/* packet-ipv6.c
* Routines for IPv6 packet disassembly
*
- * $Id: packet-ipv6.c,v 1.3 1998/09/27 22:12:30 gerald Exp $
+ * $Id: packet-ipv6.c,v 1.51 2001/01/23 02:49:55 gerald Exp $
*
* Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@zing.org>
+ * By Gerald Combs <gerald@ethereal.com>
+ *
* Copyright 1998 Gerald Combs
*
- *
+ * MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@siemens.hr>
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
# include "config.h"
#endif
-#include <gtk/gtk.h>
-#include <pcap.h>
-
-#include <stdio.h>
-
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
+#ifdef HAVE_SYS_SOCKET_h
+#include <sys/socket.h>
+#endif
+
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
-#include "ethereal.h"
+#include <string.h>
+#include <stdio.h>
+#include <glib.h>
+#include "etypes.h"
+#include "ppptypes.h"
+#include "aftypes.h"
#include "packet.h"
+#include "packet-ip.h"
+#include "packet-ipsec.h"
#include "packet-ipv6.h"
-#include "etypes.h"
+#include "packet-tcp.h"
+#include "packet-udp.h"
+#include "resolv.h"
-void
-dissect_ipv6(const u_char *pd, int offset, frame_data *fd, GtkTree *tree) {
- GtkWidget *ipv6_tree, *ti;
-
- e_ipv6_header ipv6;
-
- memcpy(&ipv6, (void *) &pd[offset], 8);
-
- if (fd->win_info[COL_NUM]) {
- switch(ipv6.next_header){
- /*
- case IP_PROTO_ICMP:
- case IP_PROTO_IGMP:
- case IP_PROTO_TCP:
- case IP_PROTO_UDP:
- case IP_PROTO_OSPF:
- */
- /* Names are set in the associated dissect_* routines */
- /* break; */
- default:
- strcpy(fd->win_info[COL_PROTOCOL], "IPv6");
- sprintf(fd->win_info[COL_INFO], "IPv6 support is still under development (%d)", ipv6.next_header);
- }
+/*
+ * NOTE: ipv6.nxt is not very useful as we will have chained header.
+ * now testing ipv6.final, but it raises SEGV.
+#define TEST_FINALHDR
+ */
+
+static int proto_ipv6 = -1;
+static int hf_ipv6_version = -1;
+static int hf_ipv6_class = -1;
+static int hf_ipv6_flow = -1;
+static int hf_ipv6_plen = -1;
+static int hf_ipv6_nxt = -1;
+static int hf_ipv6_hlim = -1;
+static int hf_ipv6_src = -1;
+static int hf_ipv6_dst = -1;
+static int hf_ipv6_addr = -1;
+#ifdef TEST_FINALHDR
+static int hf_ipv6_final = -1;
+#endif
+
+/* BT INSERT BEGIN */
+static int hf_ipv6_mipv6_type = -1;
+static int hf_ipv6_mipv6_length = -1;
+static int hf_ipv6_mipv6_a_flag = -1;
+static int hf_ipv6_mipv6_h_flag = -1;
+static int hf_ipv6_mipv6_r_flag = -1;
+static int hf_ipv6_mipv6_d_flag = -1;
+static int hf_ipv6_mipv6_m_flag = -1;
+static int hf_ipv6_mipv6_b_flag = -1;
+static int hf_ipv6_mipv6_prefix_length = -1;
+static int hf_ipv6_mipv6_sequence_number = -1;
+static int hf_ipv6_mipv6_life_time = -1;
+static int hf_ipv6_mipv6_status = -1;
+static int hf_ipv6_mipv6_refresh = -1;
+static int hf_ipv6_mipv6_home_address = -1;
+static int hf_ipv6_mipv6_sub_type = -1;
+static int hf_ipv6_mipv6_sub_length = -1;
+static int hf_ipv6_mipv6_sub_unique_ID = -1;
+static int hf_ipv6_mipv6_sub_alternative_COA = -1;
+/* BT INSERT END */
