forked from osmocom/wireshark
f331077a60
while this should improve performance by unmeasurably little it does have the sideeffect that once we finish the rewrite tcp analysis might actually work and work well even for tcp over tcp tunnelling. this also means that if you include packet-tcp.h you also need to include emem.h . svn path=/trunk/; revision=17681
1976 lines
88 KiB
C
1976 lines
88 KiB
C
/* packet-edonkey.c
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* Routines for edonkey dissection
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* Copyright 2003, Xuan Zhang <xz@aemail4u.com>
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* eDonkey dissector based on protocol descriptions from mldonkey:
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* http://savannah.nongnu.org/download/mldonkey/docs/Edonkey-Overnet/edonkey-protocol.txt
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* http://savannah.nongnu.org/download/mldonkey/docs/Edonkey-Overnet/overnet-protocol.txt
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/emem.h>
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#include "packet-edonkey.h"
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#include "packet-tcp.h"
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static int proto_edonkey = -1;
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static int hf_edonkey_message = -1;
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static int hf_edonkey_protocol = -1;
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static int hf_edonkey_message_length = -1;
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static int hf_edonkey_message_type = -1;
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static int hf_edonkey_client_hash = -1;
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static int hf_edonkey_server_hash = -1;
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static int hf_edonkey_file_hash = -1;
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static int hf_edonkey_client_id = -1;
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static int hf_edonkey_metatag_namesize = -1;
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static int hf_edonkey_metatag_type = -1;
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static int hf_edonkey_metatag = -1;
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static int hf_edonkey_metatag_name = -1;
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static int hf_edonkey_metatag_id = -1;
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static int hf_edonkey_search = -1;
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static int hf_edonkey_ip = -1;
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static int hf_edonkey_port = -1;
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static int hf_edonkey_hash = -1;
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static int hf_edonkey_part_count = -1;
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static int hf_edonkey_file_status = -1;
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static int hf_edonkey_directory = -1;
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static int hf_edonkey_string = -1;
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static int hf_edonkey_string_length = -1;
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static int hf_edonkey_fileinfo = -1;
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static int hf_edonkey_clientinfo = -1;
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static int hf_edonkey_serverinfo = -1;
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static int hf_emule_aich_partnum = -1;
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static int hf_emule_aich_root_hash = -1;
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static int hf_emule_aich_hash_entry = -1;
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static int hf_emule_aich_hash_id = -1;
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static int hf_emule_aich_hash = -1;
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static int hf_emule_multipacket_entry = -1;
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static int hf_emule_multipacket_opcode = -1;
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static int hf_emule_source_count = -1;
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static int hf_emule_zlib = -1;
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static int hf_overnet_peer = -1;
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static gint ett_edonkey = -1;
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static gint ett_edonkey_message = -1;
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static gint ett_edonkey_metatag = -1;
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static gint ett_edonkey_search = -1;
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static gint ett_edonkey_fileinfo = -1;
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static gint ett_edonkey_serverinfo = -1;
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static gint ett_edonkey_clientinfo = -1;
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static gint ett_emule_aichhash = -1;
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static gint ett_emule_multipacket = -1;
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static gint ett_emule_zlib = -1;
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static gint ett_overnet_peer = -1;
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/* desegmentation of eDonkey over TCP */
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static gboolean edonkey_desegment = TRUE;
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static const value_string edonkey_protocols[] = {
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{ EDONKEY_PROTO_EDONKEY, "eDonkey" },
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{ EDONKEY_PROTO_EMULE_EXT, "eMule Extensions" },
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{ EDONKEY_PROTO_EMULE_COMP, "eMule Compressed" },
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{ 0, NULL }
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};
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static const value_string edonkey_tcp_msgs[] = {
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{ EDONKEY_MSG_HELLO, "Hello" },
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{ EDONKEY_MSG_BAD_PROTO, "Bad Proto" },
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{ EDONKEY_MSG_GET_SERVER_LIST, "Get Server List" },
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{ EDONKEY_MSG_OFFER_FILES, "Offer Files" },
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{ EDONKEY_MSG_SEARCH_FILES, "Search Files" },
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{ EDONKEY_MSG_DISCONNECT, "Disconnect" },
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{ EDONKEY_MSG_GET_SOURCES, "Get Sources" },
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{ EDONKEY_MSG_SEARCH_USER, "Search User" },
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{ EDONKEY_MSG_CLIENT_CB_REQ, "Client Callback Request" },
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{ EDONKEY_MSG_MORE_RESULTS, "More Results" },
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{ EDONKEY_MSG_SERVER_LIST, "Server List" },
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{ EDONKEY_MSG_SEARCH_FILE_RESULTS, "Search File Results" },
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{ EDONKEY_MSG_SERVER_STATUS, "Server Status" },
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{ EDONKEY_MSG_SERVER_CB_REQ, "Server Callback Request" },
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{ EDONKEY_MSG_CALLBACK_FAIL, "Callback Fail" },
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{ EDONKEY_MSG_SERVER_MESSAGE, "Server Message" },
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{ EDONKEY_MSG_ID_CHANGE, "ID Change" },
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{ EDONKEY_MSG_SERVER_INFO_DATA, "Server Info Data" },
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{ EDONKEY_MSG_FOUND_SOURCES, "Found Sources" },
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{ EDONKEY_MSG_SEARCH_USER_RESULTS, "Search User Results" },
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{ EDONKEY_MSG_SENDING_PART, "Sending Part" },
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{ EDONKEY_MSG_REQUEST_PARTS, "Request Parts" },
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{ EDONKEY_MSG_NO_SUCH_FILE, "No Such File" },
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{ EDONKEY_MSG_END_OF_DOWNLOAD, "End of Download" },
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{ EDONKEY_MSG_VIEW_FILES, "View Files" },
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{ EDONKEY_MSG_VIEW_FILES_ANSWER, "View Files Answer" },
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{ EDONKEY_MSG_HELLO_ANSWER, "Hello Answer" },
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{ EDONKEY_MSG_NEW_CLIENT_ID, "New Client ID" },
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{ EDONKEY_MSG_CLIENT_MESSAGE, "Client Message" },
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{ EDONKEY_MSG_FILE_STATUS_REQUEST, "File Status Request" },
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{ EDONKEY_MSG_FILE_STATUS, "File Status" },
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{ EDONKEY_MSG_HASHSET_REQUEST, "Hashset Request" },
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{ EDONKEY_MSG_HASHSET_ANSWER, "Hashset Answer" },
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{ EDONKEY_MSG_SLOT_REQUEST, "Slot Request" },
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{ EDONKEY_MSG_SLOT_GIVEN, "Slot Given" },
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{ EDONKEY_MSG_SLOT_RELEASE, "Slot Release" },
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{ EDONKEY_MSG_SLOT_TAKEN, "Slot Taken" },
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{ EDONKEY_MSG_FILE_REQUEST, "File Request" },
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{ EDONKEY_MSG_FILE_REQUEST_ANSWER, "File Request Answer" },
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{ EDONKEY_MSG_GET_SHARED_DIRS, "Get Shared Directories" },
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{ EDONKEY_MSG_GET_SHARED_FILES, "Get Shared Files" },
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{ EDONKEY_MSG_SHARED_DIRS, "Shared Directores" },
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{ EDONKEY_MSG_SHARED_FILES, "Shared Files" },
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{ EDONKEY_MSG_SHARED_DENIED, "Shared Denied" },
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{ 0, NULL }
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};
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static const value_string emule_tcp_msgs[] = {
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{ EMULE_MSG_HELLO, "Hello" },
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{ EMULE_MSG_HELLO_ANSWER, "Hello Answer" },
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{ EMULE_MSG_DATA_COMPRESSED, "Data Compressed" },
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{ EMULE_MSG_QUEUE_RANKING, "Queue Ranking" },
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{ EMULE_MSG_SOURCES_REQUEST, "Sources Request" },
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{ EMULE_MSG_SOURCES_ANSWER, "Sources Answer" },
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{ EMULE_MSG_MULTIPACKET, "MultiPacket" },
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{ EMULE_MSG_MULTIPACKET_EXT, "MultiPacketExt" },
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{ EMULE_MSG_MULTIPACKET_ANSWER, "MultiPacket Answer" },
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{ EMULE_MSG_AICH_REQUEST, "AICH Hashset Request" },
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{ EMULE_MSG_AICH_ANSWER, "AICH Hashset Answer" },
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{ EMULE_MSG_AICHFILEHASH_ANSWER, "AICH Master Hash Request" },
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{ EMULE_MSG_AICHFILEHASH_REQUEST, "AICH Master Hash Answer" },
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{ EMULE_MSG_DATA_COMPRESSED_64, "Data Compressed (64bit)" },
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{ EMULE_MSG_SENDING_PART_64, "Sending Part (64bit)" },
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{ EMULE_MSG_REQUEST_PARTS_64, "Request Parts (64bit)" },
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{ 0, NULL }
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};
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static const value_string edonkey_udp_msgs[] = {
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{ EDONKEY_MSG_UDP_SERVER_STATUS_REQUEST, "Server Status Request" },
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{ EDONKEY_MSG_UDP_SERVER_STATUS, "Server Status" },
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{ EDONKEY_MSG_UDP_SEARCH_FILE, "Search File" },
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{ EDONKEY_MSG_UDP_SEARCH_FILE_RESULTS, "Search File Results" },
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{ EDONKEY_MSG_UDP_GET_SOURCES, "Get Sources" },
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{ EDONKEY_MSG_UDP_FOUND_SOURCES, "Found Sources" },
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{ EDONKEY_MSG_UDP_CALLBACK_REQUEST, "Callback Request" },
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{ EDONKEY_MSG_UDP_CALLBACK_FAIL, "Callback Fail" },
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{ EDONKEY_MSG_UDP_SERVER_LIST, "Server List" },
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{ EDONKEY_MSG_UDP_GET_SERVER_INFO, "Get Server Info" },
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{ EDONKEY_MSG_UDP_SERVER_INFO, "Server Info" },
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{ EDONKEY_MSG_UDP_GET_SERVER_LIST, "Get Server List" },
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/* eMule Extensions */
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{ EMULE_MSG_UDP_REASKFILEPING, "Reask File Ping" },
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{ EMULE_MSG_UDP_REASKACK, "Reask ACK" },
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{ EMULE_MSG_UDP_FILE_NOT_FOUND, "File not found" },
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{ EMULE_MSG_UDP_QUEUE_FULL, "Queue Full" },
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/* Overnet Extensions */
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{ OVERNET_MSG_UDP_CONNECT, "Connect" },
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{ OVERNET_MSG_UDP_CONNECT_REPLY, "Connect Reply" },
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{ OVERNET_MSG_UDP_PUBLICIZE, "Publicize" },
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{ OVERNET_MSG_UDP_PUBLICIZE_ACK, "Publicize ACK" },
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{ OVERNET_MSG_UDP_SEARCH, "Search" },
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{ OVERNET_MSG_UDP_SEARCH_NEXT, "Search Next" },
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{ OVERNET_MSG_UDP_SEARCH_INFO, "Search Info" },
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{ OVERNET_MSG_UDP_SEARCH_RESULT, "Search Result" },
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{ OVERNET_MSG_UDP_SEARCH_END, "Search End" },
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{ OVERNET_MSG_UDP_PUBLISH, "Publish" },
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{ OVERNET_MSG_UDP_PUBLISH_ACK, "Publish ACK" },
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{ OVERNET_MSG_UDP_IDENTIFY_REPLY, "Identify Reply" },
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{ OVERNET_MSG_UDP_IDENTIFY_ACK, "Identify ACK" },
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{ OVERNET_MSG_UDP_FIREWALL_CONNECTION, "Firewall Connection" },
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{ OVERNET_MSG_UDP_FIREWALL_CONNECTION_ACK, "Firewall Connection ACK" },
