/src/ndpi/src/lib/protocols/alicloud.c
Line | Count | Source |
1 | | /* |
2 | | * alicloud.c |
3 | | * |
4 | | * Copyright (C) 2022-23 - 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 | | |
22 | | #include "ndpi_protocol_ids.h" |
23 | | |
24 | | #define NDPI_CURRENT_PROTO NDPI_PROTOCOL_ALICLOUD |
25 | | |
26 | | #include "ndpi_api.h" |
27 | | #include "ndpi_private.h" |
28 | | |
29 | | static void ndpi_int_alicloud_add_connection(struct ndpi_detection_module_struct * const ndpi_struct, |
30 | | struct ndpi_flow_struct * const flow) |
31 | 0 | { |
32 | 0 | NDPI_LOG_INFO(ndpi_struct, "found alicloud\n"); |
33 | |
|
34 | 0 | ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ALICLOUD, NDPI_PROTOCOL_UNKNOWN, |
35 | 0 | NDPI_CONFIDENCE_DPI); |
36 | 0 | } |
37 | | |
38 | | static void ndpi_search_alicloud(struct ndpi_detection_module_struct *ndpi_struct, |
39 | | struct ndpi_flow_struct *flow) |
40 | 183 | { |
41 | 183 | struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; |
42 | | |
43 | 183 | NDPI_LOG_DBG(ndpi_struct, "search alicloud\n"); |
44 | | |
45 | 183 | if (packet->payload_packet_len < 8) |
46 | 2 | { |
47 | 2 | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
48 | 2 | return; |
49 | 2 | } |
50 | | |
51 | 181 | if (ntohl(get_u_int32_t(packet->payload, 0)) == 0xcefabeba) |
52 | 0 | { |
53 | 0 | u_int32_t pdu_len = ntohl(get_u_int32_t(packet->payload, 4)); |
54 | |
|
55 | 0 | if (packet->payload_packet_len == 8 && pdu_len > 0) |
56 | 0 | { |
57 | 0 | ndpi_int_alicloud_add_connection(ndpi_struct, flow); |
58 | 0 | return; |
59 | 0 | } else if (pdu_len == (u_int32_t)packet->payload_packet_len - 8) { |
60 | 0 | ndpi_int_alicloud_add_connection(ndpi_struct, flow); |
61 | 0 | return; |
62 | 0 | } |
63 | 0 | } |
64 | | |
65 | 181 | if (flow->packet_counter > 3) |
66 | 0 | { |
67 | 0 | NDPI_EXCLUDE_DISSECTOR(ndpi_struct, flow); |
68 | 0 | } |
69 | 181 | } |
70 | | |
71 | | void init_alicloud_dissector(struct ndpi_detection_module_struct *ndpi_struct) |
72 | 796 | { |
73 | 796 | register_dissector("AliCloud", ndpi_struct, |
74 | 796 | ndpi_search_alicloud, |
75 | 796 | NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION, |
76 | 796 | 1, NDPI_PROTOCOL_ALICLOUD); |
77 | 796 | } |