+
+static gint ett_ipv6 = -1;
+
+#ifndef offsetof
+#define offsetof(type, member) ((size_t)(&((type *)0)->member))
+#endif
+
+static int
+dissect_routing6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+ struct ip6_rthdr rt;
+ int len;
+ proto_tree *rthdr_tree;
+ proto_item *ti;
+ char buf[sizeof(struct ip6_rthdr0) + sizeof(struct e_in6_addr) * 23];
+
+ memcpy(&rt, (void *) &pd[offset], sizeof(rt));
+ len = (rt.ip6r_len + 1) << 3;
+
+ if (tree) {
+ /* !!! specify length */
+ ti = proto_tree_add_text(tree, NullTVB, offset, len,
+ "Routing Header, Type %u", rt.ip6r_type);
+ rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
+
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_rthdr, ip6r_nxt), 1,
+ "Next header: %s (0x%02x)", ipprotostr(rt.ip6r_nxt), rt.ip6r_nxt);
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_rthdr, ip6r_len), 1,
+ "Length: %u (%d bytes)", rt.ip6r_len, len);
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_rthdr, ip6r_type), 1,
+ "Type: %u", rt.ip6r_type);
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_rthdr, ip6r_segleft), 1,
+ "Segments left: %u", rt.ip6r_segleft);
+
+ if (rt.ip6r_type == 0 && len <= sizeof(buf)) {
+ struct e_in6_addr *a;
+ int n;
+ struct ip6_rthdr0 *rt0;
+
+ memcpy(buf, (void *) &pd[offset], len);
+ rt0 = (struct ip6_rthdr0 *)buf;
+ for (a = rt0->ip6r0_addr, n = 0;
+ a < (struct e_in6_addr *)(buf + len);
+ a++, n++) {
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_rthdr0, ip6r0_addr) + n * sizeof(struct e_in6_addr),
+ sizeof(struct e_in6_addr),
+#ifdef INET6
+ "address %d: %s (%s)",
+ n, get_hostname6(a), ip6_to_str(a)
+#else
+ "address %d: %s", n, ip6_to_str(a)
+#endif
+ );
+ }
+ }
+
+ /* decode... */
+ }
+
+ return len;
+}
+
+static int
+dissect_frag6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree,
+ int *fragstart) {
+ struct ip6_frag frag;
+ int len;
+ proto_item *ti;
+ proto_tree *rthdr_tree;
+
+ memcpy(&frag, (void *) &pd[offset], sizeof(frag));
+ len = sizeof(frag);
+ frag.ip6f_offlg = ntohs(frag.ip6f_offlg);
+ *fragstart = frag.ip6f_offlg & IP6F_OFF_MASK;
+ if (check_col(fd, COL_INFO)) {
+ col_add_fstr(fd, COL_INFO,
+ "IPv6 fragment (nxt=%s (0x%02x) off=%u id=0x%x)",
+ ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt,
+ *fragstart, frag.ip6f_ident);
+ }
+ if (tree) {
+ ti = proto_tree_add_text(tree, NullTVB, offset, len,
+ "Fragmention Header");
+ rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
+
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_frag, ip6f_nxt), 1,
+ "Next header: %s (0x%02x)",
+ ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt);
+
+ #if 0
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_frag, ip6f_reserved), 1,
+ "Reserved: %u",
+ frag.ip6f_reserved);
+ #endif
+
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
+ "Offset: %u",
+ frag.ip6f_offlg & IP6F_OFF_MASK);
+
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
+ "More fragments: %s",
+ frag.ip6f_offlg & IP6F_MORE_FRAG ?