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{ OVERNET_MSG_UDP_FIREWALL_CONNECTION_NACK, "Firewall Connection NACK" },
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{ OVERNET_MSG_UDP_IP_QUERY, "IP Query" },
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{ OVERNET_MSG_UDP_IP_QUERY_ANSWER, "IP Query Answer" },
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{ OVERNET_MSG_UDP_IP_QUERY_END, "IP Query End" },
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{ OVERNET_MSG_UDP_IDENTIFY, "Identify" },
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{ 0, NULL }
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};
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static const value_string edonkey_special_tags[] = {
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{ EDONKEY_STAG_NAME, "Name" },
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{ EDONKEY_STAG_SIZE, "Size" },
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{ EDONKEY_STAG_TYPE, "Type" },
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{ EDONKEY_STAG_FORMAT, "Format" },
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{ EDONKEY_STAG_COLLECTION, "Collection" },
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{ EDONKEY_STAG_PART_PATH, "Part Path" },
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{ EDONKEY_STAG_PART_HASH, "Part Hash" },
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{ EDONKEY_STAG_COPIED, "Copied" },
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{ EDONKEY_STAG_GAP_START, "Gap Start" },
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{ EDONKEY_STAG_GAP_END, "Gap End" },
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{ EDONKEY_STAG_DESCRIPTION, "Description" },
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{ EDONKEY_STAG_PING, "Ping" },
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{ EDONKEY_STAG_FAIL, "Fail" },
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{ EDONKEY_STAG_PREFERENCE, "Preference" },
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{ EDONKEY_STAG_PORT, "Port" },
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{ EDONKEY_STAG_IP, "IP" },
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{ EDONKEY_STAG_VERSION, "Version" },
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{ EDONKEY_STAG_TEMPFILE, "Temporary File" },
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{ EDONKEY_STAG_PRIORITY, "Priority" },
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{ EDONKEY_STAG_STATUS, "Status" },
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{ EDONKEY_STAG_AVAILABILITY, "Availability" },
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{ EDONKEY_STAG_QTIME, "Queue Time" },
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{ EDONKEY_STAG_PARTS, "Parts" },
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{ EDONKEY_STAG_MOD_VERSION, "Mod Version" },
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{ EMULE_STAG_COMPRESSION, "Compression" },
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{ EMULE_STAG_UDP_CLIENT_PORT, "UDP Client Port" },
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{ EMULE_STAG_UDP_VERSION, "UDP Version" },
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{ EMULE_STAG_SOURCE_EXCHANGE, "Source Exchange" },
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{ EMULE_STAG_COMMENTS, "Comments" },
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{ EMULE_STAG_EXTENDED_REQUEST, "Extended Request" },
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{ EMULE_STAG_COMPATIBLE_CLIENT, "Compatible Client" },
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{ EMULE_STAG_COMPLETE_SOURCES, "Complete Sources" },
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{ EMULE_STAG_SIZE_HI, "Size (High Byte)" },
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{ EMULE_STAG_SERVER_VERSION, "Server Version" },
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{ EMULE_STAG_COMPAT_OPTIONS1, "Compatible Options" },
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{ EMULE_STAG_UDPPORTS, "UDP Ports" },
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{ EMULE_STAG_MISCOPTIONS1, "Misc Options 1" },
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{ EMULE_STAG_VERSION, "eMule Version" },
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{ EMULE_STAG_BUDDYIP, "Buddy IP" },
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{ EMULE_STAG_BUDDYUDP, "Buddy UDP" },
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{ EMULE_STAG_MISCOPTIONS2, "Misc Options 2" },
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{ 0, NULL }
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};
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static const value_string edonkey_search_ops[] = {
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{ EDONKEY_SEARCH_AND, "AND" },
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{ EDONKEY_SEARCH_OR, "OR" },
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{ EDONKEY_SEARCH_ANDNOT, "AND NOT" },
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{ 0, NULL }
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};
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static const value_string edonkey_search_conds[] = {
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{ EDONKEY_SEARCH_MIN, "MIN" },
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{ EDONKEY_SEARCH_MAX, "MAX" },
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{ 0, NULL }
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};
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/* Dissects a generic eDonkey list */
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static int dissect_edonkey_list(tvbuff_t *tvb, packet_info *pinfo _U_,
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int offset, proto_tree *tree,
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int listnum_length, const char* listdesc,
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int (*item_dissector)(tvbuff_t *, packet_info *, int, proto_tree *))
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{
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/* <List> ::= <List Size> <Item>* */
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guint32 listnum, i;
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switch (listnum_length) {
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case 1:
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listnum = tvb_get_guint8(tvb, offset);
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break;
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case 2:
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listnum = tvb_get_letohs(tvb, offset);
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break;
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case 4:
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listnum = tvb_get_letohl(tvb, offset);
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break;
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default:
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/* Not Supported */
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return offset;
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}
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proto_tree_add_text(tree, tvb, offset, listnum_length, "%s List Size: %u", listdesc, listnum);
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offset+=listnum_length;
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for (i=0; i<listnum; i++)
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{
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offset = (*item_dissector)(tvb, pinfo, offset, tree);
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}
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return offset;
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}
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static gint lookup_str_index(gchar* str, gint length, const value_string *vs)
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{
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gint i = 0;
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if (str == NULL) return -1;
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while (vs[i].strptr) {
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if (strncasecmp(str, vs[i].strptr, length) == 0)
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return i;
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i++;
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}
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return -1;
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}
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static guint8 edonkey_metatag_name_get_type(tvbuff_t *tvb, gint start, gint length, guint8 special_tagtype)
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{
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guint8 *tag_name;
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if (match_strval(special_tagtype, edonkey_special_tags) == NULL) {
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gint index;
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tag_name = tvb_get_ephemeral_string(tvb, start, length);
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index = lookup_str_index(tag_name, length, edonkey_special_tags);
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if (index < 0)
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return EDONKEY_STAG_UNKNOWN;
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else return edonkey_special_tags[index].value;
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}
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else return special_tagtype;
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return EDONKEY_STAG_UNKNOWN;
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}
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static proto_item* edonkey_tree_add_metatag_name(proto_tree *tree, tvbuff_t *tvb,
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gint start, gint length, guint8 special_tagtype)
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{
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const gchar *tag_name;
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tag_name = match_strval(special_tagtype, edonkey_special_tags);
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if (tag_name == NULL) {
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return proto_tree_add_item(tree, hf_edonkey_metatag_name, tvb, start, length, FALSE);
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}
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else {
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return proto_tree_add_uint_format(tree, hf_edonkey_metatag_id, tvb, start, length,
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special_tagtype, "Meta Tag Name: %s (0x%02x)",
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tag_name, special_tagtype);
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}
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}
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/* Dissects the eDonkey meta tag */
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static int dissect_edonkey_metatag(tvbuff_t *tvb, packet_info *pinfo _U_,
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int offset, proto_tree *tree)
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{
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/* <Meta Tag> ::= <Tag Type (guint8)> <Tag Name> <Tag> */
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/* <Tag Name> ::= <Tag Name Size (guint16)> <Special Tag> || <String> */
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/* <Tag Name> ::= <Special Tag> iff Tag Type had the top bit set */
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proto_item *ti;
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proto_tree *metatag_tree;
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guint8 real_tag_type, tag_type, special_tagtype, trans_tagtype, tag_value_guint8;
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guint16 tag_name_size, string_length, array_length, tag_value_guint16;
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guint32 tag_length, blob_length, tag_value_guint32;
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int tag_offset;
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real_tag_type = tag_type = tvb_get_guint8(tvb, offset);
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if (tag_type & EDONKEY_MTAG_SHORTNAME) {
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real_tag_type &= ~EDONKEY_MTAG_SHORTNAME;
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tag_name_size = 1;
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special_tagtype = tvb_get_guint8(tvb, offset+1);
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tag_length = 2;
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} else {
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tag_name_size = tvb_get_letohs(tvb, offset+1);
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special_tagtype = tvb_get_guint8(tvb, offset+3);
|
|
tag_length = 3 + tag_name_size;
|
|
}
|
|
|
|
tag_offset = offset + tag_length;
|
|
|
|
switch (real_tag_type)
|
|
{
|
|
case EDONKEY_MTAG_HASH:
|
|
/* <Tag> ::= HASH */
|
|
tag_length += 16;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
proto_tree_add_item(metatag_tree, hf_edonkey_hash, tvb, tag_offset, 16, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MTAG_STRING:
|
|
/* <Tag> ::= <Length (guint16)> <String> */
|
|
string_length = tvb_get_letohs(tvb, tag_offset);
|
|
tag_length += 2+string_length;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_string_length, tvb, tag_offset, 2, string_length);
|
|
proto_tree_add_item(metatag_tree, hf_edonkey_string, tvb, tag_offset+2, string_length, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MTAG_DWORD:
|
|
/* <Tag> ::= guint32 */
|
|
tag_length += 4;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
trans_tagtype = edonkey_metatag_name_get_type(tvb, offset+3, tag_name_size, special_tagtype);
|
|
if (trans_tagtype == EDONKEY_STAG_IP) {
|
|
proto_tree_add_item(metatag_tree, hf_edonkey_ip, tvb, tag_offset, 4, FALSE);
|
|
}
|
|
else if (trans_tagtype == EMULE_STAG_SERVER_VERSION) {
|
|
guint16 maj, min;
|
|
min = tvb_get_letohs(tvb, tag_offset);
|
|
maj = tvb_get_letohs(tvb, tag_offset+2);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 4, "Meta Tag Value: %u.%u", maj, min);
|
|
}
|
|
else {
|
|
tag_value_guint32 = tvb_get_letohl(tvb, tag_offset);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 4, "Meta Tag Value: %u", tag_value_guint32);
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MTAG_FLOAT:
|
|
/* <Tag> ::= 4 byte float */
|
|
tag_length += 4;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
break;
|
|
|
|
case EDONKEY_MTAG_WORD:
|
|
/* <Tag> ::= guint16 */
|
|
tag_length += 2;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
{
|
|
tag_value_guint16 = tvb_get_letohs(tvb, tag_offset);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 2, "Meta Tag Value: %u", tag_value_guint16);
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MTAG_BYTE:
|
|
/* <Tag> ::= guint8 */
|
|
tag_length += 1;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
{
|
|
tag_value_guint8 = tvb_get_guint8(tvb, tag_offset);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 1, "Meta Tag Value: %u", tag_value_guint8);
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MTAG_BOOL:
|
|
/* <Tag> ::= <Bool (guint8)> */
|
|
tag_length += 1;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
{
|
|
tag_value_guint8 = tvb_get_guint8(tvb, tag_offset);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 1, "Meta Tag Value: %u", tag_value_guint8);
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MTAG_BOOL_ARRAY:
|
|
/* <Tag> ::= <Length (guint16)> <BoolArray> */
|
|
array_length = tvb_get_letohs(tvb, tag_offset);
|
|
/*
|
|
* This is allegedly what the protocol uses, rather than the
|
|
* correct value of (array_length+7)/8
|
|
* Therefore an extra unused byte is transmitted if the array
|
|
* is a multiple of 8 longs.
