104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
/*
|
|
*
|
|
* Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
|
|
* All rights reserved.
|
|
*
|
|
* This file is part of libprotoident.
|
|
*
|
|
* This code has been developed by the University of Waikato WAND
|
|
* research group. For further information please see http://www.wand.net.nz/
|
|
*
|
|
* libprotoident is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* libprotoident is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "libprotoident.h"
|
|
#include "proto_manager.h"
|
|
#include "proto_common.h"
|
|
|
|
/* Pretty sure this is Counterstrike: Global Offensive (saw references to the
|
|
* map 'mg_de_dust' in other flows between the same endpoints).
|
|
*/
|
|
|
|
static inline bool match_ff_csgo(lpi_data_t *data) {
|
|
|
|
if (!match_str_both(data, "\xff\xff\xff\xff", "\xff\xff\xff\xff"))
|
|
return false;
|
|
|
|
if (data->payload_len[0] == 33 && data->payload_len[1] == 18)
|
|
return true;
|
|
if (data->payload_len[1] == 33 && data->payload_len[0] == 18)
|
|
return true;
|
|
|
|
if (data->payload_len[0] == 23 && data->payload_len[1] >= 61 &&
|
|
data->payload_len[1] <= 66)
|
|
return true;
|
|
if (data->payload_len[1] == 23 && data->payload_len[0] >= 61 &&
|
|
data->payload_len[0] <= 66)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static inline bool match_sdping(uint32_t payload) {
|
|
if (MATCH(payload, 0x01, 0x00, 's', 'd'))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool match_sdpong(uint32_t payload) {
|
|
if (MATCH(payload, 0x02, 0x12, 'T', 'l'))
|
|
return true;
|
|
if (MATCH(payload, 0x02, 0x12, 'T', 'd'))
|
|
return true;
|
|
if (MATCH(payload, 0x02, 0x12, 'X', 'd'))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool match_csgo(lpi_data_t *data, lpi_module_t *mod UNUSED) {
|
|
|
|
if (match_ff_csgo(data)) {
|
|
return true;
|
|
}
|
|
|
|
if (match_sdping(data->payload[0])) {
|
|
if (match_sdpong(data->payload[1]))
|
|
return true;
|
|
}
|
|
|
|
if (match_sdping(data->payload[1])) {
|
|
if (match_sdpong(data->payload[0]))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static lpi_module_t lpi_csgo = {
|
|
LPI_PROTO_UDP_CS_GLOBAL_OFFENSIVE,
|
|
LPI_CATEGORY_GAMING,
|
|
"CSGlobalOffensive",
|
|
18,
|
|
match_csgo
|
|
};
|
|
|
|
void register_csgo(LPIModuleMap *mod_map) {
|
|
register_protocol(&lpi_csgo, mod_map);
|
|
}
|
|
|