100 lines
2.4 KiB
C++
100 lines
2.4 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"
|
||
|
|
|
||
|
|
static inline bool match_gtalk(lpi_data_t *data) {
|
||
|
|
|
||
|
|
/* This rule matches the encrypted traffic sent to google talk
|
||
|
|
* clients */
|
||
|
|
|
||
|
|
if (!match_ssl(data))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
/* Port 5228 is used for this */
|
||
|
|
if (data->server_port != 5228 && data->client_port != 5228)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
/* Try and avoid false positives using payload size checks */
|
||
|
|
|
||
|
|
if (data->payload_len[0] == 80 ||
|
||
|
|
data->payload_len[0] == 120 ||
|
||
|
|
data->payload_len[0] == 118 ||
|
||
|
|
data->payload_len[0] == 184)
|
||
|
|
return true;
|
||
|
|
|
||
|
|
if (data->payload_len[1] == 80 ||
|
||
|
|
data->payload_len[1] == 120 ||
|
||
|
|
data->payload_len[1] == 118 ||
|
||
|
|
data->payload_len[1] == 184)
|
||
|
|
return true;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool match_facebook_chat(lpi_data_t *data) {
|
||
|
|
|
||
|
|
/* This rule matches the encrypted traffic sent to facebook chat
|
||
|
|
* clients */
|
||
|
|
|
||
|
|
if (!match_ssl(data))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
/* Port 5228 is used for this */
|
||
|
|
if (data->server_port != 8883 && data->client_port != 8883)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool match_xmpps(lpi_data_t *data, lpi_module_t *mod UNUSED) {
|
||
|
|
|
||
|
|
if (match_gtalk(data))
|
||
|
|
return true;
|
||
|
|
if (match_facebook_chat(data))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static lpi_module_t lpi_xmpps = {
|
||
|
|
LPI_PROTO_XMPPS,
|
||
|
|
LPI_CATEGORY_CHAT,
|
||
|
|
"XMPPS",
|
||
|
|
10,
|
||
|
|
match_xmpps
|
||
|
|
};
|
||
|
|
|
||
|
|
void register_xmpps(LPIModuleMap *mod_map) {
|
||
|
|
register_protocol(&lpi_xmpps, mod_map);
|
||
|
|
}
|
||
|
|
|