|
|
*/
|
|
tag_length += 2+(array_length/8)+1;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 2, "Boolean Array Length: %u", array_length);
|
|
break;
|
|
|
|
case EDONKEY_MTAG_BLOB:
|
|
/* <Tag> ::= <Length (guint32)> <BLOB> */
|
|
blob_length = tvb_get_letohl(tvb, tag_offset);
|
|
tag_length += 4+blob_length;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (tag_type==real_tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
proto_tree_add_text(metatag_tree, tvb, tag_offset, 2, "BLOB Length: %u", blob_length);
|
|
break;
|
|
|
|
case EDONKEY_MTAG_BSOB:
|
|
/* This is possibly a Binary Small OBject, like a BLOB but with an 8 or 16-bit length field */
|
|
/* That's a complete guess though, so don't handle it yet. */
|
|
case EDONKEY_MTAG_UNKNOWN:
|
|
default:
|
|
if (real_tag_type>=EDONKEY_MTAG_STR1 && real_tag_type<=EDONKEY_MTAG_STR16) {
|
|
/* <Tag> ::= <String> */
|
|
string_length = real_tag_type-EDONKEY_MTAG_STR1+1;
|
|
tag_length += string_length;
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_type, tvb, offset, 1, tag_type);
|
|
if (real_tag_type==tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
proto_tree_add_item(metatag_tree, hf_edonkey_string, tvb, tag_offset, string_length, FALSE);
|
|
|
|
} else {
|
|
/* Unknown tag type - actual tag length is also unknown */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_metatag, tvb, offset, tag_length, FALSE);
|
|
metatag_tree = proto_item_add_subtree(ti, ett_edonkey_metatag);
|
|
proto_tree_add_text(metatag_tree, tvb, offset, 1, "Unknown Meta Tag Type (0x%02x)", tag_type);
|
|
if (real_tag_type==tag_type)
|
|
proto_tree_add_uint(metatag_tree, hf_edonkey_metatag_namesize, tvb, offset+1, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(metatag_tree, tvb, tag_offset-tag_name_size, tag_name_size, special_tagtype);
|
|
}
|
|
break;
|
|
|
|
}
|
|
|
|
return offset + tag_length;
|
|
}
|
|
|
|
/* Dissects the eDonkey address */
|
|
static int dissect_edonkey_address(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Address> ::= <IP> <Port> */
|
|
/* guint32 ip = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_ipv4(tree, hf_edonkey_ip, tvb, offset, 4, ip); */
|
|
proto_tree_add_item(tree, hf_edonkey_ip, tvb, offset, 4, FALSE);
|
|
proto_tree_add_item(tree, hf_edonkey_port, tvb, offset+4, 2, TRUE);
|
|
return offset+6;
|
|
}
|
|
|
|
/* Dissects the eDonkey address list */
|
|
static int dissect_edonkey_address_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Address List> ::= <List Size (guint8)> <Address>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 1, "Address", dissect_edonkey_address);
|
|
}
|
|
|
|
/* Dissects the eDonkey hash */
|
|
static int dissect_edonkey_hash(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <hash> ::= HASH (16 word MD4 digest) */
|
|
proto_tree_add_item(tree, hf_edonkey_hash, tvb, offset, 16, FALSE);
|
|
return offset+16;
|
|
}
|
|
|
|
/* Dissects the eDonkey file hash */
|
|
static int dissect_edonkey_file_hash(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <File hash> ::= HASH (16 word MD4 digest) */
|
|
proto_tree_add_item(tree, hf_edonkey_file_hash, tvb, offset, 16, FALSE);
|
|
return offset+16;
|
|
}
|
|
|
|
/* Dissects the eDonkey hash list */
|
|
static int dissect_edonkey_hash_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Hash List> ::= <File Hash> <List Size (guint16)> <Hash>* */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 2, "Hash", dissect_edonkey_hash);
|
|
}
|
|
|
|
/* Dissects the eDonkey meta tag list */
|
|
static int dissect_edonkey_metatag_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Meta Tag List> ::= <List Size (guint32)> <Meta tag>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 4, "Meta Tag", dissect_edonkey_metatag);
|
|
}
|
|
|
|
/* Dissects the eDonkey String */
|
|
static int dissect_edonkey_string(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <String> ::= <String length (guint16)> DATA */
|
|
guint16 string_length = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_edonkey_string_length, tvb, offset, 2, string_length);
|
|
proto_tree_add_item(tree, hf_edonkey_string, tvb, offset+2, string_length, FALSE);
|
|
return offset+2+string_length;
|
|
}
|
|
|
|
/* Dissects the eDonkey Directory */
|
|
static int dissect_edonkey_directory(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Directory> ::= <String> */
|
|
guint16 string_length = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_edonkey_string_length, tvb, offset, 2, string_length);
|
|
proto_tree_add_item(tree, hf_edonkey_directory, tvb, offset+2, string_length, FALSE);
|
|
return offset+2+string_length;
|
|
}
|
|
|
|
/* Dissects the eDonkey Filename */
|
|
static int dissect_edonkey_file_name(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Filename> ::= <String> */
|
|
return dissect_edonkey_string(tvb, pinfo, offset, tree);
|
|
}
|
|
|
|
/* Dissects the eDonkey File Status */
|
|
static int dissect_edonkey_file_status(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
guint16 partcount, arrlen;
|
|
|
|
/* <File Status> ::= <Part Count> <Part Status> */
|
|
partcount = tvb_get_letohs(tvb, offset);
|
|
arrlen = (partcount+7)/8;
|
|
|
|
proto_tree_add_uint(tree, hf_edonkey_part_count, tvb, offset, 2, partcount);
|
|
if (partcount>0) {
|
|
proto_tree_add_item(tree, hf_edonkey_file_status, tvb, offset+2, arrlen, FALSE);
|
|
}
|
|
return offset+2+arrlen;
|
|
}
|
|
|
|
|
|
/* Dissects the eDonkey directory list */
|
|
static int dissect_edonkey_directory_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Directory List> ::= <List Size (guint32)> <Directory>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 4, "Directory", dissect_edonkey_directory);
|
|
}
|
|
|
|
/* Dissects the eDonkey server hash */
|
|
static int dissect_edonkey_server_hash(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Server hash> ::= HASH (16 word MD4 digest) */
|
|
proto_tree_add_item(tree, hf_edonkey_server_hash, tvb, offset, 16, FALSE);
|
|
return offset+16;
|
|
}
|
|
|
|
/* Dissects the eDonkey client hash */
|
|
static int dissect_edonkey_client_hash(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Client hash> ::= HASH (16 word MD4 digest) */
|
|
proto_tree_add_item(tree, hf_edonkey_client_hash, tvb, offset, 16, FALSE);
|
|
return offset+16;
|
|
}
|
|
|
|
/* Dissects the eDonkey client ID */
|
|
static int dissect_edonkey_client_id(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree, gboolean fileinfo)
|
|
{
|
|
proto_item *ti;
|
|
/* <Client ID> ::= guint32 */
|
|
/* guint32 ip = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_ipv4(tree, hf_edonkey_client_id, tvb, offset, 4, ip); */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_client_id, tvb, offset, 4, FALSE);
|
|
if (fileinfo) {
|
|
guint32 ip = tvb_get_letohl(tvb, offset);
|
|
guint16 port = tvb_get_letohs(tvb, offset+4);
|
|
if (ip==0xfcfcfcfc && port==0xfcfc) {
|
|
proto_item_append_text(ti, " (myself, incomplete file)");
|
|
} else if (ip==0xfbfbfbfb && port==0xfbfb) {
|
|
proto_item_append_text(ti, " (myself, complete file)");
|
|
}
|
|
}
|
|
return offset+4;
|
|
}
|
|
|
|
/* Dissects the eDonkey port */
|
|
static int dissect_edonkey_port(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Port> ::= guint16 */
|
|
proto_tree_add_item(tree, hf_edonkey_port, tvb, offset, 2, TRUE);
|
|
return offset+2;
|
|
}
|
|
|
|
/* Dissects the eDonkey start offset */
|
|
static int dissect_edonkey_start_offset(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Start Offset> ::= guint32 */
|
|
guint32 start = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Start Offset: %u", start);
|
|
return offset+4;
|
|
}
|
|
|
|
static int dissect_edonkey_start_offset_64(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Start Offset> ::= guint64 */
|
|
guint64 start = tvb_get_letoh64(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 8, "Start Offset: %llu", start);
|
|
return offset+8;
|
|
}
|
|
|
|
/* Dissects the eDonkey end offset */
|
|
static int dissect_edonkey_end_offset(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <End Offset> ::= guint32 */
|
|
guint32 end = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "End Offset: %u", end);
|
|
return offset+4;
|
|
}
|
|
|
|
static int dissect_edonkey_end_offset_64(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <End Offset> ::= guint64 */
|
|
guint64 end = tvb_get_letoh64(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 8, "End Offset: %llu", end);
|
|
return offset+8;
|
|
}
|
|
|
|
/* Dissects the eDonkey client info */
|
|
static int dissect_edonkey_client_info(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Client info> ::= <Client hash> <Client ID> <Port> <Meta tag list> */
