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/*
* zmq.c
*
* Copyright (C) 2016-22 - ntop.org
*
* 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_ETHERNET_IP
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_int_ethernet_ip_add_connection(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow) {
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ETHERNET_IP,
NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_search_ethernet_ip(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 for ETHERNET_IP\n");
if(packet->tcp != NULL) {
NDPI_LOG_DBG2(ndpi_struct, "calculating ETHERNET_IP over tcp\n");
if(packet->payload_packet_len >= 24) {
u_int16_t eth_ip_port = ntohs(44818);
if((packet->tcp->source == eth_ip_port) || (packet->tcp->dest == eth_ip_port)) {
u_int16_t len = le16toh(*((u_int16_t *)&packet->payload[2])); /* Little endian */
if((len+24) == packet->payload_packet_len) {
NDPI_LOG_INFO(ndpi_struct, "found ethernet_ip\n");
ndpi_int_ethernet_ip_add_connection(ndpi_struct, flow);
return;
}
}
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow); /* No luck this time */
}
void init_ethernet_ip_dissector(struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id) {
ndpi_set_bitmask_protocol_detection("EthernetIP", ndpi_struct, *id,
NDPI_PROTOCOL_ETHERNET_IP,
ndpi_search_ethernet_ip,
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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