2011-04-19 15:23:51 +00:00
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/* packet-bt-utp.c
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* Routines for BT-UTP dissection
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* Copyright 2011, Xiao Xiangquan <xiaoxiangquan@gmail.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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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 <epan/packet.h>
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#include <epan/prefs.h>
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#define DEFAULT_UDP_PORT 55627
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2011-04-20 20:32:26 +00:00
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enum {
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ST_DATA = 0,
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ST_FIN = 1,
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ST_STATE = 2,
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ST_RESET = 3,
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ST_SYN = 4,
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ST_NUM_STATES,
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};
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/* V0 hdr: "flags"; V1 hdr: "type" */
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2011-04-19 15:23:51 +00:00
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static const value_string bt_utp_type_vals[] = {
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2011-04-20 20:32:26 +00:00
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{ ST_DATA, "Data" },
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{ ST_FIN, "Fin" },
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{ ST_STATE, "State" },
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{ ST_RESET, "Reset" },
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{ ST_SYN, "Syn" },
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2011-04-19 15:23:51 +00:00
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{ 0, NULL }
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};
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2011-04-20 20:32:26 +00:00
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enum {
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EXT_NO_EXTENSION = 0,
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EXT_SELECTION_ACKS = 1,
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EXT_EXTENSION_BITS = 2,
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EXT_NUM_EXT,
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};
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2011-04-19 15:23:51 +00:00
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static const value_string bt_utp_extension_type_vals[] = {
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2011-04-20 20:32:26 +00:00
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{ EXT_NO_EXTENSION, "No Extension" },
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2011-04-19 15:23:51 +00:00
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{ EXT_SELECTION_ACKS, "Selective acks" },
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{ EXT_EXTENSION_BITS, "Extension bits" },
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{ 0, NULL }
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};
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static int proto_bt_utp = -1;
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2011-04-20 20:32:26 +00:00
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/* --- "Original" utp Header ("version 0" ?) --------------
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See utp.cpp source code @ https://github.com/bittorrent/libutp
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-- Fixed Header --
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+-------+-------+---------------+---------------+---------------+
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| connection_id |
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+-------+-------+---------------+---------------+---------------+
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| timestamp_seconds |
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+---------------+---------------+---------------+---------------+
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| timestamp_microseconds |
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+---------------+---------------+---------------+---------------+
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| timestamp_difference_microseconds |
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+---------------+---------------+---------------+---------------+
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| wnd_size | ext | flags | seq_nr [ho] |
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+---------------+---------------+---------------+---------------+
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| seq_nr [lo] | ack_nr |
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+---------------+---------------+---------------+
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-- Extension Field(s) --
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0 8 16
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+---------------+---------------+---------------+---------------+
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| extension | len | bitmask
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+---------------+---------------+---------------+---------------+
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+---------------+---------------+....
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*/
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/* --- Version 1 Header ----------------
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Specifications: BEP-0029
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2011-04-19 15:23:51 +00:00
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http://www.bittorrent.org/beps/bep_0029.html
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2011-04-20 20:32:26 +00:00
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-- Fixed Header --
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2011-04-19 15:23:51 +00:00
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Fields Types
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0 4 8 16 24 32
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+-------+-------+---------------+---------------+---------------+
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| ver | type | extension | connection_id |
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+-------+-------+---------------+---------------+---------------+
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| timestamp_microseconds |
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+---------------+---------------+---------------+---------------+
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| timestamp_difference_microseconds |
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+---------------+---------------+---------------+---------------+
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| wnd_size |
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+---------------+---------------+---------------+---------------+
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| seq_nr | ack_nr |
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+---------------+---------------+---------------+---------------+
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2011-04-20 20:32:26 +00:00
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XXX: It appears that the above is to be interpreted as indicating
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that 'ver' is in the low-order 4 bits of byte 0 (mask: 0x0f).
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(See utp.cpp @ https://github.com/bittorrent/libutp)
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-- Extension Field(s) --
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2011-04-19 15:23:51 +00:00
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0 8 16
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+---------------+---------------+---------------+---------------+
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| extension | len | bitmask
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+---------------+---------------+---------------+---------------+
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+---------------+---------------+....