|
|
proto_item *ti;
|
|
proto_tree *clientinfo_tree;
|
|
/* Add subtree for client info */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_clientinfo, tvb, offset, 0, FALSE);
|
|
clientinfo_tree = proto_item_add_subtree(ti, ett_edonkey_clientinfo);
|
|
offset = dissect_edonkey_client_hash(tvb, pinfo, offset, clientinfo_tree);
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, clientinfo_tree, FALSE);
|
|
offset = dissect_edonkey_port(tvb, pinfo, offset, clientinfo_tree);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset, clientinfo_tree);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissects the eDonkey client info list */
|
|
static int dissect_edonkey_client_info_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Client Info List> ::= <List Size (guint32)> <Client Info>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 4, "Client Info", dissect_edonkey_client_info);
|
|
}
|
|
|
|
/* Dissects the eDonkey server info */
|
|
static int dissect_edonkey_server_info(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Server info> ::= <Server hash> <Server Address> <Meta tag list> */
|
|
proto_item *ti;
|
|
proto_tree *serverinfo_tree;
|
|
/* Add subtree for server info */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_serverinfo, tvb, offset, 0, FALSE);
|
|
serverinfo_tree = proto_item_add_subtree(ti, ett_edonkey_serverinfo);
|
|
offset = dissect_edonkey_server_hash(tvb, pinfo, offset, serverinfo_tree);
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, serverinfo_tree);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset, serverinfo_tree);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissects the eDonkey file info */
|
|
static int dissect_edonkey_file_info(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <File info> ::= <File hash> <Client ID> <Port> <Meta tag list> */
|
|
proto_item *ti;
|
|
proto_tree *fileinfo_tree;
|
|
int startoff;
|
|
/* Add subtree for file info */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_fileinfo, tvb, offset, 0, FALSE);
|
|
startoff = offset;
|
|
fileinfo_tree = proto_item_add_subtree(ti, ett_edonkey_fileinfo);
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, fileinfo_tree);
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, fileinfo_tree, TRUE);
|
|
offset = dissect_edonkey_port(tvb, pinfo, offset, fileinfo_tree);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset, fileinfo_tree);
|
|
proto_item_set_len(ti, offset-startoff);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissects the eDonkey file info list */
|
|
static int dissect_edonkey_file_info_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <File Info List> ::= <List Size (guint32)> <File Info>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 4, "File Info", dissect_edonkey_file_info);
|
|
}
|
|
|
|
/* Dissects the eMule address list */
|
|
static int dissect_emule_address_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Address List> ::= <List Size (guint16)> <Address>* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 2, "Address", dissect_edonkey_address);
|
|
}
|
|
|
|
static int dissect_emule_aich_root_hash(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <AICH Root Hash> ::= HASH (20 byte SHA1 digest) */
|
|
proto_tree_add_item(tree, hf_emule_aich_root_hash, tvb, offset, 20, FALSE);
|
|
return offset + 20;
|
|
}
|
|
|
|
static int dissect_emule_aich_hash_list_entry(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
guint16 hashid;
|
|
proto_item *ti;
|
|
proto_tree *aichhash_tree;
|
|
/* <AICH Hash List Entry> ::= <AICH Hash ID> <AICH Hash> */
|
|
ti = proto_tree_add_item(tree, hf_emule_aich_hash_entry, tvb, offset, 22, FALSE);
|
|
aichhash_tree = proto_item_add_subtree(ti, ett_emule_aichhash);
|
|
|
|
hashid = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(aichhash_tree, hf_emule_aich_hash_id, tvb, offset, 2, hashid);
|
|
proto_tree_add_item(aichhash_tree, hf_emule_aich_hash, tvb, offset+2, 20, FALSE);
|
|
return offset + 22;
|
|
}
|
|
|
|
static int dissect_emule_aich_hash_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <AICH Hash List> ::= <List Size (guint16)> < <AICH Hash ID> <AICH Hash> >* */
|
|
return dissect_edonkey_list(tvb, pinfo, offset, tree, 2, "AICH Hash", dissect_emule_aich_hash_list_entry);
|
|
}
|
|
|
|
static int dissect_emule_multipacket(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, int eoffset, proto_tree *tree, int isext)
|
|
{
|
|
guint8 opcode, nextop;
|
|
guint16 namelen, partcount, arrlen, oplen;
|
|
guint32 sourcecount;
|
|
proto_item *ti;
|
|
proto_tree *mp_tree;
|
|
|
|
/* <MultiPacket> ::= <File Hash> <Opcodes>* */
|
|
/* <MultiPacketExt> ::= <File Hash> <FileLength> <Opcodes>* */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
|
|
if (isext) {
|
|
guint64 filelen = tvb_get_letoh64(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 8, "File Length: %llu", filelen);
|
|
offset += 8;
|
|
}
|
|
|
|
while (offset<eoffset) {
|
|
opcode = tvb_get_guint8(tvb, offset);
|
|
|
|
switch (opcode) {
|
|
case EDONKEY_MSG_FILE_STATUS_REQUEST:
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 1, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "File Status Request (0x%02x)", opcode);
|
|
offset += 1;
|
|
break;
|
|
case EDONKEY_MSG_FILE_REQUEST:
|
|
partcount = 443; /* Invalid */
|
|
sourcecount = 65536; /* Out of range */
|
|
arrlen = 0;
|
|
oplen = 1;
|
|
|
|
if (offset+2<eoffset) {
|
|
nextop = tvb_get_guint8(tvb, offset+1);
|
|
if (nextop!=EDONKEY_MSG_FILE_STATUS_REQUEST &&
|
|
nextop!=EMULE_MSG_SOURCES_REQUEST &&
|
|
nextop!=EMULE_MSG_AICHFILEHASH_REQUEST) {
|
|
|
|
partcount = tvb_get_letohs(tvb, offset+1);
|
|
if (partcount<=442) {
|
|
arrlen = (partcount+7)/8;
|
|
oplen += 2+arrlen;
|
|
|
|
if (offset+2+arrlen+2<eoffset) {
|
|
nextop = tvb_get_guint8(tvb, offset+2+arrlen+1);
|
|
if (nextop!=EDONKEY_MSG_FILE_STATUS_REQUEST &&
|
|
nextop!=EMULE_MSG_SOURCES_REQUEST &&
|
|
nextop!=EMULE_MSG_AICHFILEHASH_REQUEST) {
|
|
|
|
sourcecount = tvb_get_letohs(tvb, offset+2+arrlen+1);
|
|
oplen += 2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, oplen, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "File Name Request (0x%02x)", opcode);
|
|
if (partcount<=442) {
|
|
dissect_edonkey_file_status(tvb, pinfo, offset+1, mp_tree);
|
|
if (sourcecount<65536) {
|
|
proto_tree_add_uint(mp_tree, hf_emule_source_count, tvb, offset+3+arrlen, 2, sourcecount);
|
|
}
|
|
}
|
|
offset += oplen;
|
|
break;
|
|
case EMULE_MSG_SOURCES_REQUEST:
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 1, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "Sources Request (0x%02x)", opcode);
|
|
offset += 1;
|
|
break;
|
|
case EMULE_MSG_AICHFILEHASH_REQUEST:
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 1, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "AICH Root Hash Request (0x%02x)", opcode);
|
|
offset += 1;
|
|
break;
|
|
|
|
case EDONKEY_MSG_FILE_STATUS:
|
|
partcount = tvb_get_letohs(tvb, offset+1);
|
|
arrlen = (partcount+7)/8;
|
|
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 3+arrlen, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "File Status (0x%02x)", opcode);
|
|
offset = dissect_edonkey_file_status(tvb, pinfo, offset+1, mp_tree);
|
|
break;
|
|
case EDONKEY_MSG_FILE_REQUEST_ANSWER:
|
|
namelen = tvb_get_letohs(tvb, offset+1);
|
|
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 3+namelen, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "File Name (0x%02x)", opcode);
|
|
offset = dissect_edonkey_file_name(tvb, pinfo, offset+1, mp_tree);
|
|
break;
|
|
case EMULE_MSG_AICHFILEHASH_ANSWER:
|
|
ti = proto_tree_add_item(tree, hf_emule_multipacket_entry, tvb, offset, 21, FALSE);
|
|
mp_tree = proto_item_add_subtree(ti, ett_emule_multipacket);
|
|
|
|
proto_tree_add_uint_format(mp_tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "AICH Root Hash (0x%02x)", opcode);
|
|
proto_tree_add_item(mp_tree, hf_emule_aich_root_hash, tvb, offset+1, 20, FALSE);
|
|
offset += 21;
|
|
break;
|
|
|
|
default:
|
|
/* Unknown opcode means we can't continue parsing the stream */
|
|
proto_tree_add_uint_format(tree, hf_emule_multipacket_opcode, tvb, offset, 1,
|
|
opcode, "Unknown MultiPacket opcode (0x%02x)", opcode);
|
|
return offset+1;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* Dissects the Overnet peer type */
|
|
static int dissect_overnet_peertype(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Peer type> ::= guint8 */
|
|
guint8 peertype = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Peer Type: %u", peertype);
|
|
return offset+1;
|
|
}
|
|
|
|
/* Dissects the Overnet peer */
|
