/src/ndpi/src/lib/protocols/nano.c
Line | Count | Source |
1 | | /* |
2 | | * nano.c |
3 | | * |
4 | | * Nano Network Protocol |
5 | | * |
6 | | * Copyright (C) 2024 - ntop.org |
7 | | * Copyright (C) 2024 - V.G <v.gavrilov@securitycode.ru> |
8 | | * |
9 | | * This file is part of nDPI, an open source deep packet inspection |
10 | | * library based on the OpenDPI and PACE technology by ipoque GmbH |
11 | | * |
12 | | * nDPI is free software: you can redistribute it and/or modify |
13 | | * it under the terms of the GNU Lesser General Public License as published by |
14 | | * the Free Software Foundation, either version 3 of the License, or |
15 | | * (at your option) any later version. |
16 | | * |
17 | | * nDPI is distributed in the hope that it will be useful, |
18 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
20 | | * GNU Lesser General Public License for more details. |
21 | | * |
22 | | * You should have received a copy of the GNU Lesser General Public License |
23 | | * along with nDPI. If not, see <http://www.gnu.org/licenses/>. |
24 | | * |
25 | | */ |
26 | | |
27 | | #include "ndpi_protocol_ids.h" |
28 | | |
29 | | #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_NANO |
30 | | |
31 | | #include "ndpi_api.h" |
32 | | #include "ndpi_private.h" |
33 | | |
34 | | /* |
35 | | * Look for the latest version at https://docs.nano.org/releases/node-releases |
36 | | */ |
37 | 0 | #define NANO_MIN_PROTOCOL_VER 18 |
38 | 0 | #define NANO_MAX_PROTOCOL_VER 20 |
39 | | |
40 | | static void ndpi_int_nano_add_connection(struct ndpi_detection_module_struct *ndpi_struct, |
41 | | struct ndpi_flow_struct *flow) |
42 | 0 | { |
43 | 0 | NDPI_LOG_INFO(ndpi_struct, "found Nano Network Protocol\n"); |
44 | |
|
45 | 0 | ndpi_set_detected_protocol(ndpi_struct, flow, |
46 | 0 | NDPI_PROTOCOL_NANO, NDPI_PROTOCOL_UNKNOWN, |
47 | 0 | NDPI_CONFIDENCE_DPI); |
48 | |
|
49 | 0 | if(ndpi_struct->mining_cache) |
50 | 0 | { |
51 | 0 | ndpi_lru_add_to_cache(ndpi_struct->mining_cache, mining_make_lru_cache_key(flow), |
52 | 0 | NDPI_PROTOCOL_NANO, ndpi_get_current_time(flow)); |
53 | 0 | } |
54 | 0 | } |
55 | | |
56 | | static void ndpi_search_nano(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) |
57 | 0 | { |
58 | 0 | struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; |
59 | |
|
60 | 0 | NDPI_LOG_DBG(ndpi_struct, "search Nano Network Protocol\n"); |
61 | |
|
62 | 0 | if (packet->payload_packet_len > 32 && |
63 | 0 | packet->payload[0] == 'R' && packet->payload[1] == 'C') |
64 | 0 | { |
65 | 0 | const u_int8_t max_ver = packet->payload[2]; |
66 | 0 | const u_int8_t use_ver = packet->payload[3]; |
67 | 0 | const u_int8_t min_ver = packet->payload[4]; |
68 | |
|
69 | 0 | if (max_ver == NANO_MAX_PROTOCOL_VER && |
70 | 0 | use_ver <= NANO_MAX_PROTOCOL_VER && use_ver >= NANO_MIN_PROTOCOL_VER && |
71 | 0 | min_ver >= NANO_MIN_PROTOCOL_VER && min_ver < NANO_MAX_PROTOCOL_VER && |
72 | 0 | packet->payload[5] <= 0x0F) |
73 | 0 | { |
74 | 0 | ndpi_int_nano_add_connection(ndpi_struct, flow); |
75 | 0 | return; |
76 | 0 | } |
77 | 0 | } |
78 | | |
79 | 0 | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
80 | 0 | } |
81 | | |
82 | | void init_nano_dissector(struct ndpi_detection_module_struct *ndpi_struct) |
83 | 1 | { |
84 | 1 | register_dissector("Nano", ndpi_struct, |
85 | 1 | ndpi_search_nano, |
86 | 1 | NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, |
87 | 1 | 1, NDPI_PROTOCOL_NANO); |
88 | 1 | } |