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*/
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2011-04-20 20:32:26 +00:00
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#define V1_FIXED_HDR_SIZE 20
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2011-04-19 15:23:51 +00:00
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static int hf_bt_utp_ver = -1;
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static int hf_bt_utp_type = -1;
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2011-04-20 20:32:26 +00:00
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static int hf_bt_utp_flags = -1;
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2011-04-19 15:23:51 +00:00
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static int hf_bt_utp_extension = -1;
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static int hf_bt_utp_next_extension_type = -1;
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static int hf_bt_utp_extension_len = -1;
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static int hf_bt_utp_extension_bitmask = -1;
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static int hf_bt_utp_extension_unknown = -1;
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2011-04-20 20:32:26 +00:00
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static int hf_bt_utp_connection_id_v0 = -1;
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static int hf_bt_utp_connection_id_v1 = -1;
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static int hf_bt_utp_timestamp_sec = -1;
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static int hf_bt_utp_timestamp_us = -1;
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static int hf_bt_utp_timestamp_diff_us = -1;
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static int hf_bt_utp_wnd_size_v0 = -1;
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static int hf_bt_utp_wnd_size_v1 = -1;
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2011-04-19 15:23:51 +00:00
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static int hf_bt_utp_seq_nr = -1;
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static int hf_bt_utp_ack_nr = -1;
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static gint ett_bt_utp = -1;
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static gint ett_bt_utp_extension = -1;
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static guint global_bt_utp_udp_port = DEFAULT_UDP_PORT;
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void proto_reg_handoff_bt_utp(void);
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2011-04-20 20:32:26 +00:00
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static gboolean
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utp_is_v1(tvbuff_t *tvb) {
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guint8 v1_ver_type;
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guint8 v1_ext;
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guint len;
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v1_ver_type = tvb_get_guint8(tvb, 0);
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v1_ext = tvb_get_guint8(tvb, 1);
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if (((v1_ver_type & 0x0f) != 1) ||
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((v1_ver_type>>4) >= ST_NUM_STATES) ||
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(v1_ext >= EXT_NUM_EXT)) {
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return FALSE; /* Not V1 (or corrupt) */
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}
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/* The simple heuristic above (based upon code from utp.cpp) suggests the header is "V1";
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* However, based upon a capture seen, the simple heuristic does not appear to be sufficient.
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* So: Also do some length checking:
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* The length of "V1" frames should be 20, 26, 30, 34, 36, 38, ...
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* fixed hdr len: 20
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2011-05-20 15:34:29 +00:00
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* extension(s) len: 6, 10, 14, 16, 18, 20, ...
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2011-04-20 20:32:26 +00:00
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* XXX: this is a hack and should be replaced !!
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2011-05-20 15:34:29 +00:00
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* In fact this heuristic probably fails for some SF_DATA packets since they
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* presumably can contain a variable number of data bytes after the header.
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2011-04-20 20:32:26 +00:00
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*/
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len = tvb_reported_length(tvb);
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if (len < V1_FIXED_HDR_SIZE) {
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return TRUE; /* Invalid ?: pretend V1 anyways */
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}
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len -= V1_FIXED_HDR_SIZE;
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if ((len == 0) ||
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(len == 6) ||
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(len == 10) ||
