148 lines
4.3 KiB
C++
148 lines
4.3 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_zoom_01(uint32_t payload, uint32_t len) {
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if (MATCH(payload, 0x01, 0x00, 0x02, ANY)) {
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if (len == 107 || len == 109 || len == 169)
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return true;
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}
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if (MATCH(payload, 0x01, 0x00, 0x03, ANY)) {
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if (len == 187 || len == 185 || len == 123 || len == 125) {
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return true;
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}
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}
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if (MATCH(payload, 0x01, 0x00, 0x6c, 0x00) && len == 111)
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return true;
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return false;
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}
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static inline bool match_zoom_02(uint32_t payload, uint32_t len) {
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if (MATCH(payload, 0x02, 0x00, 0x01, ANY) && len == 35)
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return true;
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if (MATCH(payload, 0x02, 0x00, 0x03, ANY) && len == 105)
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return true;
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if (MATCH(payload, 0x02, 0x00, 0x03, ANY) && len == 43)
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return true;
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if (MATCH(payload, 0x02, 0x00, 0x22, 0x00) && len == 37)
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return true;
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if (MATCH(payload, 0x02, 0x00, 0x24, 0x00) && len == 39)
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return true;
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return false;
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}
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static inline bool match_zoom_05(uint32_t payload) {
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if (MATCH(payload, 0x05, 0x10, 0x01, 0x00))
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return true;
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if (MATCH(payload, 0x05, 0x0f, 0x01, 0x00))
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return true;
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if (MATCH(payload, 0x05, 0x15, 0x01, 0x00))
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return true;
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return false;
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}
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static inline bool match_zoom_stream_hello(uint32_t payload, uint32_t len) {
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/* Seen 72, 85 and 86 so far */
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if (len >= 72 && len <= 90) {
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if (MATCH(payload, 0x1f, 0x01, 0x01, 0x00))
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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_zoom_manager(lpi_data_t *data) {
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if (data->server_port != 8801 && data->client_port != 8801) {
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return false;
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}
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/* Byte 4 must match in both directions */
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if ((data->payload[0] & 0xff000000) != (data->payload[1] & 0xff000000))
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return false;
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if (match_zoom_01(data->payload[0], data->payload_len[0])) {
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if (match_zoom_02(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_zoom_01(data->payload[1], data->payload_len[1])) {
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if (match_zoom_02(data->payload[0], data->payload_len[0]))
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return true;
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}
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if (match_zoom_05(data->payload[0]) && match_zoom_05(data->payload[1]))
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return true;
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return false;
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}
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static inline bool match_zoom_stream(lpi_data_t *data) {
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if (match_zoom_stream_hello(data->payload[0], data->payload_len[0])) {
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if (match_zoom_stream_hello(data->payload[1], data->payload_len[1]))
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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_zoom(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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if (match_zoom_manager(data))
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return true;
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if (match_zoom_stream(data))
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return true;
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return false;
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}
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static lpi_module_t lpi_zoom = {
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LPI_PROTO_UDP_ZOOM,
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LPI_CATEGORY_VOIP,
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"Zoom",
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5,
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match_zoom
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};
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void register_zoom(LPIModuleMap *mod_map) {
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register_protocol(&lpi_zoom, mod_map);
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}
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