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/*
* list.c
*
* Copyright (C) 2017-22 - 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_LISP
#include "ndpi_api.h"
#define LISP_PORT 4341
#define LISP_PORT1 4342
static void ndpi_int_lisp_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow,
u_int8_t due_to_correlation)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_LISP, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_check_lisp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
if(packet->udp != NULL) {
u_int16_t lisp_port = htons(LISP_PORT);
u_int16_t lisp_port1 = htons(LISP_PORT1);
if(((packet->udp->source == lisp_port)
&& (packet->udp->dest == lisp_port)) ||
((packet->udp->source == lisp_port1)
&& (packet->udp->dest == lisp_port1)) ) {
NDPI_LOG_INFO(ndpi_struct, "found lisp\n");
ndpi_int_lisp_add_connection(ndpi_struct, flow, 0);
return;
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void ndpi_search_lisp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
NDPI_LOG_DBG(ndpi_struct, "search lisp\n");
/* skip marked packets */
if (flow->detected_protocol_stack[0] != NDPI_PROTOCOL_LISP) {
ndpi_check_lisp(ndpi_struct, flow);
}
}
void init_lisp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("LISP", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_LISP,
ndpi_search_lisp,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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