/src/ndpi/src/lib/protocols/tocaboca.c
Line | Count | Source |
1 | | /* |
2 | | * tocaboca.c |
3 | | * |
4 | | * Copyright (C) 2011-25 - ntop.org |
5 | | * |
6 | | * nDPI is free software: you can redistribute it and/or modify |
7 | | * it under the terms of the GNU Lesser General Public License as published by |
8 | | * the Free Software Foundation, either version 3 of the License, or |
9 | | * (at your option) any later version. |
10 | | * |
11 | | * nDPI is distributed in the hope that it will be useful, |
12 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | * GNU Lesser General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU Lesser General Public License |
17 | | * along with nDPI. If not, see <http://www.gnu.org/licenses/>. |
18 | | * |
19 | | */ |
20 | | |
21 | | #include "ndpi_protocol_ids.h" |
22 | | |
23 | | #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_TOCA_BOCA |
24 | | |
25 | | #include "ndpi_api.h" |
26 | | #include "ndpi_private.h" |
27 | | |
28 | | static void ndpi_int_toca_boca_add_connection(struct ndpi_detection_module_struct * const ndpi_struct, |
29 | | struct ndpi_flow_struct * const flow) |
30 | 0 | { |
31 | 0 | NDPI_LOG_INFO(ndpi_struct, "found TocaBoca\n"); |
32 | 0 | ndpi_set_detected_protocol(ndpi_struct, flow, |
33 | 0 | NDPI_PROTOCOL_TOCA_BOCA, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); |
34 | 0 | } |
35 | | |
36 | | static void ndpi_search_toca_boca(struct ndpi_detection_module_struct *ndpi_struct, |
37 | | struct ndpi_flow_struct *flow) |
38 | 23 | { |
39 | 23 | struct ndpi_packet_struct *packet = &ndpi_struct->packet; |
40 | 23 | u_int32_t payload_len = packet->payload_packet_len; |
41 | | |
42 | 23 | NDPI_LOG_DBG(ndpi_struct, "search TocaBoca\n"); |
43 | | |
44 | 23 | if (packet->udp != NULL) |
45 | 23 | { |
46 | 23 | if (payload_len >= 13 |
47 | 23 | && get_u_int32_t(packet->payload, 0) == 0x7d7d7d7d |
48 | 0 | && get_u_int32_t(packet->payload, 4) == 0x7d7d7d7d) |
49 | 0 | { |
50 | 0 | ndpi_int_toca_boca_add_connection(ndpi_struct, flow); |
51 | 0 | return; |
52 | 0 | } |
53 | | |
54 | 23 | if (flow->packet_counter == 1 |
55 | 23 | && payload_len >= 24 |
56 | 23 | && ntohl(get_u_int32_t(packet->payload, 0)) == 0xffff0001 |
57 | 23 | && ntohl(get_u_int32_t(packet->payload, 12)) == 0x02ff0104) |
58 | 0 | { |
59 | 0 | ndpi_int_toca_boca_add_connection(ndpi_struct, flow); |
60 | 0 | return; |
61 | 0 | } |
62 | | |
63 | 23 | if (payload_len >= 32 |
64 | 23 | && (ntohs(get_u_int16_t(packet->payload, 2)) == 0x0001 |
65 | 23 | || ntohs(get_u_int16_t(packet->payload, 2)) == 0x0002 |
66 | 23 | || ntohs(get_u_int16_t(packet->payload, 2)) == 0x0003) |
67 | 0 | && (ntohl(get_u_int32_t(packet->payload, 12)) == 0x01ff0000 |
68 | 0 | || ntohl(get_u_int32_t(packet->payload, 12)) == 0x01000000) |
69 | 23 | && ntohl(get_u_int32_t(packet->payload, 16)) == 0x00000014) |
70 | 0 | { |
71 | 0 | ndpi_int_toca_boca_add_connection(ndpi_struct, flow); |
72 | 0 | return; |
73 | 0 | } |
74 | 23 | } |
75 | | |
76 | 23 | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
77 | 23 | } |
78 | | |
79 | | void init_toca_boca_dissector(struct ndpi_detection_module_struct *ndpi_struct) |
80 | 862 | { |
81 | 862 | register_dissector("TocaBoca", ndpi_struct, |
82 | 862 | ndpi_search_toca_boca, |
83 | 862 | NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD, |
84 | 862 | 1, NDPI_PROTOCOL_TOCA_BOCA); |
85 | 862 | } |
86 | | |