140 lines
4.0 KiB
C++
140 lines
4.0 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_airdroid_req(uint32_t payload, uint32_t len) {
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if (MATCH(payload, 0x2a, 0x33, 0x0d, 0x0a)) {
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if (len == 97)
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return true;
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}
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if (MATCH(payload, 0x2a, 0x35, 0x0d, 0x0a)) {
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if (len == 118 || len == 119)
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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_airdroid_resp(uint32_t payload, uint32_t len) {
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if (len != 4)
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return false;
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if (MATCH(payload, 0x2b, 0x68, 0x0d, 0x0a))
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return true;
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return false;
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}
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static inline bool match_airdroid_get(uint32_t payload) {
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if (MATCH(payload, 'G', 'E', 'T', 0x20))
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return true;
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return false;
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}
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static inline bool is_hexdigit(uint32_t byte) {
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if (byte < 0x30)
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return false;
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if (byte > 0x39 && byte < 0x61)
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return false;
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if (byte > 0x66)
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return false;
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return true;
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}
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static inline bool match_airdroid_33(uint32_t payload, uint32_t len) {
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uint32_t ordered = ntohl(payload);
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uint32_t byte;
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/* Needs some proper testing against real airdroid traffic */
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if (len == 33) {
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byte = (ordered & 0xff);
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if (!is_hexdigit(byte))
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return false;
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byte = ((ordered >> 8) & 0xff);
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if (!is_hexdigit(byte))
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return false;
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byte = ((ordered >> 16) & 0xff);
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if (!is_hexdigit(byte))
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return false;
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byte = ((ordered >> 24) & 0xff);
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if (!is_hexdigit(byte))
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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_airdroid(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (match_airdroid_req(data->payload[0], data->payload_len[0])) {
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if (match_airdroid_resp(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_airdroid_req(data->payload[1], data->payload_len[1])) {
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if (match_airdroid_resp(data->payload[0], data->payload_len[0]))
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return true;
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}
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if (data->server_port == 9991 || data->client_port == 9991) {
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if (match_airdroid_33(data->payload[0], data->payload_len[0])) {
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if (match_airdroid_get(data->payload[1]))
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return true;
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}
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if (match_airdroid_33(data->payload[1], data->payload_len[1])) {
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if (match_airdroid_get(data->payload[0]))
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return true;
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}
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}
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return false;
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}
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static lpi_module_t lpi_airdroid = {
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LPI_PROTO_AIRDROID,
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LPI_CATEGORY_CLOUD,
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"AirDroid",
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12,
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match_airdroid
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};
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void register_airdroid(LPIModuleMap *mod_map) {
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register_protocol(&lpi_airdroid, mod_map);
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}
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