interface"));
|
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proto_tree_add_text(field_tree, NullTVB,
|
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offset + offsetof(struct icmp6_nodeinfo, ni_flags),
|
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sizeof(ni->ni_flags), "%s",
|
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decode_boolean_bitfield(flags, 0x0001, sizeof(flags) * 8,
|
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"Truncated", "Not truncated"));
|
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break;
|
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}
|
|
|
|
/* nonce */
|
|
proto_tree_add_text(tree, NullTVB,
|
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offset + offsetof(struct icmp6_nodeinfo, icmp6_ni_nonce[0]),
|
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sizeof(ni->icmp6_ni_nonce), "Nonce: 0x%08x%08x",
|
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pntohl(&ni->icmp6_ni_nonce[0]), pntohl(&ni->icmp6_ni_nonce[4]));
|
|
|
|
/* offset for "the rest of data" */
|
|
off = sizeof(*ni);
|
|
|
|
/* rest of data */
|
|
if (!IS_DATA_IN_FRAME(offset + sizeof(*ni)))
|
|
goto nodata;
|
|
if (ni->ni_type == ICMP6_NI_QUERY) {
|
|
switch (ni->ni_code) {
|
|
case ICMP6_NI_SUBJ_IPV6:
|
|
n = pi.captured_len - (offset + sizeof(*ni));
|
|
n /= sizeof(struct e_in6_addr);
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni), END_OF_FRAME, "IPv6 subject addresses");
|
|
field_tree = proto_item_add_subtree(tf, ett_nodeinfo_subject6);
|
|
p = (u_char *)(ni + 1);
|
|
for (i = 0; i < n; i++) {
|
|
proto_tree_add_text(field_tree, NullTVB,
|
|
p - pd, sizeof(struct e_in6_addr),
|
|
"%s", ip6_to_str((struct e_in6_addr *)p));
|
|
p += sizeof(struct e_in6_addr);
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
case ICMP6_NI_SUBJ_FQDN:
|
|
l = get_dns_name(pd, offset + sizeof(*ni), offset + sizeof(*ni),
|
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dname, sizeof(dname));
|
|
if (IS_DATA_IN_FRAME(offset + sizeof(*ni) + l) &&
|
|
pd[offset + sizeof(*ni) + l] == 0) {
|
|
l++;
|
|
proto_tree_add_text(tree, NullTVB, offset + sizeof(*ni), l,
|
|
"DNS label: %s (truncated)", dname);
|
|
} else {
|
|
proto_tree_add_text(tree, NullTVB, offset + sizeof(*ni), l,
|
|
"DNS label: %s", dname);
|
|
}
|
|
off = offset + sizeof(*ni) + l;
|
|
break;
|
|
case ICMP6_NI_SUBJ_IPV4:
|
|
n = pi.captured_len - (offset + sizeof(*ni));
|
|
n /= sizeof(guint32);
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni), END_OF_FRAME, "IPv4 subject addresses");
|
|
field_tree = proto_item_add_subtree(tf, ett_nodeinfo_subject4);
|
|
p = (u_char *)(ni + 1);
|
|
for (i = 0; i < n; i++) {
|
|
proto_tree_add_text(field_tree, NullTVB,
|
|
p - pd, sizeof(guint32), "%s", ip_to_str(p));
|
|
p += sizeof(guint32);
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
}
|
|
} else {
|
|
switch (pntohs(&ni->ni_qtype)) {
|
|
case NI_QTYPE_NOOP:
|
|
break;
|
|
case NI_QTYPE_SUPTYPES:
|
|
p = (u_char *)(ni + 1);
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni), END_OF_FRAME,
|
|
"Supported type bitmap%s",
|
|
(flags & 0x0001) ? ", compressed" : "");
|
|
field_tree = proto_item_add_subtree(tf,
|
|
ett_nodeinfo_nodebitmap);
|
|
n = 0;
|
|
