diff options
author | Alexis La Goutte <alexis.lagoutte@gmail.com> | 2011-04-19 15:23:51 +0000 |
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committer | Alexis La Goutte <alexis.lagoutte@gmail.com> | 2011-04-19 15:23:51 +0000 |
commit | 372639e7f852e0a97c94b1a71dd3d4fef3c8af95 (patch) | |
tree | 85389f83d69da44643d2edee70385487d4e4eb9c /epan/dissectors/packet-bt-utp.c | |
parent | d059b4322625022bd814486cf9a19c53660d11b5 (diff) |
From Xiao Xiangquan via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5846
A new dissector for uTorrent Transport Protocol
From me :
* Add link to spec BEP-0029
* Add note about type/version
* Rework extensions loop
* Use 2-space indenting
svn path=/trunk/; revision=36716
Diffstat (limited to 'epan/dissectors/packet-bt-utp.c')
-rw-r--r-- | epan/dissectors/packet-bt-utp.c | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/epan/dissectors/packet-bt-utp.c b/epan/dissectors/packet-bt-utp.c new file mode 100644 index 0000000000..4b6d839d9a --- /dev/null +++ b/epan/dissectors/packet-bt-utp.c @@ -0,0 +1,710 @@ +/* packet-bt-utp.c + * Routines for BT-UTP dissection + * Copyright 2011, Xiao Xiangquan <xiaoxiangquan@gmail.com> + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1999 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <epan/packet.h> +#include <epan/prefs.h> + +#define DEFAULT_UDP_PORT 55627 + +static const value_string bt_utp_type_vals[] = { + { 0, "Data" }, + { 1, "Fin" }, + { 2, "State" }, + { 3, "Reset" }, + { 4, "Syn" }, + { 0, NULL } +}; + +#define EXT_NO_EXTENSION 0 +#define EXT_SELECTION_ACKS 1 +#define EXT_EXTENSION_BITS 2 + +static const value_string bt_utp_extension_type_vals[] = { + { EXT_NO_EXTENSION, "No Extension" }, + { EXT_SELECTION_ACKS, "Selective acks" }, + { EXT_EXTENSION_BITS, "Extension bits" }, + { 0, NULL } +}; + +static int proto_bt_utp = -1; + +/* Specifications: BEP-0029 +http://www.bittorrent.org/beps/bep_0029.html + +Fields Types +0 4 8 16 24 32 ++-------+-------+---------------+---------------+---------------+ +| ver | type | extension | connection_id | ++-------+-------+---------------+---------------+---------------+ +| timestamp_microseconds | ++---------------+---------------+---------------+---------------+ +| timestamp_difference_microseconds | ++---------------+---------------+---------------+---------------+ +| wnd_size | ++---------------+---------------+---------------+---------------+ +| seq_nr | ack_nr | ++---------------+---------------+---------------+---------------+ + +0 8 16 ++---------------+---------------+---------------+---------------+ +| extension | len | bitmask ++---------------+---------------+---------------+---------------+ + | ++---------------+---------------+.... +*/ +static int hf_bt_utp_ver = -1; +static int hf_bt_utp_type = -1; +static int hf_bt_utp_extension = -1; +static int hf_bt_utp_next_extension_type = -1; +static int hf_bt_utp_extension_len = -1; +static int hf_bt_utp_extension_bitmask = -1; +static int hf_bt_utp_extension_unknown = -1; +static int hf_bt_utp_connection_id = -1; +static int hf_bt_utp_timestamp_ms = -1; +static int hf_bt_utp_timestamp_diff_ms = -1; +static int hf_bt_utp_wnd_size = -1; +static int hf_bt_utp_seq_nr = -1; +static int hf_bt_utp_ack_nr = -1; + +static gint ett_bt_utp = -1; +static gint ett_bt_utp_extension = -1; + +static guint global_bt_utp_udp_port = DEFAULT_UDP_PORT; + +void proto_reg_handoff_bt_utp(void); + +static int +dissect_utp_header(tvbuff_t *tvb, proto_tree *tree) +{ + proto_item *ti; + proto_tree *ext_tree; + guint8 extension_type; + guint8 extension_length; + int offset = 0; + + /* Strange in LibuTP the first bytes as the following definition + packet_type (4 high bits) + protocol version (4 low bits) + */ + proto_tree_add_item(tree, hf_bt_utp_ver, tvb, offset, 1, FALSE); + proto_tree_add_item(tree, hf_bt_utp_type, tvb, offset, 1, FALSE); + offset += 1; + proto_tree_add_item(tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + proto_tree_add_item(tree, hf_bt_utp_connection_id, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_bt_utp_timestamp_ms, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_timestamp_diff_ms, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_wnd_size, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_seq_nr, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_bt_utp_ack_nr, tvb, offset, 2, FALSE); + offset += 2; + + /* display the extension tree */ + while(offset <= (int)tvb_length(tvb)) + { + switch(extension_type){ + case EXT_NO_EXTENSION: /* 0 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, 1, FALSE); + proto_item_append_text(ti, " No Extension (End)"); + offset += 1; + break; + } + case EXT_SELECTION_ACKS: /* 1 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Selection Acks, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, FALSE); + offset += extension_length; + proto_item_set_len(ti, 1 + 1 + extension_length); + break; + } + case EXT_EXTENSION_BITS: /* 1 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Extension Bits, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, FALSE); + offset += extension_length; + proto_item_set_len(ti, 1 + 1 + extension_length); + break; + } + default: + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Unknown, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_unknown, tvb, offset, extension_length, FALSE); + 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) +{ + proto_item *ti; + proto_tree *sub_tree; + int decoded_length = 0; + /* set the protocol column */ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BT-uTP"); + /* set the info column */ + col_clear(pinfo->cinfo,COL_INFO); + + col_set_str( pinfo->cinfo, COL_INFO, "uTorrent Transport Protocol" ); + + if(tree) + { + ti = proto_tree_add_item(tree, proto_bt_utp, tvb, 0, -1, FALSE); + sub_tree = proto_item_add_subtree(ti, ett_bt_utp); + decoded_length = dissect_utp_header(tvb, sub_tree); + } + 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 } + }, + { &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 } + }, + { &hf_bt_utp_connection_id, + { "Connection ID", "bt-utp.connection_id", + FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_timestamp_ms, + { "Timestamp Microseconds", "bt-utp.timestamp_ms", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_timestamp_diff_ms, + { "Timestamp Difference Microseconds", "bt-utp.timestamp_diff_ms", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_wnd_size, + { "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 ( + "uTorrent Transport Protocol", /* name */ + "BT-uTP", /* short name */ + "bt-utp" /* abbrev */ + ); + + 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", + "uTorrent Transport Protocol UDP port", + "Set the UDP port for uTorrent Transport Protocol.", + 10, &global_bt_utp_udp_port); +} + +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: + * + * ex: set shiftwidth=2 tabstop=8 expandtab + * :indentSize=2:tabSize=8:noTabs=true: + */ +/* packet-bt-utp.c + * Routines for BT-UTP dissection + * Copyright 2011, Xiao Xiangquan <xiaoxiangquan@gmail.com> + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1999 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include <epan/packet.h> +#include <epan/prefs.h> + +#define DEFAULT_UDP_PORT 55627 + +static const value_string bt_utp_type_vals[] = { + { 0, "Data" }, + { 1, "Fin" }, + { 2, "State" }, + { 3, "Reset" }, + { 4, "Syn" }, + { 0, NULL } +}; + +#define EXT_NO_EXTENSION 0 +#define EXT_SELECTION_ACKS 1 +#define EXT_EXTENSION_BITS 2 + +static const value_string bt_utp_extension_type_vals[] = { + { EXT_NO_EXTENSION, "No Extension" }, + { EXT_SELECTION_ACKS, "Selective acks" }, + { EXT_EXTENSION_BITS, "Extension bits" }, + { 0, NULL } +}; + +static int proto_bt_utp = -1; + +/* Specifications: BEP-0029 +http://www.bittorrent.org/beps/bep_0029.html + +Fields Types +0 4 8 16 24 32 ++-------+-------+---------------+---------------+---------------+ +| ver | type | extension | connection_id | ++-------+-------+---------------+---------------+---------------+ +| timestamp_microseconds | ++---------------+---------------+---------------+---------------+ +| timestamp_difference_microseconds | ++---------------+---------------+---------------+---------------+ +| wnd_size | ++---------------+---------------+---------------+---------------+ +| seq_nr | ack_nr | ++---------------+---------------+---------------+---------------+ + +0 8 16 ++---------------+---------------+---------------+---------------+ +| extension | len | bitmask ++---------------+---------------+---------------+---------------+ + | ++---------------+---------------+.... +*/ +static int hf_bt_utp_ver = -1; +static int hf_bt_utp_type = -1; +static int hf_bt_utp_extension = -1; +static int hf_bt_utp_next_extension_type = -1; +static int hf_bt_utp_extension_len = -1; +static int hf_bt_utp_extension_bitmask = -1; +static int hf_bt_utp_extension_unknown = -1; +static int