/src/ndpi/src/lib/protocols/nexon.c
Line | Count | Source |
1 | | /* |
2 | | * nexon.c |
3 | | * |
4 | | * Copyright (C) 2009-11 - ipoque GmbH |
5 | | * Copyright (C) 2011-26 - ntop.org |
6 | | * |
7 | | * This file is part of nDPI, an open source deep packet inspection |
8 | | * library based on the OpenDPI and PACE technology by ipoque GmbH |
9 | | * |
10 | | * nDPI is free software: you can redistribute it and/or modify |
11 | | * it under the terms of the GNU Lesser General Public License as published by |
12 | | * the Free Software Foundation, either version 3 of the License, or |
13 | | * (at your option) any later version. |
14 | | * |
15 | | * nDPI is distributed in the hope that it will be useful, |
16 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 | | * GNU Lesser General Public License for more details. |
19 | | * |
20 | | * You should have received a copy of the GNU Lesser General Public License |
21 | | * along with nDPI. If not, see <http://www.gnu.org/licenses/>. |
22 | | * |
23 | | */ |
24 | | |
25 | | #include "ndpi_protocol_ids.h" |
26 | | |
27 | | #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_NEXON |
28 | | |
29 | | #include "ndpi_api.h" |
30 | | #include "ndpi_private.h" |
31 | | |
32 | | static void ndpi_int_nexon_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) |
33 | 131 | { |
34 | 131 | ndpi_set_detected_protocol(ndpi_struct, &flow->core, NDPI_PROTOCOL_NEXON, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); |
35 | 131 | } |
36 | | |
37 | | |
38 | | static void ndpi_search_nexon(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) |
39 | 3.19M | { |
40 | 3.19M | struct ndpi_packet_struct *packet = &ndpi_struct->packet; |
41 | | |
42 | 3.19M | NDPI_LOG_DBG(ndpi_struct, "search nexon\n"); |
43 | | |
44 | 3.19M | if(packet->payload_packet_len == 24 && |
45 | 3.19M | ntohl(get_u_int32_t(packet->payload, 0)) == 0x18000000 && |
46 | 3.19M | ntohl(get_u_int32_t(packet->payload, 4)) == 0x64000000) { |
47 | 64 | NDPI_LOG_INFO(ndpi_struct, "found nexon\n"); |
48 | 64 | ndpi_int_nexon_add_connection(ndpi_struct, flow); |
49 | 64 | return; |
50 | 64 | } |
51 | 3.19M | if(packet->payload_packet_len == 20 && |
52 | 3.19M | ntohl(get_u_int32_t(packet->payload, 4)) == 0x163A992E) { |
53 | 67 | NDPI_LOG_INFO(ndpi_struct, "found nexon\n"); |
54 | 67 | ndpi_int_nexon_add_connection(ndpi_struct, flow); |
55 | 67 | return; |
56 | 67 | } |
57 | | |
58 | | /* TODO: detect UDP traffic */ |
59 | | |
60 | 3.19M | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
61 | | |
62 | 3.19M | } |
63 | | |
64 | | |
65 | | void init_nexon_dissector(struct ndpi_detection_module_struct *ndpi_struct) |
66 | 15.3k | { |
67 | 15.3k | ndpi_register_dissector("Nexon", ndpi_struct, |
68 | 15.3k | ndpi_search_nexon, |
69 | 15.3k | NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, |
70 | 15.3k | DISSECTOR_LICENSE_LGPL, |
71 | 15.3k | 1, NDPI_PROTOCOL_NEXON); |
72 | 15.3k | } |