while (IS_DATA_IN_FRAME(p - pd)) {
|
|
if ((flags & 0x0001) == 0) {
|
|
l = pi.captured_len - (offset + sizeof(*ni));
|
|
l /= sizeof(guint32);
|
|
i = 0;
|
|
} else {
|
|
if (!IS_DATA_IN_FRAME(p + sizeof(guint32) - 1 - pd))
|
|
break;
|
|
l = pntohs(p);
|
|
i = pntohs(p + sizeof(guint16)); /*skip*/
|
|
}
|
|
if (n + l * 32 > (1 << 16))
|
|
break;
|
|
if (n + (l + i) * 32 > (1 << 16))
|
|
break;
|
|
if ((flags & 0x0001) == 0) {
|
|
proto_tree_add_text(field_tree, NullTVB, p - pd,
|
|
l * 4, "Bitmap (%d to %d): %s", n, n + l * 32 - 1,
|
|
bitrange(p, l, n));
|
|
p += l * 4;
|
|
} else {
|
|
proto_tree_add_text(field_tree, NullTVB, p - pd,
|
|
4 + l * 4, "Bitmap (%d to %d): %s", n, n + l * 32 - 1,
|
|
bitrange(p + 4, l, n));
|
|
p += (4 + l * 4);
|
|
}
|
|
n += l * 32 + i * 32;
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
case NI_QTYPE_DNSNAME:
|
|
proto_tree_add_text(tree, NullTVB, offset + sizeof(*ni),
|
|
sizeof(gint32), "TTL: %d", (gint32)pntohl(ni + 1));
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni) + sizeof(guint32), END_OF_FRAME,
|
|
"DNS labels");
|
|
field_tree = proto_item_add_subtree(tf, ett_nodeinfo_nodedns);
|
|
n = pi.captured_len;
|
|
i = offset + sizeof(*ni) + sizeof(guint32);
|
|
while (i < pi.captured_len) {
|
|
l = get_dns_name(pd, i, offset + sizeof(*ni), dname,
|
|
sizeof(dname));
|
|
if (IS_DATA_IN_FRAME(i + l) && pd[i + l] == 0) {
|
|
l++;
|
|
proto_tree_add_text(field_tree, NullTVB, i, l,
|
|
"DNS label: %s (truncated)", dname);
|
|
} else {
|
|
proto_tree_add_text(field_tree, NullTVB, i, l,
|
|
"DNS label: %s", dname);
|
|
}
|
|
i += l;
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
case NI_QTYPE_NODEADDR:
|
|
n = pi.captured_len - (offset + sizeof(*ni));
|
|
n /= sizeof(struct e_in6_addr) + sizeof(gint32);;
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni), END_OF_FRAME, "IPv6 node addresses");
|
|
field_tree = proto_item_add_subtree(tf, ett_nodeinfo_node6);
|
|
p = (u_char *)(ni + 1);
|
|
for (i = 0; i < n; i++) {
|
|
proto_tree_add_text(field_tree, NullTVB,
|
|
p - pd, sizeof(struct e_in6_addr) + sizeof(gint32),
|
|
"%s (TTL %d)", ip6_to_str((struct e_in6_addr *)p),
|
|
(gint32)pntohl(p + sizeof(struct e_in6_addr)));
|
|
p += sizeof(struct e_in6_addr) + sizeof(gint32);
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
case NI_QTYPE_IPV4ADDR:
|
|
n = pi.captured_len - (offset + sizeof(*ni));
|
|
n /= sizeof(guint32);
|
|
tf = proto_tree_add_text(tree, NullTVB,
|
|
offset + sizeof(*ni), END_OF_FRAME, "IPv4 node addresses");
|
|
field_tree = proto_item_add_subtree(tf, ett_nodeinfo_node4);
|
|
p = (u_char *)(ni + 1);
|
|
for (i = 0; i < n; i++) {
|
|
proto_tree_add_text(field_tree, NullTVB,
|
|
p - pd, sizeof(guint32), "%s", ip_to_str(p));
|
|
p += sizeof(guint32);
|
|
}
|
|
off = pi.captured_len - offset;
|
|
break;
|
|
}
|
|
}
|
|
nodata:;
|
|
|
|
/* the rest of data */
|
|
old_dissect_data(pd, offset + off, fd, tree);
|
|
}
|
|
|
|
static void
|
|
dissect_rrenum(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
|
|
{
|
|
proto_tree *field_tree, *opt_tree;
|
|
proto_item *tf;
|
|
struct icmp6_router_renum *rr = (struct icmp6_router_renum *)&pd[offset];
|
|
struct rr_pco_match *match;
|
|
struct rr_pco_use *use;
|
|