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(len == 14) ||
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((len > 14) && (len%2 == 0))) {
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return TRUE; /* looks like V1 */
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}
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return FALSE; /* Not V1 (or corrupt) */
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}
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2011-04-19 15:23:51 +00:00
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static int
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2011-04-22 13:16:45 +00:00
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dissect_utp_header_v0(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, guint8 *extension_type)
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2011-04-19 15:23:51 +00:00
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{
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2011-04-22 13:16:45 +00:00
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/* "Original" (V0) */
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_connection_id_v0, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_timestamp_sec, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_timestamp_us, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_timestamp_diff_us, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_wnd_size_v0, tvb, offset, 1, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 1;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_next_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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*extension_type = tvb_get_guint8(tvb, offset);
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offset += 1;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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col_append_fstr(pinfo->cinfo, COL_INFO, " Type: %s", val_to_str(tvb_get_guint8(tvb, offset), bt_utp_type_vals, "Unknown %d"));
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offset += 1;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_seq_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 2;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_ack_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 2;
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2011-04-20 20:32:26 +00:00
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2011-04-22 13:16:45 +00:00
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return offset;
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}
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2011-04-20 20:32:26 +00:00
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2011-04-22 13:16:45 +00:00
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static int
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dissect_utp_header_v1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, guint8 *extension_type)
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{
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/* V1 */
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/* Strange: Contrary to BEP-29, in LibuTP (utp.cpp) the first byte has the following definition:
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packet_type (4 high bits)
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protocol version (4 low bits)
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*/
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_ver, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_bt_utp_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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col_append_fstr(pinfo->cinfo, COL_INFO, " Type: %s", val_to_str((tvb_get_guint8(tvb, offset) >> 4), bt_utp_type_vals, "Unknown %d"));
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offset += 1;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_next_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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*extension_type = tvb_get_guint8(tvb, offset);
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offset += 1;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_connection_id_v1, tvb, offset, 2, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 2;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_timestamp_us, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_timestamp_diff_us, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_wnd_size_v1, tvb, offset, 4, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 4;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_seq_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 2;
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2011-10-06 03:35:44 +00:00
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proto_tree_add_item(tree, hf_bt_utp_ack_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
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2011-04-22 13:16:45 +00:00
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offset += 2;
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2011-04-19 15:23:51 +00:00
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2011-04-22 13:16:45 +00:00
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return offset;
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}
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static int
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dissect_utp_extension(tvbuff_t *tvb, packet_info _U_*pinfo, proto_tree *tree, int offset, guint8 *extension_type)