+ "Yes" : "No");
+
+ proto_tree_add_text(rthdr_tree, NullTVB,
+ offset + offsetof(struct ip6_frag, ip6f_ident), 4,
+ "Identification: 0x%08x",
+ frag.ip6f_ident);
+ }
+ return len;
+}
+
+/* BT INSERT BEGIN */
+static int
+dissect_mipv6_ba(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset) {
+ guint8 status, len=0;
+ gchar status_text[80]="";
+ 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 Acknowledgement", 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)>11)
+ 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;
+ status = tvb_get_guint8(tvb,offset+len);
+ switch (status){
+ case BA_OK:
+ strcpy(status_text,"- Binding Update accepted");
+ break;
+ case BA_REAS_UNSPEC:
+ strcpy(status_text,"- Binding Update was rejected - Reason unspecified");
+ break;
+ case BA_ADMIN_PROH:
+ strcpy(status_text,"- Binding Update was rejected - Administratively prohibited");
+ break;
+ case BA_INSUF_RES:
+ strcpy(status_text,"- Binding Update was rejected - Insufficient resources");
+ break;
+ case BA_NO_HR:
+ strcpy(status_text,"- Binding Update was rejected - Home registration not supported");
+ break;
+ case BA_NO_SUBNET:
+ strcpy(status_text,"- Binding Update was rejected - Not home subnet");
+ break;
+ case BA_ERR_ID_LEN:
+ strcpy(status_text,"- Binding Update was rejected - Incorrect interface identifier length");
+ break;
+ case BA_NO_HA:
+ strcpy(status_text,"- Binding Update was rejected - Not home agent for this mobile node");
+ break;
+ case BA_DUPL_ADDR:
+ strcpy(status_text,"- Binding Update was rejected - Duplicate Address Detection failed");
+ break;
+ default:
+ strcpy(status_text,"");
+ break;
+ }
+ if ((status>128)&&(strlen(status_text)==0))
+ strcpy(status_text,"- Binding Update was rejected");
+ proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_status, tvb, offset+len,
+ IP6_MIPv6_STATUS_LENGTH, tvb_get_guint8(tvb,offset+len),
+ "Status: %u %s", tvb_get_guint8(tvb,offset+len), status_text);
+ len+=IP6_MIPv6_STATUS_LENGTH;
+ proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sequence_number, tvb, offset+len,
+ IP6_MIPv6_SEQUENCE_NUMBER_LENGTH, tvb_get_ntohs(tvb,offset+len));
+ len+=IP6_MIPv6_SEQUENCE_NUMBER_LENGTH;
+ if (tvb_get_ntohl(tvb,offset+len)==0xffffffff)
+ {
+ proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_life_time, tvb, offset+len,
+ IP6_MIPv6_LIFE_TIME_LENGTH, tvb_get_ntohl(tvb,offset+len),
+ "Life Time: %u - Infinity", tvb_get_ntohl(tvb,offset+len));
+ } 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;
+ proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_refresh, tvb, offset+len,
+ IP6_MIPv6_REFRESH_LENGTH, tvb_get_ntohl(tvb,offset+len));
+ len+=IP6_MIPv6_REFRESH_LENGTH;
+ /* sub - options */
+ if (sub_options)
+ {
+ proto_tree_add_text(dstopt_tree, NullTVB, offset+len, 1, "Sub-Options");
+ }
+ return len;
+}
+
+static int
+dissect_mipv6_bu(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,
+ IP6_MIPv6_OPTION_TYPE_LENGTH, tvb_get_guint8(tvb,offset),
+ "Option Type: %u (0x%02x) - Binding Update", tvb_get_guint8(tvb,offset),
+ tvb_get_guint8(tvb,offset));
+ len+=IP6_MIPv6_OPTION_TYPE_LENGTH;
+ if (tvb_get_guint8(tvb,offset+len)>8)