hf_bt_utp_connection_id = -1; +static int hf_bt_utp_timestamp_ms = -1; +static int hf_bt_utp_timestamp_diff_ms = -1; +static int hf_bt_utp_wnd_size = -1; +static int hf_bt_utp_seq_nr = -1; +static int hf_bt_utp_ack_nr = -1; + +static gint ett_bt_utp = -1; +static gint ett_bt_utp_extension = -1; + +static guint global_bt_utp_udp_port = DEFAULT_UDP_PORT; + +void proto_reg_handoff_bt_utp(void); + +static int +dissect_utp_header(tvbuff_t *tvb, proto_tree *tree) +{ + proto_item *ti; + proto_tree *ext_tree; + guint8 extension_type; + guint8 extension_length; + int offset = 0; + + /* Strange in LibuTP the first bytes as the following definition + packet_type (4 high bits) + protocol version (4 low bits) + */ + proto_tree_add_item(tree, hf_bt_utp_ver, tvb, offset, 1, FALSE); + proto_tree_add_item(tree, hf_bt_utp_type, tvb, offset, 1, FALSE); + offset += 1; + proto_tree_add_item(tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + proto_tree_add_item(tree, hf_bt_utp_connection_id, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_bt_utp_timestamp_ms, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_timestamp_diff_ms, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_wnd_size, tvb, offset, 4, FALSE); + offset += 4; + proto_tree_add_item(tree, hf_bt_utp_seq_nr, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item(tree, hf_bt_utp_ack_nr, tvb, offset, 2, FALSE); + offset += 2; + + /* display the extension tree */ + while(offset <= (int)tvb_length(tvb)) + { + switch(extension_type){ + case EXT_NO_EXTENSION: /* 0 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, 1, FALSE); + proto_item_append_text(ti, " No Extension (End)"); + offset += 1; + break; + } + case EXT_SELECTION_ACKS: /* 1 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Selection Acks, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, FALSE); + offset += extension_length; + proto_item_set_len(ti, 1 + 1 + extension_length); + break; + } + case EXT_EXTENSION_BITS: /* 1 */ + { + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Extension Bits, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_bitmask, tvb, offset, extension_length, FALSE); + offset += extension_length; + proto_item_set_len(ti, 1 + 1 + extension_length); + break; + } + default: + ti = proto_tree_add_item(tree, hf_bt_utp_extension, tvb, offset, -1, FALSE); + ext_tree = proto_item_add_subtree(ti, ett_bt_utp_extension); + + proto_tree_add_item(ext_tree, hf_bt_utp_next_extension_type, tvb, offset, 1, FALSE); + extension_type = tvb_get_guint8(tvb, offset); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_len, tvb, offset, 1, FALSE); + extension_length = tvb_get_guint8(tvb, offset); + proto_item_append_text(ti, " Unknown, Len=%d", extension_length); + offset += 1; + + proto_tree_add_item(ext_tree, hf_bt_utp_extension_unknown, tvb, offset, extension_length, FALSE); + 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) +{ + proto_item *ti; + proto_tree *sub_tree; + int decoded_length = 0; + /* set the protocol column */ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BT-uTP"); + /* set the info column */ + col_clear(pinfo->cinfo,COL_INFO); + + col_set_str( pinfo->cinfo, COL_INFO, "uTorrent Transport Protocol" ); + + if(tree) + { + ti = proto_tree_add_item(tree, proto_bt_utp, tvb, 0, -1, FALSE); + sub_tree = proto_item_add_subtree(ti, ett_bt_utp); + decoded_length = dissect_utp_header(tvb, sub_tree); + } + 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 } + }, + { &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 } + }, + { &hf_bt_utp_connection_id, + { "Connection ID", "bt-utp.connection_id", + FT_UINT16, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_timestamp_ms, + { "Timestamp Microseconds", "bt-utp.timestamp_ms", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_timestamp_diff_ms, + { "Timestamp Difference Microseconds", "bt-utp.timestamp_diff_ms", + FT_UINT32, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_bt_utp_wnd_size, + { "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 ( + "uTorrent Transport Protocol", /* name */ + "BT-uTP", /* short name */ + "bt-utp" /* abbrev */ + ); + + 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", + "uTorrent Transport Protocol UDP port", + "Set the UDP port for uTorrent Transport Protocol.", + 10, &global_bt_utp_udp_port); +} + +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: + * + * ex: set shiftwidth=2 tabstop=8 expandtab + * :indentSize=2:tabSize=8:noTabs=true: + */ |