/* * hots.c * * Copyright (C) 2023 - ntop.org * * This file is part of nDPI, an open source deep packet inspection * library based on the OpenDPI and PACE technology by ipoque GmbH * * 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 . * */ #include "ndpi_protocol_ids.h" #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_HOTS #include "ndpi_api.h" #include "ndpi_private.h" static void ndpi_hots_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_HOTS, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); NDPI_LOG_INFO(ndpi_struct, "found Heroes of the Storm packet\n"); } void ndpi_search_hots(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { struct ndpi_packet_struct *packet = &ndpi_struct->packet; int i, ports[4] = {1119, 1120, 3724, 6113}; NDPI_LOG_DBG(ndpi_struct, "search Heroes of the Storm\n"); for (i = 0; i < 4; i++) { if (packet->udp->dest == ntohs(ports[i]) || packet->udp->source == ntohs(ports[i])) { if (packet->payload_packet_len >= 20 && packet->payload_packet_len <= 122) { if (packet->payload[14] == 0x40 && packet->payload[15] == 0x00) { if ((packet->payload[2] == 0x03 && packet->payload[3] == 0x00) || (packet->payload[2] == 0x34 && packet->payload[3] == 0x00) || (packet->payload[0] == 0x00 && packet->payload[1] == 0x00 && packet->payload[2] == 0x00 && packet->payload[3] == 0x00 && packet->payload[4] == 0x00 && packet->payload[5] == 0x00 && packet->payload[6] == 0x00 && packet->payload[7] == 0x00 && packet->payload[8] == 0x00 && packet->payload[9] == 0x00 && packet->payload[10] == 0x00 && packet->payload[11] == 0x00 && packet->payload[12] == 0x00 && packet->payload[13] == 0x00)) { ndpi_hots_add_connection(ndpi_struct, flow); return; } } } break; } } NDPI_EXCLUDE_PROTO(ndpi_struct, flow); } void init_hots_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id) { ndpi_set_bitmask_protocol_detection("HOTS", ndpi_struct, *id, NDPI_PROTOCOL_HOTS, ndpi_search_hots, NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD, /* Only IPv4 UDP traffic is expected. */ SAVE_DETECTION_BITMASK_AS_UNKNOWN, ADD_TO_DETECTION_BITMASK); *id += 1; }