+ 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_boolean(dstopt_tree, hf_ipv6_mipv6_a_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_h_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_r_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_d_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_m_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ proto_tree_add_boolean(dstopt_tree, hf_ipv6_mipv6_b_flag, tvb, offset+len,
+ IP6_MIPv6_FLAGS_LENGTH, tvb_get_guint8(tvb, offset+len));
+ len+=IP6_MIPv6_FLAGS_LENGTH;
+ proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_prefix_length, tvb, offset+len,
+ IP6_MIPv6_PREFIX_LENGTH_LENGTH, tvb_get_guint8(tvb,offset+len));
+ len+=IP6_MIPv6_PREFIX_LENGTH_LENGTH;
+ proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_sequence_number, tvb, offset+len,
+ IP6_MIPv6_SEQUENCE_NUMBER_LENGTH, tvb_get_ntohs(tvb,offset+len));
+ len+=IP6_MIPv6_SEQUENCE_NUMBER_LENGTH;
+ if (tvb_get_ntohl(tvb,offset+len)==0xffffffff)
+ {
+ proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_life_time, tvb, offset+len,
+ IP6_MIPv6_LIFE_TIME_LENGTH, tvb_get_ntohl(tvb,offset+len),
+ "Life Time: %u - Infinity", tvb_get_ntohl(tvb,offset+len));
+ } 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, NullTVB, 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, NullTVB, 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, NullTVB, 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;
+}
+/* BT INSERT END */
+
+static int
+dissect_opts(const u_char *pd, int offset, frame_data *fd, proto_tree *tree,
+ char *optname) {
+ struct ip6_ext ext;
+ int len;
+ proto_tree *dstopt_tree;
+ proto_item *ti;
+ u_char *p;
+
+ /* BT INSERT BEGIN */
+ tvbuff_t *tvb;
+ int mip_offset=0, delta=0;
+ /* BT INSERT END */
+
+ static const value_string rtalertvals[] = {
+ { IP6OPT_RTALERT_MLD, "MLD" },
+ { IP6OPT_RTALERT_RSVP, "RSVP" },
+ { 0, NULL },
+ };
+
+ memcpy(&ext, (void *) &pd[offset], sizeof(ext));
+ len = (ext.ip6e_len + 1) << 3;
+
+ /* BT INSERT BEGIN */
+ tvb = tvb_create_from_top(offset);
+ /* BT INSERT END */
+
+ if (tree) {
+ /* !!! specify length */
+ ti = proto_tree_add_text(tree, NullTVB, offset, len,
+ "%s Header ", optname);
+
+ dstopt_tree = proto_item_add_subtree(ti, ett_ipv6);
+
+ proto_tree_add_text(dstopt_tree, NullTVB,
+ 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, NullTVB,
+ offset + offsetof(struct ip6_ext, ip6e_len), 1,
+ "Length: %u (%d bytes)", ext.ip6e_len, len);
+
+ /* BT INSERT BEGIN */
+ mip_offset+=2;
+ /* BT INSERT END */
+
+ p = (u_char *)(pd + offset + 2);
+
+ while (p < pd + offset + len) {
+ switch (p[0]) {
+ case IP6OPT_PAD1:
+ proto_tree_add_text(dstopt_tree, NullTVB, p - pd, 1,
+ "Pad1");
+ p++;
+ /* BT INSERT BEGIN */
+ mip_offset++;
+ /* BT INSERT END */
+ break;
+ case IP6OPT_PADN:
+ proto_tree_add_text(dstopt_tree, NullTVB, p - pd, p[1] + 2,
+ "PadN: %u bytes", p[1] + 2);
+ p += p[1];
+ p += 2;
+ /* BT INSERT BEGIN */
+ mip_offset+=tvb_get_guint8(tvb,mip_offset+1)+2;
+ /* BT INSERT END */
+ break;
+ case IP6OPT_JUMBO:
+ if (p[1] == 4) {
+ proto_tree_add_text(dstopt_tree, NullTVB, p - pd, p[1] + 2,
+ "Jumbo payload: %u (%u bytes)",
+ pntohl(&p[2]), p[1] + 2);
+ } else {
+ proto_tree_add_text(dstopt_tree, NullTVB, p - pd, p[1] + 2,
+ "Jumbo payload: Invalid length (%u bytes)",
+ p[1] + 2);
+ }
+ p += p[1];
+ p += 2;
+ /* BT INSERT BEGIN */
+ mip_offset+=tvb_get_guint8(tvb,mip_offset+1)+2;
+ /* BT INSERT END */
+ break;
+ case IP6OPT_RTALERT:
+ {