|
static int dissect_overnet_peer(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Peer> ::= <Hash> <Address> <Peer type> */
|
|
proto_item *ti;
|
|
proto_tree *peer_tree;
|
|
ti = proto_tree_add_item(tree, hf_overnet_peer, tvb, offset, 16 + 6 + 1, FALSE);
|
|
peer_tree = proto_item_add_subtree(ti, ett_overnet_peer);
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, peer_tree);
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, peer_tree);
|
|
offset = dissect_overnet_peertype(tvb, pinfo, offset, peer_tree);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissects the eDonkey search query */
|
|
static int dissect_edonkey_search_query(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, proto_tree *tree)
|
|
{
|
|
/* <Search Query> ::= <Search Type> <Search> */
|
|
proto_item *ti;
|
|
proto_tree *search_tree;
|
|
guint8 search_type, operator, special_tagtype, limit_type;
|
|
guint16 tag_name_size, string_length;
|
|
guint32 search_length, limit;
|
|
int string_offset, tag_name_offset;
|
|
|
|
search_type = tvb_get_guint8(tvb, offset);
|
|
search_length = 1;
|
|
|
|
switch (search_type)
|
|
{
|
|
case EDONKEY_SEARCH_BOOL:
|
|
/* <Search> ::= <Operator> <Search Query> <Search Query> */
|
|
search_length += 1;
|
|
operator = tvb_get_guint8(tvb, offset+1);
|
|
|
|
/* Add subtree for search entry */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_search, tvb, offset, search_length, FALSE);
|
|
search_tree = proto_item_add_subtree(ti, ett_edonkey_search);
|
|
|
|
/* Add query info */
|
|
proto_tree_add_text(search_tree, tvb, offset, 2, "Boolean search (0x%02x): %s (0x%02x)",
|
|
search_type, val_to_str(operator, edonkey_search_ops, "Unknown"), operator);
|
|
|
|
offset+=2;
|
|
offset = dissect_edonkey_search_query(tvb, pinfo, offset, search_tree);
|
|
offset = dissect_edonkey_search_query(tvb, pinfo, offset, search_tree);
|
|
break;
|
|
|
|
case EDONKEY_SEARCH_NAME:
|
|
/* <Search> ::= <String> */
|
|
string_offset = offset + search_length;
|
|
string_length = tvb_get_letohs(tvb, string_offset);
|
|
search_length += 2+string_length;
|
|
|
|
/* Add subtree for search entry */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_search, tvb, offset, search_length, FALSE);
|
|
search_tree = proto_item_add_subtree(ti, ett_edonkey_search);
|
|
|
|
/* Add query info */
|
|
proto_tree_add_text(search_tree, tvb, offset, 1, "Search by name (0x%02x)", search_type);
|
|
proto_tree_add_uint(search_tree, hf_edonkey_string_length, tvb, string_offset, 2, string_length);
|
|
proto_tree_add_item(search_tree, hf_edonkey_string, tvb, string_offset+2, string_length, FALSE);
|
|
offset += search_length;
|
|
break;
|
|
|
|
case EDONKEY_SEARCH_META:
|
|
/* <Search> ::= <String> <Meta tag Name> */
|
|
string_offset = offset + search_length;
|
|
string_length = tvb_get_letohs(tvb, offset+1);
|
|
search_length += 2+string_length;
|
|
|
|
tag_name_offset = offset + search_length;
|
|
tag_name_size = tvb_get_letohs(tvb, tag_name_offset);
|
|
special_tagtype = tvb_get_guint8(tvb, tag_name_offset+2);
|
|
search_length += 2 + tag_name_size;
|
|
|
|
/* Add subtree for search entry */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_search, tvb, offset, search_length, FALSE);
|
|
search_tree = proto_item_add_subtree(ti, ett_edonkey_search);
|
|
|
|
/* Add query info */
|
|
proto_tree_add_text(search_tree, tvb, offset, 1, "Search by metadata (0x%02x)", search_type);
|
|
proto_tree_add_uint(search_tree, hf_edonkey_string_length, tvb, string_offset, 2, string_length);
|
|
proto_tree_add_item(search_tree, hf_edonkey_string, tvb, string_offset+2, string_length, FALSE);
|
|
proto_tree_add_uint(search_tree, hf_edonkey_metatag_namesize, tvb, tag_name_offset, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(search_tree, tvb, tag_name_offset+2, tag_name_size, special_tagtype);
|
|
offset += search_length;
|
|
break;
|
|
|
|
case EDONKEY_SEARCH_LIMIT:
|
|
/* <Search> ::= <Limit (guint32)> <Minmax> <Meta tag Name> */
|
|
search_length += 5; /* 4 bytes for the limit, one for the minmax */
|
|
limit = tvb_get_letohl(tvb, offset+1);
|
|
limit_type = tvb_get_guint8(tvb, offset+5);
|
|
|
|
tag_name_offset = offset + search_length;
|
|
tag_name_size = tvb_get_letohs(tvb, tag_name_offset);
|
|
special_tagtype = tvb_get_guint8(tvb, tag_name_offset+2);
|
|
search_length += 2 + tag_name_size;
|
|
|
|
/* Add subtree for search entry */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_search, tvb, offset, search_length, FALSE);
|
|
search_tree = proto_item_add_subtree(ti, ett_edonkey_search);
|
|
|
|
/* Add query info */
|
|
proto_tree_add_text(search_tree, tvb, offset, 6, "Search by limit (0x%02x): %s %u",
|
|
search_type, val_to_str(limit_type, edonkey_search_conds, "Unknown"), limit);
|
|
proto_tree_add_uint(search_tree, hf_edonkey_metatag_namesize, tvb, tag_name_offset, 2, tag_name_size);
|
|
edonkey_tree_add_metatag_name(search_tree, tvb, tag_name_offset+2, tag_name_size, special_tagtype);
|
|
offset += search_length;
|
|
break;
|
|
|
|
default:
|
|
/* Unknown search type - actual search length is also unknown */
|
|
ti = proto_tree_add_item(tree, hf_edonkey_search, tvb, offset, search_length, FALSE);
|
|
search_tree = proto_item_add_subtree(ti, ett_edonkey_search);
|
|
proto_tree_add_text(search_tree, tvb, offset, search_length, "Unknown Search (0x%02x)", search_type);
|
|
offset += search_length;
|
|
break;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static void dissect_edonkey_tcp_message(guint8 msg_type,
|
|
tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, int length, proto_tree *tree)
|
|
{
|
|
int msg_start, msg_end, bytes_remaining;
|
|
guint8 hello, more;
|
|
guint32 nusers, nfiles;
|
|
|
|
if (tree == NULL) return;
|
|
|
|
bytes_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
if ((length < 0) || (length > bytes_remaining)) length = bytes_remaining;
|
|
if (length <= 0) return;
|
|
|
|
msg_start = offset;
|
|
msg_end = offset + length;
|
|
|
|
switch (msg_type) {
|
|
case EDONKEY_MSG_HELLO:
|
|
/* Client to Server: <Client Info> */
|
|
/* Client to Client: 0x10 <Client Info> */
|
|
hello = tvb_get_guint8(tvb, offset);
|
|
if (hello == 0x10) /* Hello Client */
|
|
offset += 1;
|
|
offset = dissect_edonkey_client_info(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_HELLO_ANSWER: /* Hello Answer: <Client Info> <Server address> */
|
|
offset = dissect_edonkey_client_info(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SERVER_CB_REQ: /* Server Callback Request: <Client address> */
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SERVER_INFO_DATA: /* Server Info Data: <Server Info> */
|
|
offset = dissect_edonkey_server_info(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SERVER_LIST: /* Server List: <Address List> */
|
|
offset = dissect_edonkey_address_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_OFFER_FILES: /* Offer Files: <File info List> */
|
|
case EDONKEY_MSG_VIEW_FILES_ANSWER: /* View Files Answer: <File info list> */
|
|
offset = dissect_edonkey_file_info_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SEARCH_FILE_RESULTS: /* Search File Results: <File Info list> <More> */
|
|
offset = dissect_edonkey_file_info_list(tvb, pinfo, offset, tree);
|
|
more = tvb_get_guint8(tvb, offset);
|
|
if (more)
|
|
proto_tree_add_text(tree, tvb, offset, 1, "More: TRUE (0x%02x)", more);
|
|
else proto_tree_add_text(tree, tvb, offset, 1, "More: FALSE (0x%02x)", more);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SEARCH_FILES: /* Search File: <Search query> */
|
|
case EDONKEY_MSG_SEARCH_USER: /* Search User: <Search query> */
|
|
offset = dissect_edonkey_search_query(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_GET_SOURCES: /* Get Sources: <File Hash> */
|
|
case EDONKEY_MSG_NO_SUCH_FILE: /* No Such File: <File Hash> */
|
|
case EDONKEY_MSG_END_OF_DOWNLOAD: /* End of Download: <File Hash> */
|
|
case EDONKEY_MSG_FILE_STATUS_REQUEST: /* File Status Request: <File Hash> */
|
|
case EDONKEY_MSG_HASHSET_REQUEST: /* Hashset Request: <File Hash> */
|
|
case EDONKEY_MSG_SLOT_REQUEST: /* Slot Request: <File Hash> */
|
|
case EDONKEY_MSG_FILE_REQUEST: /* File Request: <File Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_FOUND_SOURCES: /* Found Sources: <File Hash> <Address List> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_address_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_CLIENT_CB_REQ: /* Client Callback Request: <Client ID> */
|
|
case EDONKEY_MSG_CALLBACK_FAIL: /* Callback Fail: <Client ID> */
|
|
case EDONKEY_MSG_ID_CHANGE: /* ID Change: <Client ID> */
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MSG_NEW_CLIENT_ID: /* New Client ID: <Client ID> <Client ID> */
