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/*
* genshin_impact.c
*
* 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_GENSHIN_IMPACT
#include "ndpi_api.h"
static void ndpi_int_genshin_impact_add_connection(
struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_GENSHIN_IMPACT, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_search_genshin_impact(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 genshin-impact\n");
if (packet->udp != NULL)
{
if (flow->packet_counter == 1 && packet->payload_packet_len >= 20 &&
ntohl(*(u_int32_t*)&packet->payload[0]) == 0x000000FF &&
ntohl(*(u_int32_t*)&packet->payload[4]) == 0x00000000 &&
ntohl(*(u_int32_t*)&packet->payload[12]) == 0x499602D2 &&
ntohl(*(u_int32_t*)&packet->payload[16]) == 0xFFFFFFFF)
{
ndpi_int_genshin_impact_add_connection(ndpi_struct, flow);
return;
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
/* ***************************************************************** */
void init_genshin_impact_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id,
NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("Genshin Impact",
ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_GENSHIN_IMPACT,
ndpi_search_genshin_impact,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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