+ char *rta;
+
+ if (p[1] == 2) {
+ rta = val_to_str(pntohs(&p[2]), rtalertvals,
+ "Unknown");
+ } else
+ rta = "Invalid length";
+ ti = proto_tree_add_text(dstopt_tree, NullTVB, p - pd, p[1] + 2,
+ "Router alert: %s (%u bytes)", rta, p[1] + 2);
+ p += p[1];
+ p += 2;
+ /* BT INSERT BEGIN */
+ mip_offset+=tvb_get_guint8(tvb,mip_offset+1)+2;
+ /* BT INSERT END */
+ break;
+ }
+ /* BT INSERT BEGIN */
+ 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;
+ }
+ /* BT INSERT END */
+ default:
+ p = (u_char *)(pd + offset + len);
+ break;
+ }
+ }
+
+ /* decode... */
+
+ }
+ return len;
+}
+
+static int
+dissect_hopopts(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+ return dissect_opts(pd, offset, fd, tree, "Hop-by-hop Option");
+}
+
+static int
+dissect_dstopts(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+ return dissect_opts(pd, offset, fd, tree, "Destination Option");
+}
+
+void
+dissect_ipv6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+ proto_tree *ipv6_tree;
+ proto_item *ti;
+ guint8 nxt;
+ int advance;
+ int poffset;
+ int frag;
+
+ struct ip6_hdr ipv6;
+
+ OLD_CHECK_DISPLAY_AS_DATA(proto_ipv6, pd, offset, fd, tree);
+
+ memcpy(&ipv6, (void *) &pd[offset], sizeof(ipv6));
+
+ pi.ipproto = ipv6.ip6_nxt; /* XXX make work TCP follow (ipproto = 6) */
+
+ SET_ADDRESS(&pi.net_src, AT_IPv6, 16, &pd[offset + IP6H_SRC]);
+ SET_ADDRESS(&pi.src, AT_IPv6, 16, &pd[offset + IP6H_SRC]);
+ SET_ADDRESS(&pi.net_dst, AT_IPv6, 16, &pd[offset + IP6H_DST]);
+ SET_ADDRESS(&pi.dst, AT_IPv6, 16, &pd[offset + IP6H_DST]);
+
if (tree) {
/* !!! specify length */
- ti = add_item_to_tree(GTK_WIDGET(tree), offset, 40,
- "Internet Protocol Version 6");
- ipv6_tree = gtk_tree_new();
- add_subtree(ti, ipv6_tree, ETT_IPv6);
+ ti = proto_tree_add_item(tree, proto_ipv6, NullTVB, offset, 40, FALSE);
+ ipv6_tree = proto_item_add_subtree(ti, ett_ipv6);
/* !!! warning: version also contains 4 Bit priority */
- add_item_to_tree(ipv6_tree, offset, 1, "Version: %d Priority: %d", ipv6.version >> 4 , ipv6.version & 15);
- add_item_to_tree(ipv6_tree, offset + 6, 1, "Next Header: %d", ipv6.next_header);
- add_item_to_tree(ipv6_tree, offset + 4, 2, "Payload Length: %d", ntohs(ipv6.payload_length));
+ proto_tree_add_uint(ipv6_tree, hf_ipv6_version, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_vfc), 1,
+ (ipv6.ip6_vfc >> 4) & 0x0f);
+
+
+ proto_tree_add_uint(ipv6_tree, hf_ipv6_class, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_flow), 4,
+ (guint8)((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, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_flow), 4,
+ (unsigned long)(ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK),
+ "Flowlabel: 0x%05lx",
+ (unsigned long)(ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK));
+
+ proto_tree_add_uint(ipv6_tree, hf_ipv6_plen, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_plen), 2,
+ ntohs(ipv6.ip6_plen));
+
+ proto_tree_add_uint_format(ipv6_tree, hf_ipv6_nxt, NullTVB,
+ 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, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_hlim), 1,
+ ipv6.ip6_hlim);
+
+ proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_src), 16,
+ ipv6.ip6_src.s6_addr8);
+ proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, NullTVB,
+ offset + offsetof(struct ip6_hdr, ip6_dst), 16,
