90 lines
2.7 KiB
C++
90 lines
2.7 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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static inline bool match_wolf_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 (!MATCHSTR(payload, "\xff\xff\xff\xff"))
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return false;
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return true;
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}
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static inline bool match_wolf_et(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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/* Limit to port 27960 for now */
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if (data->server_port != 27960 && data->client_port != 27960)
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return false;
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if (!match_wolf_payload(data->payload[0], data->payload_len[0]))
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return false;
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if (!match_wolf_payload(data->payload[1], data->payload_len[1]))
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return false;
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/* getinfo packet is always 15 bytes, the other is always 250-350 */
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if (data->payload_len[0] == 15) {
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if (data->payload_len[1] == 0 || (data->payload_len[1] >= 250
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&& data->payload_len[1] < 350))
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return true;
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}
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if (data->payload_len[1] == 15) {
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if (data->payload_len[0] == 0 || (data->payload_len[0] >= 250
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&& data->payload_len[0] < 350))
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return true;
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}
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/* getservers packets are 17 bytes, response may vary a lot (?) */
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if (data->payload_len[0] == 17)
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return true;
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if (data->payload_len[1] == 17)
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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_wolfet = {
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LPI_PROTO_UDP_WOLF_ET,
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LPI_CATEGORY_GAMING,
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"WolfensteinEnemyTerritory",
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50, /* Must be lower priority than Call of Duty */
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match_wolf_et
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};
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void register_wolfet(LPIModuleMap *mod_map) {
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register_protocol(&lpi_wolfet, mod_map);
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}
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