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/*
* tocaboca.c
*
* Copyright (C) 2011-22 - 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_TOCA_BOCA
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_int_toca_boca_add_connection(struct ndpi_detection_module_struct * const ndpi_struct,
struct ndpi_flow_struct * const flow)
{
NDPI_LOG_INFO(ndpi_struct, "found TocaBoca\n");
ndpi_set_detected_protocol(ndpi_struct, flow,
NDPI_PROTOCOL_TOCA_BOCA, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_search_toca_boca(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
u_int32_t payload_len = packet->payload_packet_len;
NDPI_LOG_DBG(ndpi_struct, "search TocaBoca\n");
if (packet->udp != NULL)
{
if (payload_len >= 13
&& get_u_int32_t(packet->payload, 0) == 0x7d7d7d7d
&& get_u_int32_t(packet->payload, 4) == 0x7d7d7d7d)
{
ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
return;
}
if (flow->packet_counter == 1
&& payload_len >= 24
&& ntohl(get_u_int32_t(packet->payload, 0)) == 0xffff0001
&& ntohl(get_u_int32_t(packet->payload, 12)) == 0x02ff0104)
{
ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
return;
}
if (payload_len >= 32
&& (ntohs(get_u_int16_t(packet->payload, 2)) == 0x0001
|| ntohs(get_u_int16_t(packet->payload, 2)) == 0x0002
|| ntohs(get_u_int16_t(packet->payload, 2)) == 0x0003)
&& (ntohl(get_u_int32_t(packet->payload, 12)) == 0x01ff0000
|| ntohl(get_u_int32_t(packet->payload, 12)) == 0x01000000)
&& ntohl(get_u_int32_t(packet->payload, 16)) == 0x00000014)
{
ndpi_int_toca_boca_add_connection(ndpi_struct, flow);
return;
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_toca_boca_dissector(struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("TocaBoca", ndpi_struct, *id,
NDPI_PROTOCOL_TOCA_BOCA,
ndpi_search_toca_boca,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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