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/*
* among_us.c
*
* Copyright (C) 2020 - 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_AMONG_US
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_int_among_us_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_AMONG_US, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_search_among_us(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct * const packet = &ndpi_struct->packet;
/* handshake packet */
if (packet->payload_packet_len > 9 &&
ntohl(*(u_int32_t*)&packet->payload[0]) == 0x08000100 &&
ntohl(*(u_int32_t*)&packet->payload[4]) == 0x80d90203)
{
ndpi_int_among_us_add_connection(ndpi_struct, flow);
} else {
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
}
void init_among_us_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection(
"AmongUs", ndpi_struct, *id,
NDPI_PROTOCOL_AMONG_US, ndpi_search_among_us, NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN, ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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