2011-04-08 16:53:02 +00:00
|
|
|
/* packet-babel.c
|
|
|
|
* Routines for Babel dissection (RFC 6126)
|
|
|
|
* Copyright 2011 by Juliusz Chroboczek <jch@pps.jussieu.fr>
|
|
|
|
*
|
|
|
|
* $Id$
|
|
|
|
*
|
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
|
|
* Copyright 1998 Gerald Combs
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License along
|
|
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
# include "config.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#include <glib.h>
|
|
|
|
|
|
|
|
#include <epan/packet.h>
|
|
|
|
|
|
|
|
static int proto_babel = -1;
|
|
|
|
|
|
|
|
static gint ett_babel = -1;
|
|
|
|
static int hf_babel_magic = -1;
|
|
|
|
static int hf_babel_version = -1;
|
|
|
|
static int hf_babel_bodylen = -1;
|
|
|
|
|
|
|
|
static int hf_babel_message = -1;
|
|
|
|
static gint ett_message = -1;
|
|
|
|
static int hf_babel_message_type = -1;
|
|
|
|
static int hf_babel_message_length = -1;
|
|
|
|
static int hf_babel_message_nonce = -1;
|
|
|
|
static int hf_babel_message_interval = -1;
|
|
|
|
static int hf_babel_message_seqno = -1;
|
|
|
|
static int hf_babel_message_ae = -1;
|
|
|
|
static int hf_babel_message_prefix = -1;
|
|
|
|
static int hf_babel_message_rxcost = -1;
|
|
|
|
static int hf_babel_message_routerid = -1;
|
|
|
|
static int hf_babel_message_flags = -1;
|
|
|
|
static int hf_babel_message_plen = -1;
|
|
|
|
static int hf_babel_message_omitted = -1;
|
|
|
|
static int hf_babel_message_metric = -1;
|
|
|
|
static int hf_babel_message_hopcount = -1;
|
|
|
|
|
|
|
|
static gint ett_subtree = -1;
|
|
|
|
|
2011-08-29 19:56:11 +00:00
|
|
|
#define UDP_PORT_BABEL 6696
|
|
|
|
#define UDP_PORT_BABEL_OLD 6697
|
2011-04-08 16:53:02 +00:00
|
|
|
|
2012-08-10 22:55:02 +00:00
|
|
|
#define MESSAGE_PAD1 0
|
|
|
|
#define MESSAGE_PADN 1
|
|
|
|
#define MESSAGE_ACK_REQ 2
|
|
|
|
#define MESSAGE_ACK 3
|
|
|
|
#define MESSAGE_HELLO 4
|
|
|
|
#define MESSAGE_IHU 5
|
|
|
|
#define MESSAGE_ROUTER_ID 6
|
|
|
|
#define MESSAGE_NH 7
|
|
|
|
#define MESSAGE_UPDATE 8
|
|
|
|
#define MESSAGE_REQUEST 9
|
2011-04-08 16:53:02 +00:00
|
|
|
#define MESSAGE_MH_REQUEST 10
|
|
|
|
|
|
|
|
static const value_string messages[] = {
|
2012-08-10 22:55:02 +00:00
|
|
|
{ MESSAGE_PAD1, "pad1"},
|
|
|
|
{ MESSAGE_PADN, "padn"},
|
|
|
|
{ MESSAGE_ACK_REQ, "ack-req"},
|
|
|
|
{ MESSAGE_ACK, "ack"},
|
|
|
|
{ MESSAGE_HELLO, "hello"},
|
|
|
|
{ MESSAGE_IHU, "ihu"},
|
|
|
|
{ MESSAGE_ROUTER_ID, "router-id"},
|
|
|
|
{ MESSAGE_NH, "nh"},
|
|
|
|
{ MESSAGE_UPDATE, "update"},
|
|
|
|
{ MESSAGE_REQUEST, "request"},
|
2011-04-08 16:53:02 +00:00
|
|
|
{ MESSAGE_MH_REQUEST, "mh-request"},
|
|
|
|
{ 0, NULL}
|
|
|
|
};
|
|
|
|
|
|
|
|
static const value_string aes[] = {
|
|
|
|
{ 0, "Wildcard" },
|
|
|
|
{ 1, "IPv4" },
|
|
|
|
{ 2, "IPv6" },
|
|
|
|
{ 3, "Link-Local IPv6"},
|
|
|
|
{ 0, NULL }
|
|
|
|
};
|
|
|
|
|
2011-04-10 15:01:18 +00:00
|
|
|
/* The prefix for v6-mapped IPv4 addresses. Format_address below
|
2011-04-08 16:53:02 +00:00
|
|
|
returns IPv4 addresses in that format. */
|
|
|
|
|
|
|
|
static const unsigned char v4prefix[16] =
|
|
|
|
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
|
|
|
|
|
|
|
|
