diff options
Diffstat (limited to 'src/lib/protocols/hots.c')
| -rw-r--r-- | src/lib/protocols/hots.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/lib/protocols/hots.c b/src/lib/protocols/hots.c new file mode 100644 index 000000000..bc058b653 --- /dev/null +++ b/src/lib/protocols/hots.c @@ -0,0 +1,75 @@ +/* + * 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 <http://www.gnu.org/licenses/>. + * + */ + +#include "ndpi_protocol_ids.h" + +#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_HOTS + +#include "ndpi_api.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; + + NDPI_LOG_DBG(ndpi_struct, "search Heroes of the Storm\n"); + + int ports[4] = {1119, 1120, 3724, 6113}; + for (int 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; +}
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