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SERVER_MESSAGE: /* Server Message: <String> */
|
|
case EDONKEY_MSG_CLIENT_MESSAGE: /* Client Message: <String> */
|
|
offset = dissect_edonkey_string(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SERVER_STATUS: /* Server Status: <Nusers> <Nfiles> */
|
|
nusers = tvb_get_letohl(tvb, offset);
|
|
nfiles = tvb_get_letohl(tvb, offset+4);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Number of Users: %u", nusers);
|
|
proto_tree_add_text(tree, tvb, offset+4, 4, "Number of Files: %u", nfiles);
|
|
break;
|
|
|
|
case EDONKEY_MSG_FILE_STATUS: /* File Status: <File hash> <Part Count> <Part Status>? */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_file_status(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_FILE_REQUEST_ANSWER: /* File Request Answer: <File hash> <File name> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_file_name(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_REQUEST_PARTS: /* Request Parts: <File hash> <Start offset>(3) <End offset>(3) */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SENDING_PART: /* Sending Part: <File hash> <Start offset> <End offset> DATA */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset(tvb, pinfo, offset, tree);
|
|
if (msg_end > offset) {
|
|
bytes_remaining = msg_end - offset;
|
|
proto_tree_add_text(tree, tvb, offset, bytes_remaining, "Message Data (%d bytes)", bytes_remaining);
|
|
}
|
|
break;
|
|
|
|
|
|
case EDONKEY_MSG_SEARCH_USER_RESULTS: /* Search User Results: <Client info list> */
|
|
offset = dissect_edonkey_client_info_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_GET_SHARED_FILES: /* Get Shared Files: <Directory> */
|
|
offset = dissect_edonkey_directory(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SHARED_DIRS: /* Shared Dirs: <Directory List> */
|
|
offset = dissect_edonkey_directory_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_SHARED_FILES: /* Shared Files: <Directory> <File info list> */
|
|
offset = dissect_edonkey_directory(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_file_info_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_HASHSET_ANSWER: /* Hashset Answer: <Hash List> */
|
|
offset = dissect_edonkey_hash_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(tree, tvb, offset, length, "Message Data (%d bytes)", length);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void dissect_emule_tcp_message(guint8 msg_type,
|
|
tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, int length, proto_tree *tree)
|
|
{
|
|
int msg_start, msg_end, bytes_remaining;
|
|
guint32 packed_length;
|
|
guint16 version, rank, partnum;
|
|
|
|
if (tree == NULL) return;
|
|
|
|
bytes_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
if ((length < 0) || (length > bytes_remaining)) length = bytes_remaining;
|
|
if (length <= 0) return;
|
|
|
|
msg_start = offset;
|
|
msg_end = offset + length;
|
|
|
|
switch (msg_type) {
|
|
case EMULE_MSG_HELLO: /* eMule Hello: <eMule Version> <Meta tag list> */
|
|
case EMULE_MSG_HELLO_ANSWER: /* eMule Hello Answer: <eMule Version> <Meta tag list> */
|
|
version = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 2, "Version: %u", version);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset+2, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_QUEUE_RANKING: /* eMule Queue Ranking: <eMule Rank (guint16)> */
|
|
rank = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 2, "Queue Ranking: %u", rank);
|
|
break;
|
|
|
|
case EMULE_MSG_SOURCES_REQUEST: /* Sources Request: <File Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_SOURCES_ANSWER: /* Sources Answer: <File Hash> <Address List> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_emule_address_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_DATA_COMPRESSED: /* Data Compressed: <File Hash> <Start Offset> <Length (guint32)> <DATA> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset(tvb, pinfo, offset, tree);
|
|
packed_length = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Packed Length: %u", packed_length);
|
|
offset += 4;
|
|
if (msg_end > offset) {
|
|
bytes_remaining = msg_end - offset;
|
|
proto_tree_add_text(tree, tvb, offset, bytes_remaining,
|
|
"Compressed Message Data (%d bytes)", bytes_remaining);
|
|
}
|
|
break;
|
|
|
|
case EMULE_MSG_DATA_COMPRESSED_64: /* Data Compressed: <File Hash> <Start Offset (guint64)> <Length (guint32)> <DATA> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset_64(tvb, pinfo, offset, tree);
|
|
packed_length = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Packed Length: %u", packed_length);
|
|
offset += 4;
|
|
if (msg_end > offset) {
|
|
bytes_remaining = msg_end - offset;
|
|
proto_tree_add_text(tree, tvb, offset, bytes_remaining,
|
|
"Compressed Message Data (%d bytes)", bytes_remaining);
|
|
}
|
|
break;
|
|
|
|
case EMULE_MSG_REQUEST_PARTS_64: /* Request Parts: <File hash> <Start offset>(3) <End offset>(3) */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset_64(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_SENDING_PART_64: /* Sending Part: <File hash> <Start offset> <End offset> DATA */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_start_offset_64(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_end_offset_64(tvb, pinfo, offset, tree);
|
|
if (msg_end > offset) {
|
|
bytes_remaining = msg_end - offset;
|
|
proto_tree_add_text(tree, tvb, offset, bytes_remaining, "Message Data (%d bytes)", bytes_remaining);
|
|
}
|
|
break;
|
|
|
|
case EMULE_MSG_AICH_REQUEST: /* AICH Request: <File Hash> <PartNum> <AICH Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
partnum = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_emule_aich_partnum, tvb, offset, 2, partnum);
|
|
offset += 2;
|
|
offset = dissect_emule_aich_root_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_AICH_ANSWER: /* AICH Answer: <File Hash> <PartNum> <AICH Hash> <AICH Hash List> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
partnum = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_uint(tree, hf_emule_aich_partnum, tvb, offset, 2, partnum);
|
|
offset += 2;
|
|
offset = dissect_emule_aich_root_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_emule_aich_hash_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_MULTIPACKET: /* MultiPacket: <Hash> <Opcodes> */
|
|
case EMULE_MSG_MULTIPACKET_ANSWER:
|
|
case EMULE_MSG_MULTIPACKET_EXT: /* MultiPacketExt: <Hash> <FileLength> <Opcodes> */
|
|
offset = dissect_emule_multipacket(tvb, pinfo, offset, offset+length, tree, msg_type==EMULE_MSG_MULTIPACKET_EXT);
|
|
break;
|
|
|
|
default:
|
|
dissect_edonkey_tcp_message(msg_type, tvb, pinfo, offset, length, tree);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void dissect_edonkey_udp_message(guint8 msg_type,
|
|
tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, int length, proto_tree *tree)
|
|
{
|
|
int msg_start, msg_end, bytes_remaining;
|
|
guint8 type;
|
|
guint16 min, max;
|
|
guint16 ischal;
|
|
guint32 chal;
|
|
guint32 nusers, nfiles;
|
|
|
|
if (tree == NULL) return;
|
|
|
|
bytes_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
if ((length < 0) || (length > bytes_remaining)) length = bytes_remaining;
|
|
if (length <= 0) return;
|
|
|
|
msg_start = offset;
|
|
msg_end = offset + length;
|
|
|
|
switch (msg_type) {
|
|
/* EDonkey UDP Messages */
|
|
case EDONKEY_MSG_UDP_CALLBACK_REQUEST: /* Callback Request: <Address> <Client ID> */
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_CALLBACK_FAIL: /* Callback Fail: <Client ID> */
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_GET_SERVER_INFO: /* Get Server Info: <Challenge> */
|
|
if (length>=2) {
|
|
ischal = tvb_get_letohs(tvb, offset);
|
|
if (ischal==0xf0ff) {
|
|
chal = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Challenge: 0x%08x", chal);
|
|
offset += 4;
|
|
} else {
|
|
offset = dissect_edonkey_string(tvb, pinfo, offset, tree);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SERVER_INFO: /* Server Info: <String> <String>*/
|
|
ischal = tvb_get_letohs(tvb, offset);
|
|
if (ischal==0xf0ff) {
|
|
chal = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Challenge: 0x%08x", chal);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset+4, tree);
|
|
} else {
|
|
offset = dissect_edonkey_string(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_string(tvb, pinfo, offset, tree);
|
|
}
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SERVER_LIST: /* Server List: <Address List> */
|
|
offset = dissect_edonkey_address_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SEARCH_FILE_RESULTS: /* Search File Result: <File Info> */
|
|
