139 lines
4.4 KiB
C++
139 lines
4.4 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_quake_ping(lpi_data_t *data) {
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/* The client appears to send a "ping" (which is not part of the
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* documented Quake engine protocol). The server responds with a
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* standard "ffffffff" packet */
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if (MATCHSTR(data->payload[0], "ping") && data->payload_len[0] == 4) {
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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] != 14)
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return false;
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if (MATCHSTR(data->payload[1], "\xff\xff\xff\xff"))
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return true;
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return false;
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}
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if (MATCHSTR(data->payload[1], "ping") && data->payload_len[1] == 4) {
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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] != 14)
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return false;
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if (MATCHSTR(data->payload[0], "\xff\xff\xff\xff"))
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return true;
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return false;
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}
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return false;
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}
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static inline bool match_qlive_challenge(uint32_t payload, uint32_t len) {
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/* Not sure whether this length can vary or not? */
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if (len == 259)
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return true;
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return false;
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}
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static inline bool match_qlive_response(uint32_t payload, uint32_t len) {
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/* Not sure whether this length can vary or not? */
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if (len == 33 || len == 32 || len == 31 || len == 30)
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return true;
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return false;
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}
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static inline bool match_quake(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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/* Trying to match generic Quake engine games - typically use port
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* 27960 */
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if (match_quake_ping(data))
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return true;
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if (!match_str_both(data, "\xff\xff\xff\xff", "\xff\xff\xff\xff"))
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return false;
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if (data->payload_len[0] == 16) {
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if (data->payload_len[1] >= 51 && data->payload_len[1] <= 54)
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return true;
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if (data->payload_len[1] >= 30 && data->payload_len[1] <= 33)
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return true;
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if (data->server_port == 27960 || data->client_port == 27960) {
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if (data->payload_len[1] >= 800 && data->payload_len[1] <= 812)
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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] >= 51 && data->payload_len[0] <= 54)
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return true;
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if (data->payload_len[0] >= 30 && data->payload_len[0] <= 33)
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return true;
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if (data->server_port == 27960 || data->client_port == 27960) {
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if (data->payload_len[0] >= 800 && data->payload_len[0] <= 812)
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return true;
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}
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}
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if (match_qlive_challenge(data->payload[0], data->payload_len[0])) {
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if (match_qlive_response(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_qlive_challenge(data->payload[1], data->payload_len[1])) {
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if (match_qlive_response(data->payload[0], data->payload_len[0]))
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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_quake = {
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LPI_PROTO_UDP_QUAKE,
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LPI_CATEGORY_GAMING,
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"Quake",
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6,
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match_quake
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};
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void register_quake(LPIModuleMap *mod_map) {
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register_protocol(&lpi_quake, mod_map);
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}
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