int flagoff, off, l;
|
|
|
|
proto_tree_add_text(tree, NullTVB,
|
|
offset + offsetof(struct icmp6_router_renum, rr_seqnum), 4,
|
|
"Sequence number: 0x%08x", pntohl(&rr->rr_seqnum));
|
|
proto_tree_add_text(tree, NullTVB,
|
|
offset + offsetof(struct icmp6_router_renum, rr_segnum), 1,
|
|
"Segment number: 0x%02x", rr->rr_segnum);
|
|
|
|
flagoff = offset + offsetof(struct icmp6_router_renum, rr_flags);
|
|
tf = proto_tree_add_text(tree, NullTVB, flagoff, 1,
|
|
"Flags: 0x%02x", pd[flagoff]);
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff], 0x80, 8,
|
|
"Test command", "Not test command"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff], 0x40, 8,
|
|
"Result requested", "Result not requested"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff], 0x20, 8,
|
|
"All interfaces", "Not all interfaces"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff], 0x10, 8,
|
|
"Site specific", "Not site specific"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff], 0x08, 8,
|
|
"Processed previously", "Complete result"));
|
|
|
|
proto_tree_add_text(tree, NullTVB,
|
|
offset + offsetof(struct icmp6_router_renum, rr_maxdelay), 2,
|
|
"Max delay: 0x%04x", pntohs(&rr->rr_maxdelay));
|
|
old_dissect_data(pd, offset + sizeof(*rr), fd, tree); /*XXX*/
|
|
|
|
if (rr->rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND) {
|
|
off = offset + sizeof(*rr);
|
|
match = (struct rr_pco_match *)&pd[off];
|
|
tf = proto_tree_add_text(tree, NullTVB, off, sizeof(*match),
|
|
"Match-Prefix: %s/%u (%u-%u)", ip6_to_str(&match->rpm_prefix),
|
|
match->rpm_matchlen, match->rpm_minlen, match->rpm_maxlen);
|
|
opt_tree = proto_item_add_subtree(tf, ett_icmpv6opt);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_code),
|
|
sizeof(match->rpm_code), "OpCode: %s (%u)",
|
|
val_to_str(match->rpm_code, names_rrenum_matchcode, "Unknown"),
|
|
match->rpm_code);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_len),
|
|
sizeof(match->rpm_len), "OpLength: %u (%u octets)",
|
|
match->rpm_len, match->rpm_len * 8);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_ordinal),
|
|
sizeof(match->rpm_ordinal), "Ordinal: %u", match->rpm_ordinal);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_matchlen),
|
|
sizeof(match->rpm_matchlen), "MatchLen: %u", match->rpm_matchlen);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_minlen),
|
|
sizeof(match->rpm_minlen), "MinLen: %u", match->rpm_minlen);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_maxlen),
|
|
sizeof(match->rpm_maxlen), "MaxLen: %u", match->rpm_maxlen);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_match, rpm_prefix),
|
|
sizeof(match->rpm_prefix), "MatchPrefix: %s",
|
|
ip6_to_str(&match->rpm_prefix));
|
|
|
|
off += sizeof(*match);
|
|
use = (struct rr_pco_use *)&pd[off];
|
|
for (l = match->rpm_len * 8 - sizeof(*match);
|
|
l >= sizeof(*use); l -= sizeof(*use), off += sizeof(*use)) {
|
|
tf = proto_tree_add_text(tree, NullTVB, off, sizeof(*use),
|
|
"Use-Prefix: %s/%u (keep %u)", ip6_to_str(&use->rpu_prefix),
|
|
use->rpu_uselen, use->rpu_keeplen);
|
|
opt_tree = proto_item_add_subtree(tf, ett_icmpv6opt);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_uselen),
|
|
sizeof(use->rpu_uselen), "UseLen: %u", use->rpu_uselen);