+ ipv6.ip6_dst.s6_addr8);
+
+ proto_tree_add_ipv6_format(ipv6_tree, hf_ipv6_src, NullTVB,
+ 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, NullTVB,
+ 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) */
- offset += 40;
- switch (ipv6.next_header) {
- case IP_PROTO_ICMP:
- dissect_icmp(pd, offset, fd, tree);
- break;
- case IP_PROTO_IGMP:
- dissect_igmp(pd, offset, fd, tree);
- break;
- case IP_PROTO_TCP:
- dissect_tcp(pd, offset, fd, tree);
- break;
- case IP_PROTO_UDP:
- dissect_udp(pd, offset, fd, tree);
- break;
- case IP_PROTO_OSPF:
- dissect_ospf(pd, offset, fd, tree);
- break;
- default:
- dissect_data(pd, offset, fd, tree);
+ nxt = pd[poffset = offset + offsetof(struct ip6_hdr, ip6_nxt)];
+ offset += sizeof(struct ip6_hdr);
+ frag = 0;
+
+/* start out assuming this insn't fragmented */
+ pi.fragmented = FALSE;
+
+again:
+ switch (nxt) {
+ case IP_PROTO_HOPOPTS:
+ advance = dissect_hopopts(pd, offset, fd, tree);
+ nxt = pd[poffset = offset];
+ offset += advance;
+ goto again;
+ case IP_PROTO_ROUTING:
+ advance = dissect_routing6(pd, offset, fd, tree);
+ nxt = pd[poffset = offset];
+ offset += advance;
+ goto again;
+ case IP_PROTO_FRAGMENT:
+ pi.fragmented = TRUE;
+ advance = dissect_frag6(pd, offset, fd, tree, &frag);
+ nxt = pd[poffset = offset];
+ offset += advance;
+ goto again;
+ case IP_PROTO_AH:
+ advance = dissect_ah_old(pd, offset, fd, tree);
+ nxt = pd[poffset = offset];
+ offset += advance;
+ goto again;
+ case IP_PROTO_DSTOPTS:
+ advance = dissect_dstopts(pd, offset, fd, tree);
+ nxt = pd[poffset = offset];
+ offset += advance;
+ goto again;
+ }
+
+#ifdef TEST_FINALHDR
+ proto_tree_add_uint_hidden(ipv6_tree, hf_ipv6_final, NullTVB, poffset, 1, nxt);
+#endif
+ if (frag) {
+ /* fragmented */
+ if (check_col(fd, COL_PROTOCOL))
+ col_set_str(fd, COL_PROTOCOL, "IPv6");
+ /* COL_INFO was filled in by "dissect_frag6()" */
+ old_dissect_data(pd, offset, fd, tree);
+ } else {
+ /* do lookup with the subdissector table */
+ if (!old_dissector_try_port(ip_dissector_table, nxt, pd, offset, fd, tree)) {
+ /* Unknown protocol */
+ if (check_col(fd, COL_PROTOCOL))
+ col_set_str(fd, COL_PROTOCOL, "IPv6");
+ if (check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "%s (0x%02x)", ipprotostr(nxt),nxt);
+ old_dissect_data(pd, offset, fd, tree);
+ }
+ }
+}
+
+static void
+dissect_ipv6_none(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
+ /* BT INSERT BEGIN */
+ if (hf_ipv6_mipv6_length!=-1) {
+ if (check_col(fd, COL_PROTOCOL))
+ col_set_str(fd, COL_PROTOCOL, "IPv6");
+ if (check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "MobileIPv6 Destination Option");
+ } else {
+ /* BT INSERT END */
+ if (check_col(fd, COL_INFO))
+ col_add_fstr(fd, COL_INFO, "IPv6 no next header");
}
+ /* XXX - dissect the payload as padding? */
}
+void
+proto_register_ipv6(void)
+{
+ static hf_register_info hf[] = {
+ { &hf_ipv6_version,
+ { "Version", "ipv6.version",
+ FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
+ { &hf_ipv6_class,
+ { "Traffic class", "ipv6.class",
+ FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
+ { &hf_ipv6_flow,
+ { "Flowlabel", "ipv6.flow",
+ FT_UINT32, BASE_HEX, NULL, 0x0, "" }},
+ { &hf_ipv6_plen,
+ { "Payload length", "ipv6.plen",
+ FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
+ { &hf_ipv6_nxt,
