98 lines
2.9 KiB
C++
98 lines
2.9 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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/* Bytes 3 and 4 are a length field */
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static inline bool match_fliggy_req(uint32_t payload, uint32_t len) {
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uint32_t hlen = ntohl(payload) & 0xffff;
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if (MATCH(payload, 0xd1, 0x00, ANY, ANY) ||
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MATCH(payload, 0xd5, 0x00, ANY, ANY)) {
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if (hlen == len - 4)
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return true;
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/* Try to account for messages that are longer than one MTU */
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if (len >= 1300 && hlen > len)
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return true;
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}
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if (MATCH(payload, 0xd5, 0x00, 0x01, 0x16) && len >= 282) {
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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_fliggy_resp(uint32_t payload, uint32_t len) {
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/* Usually, but not always 174 bytes -- I'm guessing sometimes
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* messages get merged?
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*/
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if (MATCH(payload, 0xd3, 0x00, 0x00, 0xaa) && len >= 174)
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return true;
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/* Same for this one, usually 58 but not always */
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if (MATCH(payload, 0xd3, 0x00, 0x00, 0x36) && len >= 58)
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return true;
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return false;
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}
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static inline bool match_fliggy(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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/* Ports 80 and 443, typically */
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if (match_fliggy_req(data->payload[0], data->payload_len[0])) {
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if (match_fliggy_resp(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_fliggy_req(data->payload[1], data->payload_len[1])) {
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if (match_fliggy_resp(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_fliggy = {
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LPI_PROTO_FLIGGY,
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LPI_CATEGORY_ECOMMERCE,
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"Fliggy",
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30,
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match_fliggy
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};
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void register_fliggy(LPIModuleMap *mod_map) {
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register_protocol(&lpi_fliggy, mod_map);
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}
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