offset = dissect_edonkey_file_info(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SEARCH_FILE: /* Search File: <Search query> */
|
|
offset = dissect_edonkey_search_query(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_GET_SOURCES: /* Get Sources: <File Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_FOUND_SOURCES: /* Found Sources: <File Hash> <Address List> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_address_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SERVER_STATUS_REQUEST: /* Server Status Request: <guint32> */
|
|
chal = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Challenge: 0x%08x", chal);
|
|
offset += 4;
|
|
break;
|
|
|
|
case EDONKEY_MSG_UDP_SERVER_STATUS: /* Server Status: <guint32> <Nusers> <Nfiles> <Nusersmax> */
|
|
chal = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Challenge: 0x%08x", chal);
|
|
offset += 4;
|
|
nusers = tvb_get_letohl(tvb, offset);
|
|
nfiles = tvb_get_letohl(tvb, offset+4);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Number of Users: %u", nusers);
|
|
proto_tree_add_text(tree, tvb, offset+4, 4, "Number of Files: %u", nfiles);
|
|
offset += 8;
|
|
if (offset < msg_end) {
|
|
nusers = tvb_get_letohl(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 4, "Max number of Users: %u", nusers);
|
|
offset += 4;
|
|
}
|
|
break;
|
|
|
|
/* Overnet UDP Messages */
|
|
case OVERNET_MSG_UDP_CONNECT: /* Connect: <Peer (sender) > */
|
|
case OVERNET_MSG_UDP_PUBLICIZE: /* Publicize: <Peer (sender) > */
|
|
offset = dissect_overnet_peer(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_CONNECT_REPLY: /* Connect Reply: <guint16 Peer List> */
|
|
offset = dissect_edonkey_list(tvb, pinfo, offset, tree, 2, "Overnet Peer", dissect_overnet_peer);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_SEARCH: /* Search: <search type (guint8)> <Hash> */
|
|
type = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Search Type: %u", type);
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset+1, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_SEARCH_INFO:
|
|
/* Search Info: <Hash> <search type (guint8)> <min (guint16)> <max (guint16)>*/
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
type = tvb_get_guint8(tvb, offset);
|
|
min = tvb_get_letohs(tvb, offset+1);
|
|
max = tvb_get_letohs(tvb, offset+3);
|
|
proto_tree_add_text(tree, tvb, offset, 1, "Search Type: %u", type);
|
|
proto_tree_add_text(tree, tvb, offset+1, 4, "Search Range: Min=%u Max=%u", min, max);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_SEARCH_NEXT: /* Search Next: <Hash> <guint8 Peer List> */
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_list(tvb, pinfo, offset, tree, 1, "Overnet Peer", dissect_overnet_peer);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_SEARCH_RESULT: /* Search Result: <Hash> <Hash> <Meta tag List> */
|
|
case OVERNET_MSG_UDP_PUBLISH: /* Publish: <Hash> <Hash> <Meta tag List> */
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_metatag_list(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_SEARCH_END: /* Search End: <Hash> */
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_PUBLISH_ACK: /* Publish ACK: <File Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_IP_QUERY: /* IP Query: <TCP Port> */
|
|
proto_tree_add_item(tree, hf_edonkey_port, tvb, offset, 2, TRUE);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_IP_QUERY_ANSWER: /* IP Query Answer: <IP> */
|
|
offset = dissect_edonkey_client_id(tvb, pinfo, offset, tree, FALSE);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_IDENTIFY_REPLY: /* Identify Reply: <Contact (sender)> */
|
|
/* <Contact> ::= <Hash> <Address> */
|
|
offset = dissect_edonkey_hash(tvb, pinfo, offset, tree);
|
|
offset = dissect_edonkey_address(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_IDENTIFY_ACK: /* Identify Reply: <TCP Port (sender)> */
|
|
proto_tree_add_item(tree, hf_edonkey_port, tvb, offset, 2, TRUE);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_FIREWALL_CONNECTION: /* Firewall Connnection Ack: <Hash> <TCP Port> */
|
|
offset = dissect_edonkey_client_hash(tvb, pinfo, offset, tree);
|
|
proto_tree_add_item(tree, hf_edonkey_port, tvb, offset, 2, TRUE);
|
|
break;
|
|
|
|
case OVERNET_MSG_UDP_FIREWALL_CONNECTION_ACK: /* Firewall Connnection Ack: <Hash> */
|
|
case OVERNET_MSG_UDP_FIREWALL_CONNECTION_NACK: /* Firewall Connnection NAck: <Hash> */
|
|
offset = dissect_edonkey_client_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(tree, tvb, offset, length, "Message Data (%d bytes)", length);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void dissect_emule_udp_message(guint8 msg_type,
|
|
tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
int offset, int length, proto_tree *tree)
|
|
{
|
|
int msg_start, msg_end, bytes_remaining;
|
|
guint16 rank;
|
|
|
|
bytes_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
if ((length < 0) || (length > bytes_remaining)) length = bytes_remaining;
|
|
if (length <= 0) return;
|
|
|
|
msg_start = offset;
|
|
msg_end = offset + length;
|
|
|
|
switch (msg_type) {
|
|
case EMULE_MSG_UDP_REASKFILEPING: /* Reask File Ping: <File Hash> */
|
|
offset = dissect_edonkey_file_hash(tvb, pinfo, offset, tree);
|
|
break;
|
|
|
|
case EMULE_MSG_UDP_REASKACK: /* Reask ACK: <eMule Rank> */
|
|
rank = tvb_get_letohs(tvb, offset);
|
|
proto_tree_add_text(tree, tvb, offset, 2, "Queue Ranking: %u", rank);
|
|
break;
|
|
|
|
default:
|
|
dissect_edonkey_udp_message(msg_type, tvb, pinfo, offset, length,tree);
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
static guint get_edonkey_tcp_pdu_len(tvbuff_t *tvb, int offset)
|
|
{
|
|
guint32 msg_len;
|
|
|
|
/*
|
|
* Get the length of the eDonkey packet.
|
|
*/
|
|
msg_len = tvb_get_letohl(tvb, offset+1);
|
|
|
|
/*
|
|
* That length doesn't include the header; add that in.
|
|
* XXX - what if it overflows?
|
|
*/
|
|
return msg_len + EDONKEY_TCP_HEADER_LENGTH;
|
|
}
|
|
|
|
static void dissect_edonkey_tcp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *edonkey_tree = NULL, *edonkey_msg_tree = NULL, *emule_zlib_tree = NULL;
|
|
int offset, bytes, messages;
|
|
guint8 protocol, msg_type;
|
|
guint32 msg_len;
|
|
const gchar *protocol_name, *message_name;
|
|
void (*dissector)(guint8, tvbuff_t*, packet_info*, int, int, proto_tree*);
|
|
tvbuff_t *tvbraw = NULL;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "eDonkey");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_edonkey, tvb, 0, -1, FALSE);
|
|
edonkey_tree = proto_item_add_subtree(ti, ett_edonkey);
|
|
}
|
|
|
|
offset = 0;
|
|
messages = 0;
|
|
protocol = tvb_get_guint8(tvb, offset);
|
|
msg_len = tvb_get_letohl(tvb, offset+1);
|
|
|
|
protocol_name = match_strval(protocol, edonkey_protocols);
|
|
if (protocol_name == NULL) {
|
|
/* Not a recognized eDonkey protocol - probably a continuation */
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO, "eDonkey Continuation");
|
|
if (edonkey_tree) {
|
|
bytes = tvb_length_remaining(tvb, offset);
|
|
proto_tree_add_text(edonkey_tree, tvb, 0, -1, "Continuation data (%d bytes)", bytes);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Add edonkey message tree */
|
|
if (edonkey_tree) {
|
|
ti = proto_tree_add_item(edonkey_tree, hf_edonkey_message, tvb,
|
|
offset, EDONKEY_TCP_HEADER_LENGTH + msg_len, FALSE);
|
|
edonkey_msg_tree = proto_item_add_subtree(ti, ett_edonkey_message);
|
|
|
|
proto_tree_add_uint_format(edonkey_msg_tree, hf_edonkey_protocol, tvb, offset, 1, protocol,
|
|
"Protocol: %s (0x%02x)", protocol_name, protocol);
|
|
proto_tree_add_uint(edonkey_msg_tree, hf_edonkey_message_length, tvb, offset+1, 4, msg_len);
|
|
}
|
|
|
|
|
|
/* Skip past the EDONKEY Header */
|
|
offset += EDONKEY_TCP_HEADER_LENGTH;
|
|
|
|
if(tvb_reported_length_remaining(tvb, offset) <= 0) {
|
|
/* There is not enough space for the msg_type - mark as fragment */
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s TCP Message Fragment", protocol_name);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s TCP", protocol_name);
|
|
}
|
|
|
|
msg_type = tvb_get_guint8(tvb, offset);
|
|
switch (protocol) {
|
|
case EDONKEY_PROTO_EDONKEY:
|
|
message_name = val_to_str(msg_type, edonkey_tcp_msgs, "Unknown");
|
|
dissector = dissect_edonkey_tcp_message;
|
|
break;
|
|
|
|
case EDONKEY_PROTO_EMULE_EXT:
|
|
message_name = val_to_str(msg_type, emule_tcp_msgs,
|
|
val_to_str(msg_type, edonkey_tcp_msgs, "Unknown"));
|
|
dissector = dissect_emule_tcp_message;
|
|
break;
|
|
|
|
case EDONKEY_PROTO_EMULE_COMP:
|
|
/*
|
|
* These ought to be exactly the same as standard eDonkey (0xe5) messages,
|
|
* except that the payload (after the type byte) is a zlib compressed
|
|
* stream.