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_keeplen),
|
|
sizeof(use->rpu_keeplen), "KeepLen: %u", use->rpu_keeplen);
|
|
tf = proto_tree_add_text(opt_tree, NullTVB,
|
|
flagoff = off + offsetof(struct rr_pco_use, rpu_ramask),
|
|
sizeof(use->rpu_ramask), "FlagMask: 0x%x", use->rpu_ramask);
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_RAFLAGS_ONLINK, 8,
|
|
"Onlink", "Not onlink"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_RAFLAGS_AUTO, 8,
|
|
"Auto", "Not auto"));
|
|
tf = proto_tree_add_text(opt_tree, NullTVB,
|
|
flagoff = off + offsetof(struct rr_pco_use, rpu_raflags),
|
|
sizeof(use->rpu_raflags), "RAFlags: 0x%x", use->rpu_raflags);
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_RAFLAGS_ONLINK, 8,
|
|
"Onlink", "Not onlink"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 1, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_RAFLAGS_AUTO, 8, "Auto", "Not auto"));
|
|
if (pntohl(&use->rpu_vltime) == 0xffffffff)
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_vltime),
|
|
sizeof(use->rpu_vltime), "Valid Lifetime: infinity");
|
|
else
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_vltime),
|
|
sizeof(use->rpu_vltime), "Valid Lifetime: %u",
|
|
pntohl(&use->rpu_vltime));
|
|
if (pntohl(&use->rpu_pltime) == 0xffffffff)
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_pltime),
|
|
sizeof(use->rpu_pltime), "Preferred Lifetime: infinity");
|
|
else
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_pltime),
|
|
sizeof(use->rpu_pltime), "Preferred Lifetime: %u",
|
|
pntohl(&use->rpu_pltime));
|
|
tf = proto_tree_add_text(opt_tree, NullTVB,
|
|
flagoff = off + offsetof(struct rr_pco_use, rpu_flags),
|
|
sizeof(use->rpu_flags), "Flags: 0x%08x",
|
|
pntohl(&use->rpu_flags));
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME, 32,
|
|
"Decrement valid lifetime", "No decrement valid lifetime"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(pd[flagoff],
|
|
ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME, 32,
|
|
"Decrement preferred lifetime",
|
|
"No decrement preferred lifetime"));
|
|
proto_tree_add_text(opt_tree, NullTVB,
|
|
off + offsetof(struct rr_pco_use, rpu_prefix),
|
|
sizeof(use->rpu_prefix), "UsePrefix: %s",
|
|
ip6_to_str(&use->rpu_prefix));
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_icmpv6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
|
|
{
|
|
proto_tree *icmp6_tree, *field_tree;
|
|
proto_item *ti, *tf = NULL;
|
|
struct icmp6_hdr *dp;
|
|
struct icmp6_nodeinfo *ni = NULL;
|
|
char *codename, *typename;
|
|
char *colcodename, *coltypename;
|
|
int len;
|
|
|
|
OLD_CHECK_DISPLAY_AS_DATA(proto_icmpv6, pd, offset, fd, tree);
|
|
|
|
dp = (struct icmp6_hdr *)&pd[offset];
|
|
codename = typename = colcodename = coltypename = "Unknown";
|
|
len = sizeof(*dp);
|
|
switch (dp->icmp6_type) {
|
|
case ICMP6_DST_UNREACH:
|
|
typename = coltypename = "Unreachable";
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_DST_UNREACH_NOROUTE:
|
|
codename = colcodename = "Route unreachable";
|
|
break;
|
|
case ICMP6_DST_UNREACH_ADMIN:
|
|
codename = colcodename = "Administratively prohibited";
|
|
break;
|
|
case ICMP6_DST_UNREACH_NOTNEIGHBOR:
|
|
codename = colcodename = "Not a neighbor";
