1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* ookla.c
*
* Copyright (C) 2018-22 - ntop.org
*
* 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_OOKLA
#include "ndpi_api.h"
#include "ndpi_private.h"
/* #define DEBUG_OOKLA_LRU */
const u_int16_t ookla_port = 8080;
/* ************************************************************* */
static u_int64_t get_ookla_key(struct ndpi_flow_struct *flow)
{
if(flow->is_ipv6)
return ndpi_quick_hash64((const char *)flow->c_address.v6, 16);
else
return flow->c_address.v4;
}
/* ************************************************************* */
int ookla_search_into_cache(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
u_int64_t key;
u_int16_t dummy;
if(ndpi_struct->ookla_cache) {
key = get_ookla_key(flow);
if(ndpi_lru_find_cache(ndpi_struct->ookla_cache, key,
&dummy, 0 /* Don't remove it as it can be used for other connections */,
ndpi_get_current_time(flow))) {
#ifdef DEBUG_OOKLA_LRU
printf("[LRU OOKLA] Found %lu [%u <-> %u]\n", key, ntohs(flow->c_port), ntohs(flow->s_port));
#endif
return 1;
} else {
#ifdef DEBUG_OOKLA_LRU
printf("[LRU OOKLA] Not found %lu [%u <-> %u]\n", key, ntohs(flow->c_port), ntohs(flow->s_port));
#endif
}
}
return 0;
}
/* ************************************************************* */
void ookla_add_to_cache(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
u_int64_t key;
if(ndpi_struct->ookla_cache) {
key = get_ookla_key(flow);
#ifdef DEBUG_OOKLA_LRU
printf("[LRU OOKLA] ADDING %lu [%u <-> %u]\n", key, ntohs(flow->c_port), ntohs(flow->s_port));
#endif
ndpi_lru_add_to_cache(ndpi_struct->ookla_cache, key, 1 /* dummy */,
ndpi_get_current_time(flow));
}
}
/* ************************************************************* */
void ndpi_search_ookla(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, "Ookla detection\n");
if(ntohs(flow->s_port) != ookla_port && ntohs(flow->c_port) != ookla_port) {
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
return;
}
if(flow->packet_counter == 1 &&
packet->payload_packet_len >= NDPI_STATICSTRING_LEN("HI") &&
memcmp(packet->payload, "HI", NDPI_STATICSTRING_LEN("HI")) == 0) {
flow->ookla_stage = 1;
return;
}
if(flow->packet_counter == 2 &&
flow->ookla_stage == 1 &&
packet->payload_packet_len >= NDPI_STATICSTRING_LEN("HELLO") &&
memcmp(packet->payload, "HELLO", NDPI_STATICSTRING_LEN("HELLO")) == 0) {
NDPI_LOG_INFO(ndpi_struct, "found ookla (Hi + Hello)\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_OOKLA, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
ookla_add_to_cache(ndpi_struct, flow);
return;
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
/* ************************************************************* */
void init_ookla_dissector(struct ndpi_detection_module_struct *ndpi_struct,
u_int32_t *id) {
ndpi_set_bitmask_protocol_detection("Ookla", ndpi_struct, *id,
NDPI_PROTOCOL_OOKLA,
ndpi_search_ookla,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
|