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/*
* fix.c
*
* Copyright (C) 2017-22 - ntop.org
*
* 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_FIX
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_search_fix(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 FIX\n");
if(packet->tcp && packet->payload_packet_len > 5) {
// 8=
if(packet->payload[0] == 0x38 && packet->payload[1] == 0x3d) {
// FIX
if(packet->payload[2] == 0x46 &&
packet->payload[3] == 0x49 &&
packet->payload[4] == 0x58) {
NDPI_LOG_INFO(ndpi_struct, "found FIX\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FIX, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
return;
}
// 0. 9=
if(packet->payload[2] == 0x4f &&
packet->payload[3] == 0x01 &&
packet->payload[4] == 0x39 &&
packet->payload[5] == 0x3d) {
NDPI_LOG_INFO(ndpi_struct, "found FIX\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FIX, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
return;
}
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_fix_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("FIX", ndpi_struct, *id,
NDPI_PROTOCOL_FIX,
ndpi_search_fix,
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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