|
|
break;
|
|
case ICMP6_DST_UNREACH_ADDR:
|
|
codename = colcodename = "Address unreachable";
|
|
break;
|
|
case ICMP6_DST_UNREACH_NOPORT:
|
|
codename = colcodename = "Port unreachable";
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_PACKET_TOO_BIG:
|
|
typename = coltypename = "Too big";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ICMP6_TIME_EXCEEDED:
|
|
typename = coltypename = "Time exceeded";
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_TIME_EXCEED_TRANSIT:
|
|
codename = colcodename = "In-transit";
|
|
break;
|
|
case ICMP6_TIME_EXCEED_REASSEMBLY:
|
|
codename = colcodename = "Reassembly";
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_PARAM_PROB:
|
|
typename = coltypename = "Parameter problem";
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_PARAMPROB_HEADER:
|
|
codename = colcodename = "Header";
|
|
break;
|
|
case ICMP6_PARAMPROB_NEXTHEADER:
|
|
codename = colcodename = "Next header";
|
|
break;
|
|
case ICMP6_PARAMPROB_OPTION:
|
|
codename = colcodename = "Option";
|
|
break;
|
|
}
|
|
break;
|
|
case ICMP6_ECHO_REQUEST:
|
|
typename = coltypename = "Echo request";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ICMP6_ECHO_REPLY:
|
|
typename = coltypename = "Echo reply";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ICMP6_MEMBERSHIP_QUERY:
|
|
typename = coltypename = "Multicast listener query";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ICMP6_MEMBERSHIP_REPORT:
|
|
typename = coltypename = "Multicast listener report";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ICMP6_MEMBERSHIP_REDUCTION:
|
|
typename = coltypename = "Multicast listener done";
|
|
codename = colcodename = NULL;
|
|
break;
|
|
case ND_ROUTER_SOLICIT:
|
|
typename = coltypename = "Router solicitation";
|
|
codename = colcodename = NULL;
|
|
len = sizeof(struct nd_router_solicit);
|
|
break;
|
|
case ND_ROUTER_ADVERT:
|
|
typename = coltypename = "Router advertisement";
|
|
codename = colcodename = NULL;
|
|
len = sizeof(struct nd_router_advert);
|
|
break;
|
|
case ND_NEIGHBOR_SOLICIT:
|
|
typename = coltypename = "Neighbor solicitation";
|
|
codename = colcodename = NULL;
|
|
len = sizeof(struct nd_neighbor_solicit);
|
|
break;
|
|
case ND_NEIGHBOR_ADVERT:
|
|
typename = coltypename = "Neighbor advertisement";
|
|
codename = colcodename = NULL;
|
|
len = sizeof(struct nd_neighbor_advert);
|
|
break;
|
|
case ND_REDIRECT:
|
|
typename = coltypename = "Redirect";
|
|
codename = colcodename = NULL;
|
|
len = sizeof(struct nd_redirect);
|
|
break;
|
|
case ICMP6_ROUTER_RENUMBERING:
|
|
typename = coltypename = "Router renumbering";
|
|
switch (dp->icmp6_code) {
|
|
case ICMP6_ROUTER_RENUMBERING_COMMAND:
|
|
codename = colcodename = "Command";
|
|
break;
|
|
case ICMP6_ROUTER_RENUMBERING_RESULT:
|
|
codename = colcodename = "Result";
|
|
break;
|
|
case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET:
|
|
codename = colcodename = "Sequence number reset";
|
|
break;
|
|
}
|
|
len = sizeof(struct icmp6_router_renum);
|
|
break;
|
|
case ICMP6_NI_QUERY:
|
|
case ICMP6_NI_REPLY:
|
|
ni = (struct icmp6_nodeinfo *)dp;
|
|
if (ni->ni_type == ICMP6_NI_QUERY) {
|
|
typename = coltypename = "Node information query";
|
|