/* The following two functions return ephemeral or constant strings, no
|
|
|
|
need to call free. */
|
|
|
|
|
|
|
|
static const char *
|
|
|
|
format_address(const unsigned char *prefix)
|
|
|
|
{
|
|
|
|
if(prefix == NULL)
|
|
|
|
return "corrupt";
|
|
|
|
else if(memcmp(prefix, v4prefix, 12) == 0)
|
|
|
|
return ip_to_str(prefix + 12);
|
|
|
|
else
|
|
|
|
return ip6_to_str((const struct e_in6_addr*)prefix);
|
|
|
|
}
|
|
|
|
|
2012-04-09 19:43:19 +00:00
|
|
|
static const char *
|
2011-04-08 16:53:02 +00:00
|
|
|
format_prefix(const unsigned char *prefix, unsigned char plen)
|
|
|
|
{
|
|
|
|
return ep_strdup_printf("%s/%u", format_address(prefix), plen);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
network_prefix(int ae, int plen, unsigned int omitted,
|
|
|
|
const unsigned char *p, const unsigned char *dp,
|
|
|
|
unsigned int len, unsigned char *p_r)
|
|
|
|
{
|
2012-08-10 22:55:02 +00:00
|
|
|
unsigned pb;
|
2011-04-08 16:53:02 +00:00
|
|
|
unsigned char prefix[16];
|
|
|
|
|
|
|
|
if(plen >= 0)
|
|
|
|
pb = (plen + 7) / 8;
|
|
|
|
else if(ae == 1)
|
|
|
|
pb = 4;
|
|
|
|
else
|
|
|
|
pb = 16;
|
|
|
|
|
|
|
|
if(pb > 16)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
memset(prefix, 0, 16);
|
|
|
|
|
|
|
|
switch(ae) {
|
|
|
|
case 0: break;
|
|
|
|
case 1:
|
|
|
|
if(omitted > 4 || pb > 4 || (pb > omitted && len < pb - omitted))
|
|
|
|
return -1;
|
|
|
|
memcpy(prefix, v4prefix, 12);
|
|
|
|
if(omitted) {
|
|
|
|
if (dp == NULL) return -1;
|
|
|
|
memcpy(prefix, dp, 12 + omitted);
|
|
|
|
}
|
2011-04-27 23:20:15 +00:00
|
|
|
if(pb > omitted) memcpy(prefix + 12 + omitted, p, pb - omitted);
|
2011-04-08 16:53:02 +00:00
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
if(omitted > 16 || (pb > omitted && len < pb - omitted))
|
|
|
|
return -1;
|
|
|
|
if(omitted) {
|
|
|
|
if (dp == NULL) return -1;
|
|
|
|
memcpy(prefix, dp, omitted);
|
|
|
|
}
|
|
|
|
if(pb > omitted) memcpy(prefix + omitted, p, pb - omitted);
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
if(pb > 8 && len < pb - 8) return -1;
|
|
|
|
prefix[0] = 0xfe;
|
|
|
|
prefix[1] = 0x80;
|
|
|
|
if(pb > 8) memcpy(prefix + 8, p, pb - 8);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(p_r, prefix, 16);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
network_address(int ae, const unsigned char *a, unsigned int len,
|
|
|
|
unsigned char *a_r)
|
|
|
|
{
|
|
|
|
return network_prefix(ae, -1, 0, a, NULL, len, a_r);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_babel(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
unsigned char v4_prefix[16] = {0}, v6_prefix[16] = {0};
|
2012-08-10 22:55:02 +00:00
|
|
|
int i = 0;
|
2011-04-08 16:53:02 +00:00
|
|
|
proto_tree *babel_tree = NULL;
|
2012-08-10 22:55:02 +00:00
|
|
|
guint8 version;
|
|
|
|
guint16 bodylen;
|
2011-04-08 16:53:02 +00:00
|
|
|
|
|
|
|
if(tvb_length(tvb) < 4)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if(tvb_get_guint8(tvb, 0) != 42)
|
|
|
|
return 0;
|
|
|
|
version = tvb_get_guint8(tvb, 1);
|
|
|
|
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Babel");
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Babel");
|
|
|
|
|
|
|
|
if(version != 2) {
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Version %u", version);
