171 lines
5.2 KiB
C++
171 lines
5.2 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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static inline bool match_cod_payload(uint32_t payload, uint32_t len) {
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if (len == 0)
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return true;
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if (!MATCH(payload, 0xff, 0xff, 0xff, 0xff))
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return false;
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return true;
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}
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static inline bool match_callofduty(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (!match_cod_payload(data->payload[0], data->payload_len[0]))
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return false;
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if (!match_cod_payload(data->payload[1], data->payload_len[1]))
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return false;
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/* One packet is always 14 or 15 bytes, the other is usually much
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* larger */
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if (data->payload_len[0] == 14 || data->payload_len[0] == 15) {
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if (data->payload_len[1] == 0)
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return true;
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if (data->payload_len[1] > 100)
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return true;
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}
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if (data->payload_len[1] == 14 || data->payload_len[1] == 15) {
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if (data->payload_len[0] == 0)
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return true;
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if (data->payload_len[0] > 100)
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return true;
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}
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/* 13 is also observed */
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if (data->payload_len[0] == 13) {
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if (data->payload_len[1] > 880)
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return true;
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if (data->payload_len[1] >= 225 && data->payload_len[1] <= 250)
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return true;
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}
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/* Other packet size combos */
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/* 74 seems to be common on port 20800 which is associated with
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* COD:WaW
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*/
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if (data->payload_len[0] == 74) {
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if (data->payload_len[1] == 0)
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return true;
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}
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if (data->payload_len[1] == 74) {
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if (data->payload_len[0] == 0)
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return true;
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}
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if (data->payload_len[0] == 45) {
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if (data->payload_len[1] == 0)
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return true;
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}
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if (data->payload_len[1] == 45) {
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if (data->payload_len[0] == 0)
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return true;
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}
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if (data->payload_len[0] == 53) {
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if (data->payload_len[1] < 30)
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return false;
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if (data->payload_len[1] > 33)
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return false;
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return true;
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}
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if (data->payload_len[1] == 53) {
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if (data->payload_len[0] < 30)
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return false;
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if (data->payload_len[0] > 33)
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return false;
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return true;
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}
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if (data->payload_len[0] == 16) {
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if (data->payload_len[1] == 18)
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return true;
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if (data->payload_len[1] == 16)
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return true;
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if (data->payload_len[1] == 13)
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return true;
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if (data->payload_len[1] == 0) {
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return true;
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}
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}
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if (data->payload_len[1] == 16) {
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if (data->payload_len[0] == 18)
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return true;
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if (data->payload_len[0] == 16)
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return true;
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if (data->payload_len[0] == 13)
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return true;
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if (data->payload_len[0] == 0) {
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return true;
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}
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}
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if (data->payload_len[0] >= 16 && data->payload_len[0] <= 19) {
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if (data->payload_len[1] < 40)
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return false;
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if (data->payload_len[1] > 44)
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return false;
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return true;
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}
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if (data->payload_len[1] >= 16 && data->payload_len[1] <= 19) {
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if (data->payload_len[0] < 40)
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return false;
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if (data->payload_len[0] > 44)
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return false;
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return true;
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}
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return false;
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}
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static lpi_module_t lpi_callofduty = {
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LPI_PROTO_UDP_COD,
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LPI_CATEGORY_GAMING,
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"Call_of_Duty",
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60, /* Must be lower priority than XLSP */
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match_callofduty
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};
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void register_callofduty(LPIModuleMap *mod_map) {
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register_protocol(&lpi_callofduty, mod_map);
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}
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