switch (ni->ni_code) {
|
|
case ICMP6_NI_SUBJ_IPV6:
|
|
codename = "Query subject = IPv6 addresses";
|
|
break;
|
|
case ICMP6_NI_SUBJ_FQDN:
|
|
if (IS_DATA_IN_FRAME(offset + sizeof(*ni)))
|
|
codename = "Query subject = DNS name";
|
|
else
|
|
codename = "Query subject = empty";
|
|
break;
|
|
case ICMP6_NI_SUBJ_IPV4:
|
|
codename = "Query subject = IPv4 addresses";
|
|
break;
|
|
}
|
|
} else {
|
|
typename = coltypename = "Node information reply";
|
|
switch (ni->ni_code) {
|
|
case ICMP6_NI_SUCCESS:
|
|
codename = "Successful";
|
|
break;
|
|
case ICMP6_NI_REFUSED:
|
|
codename = "Refused";
|
|
break;
|
|
case ICMP6_NI_UNKNOWN:
|
|
codename = "Unknown query type";
|
|
break;
|
|
}
|
|
}
|
|
colcodename = val_to_str(pntohs(&ni->ni_qtype), names_nodeinfo_qtype,
|
|
"Unknown");
|
|
len = sizeof(struct icmp6_nodeinfo);
|
|
break;
|
|
}
|
|
|
|
if (check_col(fd, COL_PROTOCOL))
|
|
col_add_str(fd, COL_PROTOCOL, "ICMPv6");
|
|
if (check_col(fd, COL_INFO)) {
|
|
char typebuf[256], codebuf[256];
|
|
|
|
if (coltypename && strcmp(coltypename, "Unknown") == 0) {
|
|
snprintf(typebuf, sizeof(typebuf), "Unknown (0x%02x)",
|
|
dp->icmp6_type);
|
|
coltypename = typebuf;
|
|
}
|
|
if (colcodename && strcmp(colcodename, "Unknown") == 0) {
|
|
snprintf(codebuf, sizeof(codebuf), "Unknown (0x%02x)",
|
|
dp->icmp6_code);
|
|
colcodename = codebuf;
|
|
}
|
|
if (colcodename) {
|
|
col_add_fstr(fd, COL_INFO, "%s (%s)", coltypename, colcodename);
|
|
} else {
|
|
col_add_fstr(fd, COL_INFO, "%s", coltypename);
|
|
}
|
|
}
|
|
|
|
if (tree) {
|
|
/* !!! specify length */
|
|
ti = proto_tree_add_item(tree, proto_icmpv6, NullTVB, offset, len, FALSE);
|
|
icmp6_tree = proto_item_add_subtree(ti, ett_icmpv6);
|
|
|
|
proto_tree_add_uint_format(icmp6_tree, hf_icmpv6_type, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_type), 1,
|
|
dp->icmp6_type,
|
|
"Type: 0x%02x (%s)", dp->icmp6_type, typename);
|
|
if (codename) {
|
|
proto_tree_add_uint_format(icmp6_tree, hf_icmpv6_code, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_code), 1,
|
|
dp->icmp6_code,
|
|
"Code: 0x%02x (%s)", dp->icmp6_code, codename);
|
|
} else {
|
|
proto_tree_add_uint_format(icmp6_tree, hf_icmpv6_code, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_code), 1,
|
|
dp->icmp6_code,
|
|
"Code: 0x%02x", dp->icmp6_code);
|
|
}
|
|
proto_tree_add_uint(icmp6_tree, hf_icmpv6_checksum, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_cksum), 2,
|
|
(guint16)htons(dp->icmp6_cksum));
|
|
|
|
/* decode... */
|
|
switch (dp->icmp6_type) {
|
|
case ICMP6_DST_UNREACH:
|
|
case ICMP6_TIME_EXCEEDED:
|
|
/* tiny sanity check */
|
|
if ((pd[offset + sizeof(*dp)] & 0xf0) == 0x60) {
|
|
dissect_ipv6(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
} else {
|
|
old_dissect_data(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
}
|
|
break;
|
|
case ICMP6_PACKET_TOO_BIG:
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_mtu), 4,
|
|
"MTU: %d", pntohl(&dp->icmp6_mtu));
|
|
/* tiny sanity check */
|
|
if ((pd[offset + sizeof(*dp)] & 0xf0) == 0x60) {
|
|
dissect_ipv6(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
} else {
|
|
old_dissect_data(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
}
|
|
break;
|
|