|
|
|
|
return 2;
|
|
|
|
}
|
2011-04-10 15:01:18 +00:00
|
|
|
|
2011-04-08 16:53:02 +00:00
|
|
|
if(tree) {
|
|
|
|
ti = proto_tree_add_item(tree, proto_babel, tvb, 0, -1, ENC_NA);
|
|
|
|
babel_tree = proto_item_add_subtree(ti, ett_babel);
|
|
|
|
|
|
|
|
proto_tree_add_item(babel_tree, hf_babel_magic, tvb, 0, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(babel_tree, hf_babel_version, tvb, 1, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(babel_tree, hf_babel_bodylen,
|
|
|
|
tvb, 2, 2, ENC_BIG_ENDIAN);
|
|
|
|
}
|
|
|
|
|
|
|
|
bodylen = tvb_get_ntohs(tvb, 2);
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
while(i < bodylen) {
|
|
|
|
guint8 type, len = 0, total_length;
|
|
|
|
proto_tree *message_tree = NULL;
|
|
|
|
int message = 4 + i;
|
|
|
|
|
|
|
|
type = tvb_get_guint8(tvb, message);
|
|
|
|
if(type == MESSAGE_PAD1)
|
|
|
|
total_length = 1;
|
|
|
|
else {
|
|
|
|
len = tvb_get_guint8(tvb, message + 1);
|
|
|
|
total_length = len + 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s",
|
2012-08-10 22:55:02 +00:00
|
|
|
val_to_str_const(type, messages, "unknown"));
|
2011-04-08 16:53:02 +00:00
|
|
|
|
|
|
|
ti = proto_tree_add_uint_format(babel_tree, hf_babel_message,
|
|
|
|
tvb, message, total_length, type,
|
|
|
|
"Message %s (%u)",
|
2012-08-10 22:55:02 +00:00
|
|
|
val_to_str_const(type, messages, "unknown"),
|
2011-04-08 16:53:02 +00:00
|
|
|
type);
|
|
|
|
|
|
|
|
if(tree) {
|
|
|
|
message_tree = proto_item_add_subtree(ti, ett_message);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_type,
|
|
|
|
tvb, message, 1, ENC_NA);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(type == MESSAGE_PAD1) {
|
|
|
|
i++;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(tree) {
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_length,
|
|
|
|
tvb, message + 1, 1, ENC_BIG_ENDIAN);
|
|
|
|
|
|
|
|
if(type == MESSAGE_PADN) {
|
|
|
|
} else if(type == MESSAGE_ACK_REQ) {
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_nonce,
|
|
|
|
tvb, message + 4, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_interval,
|
|
|
|
tvb, message + 6, 2, ENC_BIG_ENDIAN);
|
|
|
|
} else if(type == MESSAGE_ACK) {
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_nonce,
|
|
|
|
tvb, message + 2, 2, ENC_BIG_ENDIAN);
|
|
|
|
} else if(type == MESSAGE_HELLO) {
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_seqno,
|
|
|
|
tvb, message + 4, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_interval,
|
|
|
|
tvb, message + 6, 2, ENC_BIG_ENDIAN);
|
|
|
|
} else if(type == MESSAGE_IHU) {
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_tree *subtree;
|
|
|
|
unsigned char address[16];
|
2011-04-08 16:53:02 +00:00
|
|
|
int rc =
|
|
|
|
network_address(tvb_get_guint8(tvb, message + 2),
|
|
|
|
tvb_get_ptr(tvb, message + 8, len - 6),
|
|
|
|
len - 6,
|
|
|
|
address);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_rxcost,
|
|
|
|
tvb, message + 4, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_interval,
|
|
|
|
tvb, message + 6, 2, ENC_BIG_ENDIAN);
|
|
|
|
ti = proto_tree_add_text(message_tree,
|
|
|
|
tvb, message + 4, len - 2,
|
|
|
|
"Address: %s",
|
|
|
|
format_address(rc < 0 ?