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{
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proto_item *ti;
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proto_tree *ext_tree;
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guint8 extension_length;
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2011-04-19 15:23:51 +00:00
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/* display the extension tree */
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2011-04-20 17:25:07 +00:00
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/* XXX: This code loops thru the packet bytes until reaching the end of the PDU
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* ignoring the "end-of-list" [EXT_NO_EXTENSION] extension type.
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* Should we just quit when EXT_NO_EXTENSION is encountered ?
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*/
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2011-04-20 20:32:26 +00:00
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while(offset < (int)tvb_reported_length(tvb))
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2011-04-19 15:23:51 +00:00
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{
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2011-04-22 13:16:45 +00:00
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switch(*extension_type){
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2011-04-19 15:23:51 +00:00
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case EXT_SELECTION_ACKS: /* 1 */
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{
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2011-10-04 22:44:31 +00:00
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ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, ENC_NA);
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2011-04-19 15:23:51 +00:00
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ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension);
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2011-10-06 03:35:44 +00:00
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|
|
proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-22 13:16:45 +00:00
|
|
|
*extension_type = tvb_get_guint8(tvb, offset);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += 1;
|
2011-04-19 16:37:39 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-19 15:23:51 +00:00
|
|
|
extension_length = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_item_append_text(ti, " Selection Acks, Len=%d", extension_length);
|
|
|
|
offset += 1;
|
2011-04-19 16:37:39 +00:00
|
|
|
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += extension_length;
|
|
|
|
proto_item_set_len(ti, 1 + 1 + extension_length);
|
|
|
|
break;
|
|
|
|
}
|
2011-04-20 17:25:07 +00:00
|
|
|
case EXT_EXTENSION_BITS: /* 2 */
|
2011-04-19 15:23:51 +00:00
|
|
|
{
|
2011-10-04 22:44:31 +00:00
|
|
|
ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension);
|
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-22 13:16:45 +00:00
|
|
|
*extension_type = tvb_get_guint8(tvb, offset);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += 1;
|
2011-04-19 16:37:39 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-19 16:37:39 +00:00
|
|
|
extension_length = tvb_get_guint8(tvb, offset);
|
2011-04-19 15:23:51 +00:00
|
|
|
proto_item_append_text(ti, " Extension Bits, Len=%d", extension_length);
|
|
|
|
offset += 1;
|
2011-04-19 16:37:39 +00:00
|
|
|
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += extension_length;
|
|
|
|
proto_item_set_len(ti, 1 + 1 + extension_length);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
2011-10-04 22:44:31 +00:00
|
|
|
ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension);
|
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-22 13:16:45 +00:00
|
|
|
*extension_type = tvb_get_guint8(tvb, offset);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += 1;
|
2011-04-19 16:37:39 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, ENC_BIG_ENDIAN);
|
2011-04-19 15:23:51 +00:00
|
|
|
extension_length = tvb_get_guint8(tvb, offset);
|
2011-04-19 16:37:39 +00:00
|
|
|
proto_item_append_text(ti, " Unknown, Len=%d", extension_length);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += 1;
|
|
|
|
|
2011-10-04 22:44:31 +00:00
|
|
|
proto_tree_add_item(ext_tree, hf_bt_utp_extension_unknown, tvb, offset, extension_length, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
offset += extension_length;
|
|
|
|
proto_item_set_len(ti, 1 + 1 + extension_length);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
dissect_bt_utp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
|
|
{
|
2011-04-20 17:25:07 +00:00
|
|
|
proto_tree *sub_tree = NULL;
|
2011-04-22 13:16:45 +00:00
|
|
|
int decoded_length = 0;
|
|
|
|
guint8 extension_type;
|
2011-04-20 17:25:07 +00:00
|
|
|
|
2011-04-19 15:23:51 +00:00
|
|
|
/* set the protocol column */
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BT-uTP");
|
|
|
|
/* set the info column */
|
2011-04-19 16:37:39 +00:00
|
|
|
col_set_str( pinfo->cinfo, COL_INFO, "uTorrent Transport Protocol" );
|
2011-04-19 15:23:51 +00:00
|
|
|
|
|
|
|
if(tree)
|
|
|
|
{
|
2011-04-20 17:25:07 +00:00
|
|
|
proto_item *ti;
|
2011-10-21 02:10:19 +00:00
|
|
|
ti = proto_tree_add_item(tree, proto_bt_utp, tvb, 0, -1, ENC_NA);
|
2011-04-19 15:23:51 +00:00
|
|
|
sub_tree = proto_item_add_subtree(ti, ett_bt_utp);
|
|
|
|
}
|
2011-04-20 17:25:07 +00:00