case ICMP6_PARAM_PROB:
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_pptr), 4,
|
|
"Problem pointer: 0x%04x", pntohl(&dp->icmp6_pptr));
|
|
/* tiny sanity check */
|
|
if ((pd[offset + sizeof(*dp)] & 0xf0) == 0x60) {
|
|
dissect_ipv6(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
} else {
|
|
old_dissect_data(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
}
|
|
break;
|
|
case ICMP6_ECHO_REQUEST:
|
|
case ICMP6_ECHO_REPLY:
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_id), 2,
|
|
"ID: 0x%04x", (guint16)ntohs(dp->icmp6_id));
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_seq), 2,
|
|
"Sequence: 0x%04x", (guint16)ntohs(dp->icmp6_seq));
|
|
old_dissect_data(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
break;
|
|
case ICMP6_MEMBERSHIP_QUERY:
|
|
case ICMP6_MEMBERSHIP_REPORT:
|
|
case ICMP6_MEMBERSHIP_REDUCTION:
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_hdr, icmp6_maxdelay), 2,
|
|
"Maximum response delay: %d",
|
|
(guint16)ntohs(dp->icmp6_maxdelay));
|
|
proto_tree_add_text(icmp6_tree, NullTVB, offset + sizeof(*dp), 16,
|
|
"Multicast Address: %s",
|
|
ip6_to_str((struct e_in6_addr *)(dp + 1)));
|
|
break;
|
|
case ND_ROUTER_SOLICIT:
|
|
dissect_icmpv6opt(pd, offset + sizeof(*dp), fd, icmp6_tree);
|
|
break;
|
|
case ND_ROUTER_ADVERT:
|
|
{
|
|
struct nd_router_advert *ra = (struct nd_router_advert *)dp;
|
|
int flagoff;
|
|
guint32 ra_flags;
|
|
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_router_advert, nd_ra_curhoplimit),
|
|
1, "Cur hop limit: %d", ra->nd_ra_curhoplimit);
|
|
|
|
flagoff = offset + offsetof(struct nd_router_advert, nd_ra_flags_reserved);
|
|
ra_flags = pntohl(&pd[flagoff]);
|
|
tf = proto_tree_add_text(icmp6_tree, NullTVB, flagoff, 4, "Flags: 0x%08x", ra_flags);
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(ra_flags,
|
|
0x80000000, 32, "Managed", "Not managed"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(ra_flags,
|
|
0x40000000, 32, "Other", "Not other"));
|
|
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_router_advert, nd_ra_router_lifetime),
|
|
2, "Router lifetime: %d",
|
|
(guint16)ntohs(ra->nd_ra_router_lifetime));
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_router_advert, nd_ra_reachable), 4,
|
|
"Reachable time: %d", pntohl(&ra->nd_ra_reachable));
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_router_advert, nd_ra_retransmit), 4,
|
|
"Retrans time: %d", pntohl(&ra->nd_ra_retransmit));
|
|
dissect_icmpv6opt(pd, offset + sizeof(struct nd_router_advert), fd, icmp6_tree);
|
|
break;
|
|
}
|
|
case ND_NEIGHBOR_SOLICIT:
|
|
{
|
|
struct nd_neighbor_solicit *ns = (struct nd_neighbor_solicit *)dp;
|
|
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_neighbor_solicit, nd_ns_target), 16,
|
|
#ifdef INET6
|
|
"Target: %s (%s)",
|
|
get_hostname6(&ns->nd_ns_target),
|
|
#else
|
|
"Target: %s",
|
|
#endif
|
|
ip6_to_str(&ns->nd_ns_target));
|
|
|
|
dissect_icmpv6opt(pd, offset + sizeof(*ns), fd, icmp6_tree);
|
|
break;
|
|
}
|
|
case ND_NEIGHBOR_ADVERT:
|
|
{
|
|
int flagoff, targetoff;
|
|
guint32 na_flags;
|
|
struct e_in6_addr *na_target_p;
|
|
|
|
flagoff = offset + offsetof(struct nd_neighbor_advert, nd_na_flags_reserved);
|
|
na_flags = pntohl(&pd[flagoff]);