|
|
|
|
NULL : address));
|
|
|
|
subtree = proto_item_add_subtree(ti, ett_subtree);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_ae,
|
|
|
|
tvb, message + 2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_prefix,
|
|
|
|
tvb, message + 4, len - 2, ENC_NA);
|
|
|
|
} else if(type == MESSAGE_ROUTER_ID) {
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_routerid,
|
|
|
|
tvb, message + 4, 8, ENC_NA);
|
|
|
|
} else if(type == MESSAGE_NH) {
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_tree *subtree;
|
|
|
|
unsigned char nh[16];
|
2011-04-08 16:53:02 +00:00
|
|
|
int rc =
|
|
|
|
network_address(tvb_get_guint8(tvb, message + 2),
|
|
|
|
tvb_get_ptr(tvb, message + 4, len - 2),
|
|
|
|
len - 2,
|
|
|
|
nh);
|
|
|
|
ti = proto_tree_add_text(message_tree,
|
|
|
|
tvb, message + 4, len - 2,
|
|
|
|
"NH: %s",
|
|
|
|
format_address(rc < 0 ? NULL : nh));
|
|
|
|
subtree = proto_item_add_subtree(ti, ett_subtree);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_ae,
|
|
|
|
tvb, message + 2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_prefix,
|
|
|
|
tvb, message + 4, len - 2, ENC_NA);
|
|
|
|
} else if(type == MESSAGE_UPDATE) {
|
2012-08-10 22:55:02 +00:00
|
|
|
|
|
|
|
proto_tree *subtree;
|
|
|
|
unsigned char p[16];
|
|
|
|
guint8 ae = tvb_get_guint8(tvb, message + 2);
|
|
|
|
guint8 flags = tvb_get_guint8(tvb, message + 3);
|
|
|
|
guint8 plen = tvb_get_guint8(tvb, message + 4);
|
2011-04-08 16:53:02 +00:00
|
|
|
int rc =
|
|
|
|
network_prefix(ae, plen,
|
|
|
|
tvb_get_guint8(tvb, message + 5),
|
|
|
|
tvb_get_ptr(tvb, message + 12, len - 10),
|
|
|
|
ae == 1 ? v4_prefix : v6_prefix,
|
|
|
|
len - 10, p);
|
|
|
|
if(rc >= 0 && (flags & 0x80)) {
|
|
|
|
if(ae == 1)
|
|
|
|
memcpy(v4_prefix, p, 16);
|
|
|
|
else
|
|
|
|
memcpy(v6_prefix, p, 16);
|
|
|
|
}
|
|
|
|
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_flags,
|
|
|
|
tvb, message + 3, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_interval,
|
|
|
|
tvb, message + 6, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_seqno,
|
|
|
|
tvb, message + 8, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_metric,
|
|
|
|
tvb, message + 10, 2, ENC_BIG_ENDIAN);
|
|
|
|
ti = proto_tree_add_text(message_tree,
|
|
|
|
tvb, message + 12, len - 10,
|
|
|
|
"Prefix: %s",
|
|
|
|
format_prefix(rc < 0 ? NULL : p,
|
|
|
|
plen));
|
|
|
|
subtree = proto_item_add_subtree(ti, ett_subtree);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_ae,
|
|
|
|
tvb, message + 2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_plen,
|
|
|
|
tvb, message + 4, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_omitted,
|
|
|
|
tvb, message + 5, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_prefix,
|
|
|
|
tvb, message + 12, len - 10, ENC_NA);
|
|
|
|
} else if(type == MESSAGE_REQUEST) {
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_tree *subtree;
|
|
|
|
unsigned char p[16];
|
|
|
|
guint8 plen = tvb_get_guint8(tvb, message + 3);
|
2011-04-08 16:53:02 +00:00
|
|
|
int rc =
|
|
|
|
network_prefix(tvb_get_guint8(tvb, message + 2), plen,
|
|
|
|
0,
|
|
|
|
tvb_get_ptr(tvb, message + 4, len - 2),
|
|
|
|
NULL,
|
|
|
|
len - 2, p);
|
|
|
|
ti = proto_tree_add_text(message_tree,
|
|
|
|
tvb, message + 4, len - 2,
|
|
|
|
"Prefix: %s",
|
|
|
|
format_prefix(rc < 0 ? NULL : p,
|
|
|
|
plen));
|
|
|
|
subtree = proto_item_add_subtree(ti, ett_subtree);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_ae,
|
|
|
|
tvb, message + 2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_plen,
|
|
|
|
tvb, message + 3, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_prefix,
|
|
|
|
tvb, message + 4, len - 2, ENC_NA);
|
|
|
|
} else if(type == MESSAGE_MH_REQUEST) {
|
2012-08-10 22:55:02 +00:00
|
|
|
proto_tree *subtree;
|
|
|
|
unsigned char p[16];
|
|
|
|
guint8 plen = tvb_get_guint8(tvb, message + 3);
|
2011-04-08 16:53:02 +00:00
|
|
|
int rc =
|
|
|
|
network_prefix(tvb_get_guint8(tvb, message + 2), plen,
|
|
|
|
0,
|
|
|
|
tvb_get_ptr(tvb, message + 16, len - 14),
|
|
|
|
NULL,
|
|
|
|
len - 14, p);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_seqno,
|
|
|
|
tvb, message + 4, 2, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_hopcount,
|
|
|
|