|
|
*/
|
|
message_name = val_to_str(msg_type, edonkey_tcp_msgs, "Unknown");
|
|
tvbraw = tvb_uncompress(tvb, offset+1, msg_len-1);
|
|
if (tvbraw) {
|
|
dissector = dissect_edonkey_tcp_message;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
message_name = "Unknown";
|
|
dissector = NULL;
|
|
break;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ": %s", message_name);
|
|
}
|
|
|
|
|
|
if (edonkey_msg_tree) {
|
|
proto_tree_add_uint_format(edonkey_msg_tree, hf_edonkey_message_type, tvb, offset, 1, msg_type,
|
|
"Message Type: %s (0x%02x)", message_name, msg_type);
|
|
if (dissector && (msg_len > 1)) {
|
|
if (!tvbraw) {
|
|
(*dissector)(msg_type, tvb, pinfo, offset+1, msg_len-1, edonkey_msg_tree);
|
|
} else {
|
|
ti = proto_tree_add_item(edonkey_msg_tree, hf_emule_zlib, tvb,
|
|
offset+1, msg_len-1, FALSE);
|
|
emule_zlib_tree = proto_item_add_subtree(ti, ett_emule_zlib);
|
|
tvb_set_child_real_data_tvbuff(tvb, tvbraw);
|
|
add_new_data_source(pinfo, tvbraw, "Decompressed Data");
|
|
(*dissector)(msg_type, tvbraw, pinfo, 0, tvb_length(tvbraw), emule_zlib_tree);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dissect_edonkey_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
tcp_dissect_pdus(tvb, pinfo, tree, edonkey_desegment,
|
|
EDONKEY_TCP_HEADER_LENGTH, get_edonkey_tcp_pdu_len,
|
|
dissect_edonkey_tcp_pdu);
|
|
}
|
|
|
|
static void dissect_edonkey_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *edonkey_tree = NULL, *edonkey_msg_tree = NULL;
|
|
int offset;
|
|
guint8 protocol, msg_type;
|
|
const gchar *protocol_name, *message_name;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "eDonkey");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO, "eDonkey UDP Message");
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, proto_edonkey, tvb, 0, -1, FALSE);
|
|
edonkey_tree = proto_item_add_subtree(ti, ett_edonkey);
|
|
}
|
|
|
|
offset = 0;
|
|
/* eDonkey UDP message - Assume that there is one message per packet */
|
|
if (tvb_length_remaining(tvb, offset) >= EDONKEY_UDP_HEADER_LENGTH) {
|
|
protocol = tvb_get_guint8(tvb, offset);
|
|
msg_type = tvb_get_guint8(tvb, offset+1);
|
|
protocol_name = val_to_str(protocol, edonkey_protocols, "Unknown");
|
|
message_name = val_to_str(msg_type, edonkey_udp_msgs, "Unknown");
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s UDP: %s", protocol_name, message_name);
|
|
}
|
|
|
|
if (edonkey_tree) {
|
|
ti = proto_tree_add_item(edonkey_tree, hf_edonkey_message, tvb, offset, -1, FALSE);
|
|
edonkey_msg_tree = proto_item_add_subtree(ti, ett_edonkey_message);
|
|
|
|
proto_tree_add_uint_format(edonkey_msg_tree, hf_edonkey_protocol, tvb, offset, 1, protocol,
|
|
"Protocol: %s (0x%02x)", protocol_name, protocol);
|
|
proto_tree_add_uint_format(edonkey_msg_tree, hf_edonkey_message_type, tvb, offset+1, 1, msg_type,
|
|
"Message Type: %s (0x%02x)", message_name, msg_type);
|
|
|
|
offset += EDONKEY_UDP_HEADER_LENGTH;
|
|
|
|
switch (protocol) {
|
|
case EDONKEY_PROTO_EDONKEY:
|
|
dissect_edonkey_udp_message(msg_type, tvb, pinfo, offset, -1, edonkey_msg_tree);
|
|
break;
|
|
|
|
case EDONKEY_PROTO_EMULE_EXT:
|
|
dissect_emule_udp_message(msg_type, tvb, pinfo, offset, -1, edonkey_msg_tree);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void proto_register_edonkey(void) {
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_edonkey_message,
|
|
{ "eDonkey Message", "edonkey.message",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey Message", HFILL } },
|
|
{ &hf_edonkey_protocol,
|
|
{ "Protocol", "edonkey.protocol",
|
|
FT_UINT8, BASE_HEX, VALS(edonkey_protocols), 0, "eDonkey Protocol", HFILL } },
|
|
{ &hf_edonkey_message_length,
|
|
{ "Message Length", "edonkey.message.length",
|
|
FT_UINT32, BASE_DEC, NULL, 0, "eDonkey Message Length", HFILL } },
|
|
{ &hf_edonkey_message_type,
|
|
{ "Message Type", "edonkey.message.type",
|
|
FT_UINT8, BASE_HEX, NULL, 0, "eDonkey Message Type", HFILL } },
|
|
{ &hf_edonkey_client_hash,
|
|
{ "Client Hash", "edonkey.client_hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eDonkey Client Hash", HFILL } },
|
|
{ &hf_edonkey_server_hash,
|
|
{ "Server Hash", "edonkey.server_hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eDonkey Server Hash", HFILL } },
|
|
{ &hf_edonkey_file_hash,
|
|
{ "File Hash", "edonkey.file_hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eDonkey File Hash", HFILL } },
|
|
{ &hf_edonkey_client_id,
|
|
{ "Client ID", "edonkey.clientid",
|
|
FT_IPv4, BASE_DEC, NULL, 0, "eDonkey Client ID", HFILL } },
|
|
{ &hf_edonkey_ip,
|
|
{ "IP", "edonkey.ip",
|
|
FT_IPv4, BASE_DEC, NULL, 0, "eDonkey IP", HFILL } },
|
|
{ &hf_edonkey_port,
|
|
{ "Port", "edonkey.port",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eDonkey Port", HFILL } },
|
|
{ &hf_edonkey_metatag,
|
|
{ "eDonkey Meta Tag", "edonkey.metatag",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey Meta Tag", HFILL } },
|
|
{ &hf_edonkey_metatag_type,
|
|
{ "Meta Tag Type", "edonkey.metatag.type",
|
|
FT_UINT8, BASE_HEX, NULL, 0, "eDonkey Meta Tag Type", HFILL } },
|
|
{ &hf_edonkey_metatag_id,
|
|
{ "Meta Tag ID", "edonkey.metatag.id",
|
|
FT_UINT8, BASE_HEX, NULL, 0, "eDonkey Meta Tag ID", HFILL } },
|
|
{ &hf_edonkey_metatag_name,
|
|
{ "Meta Tag Name", "edonkey.metatag.name",
|
|
FT_STRING, BASE_NONE, NULL, 0, "eDonkey Meta Tag Name", HFILL } },
|
|
{ &hf_edonkey_metatag_namesize,
|
|
{ "Meta Tag Name Size", "edonkey.metatag.namesize",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eDonkey Meta Tag Name Size", HFILL } },
|
|
{ &hf_edonkey_search,
|
|
{ "eDonkey Search", "edonkey.search",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey Search", HFILL } },
|
|
{ &hf_edonkey_hash,
|
|
{ "Hash", "edonkey.hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eDonkey Hash", HFILL } },
|
|
{ &hf_edonkey_string,
|
|
{ "String", "edonkey.string",
|
|
FT_STRING, BASE_NONE, NULL, 0, "eDonkey String", HFILL } },
|
|
{ &hf_edonkey_string_length,
|
|
{ "String Length", "edonkey.string_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eDonkey String Length", HFILL } },
|
|
{ &hf_edonkey_part_count,
|
|
{ "Part Count", "edonkey.part_count",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eDonkey Part Count", HFILL } },
|
|
{ &hf_edonkey_file_status,
|
|
{ "File Status", "edonkey.file_status",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eDonkey File Status", HFILL } },
|
|
{ &hf_edonkey_directory,
|
|
{ "Directory", "edonkey.directory",
|
|
FT_STRING, BASE_NONE, NULL, 0, "eDonkey Directory", HFILL } },
|
|
{ &hf_edonkey_fileinfo,
|
|
{ "eDonkey File Info", "edonkey.fileinfo",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey File Info", HFILL } },
|
|
{ &hf_edonkey_serverinfo,
|
|
{ "eDonkey Server Info", "edonkey.serverinfo",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey Server Info", HFILL } },
|
|
{ &hf_edonkey_clientinfo,
|
|
{ "eDonkey Client Info", "edonkey.clientinfo",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eDonkey Client Info", HFILL } },
|
|
{ &hf_emule_aich_partnum,
|
|
{ "Part Number", "emule.aich_partnum",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eMule AICH Part Number", HFILL } },
|
|
{ &hf_emule_aich_root_hash,
|
|
{ "AICH Root Hash", "emule.aich_root_hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eMule AICH Root Hash", HFILL } },
|
|
{ &hf_emule_aich_hash_entry,
|
|
{ "AICH Hash Entry", "emule_aich_hash_entry",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eMule AICH Hash Entry", HFILL } },
|
|
{ &hf_emule_aich_hash_id,
|
|
{ "AICH Hash ID", "emule.aich_hash_id",
|
|
FT_UINT16, BASE_HEX, NULL, 0, "eMule AICH Hash ID", HFILL } },
|
|
{ &hf_emule_aich_hash,
|
|
{ "AICH Hash", "emule.aich_hash",
|
|
FT_BYTES, BASE_HEX, NULL, 0, "eMule AICH Hash", HFILL } },
|
|
{ &hf_emule_multipacket_entry,
|
|
{ "eMule MultiPacket Entry", "emule.multipacket_entry",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eMule MultiPacket Entry", HFILL } },
|
|
{ &hf_emule_multipacket_opcode,
|
|
{ "MultiPacket Opcode", "emule.multipacket_opcode",
|
|
FT_UINT8, BASE_HEX, NULL, 0, "eMule MultiPacket Opcode", HFILL } },
|
|
{ &hf_emule_source_count,
|
|
{ "Compeleted Sources Count", "emule.source_count",
|
|
FT_UINT16, BASE_DEC, NULL, 0, "eMule Completed Sources Count", HFILL } },
|
|
{ &hf_emule_zlib,
|
|
{ "Compressed Data", "emule.zlib",
|
|
FT_NONE, BASE_NONE, NULL, 0, "eMule Compressed Data", HFILL } },
|
|
{ &hf_overnet_peer,
|
|
{ "Overnet Peer", "overnet.peer",
|
|
FT_NONE, BASE_NONE, NULL, 0, "Overnet Peer", HFILL } },
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_edonkey,
|
|
&ett_edonkey_message,
|
|
&ett_edonkey_metatag,
|
|
&ett_edonkey_search,
|
|
&ett_edonkey_fileinfo,
|
|
&ett_edonkey_serverinfo,
|
|
&ett_edonkey_clientinfo,
|
|
&ett_emule_aichhash,
|
|
&ett_emule_multipacket,
|
|
&ett_emule_zlib,
|
|
&ett_overnet_peer
|
|
};
|
|
module_t *edonkey_module;
|
|
|
|
proto_edonkey = proto_register_protocol("eDonkey Protocol", "EDONKEY", "edonkey");
|
|
|
|
proto_register_field_array(proto_edonkey, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
register_dissector("edonkey.tcp", dissect_edonkey_tcp, proto_edonkey);
|
|
register_dissector("edonkey.udp", dissect_edonkey_udp, proto_edonkey);
|
|
|
|
edonkey_module = prefs_register_protocol(proto_edonkey, NULL);
|
|
prefs_register_bool_preference(edonkey_module, "desegment",
|
|
"Reassemble eDonkey messages spanning multiple TCP segments",
|
|
"Whether the eDonkey dissector should reassemble messages spanning multiple TCP segments."
|
|
" To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
|
|
&edonkey_desegment);
|
|
}
|
|
|
|
void proto_reg_handoff_edonkey(void) {
|
|
dissector_handle_t edonkey_tcp_handle;
|
|
dissector_handle_t edonkey_udp_handle;
|
|
|
|
edonkey_tcp_handle = find_dissector("edonkey.tcp");
|
|
edonkey_udp_handle = find_dissector("edonkey.udp");
|
|
|
|
dissector_add("tcp.port", 4661, edonkey_tcp_handle);
|
|
dissector_add("tcp.port", 4662, edonkey_tcp_handle);
|
|
dissector_add("tcp.port", 4663, edonkey_tcp_handle);
|
|
dissector_add("udp.port", 4665, edonkey_udp_handle);
|
|
dissector_add("udp.port", 4672, edonkey_udp_handle);
|
|
}
|