|
|
|
|
tf = proto_tree_add_text(icmp6_tree, NullTVB, flagoff, 4, "Flags: 0x%08x", na_flags);
|
|
field_tree = proto_item_add_subtree(tf, ett_icmpv6flag);
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(na_flags,
|
|
0x80000000, 32, "Router", "Not router"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(na_flags,
|
|
0x40000000, 32, "Solicited", "Not adverted"));
|
|
proto_tree_add_text(field_tree, NullTVB, flagoff, 4, "%s",
|
|
decode_boolean_bitfield(na_flags,
|
|
0x20000000, 32, "Override", "Not override"));
|
|
|
|
targetoff = offset + offsetof(struct nd_neighbor_advert, nd_na_target);
|
|
na_target_p = (struct e_in6_addr*) &pd[targetoff];
|
|
proto_tree_add_text(icmp6_tree, NullTVB, targetoff, 16,
|
|
#ifdef INET6
|
|
"Target: %s (%s)",
|
|
get_hostname6(na_target_p),
|
|
#else
|
|
"Target: %s",
|
|
#endif
|
|
ip6_to_str(na_target_p));
|
|
|
|
dissect_icmpv6opt(pd, offset + sizeof(struct nd_neighbor_advert), fd, icmp6_tree);
|
|
break;
|
|
}
|
|
case ND_REDIRECT:
|
|
{
|
|
struct nd_redirect *rd = (struct nd_redirect *)dp;
|
|
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_redirect, nd_rd_target), 16,
|
|
#ifdef INET6
|
|
"Target: %s (%s)",
|
|
get_hostname6(&rd->nd_rd_target),
|
|
#else
|
|
"Target: %s",
|
|
#endif
|
|
ip6_to_str(&rd->nd_rd_target));
|
|
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct nd_redirect, nd_rd_dst), 16,
|
|
#ifdef INET6
|
|
"Destination: %s (%s)",
|
|
get_hostname6(&rd->nd_rd_dst),
|
|
#else
|
|
"Destination: %s",
|
|
#endif
|
|
ip6_to_str(&rd->nd_rd_dst));
|
|
|
|
dissect_icmpv6opt(pd, offset + sizeof(*rd), fd, icmp6_tree);
|
|
break;
|
|
}
|
|
case ICMP6_ROUTER_RENUMBERING:
|
|
dissect_rrenum(pd, offset, fd, icmp6_tree);
|
|
break;
|
|
case ICMP6_NI_QUERY:
|
|
case ICMP6_NI_REPLY:
|
|
ni = (struct icmp6_nodeinfo *)dp;
|
|
proto_tree_add_text(icmp6_tree, NullTVB,
|
|
offset + offsetof(struct icmp6_nodeinfo, ni_qtype),
|
|
sizeof(ni->ni_qtype),
|
|
"Query type: 0x%04x (%s)", pntohs(&ni->ni_qtype),
|
|
val_to_str(pntohs(&ni->ni_qtype), names_nodeinfo_qtype,
|
|
"Unknown"));
|
|
dissect_nodeinfo(pd, offset, fd, icmp6_tree);
|
|
break;
|
|
default:
|
|
old_dissect_data(pd, offset + sizeof(*dp), fd, tree);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_icmpv6(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_icmpv6_type,
|
|
{ "Type", "icmpv6.type", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"" }},
|
|
{ &hf_icmpv6_code,
|
|
{ "Code", "icmpv6.code", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"" }},
|
|
{ &hf_icmpv6_checksum,
|
|
{ "Checksum", "icmpv6.checksum", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"" }}
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_icmpv6,
|
|
&ett_icmpv6opt,
|
|
&ett_icmpv6flag,
|
|
&ett_nodeinfo_flag,
|
|
&ett_nodeinfo_subject4,
|
|
&ett_nodeinfo_subject6,
|
|
&ett_nodeinfo_node4,
|
|
&ett_nodeinfo_node6,
|
|
&ett_nodeinfo_nodebitmap,
|
|
&ett_nodeinfo_nodedns,
|
|
};
|
|
|
|
proto_icmpv6 = proto_register_protocol("Internet Control Message Protocol v6",
|
|
"icmpv6");
|
|
proto_register_field_array(proto_icmpv6, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_icmpv6(void)
|
|
{
|
|
old_dissector_add("ip.proto", IP_PROTO_ICMPV6, dissect_icmpv6);
|
|
}
|