108 lines
2.7 KiB
C++
108 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 check_length(uint32_t payload, uint32_t len) {
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uint32_t swap;
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uint32_t length;
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if (!(MATCH(payload, ANY, ANY, 0x02, ANY) ||
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MATCH(payload, ANY, ANY, 0x2d, ANY)))
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return false;
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swap=ntohl(payload);
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length = swap >> 16;
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if (length != len)
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return false;
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return true;
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}
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static inline bool match_qq_8080(uint32_t payload, uint32_t len) {
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if (len == 0)
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return false;
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if (ntohl(payload) == len)
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return true;
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return false;
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}
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static inline bool match_qq_tcp(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (data->server_port == 8080 || data->client_port == 8080) {
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/* Typically traffic to msfwifi.3g.qq.com, only seen on
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* mobile QQ clients.
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*/
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if (match_qq_8080(data->payload[0], data->payload_len[0])) {
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if (match_qq_8080(data->payload[1], data->payload_len[1]))
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return true;
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}
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}
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if (data->payload_len[0] == 0 || data->payload_len[1] == 0)
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return false;
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if ((data->payload[0] & 0xffff0000) != (data->payload[1] & 0xffff0000))
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return false;
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if ((data->payload[0] & 0xffff0000) == 0x00000000)
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return false;
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//if ((data->payload[1] & 0xffff0000) == 0x00000000)
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// return false;
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if (!check_length(data->payload[0], data->payload_len[0]))
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return false;
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if (!check_length(data->payload[1], data->payload_len[1]))
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return false;
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return true;
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}
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static lpi_module_t lpi_qq_tcp = {
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LPI_PROTO_QQ,
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LPI_CATEGORY_CHAT,
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"QQ",
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20,
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match_qq_tcp
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};
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void register_qq_tcp(LPIModuleMap *mod_map) {
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register_protocol(&lpi_qq_tcp, mod_map);
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}
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