+ { "Next header", "ipv6.nxt",
+ FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
+ { &hf_ipv6_hlim,
+ { "Hop limit", "ipv6.hlim",
+ FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
+ { &hf_ipv6_src,
+ { "Source", "ipv6.src",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "Source IPv6 Address" }},
+ { &hf_ipv6_dst,
+ { "Destination", "ipv6.dst",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "Destination IPv6 Address" }},
+ { &hf_ipv6_addr,
+ { "Address", "ipv6.addr",
+ FT_IPv6, BASE_NONE, NULL, 0x0,
+ "Source or Destination IPv6 Address" }},
+
+ /* BT INSERT BEGIN */
+ { &hf_ipv6_mipv6_type,
+ { "Option Type ", "ipv6.mipv6_type",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_length,
+ { "Option Length ", "ipv6.mipv6_length",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &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,
+ "" }},
+ { &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,
+ "" }},
+ { &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,
+ "" }},
+ { &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,
+ "" }},
+ { &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,
+ "" }},
+ { &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,
+ "" }},
+ { &hf_ipv6_mipv6_prefix_length,
+ { "Prefix Length ", "ipv6.mipv6_prefix_length",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_sequence_number,
+ { "Sequence Number ", "ipv6.mipv6_sequence_number",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_life_time,
+ { "Life Time ", "ipv6.mipv6_life_time",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_status,
+ { "Status ", "ipv6.mipv6_status",
+ FT_UINT8, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_refresh,
+ { "Refresh ", "ipv6.mipv6_refresh",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_home_address,
+ { "Home Address ", "ipv6.mipv6_home_address",
+ FT_IPv6, BASE_HEX, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_sub_type,
+ { "Sub-Option Type ", "ipv6.mipv6_sub_type",
+ FT_UINT8, BASE_NONE, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_sub_length,
+ { "Sub-Option Length ", "ipv6.mipv6_sub_length",
+ FT_UINT8, BASE_NONE, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_sub_unique_ID,
+ { "Unique Identifier ", "ipv6.mipv6_sub_unique_ID",
+ FT_UINT16, BASE_NONE, NULL, 0x0,
+ "" }},
+ { &hf_ipv6_mipv6_sub_alternative_COA,
+ { "Alternative Care of Address ", "ipv6.mipv6_sub_alternative_COA",
+ FT_IPv6, BASE_HEX, NULL, 0x0,
+ "" }},
+
+ /* BT INSERT END */
+#ifdef TEST_FINALHDR
+ { &hf_ipv6_final,
+ { "Final next header", "ipv6.final",
+ FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
+#endif
+ };
+ static gint *ett[] = {
+ &ett_ipv6,
+ };
+
+ 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));
+}
+
+void
+proto_reg_handoff_ipv6(void)
+{
+ old_dissector_add("ethertype", ETHERTYPE_IPv6, dissect_ipv6, proto_ipv6);
+ old_dissector_add("ppp.protocol", PPP_IPV6, dissect_ipv6, proto_ipv6);
+ old_dissector_add("ip.proto", IP_PROTO_IPV6, dissect_ipv6, proto_ipv6);
+ old_dissector_add("null.type", BSD_AF_INET6_BSD, dissect_ipv6, proto_ipv6);
+ old_dissector_add("null.type", BSD_AF_INET6_FREEBSD, dissect_ipv6, proto_ipv6);
+ old_dissector_add("ip.proto", IP_PROTO_NONE, dissect_ipv6_none, proto_ipv6);
+}
git.samba.org / obnox / wireshark / wip.git / blobdiff