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/*
* megaco.c
*
* Copyright (C) 2014 by Gianluca Costa http://www.capanalysis.net
* Copyright (C) 2012-22 - ntop.org
*
* This module 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.
*
* This module 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.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "ndpi_protocol_ids.h"
#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_MEGACO
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_search_megaco(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 MEGACO\n");
if(packet->udp != NULL) {
if((packet->payload_packet_len > 4 && packet->payload[0] == '!' && packet->payload[1] == '/' &&
packet->payload[2] == '1' && packet->payload[3] == ' ' &&
(packet->payload[4] == '[' || packet->payload[4] == '<'))
|| (packet->payload_packet_len > 9 && packet->payload[0] == 'M' && packet->payload[1] == 'E' &&
packet->payload[2] == 'G' && packet->payload[3] == 'A' && packet->payload[4] == 'C' &&
packet->payload[5] == 'O' && packet->payload[6] == '/' &&
packet->payload[7] == '1' && packet->payload[8] == ' ' && packet->payload[9] == '[')) {
NDPI_LOG_INFO(ndpi_struct, "found MEGACO\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MEGACO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
return;
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_megaco_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("Megaco", ndpi_struct, *id,
NDPI_PROTOCOL_MEGACO,
ndpi_search_megaco,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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