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
|
/*
* fasttrack.c
*
* Copyright (C) 2009-11 - ipoque GmbH
* Copyright (C) 2011-22 - ntop.org
*
* This file is part of nDPI, an open source deep packet inspection
* library based on the OpenDPI and PACE technology by ipoque GmbH
*
* 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_FASTTRACK
#include "ndpi_api.h"
static void ndpi_int_fasttrack_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FASTTRACK, NDPI_PROTOCOL_UNKNOWN);
}
void ndpi_search_fasttrack_tcp(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, "search FASTTRACK\n");
if ( (packet->payload != NULL)
&& (packet->payload_packet_len > 6)
&& (ntohs(get_u_int16_t(packet->payload, packet->payload_packet_len - 2)) == 0x0d0a)) {
NDPI_LOG_DBG2(ndpi_struct, "detected 0d0a at the end of the packet\n");
if (memcmp(packet->payload, "GIVE ", 5) == 0 && packet->payload_packet_len >= 8) {
u_int16_t i;
for (i = 5; i < (packet->payload_packet_len - 2); i++) {
// make shure that the argument to GIVE is numeric
if (!(packet->payload[i] >= '0' && packet->payload[i] <= '9')) {
goto exclude_fasttrack;
}
}
NDPI_LOG_INFO(ndpi_struct, "found FASTTRACK\n");
ndpi_int_fasttrack_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len > 50 && memcmp(packet->payload, "GET /", 5) == 0) {
u_int16_t a = 0;
NDPI_LOG_DBG2(ndpi_struct, "detected GET /. \n");
ndpi_parse_packet_line_info(ndpi_struct, flow);
for (a = 0; a < packet->parsed_lines; a++) {
if ((packet->line[a].len > 17 && memcmp(packet->line[a].ptr, "X-Kazaa-Username: ", 18) == 0)
|| (packet->line[a].len > 23 && memcmp(packet->line[a].ptr, "User-Agent: PeerEnabler/", 24) == 0)) {
NDPI_LOG_INFO(ndpi_struct,
"found FASTTRACK X-Kazaa-Username: || User-Agent: PeerEnabler/\n");
ndpi_int_fasttrack_add_connection(ndpi_struct, flow);
return;
}
}
}
}
exclude_fasttrack:
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_fasttrack_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("FastTrack", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_FASTTRACK,
ndpi_search_fasttrack_tcp,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
|