137 lines
3.9 KiB
C++
137 lines
3.9 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_qq_chat(lpi_data_t *data) {
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/* QQ 2006 has a version number of 0x0f5f */
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if (match_str_both(data, "\x02\x0f\x5f\x00", "\x02\x0f\x5f\x00"))
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return true;
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if (match_str_either(data, "\x02\x0f\x5f\x00")) {
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if (data->payload_len[0] == 0)
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return true;
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if (data->payload_len[1] == 0)
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return true;
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}
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if (match_str_both(data, "\x02\x01\x00\x00", "\x02\x01\x00\x00")) {
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if (data->payload_len[0] == 75 && data->payload_len[1] == 43)
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return true;
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if (data->payload_len[1] == 75 && data->payload_len[0] == 43)
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return true;
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}
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if (match_str_both(data, "\x02\x02\x00\x00", "\x02\x02\x00\x00")) {
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if (data->payload_len[0] == 83 && data->payload_len[1] == 43)
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return true;
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if (data->payload_len[1] == 83 && data->payload_len[0] == 43)
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return true;
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}
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if (match_str_both(data, "\x02\x03\x00\x00", "\x02\x03\x00\x00")) {
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if (data->payload_len[0] == 83 && data->payload_len[1] == 43)
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return true;
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if (data->payload_len[1] == 83 && data->payload_len[0] == 43)
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return true;
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}
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if (data->payload[0] == data->payload[1]) {
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if (!MATCH(data->payload[0], 0x02, ANY, ANY, ANY))
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return false;
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if (data->server_port != 8000 && data->client_port != 8000)
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return false;
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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 inline bool match_qq_video(lpi_data_t *data) {
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/* Observed when using the QQ app to make video calls */
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if (match_str_both(data, "\x28\x00\x00\x00", "\x28\x00\x00\x00"))
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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_length(uint32_t payload, uint32_t len) {
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uint32_t plen = (ntohl(payload) >> 8) & 0xffff;
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if (plen != len)
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return false;
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if (MATCH(payload, 0x02, ANY, ANY, ANY))
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return true;
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if (MATCH(payload, 0x3e, ANY, ANY, 0x02))
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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(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (match_qq_chat(data))
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return true;
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if (match_qq_video(data))
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return true;
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if ((data->payload[0] & 0xff000000) == (data->payload[1] & 0xff000000)) {
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if (!match_qq_length(data->payload[0], data->payload_len[0]))
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return false;
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if (!match_qq_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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return false;
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}
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static lpi_module_t lpi_qq = {
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LPI_PROTO_UDP_QQ,
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LPI_CATEGORY_CHAT,
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"QQ",
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23,
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match_qq
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};
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void register_qq(LPIModuleMap *mod_map) {
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register_protocol(&lpi_qq, mod_map);
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}
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