148 lines
3.7 KiB
C++
148 lines
3.7 KiB
C++
/*
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*
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* Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
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* All rights reserved.
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*
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* This file is part of libprotoident.
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*
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* This code has been developed by the University of Waikato WAND
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* research group. For further information please see http://www.wand.net.nz/
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*
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* libprotoident is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* libprotoident 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#include <string.h>
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#include "libprotoident.h"
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#include "proto_manager.h"
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#include "proto_common.h"
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#include <stdio.h>
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/* Funshion is a Chinese P2PTV application that seems to use a bunch
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* of different protocols / messages.
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*/
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static inline bool match_funshion_25(uint32_t payload, uint32_t len) {
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/* One-way flows are also common, but we'd need a stronger set
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* of rules before I'd feel comfortable allowing this.
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*/
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if (len != 25)
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return false;
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/* The payload here is almost definitely a timestamp, but it only
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* bears an approximate resemblance to the timestamp of the packet
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* itself.
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* Sometimes it is up to a day in excess of the current timestamp,
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* sometimes it is several hours behind.
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*
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* Not much chance of doing any useful matches on the payload.
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*/
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return true;
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}
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static inline bool match_funshion_104(uint32_t payload, uint32_t len) {
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/* The payload for these packets is all zeroes, so be careful
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* regarding false positives, e.g. XboxLive traffic.
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*/
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if (len == 0)
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return true;
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if (len != 104)
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return false;
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if (MATCH(payload, 0x00, 0x00, 0x00, 0x00))
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return true;
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return false;
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}
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static inline bool match_funshion_dt(uint32_t payload, uint32_t otherlen) {
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if (otherlen != 0)
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return false;
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/* The 'command' begins with byte 4, so I'm going to try
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* and match all known commands rather than just allowing
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* anything in byte 4.
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*
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* We might miss a few rare commands but should get the
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* common ones.
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*/
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/* init, inline_page */
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if (MATCH(payload, 'd', 't', '=', 'i'))
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return true;
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/* dtfsp, dtjs */
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if (MATCH(payload, 'd', 't', '=', 'd'))
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return true;
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/* play_* */
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if (MATCH(payload, 'd', 't', '=', 'p'))
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return true;
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/* wt_bh */
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if (MATCH(payload, 'd', 't', '=', 'w'))
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return true;
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/* taskflux */
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if (MATCH(payload, 'd', 't', '=', 't'))
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return true;
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/* compress_uncompress */
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if (MATCH(payload, 'd', 't', '=', 'c'))
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return true;
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return false;
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}
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static inline bool match_funshion_udp(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (match_funshion_25(data->payload[0], data->payload_len[0])) {
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if (match_funshion_25(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_funshion_104(data->payload[0], data->payload_len[0])) {
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if (match_funshion_104(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_funshion_dt(data->payload[0], data->payload_len[1]))
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return true;
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if (match_funshion_dt(data->payload[1], data->payload_len[0]))
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return true;
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return false;
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}
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static lpi_module_t lpi_funshion_udp = {
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LPI_PROTO_UDP_FUNSHION,
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LPI_CATEGORY_P2PTV,
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"Funshion_UDP",
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50,
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match_funshion_udp
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};
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void register_funshion_udp(LPIModuleMap *mod_map) {
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register_protocol(&lpi_funshion_udp, mod_map);
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}
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