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/*
* nest_log_sink.c
*
* Copyright (C) 2009-11 - ipoque GmbH
* Copyright (C) 2011-22 - ntop.org
* Copyright (C) 2018 - eGloo Incorporated
*
* This file is part of nDPI, an open source deep packet inspection
* library based on the OpenDPI and PACE technology by ipoque GmbH
*
* nDPI is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nDPI is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ndpi_protocol_ids.h"
#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_NEST_LOG_SINK
#include "ndpi_api.h"
#include "ndpi_private.h"
#define NEST_LOG_SINK_PORT 11095
#define NEST_LOG_SINK_MIN_LEN 8
#define NEST_LOG_SINK_MIN_MATCH 3
static void ndpi_search_nest_log_sink(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
NDPI_LOG_DBG(ndpi_struct, "search nest_log_sink\n");
if (packet->payload_packet_len < NEST_LOG_SINK_MIN_LEN) {
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
return;
}
if (ntohs(packet->tcp->source) != NEST_LOG_SINK_PORT &&
ntohs(packet->tcp->dest) != NEST_LOG_SINK_PORT) {
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
return;
}
if (packet->payload[1] <= 0x02 &&
(packet->payload[2] == 0x00 || packet->payload[2] == 0x10) &&
packet->payload[3] == 0x13)
flow->l4.tcp.nest_log_sink_matches++;
if (flow->l4.tcp.nest_log_sink_matches == NEST_LOG_SINK_MIN_MATCH) {
NDPI_LOG_INFO(ndpi_struct, "found nest_log_sink\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_NEST_LOG_SINK, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
}
void init_nest_log_sink_dissector(
struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("NEST_LOG_SINK",
ndpi_struct, *id,
NDPI_PROTOCOL_NEST_LOG_SINK,
ndpi_search_nest_log_sink,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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