tvb, message + 6, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(message_tree, hf_babel_message_routerid,
|
|
|
|
tvb, message + 8, 8, ENC_NA);
|
|
|
|
ti = proto_tree_add_text(message_tree,
|
|
|
|
tvb, message + 16, len - 14,
|
|
|
|
"Prefix: %s",
|
|
|
|
format_prefix(rc < 0 ? NULL : p,
|
|
|
|
plen));
|
|
|
|
subtree = proto_item_add_subtree(ti, ett_subtree);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_ae,
|
|
|
|
tvb, message + 2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_plen,
|
|
|
|
tvb, message + 3, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(subtree, hf_babel_message_prefix,
|
|
|
|
tvb, message + 16, len - 14, ENC_NA);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
i += len + 2;
|
|
|
|
}
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_babel(void)
|
|
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_babel_magic,
|
|
|
|
{ "Magic", "babel.magic", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, "Magic value 42", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_version,
|
|
|
|
{ "Version", "babel.version", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, "Version of the Babel protocol", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_bodylen,
|
|
|
|
{ "Body Length", "babel.bodylen", FT_UINT16, BASE_DEC,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message,
|
|
|
|
{ "Message", "babel.message", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, "Babel Message", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_type,
|
|
|
|
{ "Message Type", "babel.message.type", FT_UINT8, BASE_DEC,
|
|
|
|
VALS(messages), 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_length,
|
|
|
|
{ "Message Length", "babel.message.length", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_nonce,
|
|
|
|
{ "Nonce", "babel.message.nonce", FT_UINT16, BASE_HEX,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_interval,
|
|
|
|
{ "Interval", "babel.message.interval", FT_UINT16, BASE_DEC,
|
|
|
|
NULL, 0, "Interval (in centiseconds)", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_seqno,
|
|
|
|
{ "Seqno", "babel.message.seqno", FT_UINT16, BASE_HEX,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_ae,
|
|
|
|
{ "Address Encoding", "babel.message.ae", FT_UINT8, BASE_DEC,
|
|
|
|
VALS(aes), 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_prefix,
|
|
|
|
{ "Raw Prefix", "babel.message.prefix", FT_BYTES, BASE_NONE,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_rxcost,
|
|
|
|
{ "Rxcost", "babel.message.rxcost", FT_UINT16, BASE_HEX,
|
|
|
|
NULL, 0, "Rxcost (from the point of vue of the sender)", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_routerid,
|
|
|
|
{ "Router ID", "babel.message.routerid", FT_BYTES, BASE_NONE,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_flags,
|
|
|
|
{ "Flags", "babel.message.flags", FT_UINT8, BASE_HEX,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_plen,
|
|
|
|
{ "Prefix Length", "babel.message.plen", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_omitted,
|
|
|
|
{ "Omitted Bytes", "babel.message.omitted", FT_UINT8, BASE_DEC,
|
|
|
|
NULL, 0, "Number of bytes omitted from the prefix", HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_metric,
|
|
|
|
{ "Metric", "babel.message.metric", FT_UINT16, BASE_DEC,
|
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_babel_message_hopcount,
|
2012-01-18 21:07:53 +00:00
|
|
|
{ "Hop Count", "babel.message.hopcount", FT_UINT8, BASE_DEC,
|
2011-04-08 16:53:02 +00:00
|
|
|
NULL, 0, NULL, HFILL }
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static gint *ett[] = {
|
|
|
|
&ett_babel,
|
|
|
|
&ett_message,
|
|
|
|
&ett_subtree,
|
|
|
|
};
|
|
|
|
|
|
|
|
proto_babel =
|
|
|
|
proto_register_protocol("Babel Routing Protocol", "Babel", "babel");
|
|
|
|
|
|
|
|
proto_register_field_array(proto_babel, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_babel(void)
|
|
|
|
{
|
|
|
|
dissector_handle_t babel_handle;
|
|
|
|
|
|
|
|
babel_handle = new_create_dissector_handle(dissect_babel, proto_babel);
|
|
|
|
dissector_add_uint("udp.port", UDP_PORT_BABEL, babel_handle);
|
2011-08-29 19:56:11 +00:00
|
|
|
dissector_add_uint("udp.port", UDP_PORT_BABEL_OLD, babel_handle);
|
2011-04-08 16:53:02 +00:00
|
|
|
}
|