|
|
|
|
2011-04-22 13:16:45 +00:00
|
|
|
/* Determine header version */
|
|
|
|
|
|
|
|
if (!utp_is_v1(tvb)) {
|
|
|
|
decoded_length = dissect_utp_header_v0(tvb, pinfo, sub_tree, decoded_length, &extension_type);
|
|
|
|
} else {
|
|
|
|
decoded_length = dissect_utp_header_v1(tvb, pinfo, sub_tree, decoded_length, &extension_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
decoded_length = dissect_utp_extension(tvb, pinfo, sub_tree, decoded_length, &extension_type);
|
2011-04-20 17:25:07 +00:00
|
|
|
|
2011-04-19 15:23:51 +00:00
|
|
|
return decoded_length;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_bt_utp(void)
|
|
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_bt_utp_ver,
|
|
|
|
{ "Version", "bt-utp.ver",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x0F,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-20 20:32:26 +00:00
|
|
|
{ &hf_bt_utp_flags,
|
|
|
|
{ "Flags", "bt-utp.flags",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(bt_utp_type_vals), 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-19 15:23:51 +00:00
|
|
|
{ &hf_bt_utp_type,
|
|
|
|
{ "Type", "bt-utp.type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(bt_utp_type_vals), 0xF0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_extension,
|
|
|
|
{ "Extension", "bt-utp.extension",
|
|
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_next_extension_type,
|
|
|
|
{ "Next Extension Type", "bt-utp.next_extension_type",
|
|
|
|
FT_UINT8, BASE_DEC, VALS(bt_utp_extension_type_vals), 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_extension_len,
|
|
|
|
{ "Extension Length", "bt-utp.extension_len",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_extension_bitmask,
|
|
|
|
{ "Extension Bitmask", "bt-utp.extension_bitmask",
|
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_extension_unknown,
|
|
|
|
{ "Extension Unknown", "bt-utp.extension_unknown",
|
|
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-20 20:32:26 +00:00
|
|
|
{ &hf_bt_utp_connection_id_v0,
|
|
|
|
{ "Connection ID", "bt-utp.connection_id",
|
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_connection_id_v1,
|
2011-04-19 15:23:51 +00:00
|
|
|
{ "Connection ID", "bt-utp.connection_id",
|
|
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-20 20:32:26 +00:00
|
|
|
{ &hf_bt_utp_timestamp_sec,
|
|
|
|
{ "Timestamp seconds", "bt-utp.timestamp_sec",
|
2011-04-19 15:23:51 +00:00
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-20 20:32:26 +00:00
|
|
|
{ &hf_bt_utp_timestamp_us,
|
|
|
|
{ "Timestamp Microseconds", "bt-utp.timestamp_us",
|
2011-04-19 15:23:51 +00:00
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
2011-04-20 20:32:26 +00:00
|
|
|
{ &hf_bt_utp_timestamp_diff_us,
|
|
|
|
{ "Timestamp Difference Microseconds", "bt-utp.timestamp_diff_us",
|
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_wnd_size_v0,
|
|
|
|
{ "Windows Size", "bt-utp.wnd_size",
|
|
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_wnd_size_v1,
|
2011-04-19 15:23:51 +00:00
|
|
|
{ "Windows Size", "bt-utp.wnd_size",
|
|
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_seq_nr,
|
|
|
|
{ "Sequence NR", "bt-utp.seq_nr",
|
|
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
{ &hf_bt_utp_ack_nr,
|
|
|
|
{ "ACK NR", "bt-utp.ack_nr",
|
|
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
|
|
NULL, HFILL }
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
|
|
static gint *ett[] = { &ett_bt_utp, &ett_bt_utp_extension };
|
|
|
|
|
|
|
|
module_t *bt_utp_module;
|
|
|
|
|
|
|
|
/* Register protocol */
|
|
|
|
proto_bt_utp = proto_register_protocol (
|
2011-04-19 16:37:39 +00:00
|
|
|
"uTorrent Transport Protocol", /* name */
|
|
|
|
"BT-uTP", /* short name */
|
|
|
|
"bt-utp" /* abbrev */
|
|
|
|
);
|
2011-04-19 15:23:51 +00:00
|
|
|
|
|
|
|
proto_register_field_array(proto_bt_utp, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
new_register_dissector("bt-utp", dissect_bt_utp, proto_bt_utp);
|
|
|
|
|
|
|
|
/* Register our configuration options */
|
|
|
|
bt_utp_module = prefs_register_protocol(proto_bt_utp, proto_reg_handoff_bt_utp);
|
|
|
|
|
|
|
|
prefs_register_uint_preference(bt_utp_module, "udp_port",
|
2011-04-19 16:37:39 +00:00
|
|
|
"uTorrent Transport Protocol UDP port",
|
|
|
|
"Set the UDP port for uTorrent Transport Protocol.",
|
|
|
|
10, &global_bt_utp_udp_port);
|
2011-04-19 15:23:51 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
proto_reg_handoff_bt_utp(void)
|
|
|
|
{
|
|
|
|
static gboolean bt_utp_prefs_initialized = FALSE;
|
|
|
|
static dissector_handle_t bt_utp_handle;
|
|
|
|
static guint bt_utp_udp_port;
|
|
|
|
|
|
|
|
if (!bt_utp_prefs_initialized)
|
|
|
|
{
|
|
|
|
bt_utp_handle = new_create_dissector_handle(dissect_bt_utp, proto_bt_utp);
|
|
|
|
bt_utp_prefs_initialized = TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
dissector_delete_uint("udp.port", bt_utp_udp_port, bt_utp_handle);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set our port number for future use */
|
|
|
|
bt_utp_udp_port = global_bt_utp_udp_port;
|
|
|
|
dissector_add_uint("udp.port", global_bt_utp_udp_port, bt_utp_handle);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Editor modelines
|
|
|
|
*
|
|
|
|
* Local Variables:
|
|
|
|
* c-basic-offset: 2
|
|
|
|
* tab-width: 8
|
|
|
|
* indent-tabs-mode: nil
|
|
|
|
* End:
|
|
|
|
*
|
2011-09-21 17:49:11 +00:00
|
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
2011-04-19 15:23:51 +00:00
|
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
|
|
*/
|
2011-04-19 16:37:39 +00:00
|
|
|
|